pub struct Output { /* private fields */ }
Implementations§
Source§impl Output
impl Output
pub unsafe fn wrap(ptr: *mut AVFormatContext) -> Self
pub unsafe fn as_ptr(&self) -> *const AVFormatContext
pub unsafe fn as_mut_ptr(&mut self) -> *mut AVFormatContext
Source§impl Output
impl Output
Sourcepub fn format(&self) -> Output
pub fn format(&self) -> Output
Examples found in repository?
examples/transcode-x264.rs (line 50)
43 fn new(
44 ist: &format::stream::Stream,
45 octx: &mut format::context::Output,
46 ost_index: usize,
47 x264_opts: Dictionary,
48 enable_logging: bool,
49 ) -> Result<Self, ffmpeg::Error> {
50 let global_header = octx.format().flags().contains(format::Flags::GLOBAL_HEADER);
51 let decoder = ffmpeg::codec::context::Context::from_parameters(ist.parameters())?
52 .decoder()
53 .video()?;
54
55 let codec = encoder::find(codec::Id::H264);
56 let mut ost = octx.add_stream(codec)?;
57
58 let mut encoder =
59 codec::context::Context::new_with_codec(codec.ok_or(ffmpeg::Error::InvalidData)?)
60 .encoder()
61 .video()?;
62 ost.set_parameters(&encoder);
63 encoder.set_height(decoder.height());
64 encoder.set_width(decoder.width());
65 encoder.set_aspect_ratio(decoder.aspect_ratio());
66 encoder.set_format(decoder.format());
67 encoder.set_frame_rate(decoder.frame_rate());
68 encoder.set_time_base(ist.time_base());
69
70 if global_header {
71 encoder.set_flags(codec::Flags::GLOBAL_HEADER);
72 }
73
74 let opened_encoder = encoder
75 .open_with(x264_opts)
76 .expect("error opening x264 with supplied settings");
77 ost.set_parameters(&opened_encoder);
78 Ok(Self {
79 ost_index,
80 decoder,
81 input_time_base: ist.time_base(),
82 encoder: opened_encoder,
83 logging_enabled: enable_logging,
84 frame_count: 0,
85 last_log_frame_count: 0,
86 starting_time: Instant::now(),
87 last_log_time: Instant::now(),
88 })
89 }
More examples
examples/transcode-audio.rs (line 77)
65fn transcoder<P: AsRef<Path> + ?Sized>(
66 ictx: &mut format::context::Input,
67 octx: &mut format::context::Output,
68 path: &P,
69 filter_spec: &str,
70) -> Result<Transcoder, ffmpeg::Error> {
71 let input = ictx
72 .streams()
73 .best(media::Type::Audio)
74 .expect("could not find best audio stream");
75 let context = ffmpeg::codec::context::Context::from_parameters(input.parameters())?;
76 let mut decoder = context.decoder().audio()?;
77 let codec = ffmpeg::encoder::find(octx.format().codec(path, media::Type::Audio))
78 .expect("failed to find encoder")
79 .audio()?;
80 let global = octx
81 .format()
82 .flags()
83 .contains(ffmpeg::format::flag::Flags::GLOBAL_HEADER);
84
85 decoder.set_parameters(input.parameters())?;
86
87 let mut output = octx.add_stream(codec)?;
88 let context = ffmpeg::codec::context::Context::from_parameters(output.parameters())?;
89 let mut encoder = context.encoder().audio()?;
90
91 let channel_layout = codec
92 .channel_layouts()
93 .map(|cls| cls.best(decoder.channel_layout().channels()))
94 .unwrap_or(ffmpeg::channel_layout::ChannelLayout::STEREO);
95
96 if global {
97 encoder.set_flags(ffmpeg::codec::flag::Flags::GLOBAL_HEADER);
98 }
99
100 encoder.set_rate(decoder.rate() as i32);
101 encoder.set_channel_layout(channel_layout);
102 #[cfg(not(feature = "ffmpeg_7_0"))]
103 {
104 encoder.set_channels(channel_layout.channels());
105 }
106 encoder.set_format(
107 codec
108 .formats()
109 .expect("unknown supported formats")
110 .next()
111 .unwrap(),
112 );
113 encoder.set_bit_rate(decoder.bit_rate());
114 encoder.set_max_bit_rate(decoder.max_bit_rate());
115
116 encoder.set_time_base((1, decoder.rate() as i32));
117 output.set_time_base((1, decoder.rate() as i32));
118
119 let encoder = encoder.open_as(codec)?;
120 output.set_parameters(&encoder);
121
122 let filter = filter(filter_spec, &decoder, &encoder)?;
123
124 let in_time_base = decoder.time_base();
125 let out_time_base = output.time_base();
126
127 Ok(Transcoder {
128 stream: input.index(),
129 filter,
130 decoder,
131 encoder,
132 in_time_base,
133 out_time_base,
134 })
135}
Sourcepub fn write_header(&mut self) -> Result<(), Error>
pub fn write_header(&mut self) -> Result<(), Error>
Examples found in repository?
examples/transcode-audio.rs (line 229)
208fn main() {
209 ffmpeg::init().unwrap();
210
211 let input = env::args().nth(1).expect("missing input");
212 let output = env::args().nth(2).expect("missing output");
213 let filter = env::args().nth(3).unwrap_or_else(|| "anull".to_owned());
214 let seek = env::args().nth(4).and_then(|s| s.parse::<i64>().ok());
215
216 let mut ictx = format::input(&input).unwrap();
217 let mut octx = format::output(&output).unwrap();
218 let mut transcoder = transcoder(&mut ictx, &mut octx, &output, &filter).unwrap();
219
220 if let Some(position) = seek {
221 // If the position was given in seconds, rescale it to ffmpegs base timebase.
222 let position = position.rescale((1, 1), rescale::TIME_BASE);
223 // If this seek was embedded in the transcoding loop, a call of `flush()`
224 // for every opened buffer after the successful seek would be advisable.
225 ictx.seek(position, ..position).unwrap();
226 }
227
228 octx.set_metadata(ictx.metadata().to_owned());
229 octx.write_header().unwrap();
230
231 for (stream, mut packet) in ictx.packets() {
232 if stream.index() == transcoder.stream {
233 packet.rescale_ts(stream.time_base(), transcoder.in_time_base);
234 transcoder.send_packet_to_decoder(&packet);
235 transcoder.receive_and_process_decoded_frames(&mut octx);
236 }
237 }
238
239 transcoder.send_eof_to_decoder();
240 transcoder.receive_and_process_decoded_frames(&mut octx);
241
242 transcoder.flush_filter();
243 transcoder.get_and_process_filtered_frames(&mut octx);
244
245 transcoder.send_eof_to_encoder();
246 transcoder.receive_and_process_encoded_packets(&mut octx);
247
248 octx.write_trailer().unwrap();
249}
More examples
examples/remux.rs (line 43)
7fn main() {
8 let input_file = env::args().nth(1).expect("missing input file");
9 let output_file = env::args().nth(2).expect("missing output file");
10
11 ffmpeg::init().unwrap();
12 log::set_level(log::Level::Warning);
13
14 let mut ictx = format::input(&input_file).unwrap();
15 let mut octx = format::output(&output_file).unwrap();
16
17 let mut stream_mapping = vec![0; ictx.nb_streams() as _];
18 let mut ist_time_bases = vec![Rational(0, 1); ictx.nb_streams() as _];
19 let mut ost_index = 0;
20 for (ist_index, ist) in ictx.streams().enumerate() {
21 let ist_medium = ist.parameters().medium();
22 if ist_medium != media::Type::Audio
23 && ist_medium != media::Type::Video
24 && ist_medium != media::Type::Subtitle
25 {
26 stream_mapping[ist_index] = -1;
27 continue;
28 }
29 stream_mapping[ist_index] = ost_index;
30 ist_time_bases[ist_index] = ist.time_base();
31 ost_index += 1;
32 let mut ost = octx.add_stream(encoder::find(codec::Id::None)).unwrap();
33 ost.set_parameters(ist.parameters());
34 // We need to set codec_tag to 0 lest we run into incompatible codec tag
35 // issues when muxing into a different container format. Unfortunately
36 // there's no high level API to do this (yet).
37 unsafe {
38 (*ost.parameters().as_mut_ptr()).codec_tag = 0;
39 }
40 }
41
42 octx.set_metadata(ictx.metadata().to_owned());
43 octx.write_header().unwrap();
44
45 for (stream, mut packet) in ictx.packets() {
46 let ist_index = stream.index();
47 let ost_index = stream_mapping[ist_index];
48 if ost_index < 0 {
49 continue;
50 }
51 let ost = octx.stream(ost_index as _).unwrap();
52 packet.rescale_ts(ist_time_bases[ist_index], ost.time_base());
53 packet.set_position(-1);
54 packet.set_stream(ost_index as _);
55 packet.write_interleaved(&mut octx).unwrap();
56 }
57
58 octx.write_trailer().unwrap();
59}
examples/transcode-x264.rs (line 238)
169fn main() {
170 let input_file = env::args().nth(1).expect("missing input file");
171 let output_file = env::args().nth(2).expect("missing output file");
172 let x264_opts = parse_opts(
173 env::args()
174 .nth(3)
175 .unwrap_or_else(|| DEFAULT_X264_OPTS.to_string()),
176 )
177 .expect("invalid x264 options string");
178
179 eprintln!("x264 options: {:?}", x264_opts);
180
181 ffmpeg::init().unwrap();
182 log::set_level(log::Level::Info);
183
184 let mut ictx = format::input(&input_file).unwrap();
185 let mut octx = format::output(&output_file).unwrap();
186
187 format::context::input::dump(&ictx, 0, Some(&input_file));
188
189 let best_video_stream_index = ictx
190 .streams()
191 .best(media::Type::Video)
192 .map(|stream| stream.index());
193 let mut stream_mapping: Vec<isize> = vec![0; ictx.nb_streams() as _];
194 let mut ist_time_bases = vec![Rational(0, 0); ictx.nb_streams() as _];
195 let mut ost_time_bases = vec![Rational(0, 0); ictx.nb_streams() as _];
196 let mut transcoders = HashMap::new();
197 let mut ost_index = 0;
198 for (ist_index, ist) in ictx.streams().enumerate() {
199 let ist_medium = ist.parameters().medium();
200 if ist_medium != media::Type::Audio
201 && ist_medium != media::Type::Video
202 && ist_medium != media::Type::Subtitle
203 {
204 stream_mapping[ist_index] = -1;
205 continue;
206 }
207 stream_mapping[ist_index] = ost_index;
208 ist_time_bases[ist_index] = ist.time_base();
209 if ist_medium == media::Type::Video {
210 // Initialize transcoder for video stream.
211 transcoders.insert(
212 ist_index,
213 Transcoder::new(
214 &ist,
215 &mut octx,
216 ost_index as _,
217 x264_opts.to_owned(),
218 Some(ist_index) == best_video_stream_index,
219 )
220 .unwrap(),
221 );
222 } else {
223 // Set up for stream copy for non-video stream.
224 let mut ost = octx.add_stream(encoder::find(codec::Id::None)).unwrap();
225 ost.set_parameters(ist.parameters());
226 // We need to set codec_tag to 0 lest we run into incompatible codec tag
227 // issues when muxing into a different container format. Unfortunately
228 // there's no high level API to do this (yet).
229 unsafe {
230 (*ost.parameters().as_mut_ptr()).codec_tag = 0;
231 }
232 }
233 ost_index += 1;
234 }
235
236 octx.set_metadata(ictx.metadata().to_owned());
237 format::context::output::dump(&octx, 0, Some(&output_file));
238 octx.write_header().unwrap();
239
240 for (ost_index, _) in octx.streams().enumerate() {
241 ost_time_bases[ost_index] = octx.stream(ost_index as _).unwrap().time_base();
242 }
243
244 for (stream, mut packet) in ictx.packets() {
245 let ist_index = stream.index();
246 let ost_index = stream_mapping[ist_index];
247 if ost_index < 0 {
248 continue;
249 }
250 let ost_time_base = ost_time_bases[ost_index as usize];
251 match transcoders.get_mut(&ist_index) {
252 Some(transcoder) => {
253 transcoder.send_packet_to_decoder(&packet);
254 transcoder.receive_and_process_decoded_frames(&mut octx, ost_time_base);
255 }
256 None => {
257 // Do stream copy on non-video streams.
258 packet.rescale_ts(ist_time_bases[ist_index], ost_time_base);
259 packet.set_position(-1);
260 packet.set_stream(ost_index as _);
261 packet.write_interleaved(&mut octx).unwrap();
262 }
263 }
264 }
265
266 // Flush encoders and decoders.
267 for (ost_index, transcoder) in transcoders.iter_mut() {
268 let ost_time_base = ost_time_bases[*ost_index];
269 transcoder.send_eof_to_decoder();
270 transcoder.receive_and_process_decoded_frames(&mut octx, ost_time_base);
271 transcoder.send_eof_to_encoder();
272 transcoder.receive_and_process_encoded_packets(&mut octx, ost_time_base);
273 }
274
275 octx.write_trailer().unwrap();
276}
pub fn write_header_with( &mut self, options: Dictionary<'_>, ) -> Result<Dictionary<'_>, Error>
Sourcepub fn write_trailer(&mut self) -> Result<(), Error>
pub fn write_trailer(&mut self) -> Result<(), Error>
Examples found in repository?
examples/transcode-audio.rs (line 248)
208fn main() {
209 ffmpeg::init().unwrap();
210
211 let input = env::args().nth(1).expect("missing input");
212 let output = env::args().nth(2).expect("missing output");
213 let filter = env::args().nth(3).unwrap_or_else(|| "anull".to_owned());
214 let seek = env::args().nth(4).and_then(|s| s.parse::<i64>().ok());
215
216 let mut ictx = format::input(&input).unwrap();
217 let mut octx = format::output(&output).unwrap();
218 let mut transcoder = transcoder(&mut ictx, &mut octx, &output, &filter).unwrap();
219
220 if let Some(position) = seek {
221 // If the position was given in seconds, rescale it to ffmpegs base timebase.
222 let position = position.rescale((1, 1), rescale::TIME_BASE);
223 // If this seek was embedded in the transcoding loop, a call of `flush()`
224 // for every opened buffer after the successful seek would be advisable.
225 ictx.seek(position, ..position).unwrap();
226 }
227
228 octx.set_metadata(ictx.metadata().to_owned());
229 octx.write_header().unwrap();
230
231 for (stream, mut packet) in ictx.packets() {
232 if stream.index() == transcoder.stream {
233 packet.rescale_ts(stream.time_base(), transcoder.in_time_base);
234 transcoder.send_packet_to_decoder(&packet);
235 transcoder.receive_and_process_decoded_frames(&mut octx);
236 }
237 }
238
239 transcoder.send_eof_to_decoder();
240 transcoder.receive_and_process_decoded_frames(&mut octx);
241
242 transcoder.flush_filter();
243 transcoder.get_and_process_filtered_frames(&mut octx);
244
245 transcoder.send_eof_to_encoder();
246 transcoder.receive_and_process_encoded_packets(&mut octx);
247
248 octx.write_trailer().unwrap();
249}
More examples
examples/remux.rs (line 58)
7fn main() {
8 let input_file = env::args().nth(1).expect("missing input file");
9 let output_file = env::args().nth(2).expect("missing output file");
10
11 ffmpeg::init().unwrap();
12 log::set_level(log::Level::Warning);
13
14 let mut ictx = format::input(&input_file).unwrap();
15 let mut octx = format::output(&output_file).unwrap();
16
17 let mut stream_mapping = vec![0; ictx.nb_streams() as _];
18 let mut ist_time_bases = vec![Rational(0, 1); ictx.nb_streams() as _];
19 let mut ost_index = 0;
20 for (ist_index, ist) in ictx.streams().enumerate() {
21 let ist_medium = ist.parameters().medium();
22 if ist_medium != media::Type::Audio
23 && ist_medium != media::Type::Video
24 && ist_medium != media::Type::Subtitle
25 {
26 stream_mapping[ist_index] = -1;
27 continue;
28 }
29 stream_mapping[ist_index] = ost_index;
30 ist_time_bases[ist_index] = ist.time_base();
31 ost_index += 1;
32 let mut ost = octx.add_stream(encoder::find(codec::Id::None)).unwrap();
33 ost.set_parameters(ist.parameters());
34 // We need to set codec_tag to 0 lest we run into incompatible codec tag
35 // issues when muxing into a different container format. Unfortunately
36 // there's no high level API to do this (yet).
37 unsafe {
38 (*ost.parameters().as_mut_ptr()).codec_tag = 0;
39 }
40 }
41
42 octx.set_metadata(ictx.metadata().to_owned());
43 octx.write_header().unwrap();
44
45 for (stream, mut packet) in ictx.packets() {
46 let ist_index = stream.index();
47 let ost_index = stream_mapping[ist_index];
48 if ost_index < 0 {
49 continue;
50 }
51 let ost = octx.stream(ost_index as _).unwrap();
52 packet.rescale_ts(ist_time_bases[ist_index], ost.time_base());
53 packet.set_position(-1);
54 packet.set_stream(ost_index as _);
55 packet.write_interleaved(&mut octx).unwrap();
56 }
57
58 octx.write_trailer().unwrap();
59}
examples/transcode-x264.rs (line 275)
169fn main() {
170 let input_file = env::args().nth(1).expect("missing input file");
171 let output_file = env::args().nth(2).expect("missing output file");
172 let x264_opts = parse_opts(
173 env::args()
174 .nth(3)
175 .unwrap_or_else(|| DEFAULT_X264_OPTS.to_string()),
176 )
177 .expect("invalid x264 options string");
178
179 eprintln!("x264 options: {:?}", x264_opts);
180
181 ffmpeg::init().unwrap();
182 log::set_level(log::Level::Info);
183
184 let mut ictx = format::input(&input_file).unwrap();
185 let mut octx = format::output(&output_file).unwrap();
186
187 format::context::input::dump(&ictx, 0, Some(&input_file));
188
189 let best_video_stream_index = ictx
190 .streams()
191 .best(media::Type::Video)
192 .map(|stream| stream.index());
193 let mut stream_mapping: Vec<isize> = vec![0; ictx.nb_streams() as _];
194 let mut ist_time_bases = vec![Rational(0, 0); ictx.nb_streams() as _];
195 let mut ost_time_bases = vec![Rational(0, 0); ictx.nb_streams() as _];
196 let mut transcoders = HashMap::new();
197 let mut ost_index = 0;
198 for (ist_index, ist) in ictx.streams().enumerate() {
199 let ist_medium = ist.parameters().medium();
200 if ist_medium != media::Type::Audio
201 && ist_medium != media::Type::Video
202 && ist_medium != media::Type::Subtitle
203 {
204 stream_mapping[ist_index] = -1;
205 continue;
206 }
207 stream_mapping[ist_index] = ost_index;
208 ist_time_bases[ist_index] = ist.time_base();
209 if ist_medium == media::Type::Video {
210 // Initialize transcoder for video stream.
211 transcoders.insert(
212 ist_index,
213 Transcoder::new(
214 &ist,
215 &mut octx,
216 ost_index as _,
217 x264_opts.to_owned(),
218 Some(ist_index) == best_video_stream_index,
219 )
220 .unwrap(),
221 );
222 } else {
223 // Set up for stream copy for non-video stream.
224 let mut ost = octx.add_stream(encoder::find(codec::Id::None)).unwrap();
225 ost.set_parameters(ist.parameters());
226 // We need to set codec_tag to 0 lest we run into incompatible codec tag
227 // issues when muxing into a different container format. Unfortunately
228 // there's no high level API to do this (yet).
229 unsafe {
230 (*ost.parameters().as_mut_ptr()).codec_tag = 0;
231 }
232 }
233 ost_index += 1;
234 }
235
236 octx.set_metadata(ictx.metadata().to_owned());
237 format::context::output::dump(&octx, 0, Some(&output_file));
238 octx.write_header().unwrap();
239
240 for (ost_index, _) in octx.streams().enumerate() {
241 ost_time_bases[ost_index] = octx.stream(ost_index as _).unwrap().time_base();
242 }
243
244 for (stream, mut packet) in ictx.packets() {
245 let ist_index = stream.index();
246 let ost_index = stream_mapping[ist_index];
247 if ost_index < 0 {
248 continue;
249 }
250 let ost_time_base = ost_time_bases[ost_index as usize];
251 match transcoders.get_mut(&ist_index) {
252 Some(transcoder) => {
253 transcoder.send_packet_to_decoder(&packet);
254 transcoder.receive_and_process_decoded_frames(&mut octx, ost_time_base);
255 }
256 None => {
257 // Do stream copy on non-video streams.
258 packet.rescale_ts(ist_time_bases[ist_index], ost_time_base);
259 packet.set_position(-1);
260 packet.set_stream(ost_index as _);
261 packet.write_interleaved(&mut octx).unwrap();
262 }
263 }
264 }
265
266 // Flush encoders and decoders.
267 for (ost_index, transcoder) in transcoders.iter_mut() {
268 let ost_time_base = ost_time_bases[*ost_index];
269 transcoder.send_eof_to_decoder();
270 transcoder.receive_and_process_decoded_frames(&mut octx, ost_time_base);
271 transcoder.send_eof_to_encoder();
272 transcoder.receive_and_process_encoded_packets(&mut octx, ost_time_base);
273 }
274
275 octx.write_trailer().unwrap();
276}
Sourcepub fn add_stream<E: Encoder>(
&mut self,
codec: E,
) -> Result<StreamMut<'_>, Error>
pub fn add_stream<E: Encoder>( &mut self, codec: E, ) -> Result<StreamMut<'_>, Error>
Examples found in repository?
examples/transcode-x264.rs (line 56)
43 fn new(
44 ist: &format::stream::Stream,
45 octx: &mut format::context::Output,
46 ost_index: usize,
47 x264_opts: Dictionary,
48 enable_logging: bool,
49 ) -> Result<Self, ffmpeg::Error> {
50 let global_header = octx.format().flags().contains(format::Flags::GLOBAL_HEADER);
51 let decoder = ffmpeg::codec::context::Context::from_parameters(ist.parameters())?
52 .decoder()
53 .video()?;
54
55 let codec = encoder::find(codec::Id::H264);
56 let mut ost = octx.add_stream(codec)?;
57
58 let mut encoder =
59 codec::context::Context::new_with_codec(codec.ok_or(ffmpeg::Error::InvalidData)?)
60 .encoder()
61 .video()?;
62 ost.set_parameters(&encoder);
63 encoder.set_height(decoder.height());
64 encoder.set_width(decoder.width());
65 encoder.set_aspect_ratio(decoder.aspect_ratio());
66 encoder.set_format(decoder.format());
67 encoder.set_frame_rate(decoder.frame_rate());
68 encoder.set_time_base(ist.time_base());
69
70 if global_header {
71 encoder.set_flags(codec::Flags::GLOBAL_HEADER);
72 }
73
74 let opened_encoder = encoder
75 .open_with(x264_opts)
76 .expect("error opening x264 with supplied settings");
77 ost.set_parameters(&opened_encoder);
78 Ok(Self {
79 ost_index,
80 decoder,
81 input_time_base: ist.time_base(),
82 encoder: opened_encoder,
83 logging_enabled: enable_logging,
84 frame_count: 0,
85 last_log_frame_count: 0,
86 starting_time: Instant::now(),
87 last_log_time: Instant::now(),
88 })
89 }
90
91 fn send_packet_to_decoder(&mut self, packet: &Packet) {
92 self.decoder.send_packet(packet).unwrap();
93 }
94
95 fn send_eof_to_decoder(&mut self) {
96 self.decoder.send_eof().unwrap();
97 }
98
99 fn receive_and_process_decoded_frames(
100 &mut self,
101 octx: &mut format::context::Output,
102 ost_time_base: Rational,
103 ) {
104 let mut frame = frame::Video::empty();
105 while self.decoder.receive_frame(&mut frame).is_ok() {
106 self.frame_count += 1;
107 let timestamp = frame.timestamp();
108 self.log_progress(f64::from(
109 Rational(timestamp.unwrap_or(0) as i32, 1) * self.input_time_base,
110 ));
111 frame.set_pts(timestamp);
112 frame.set_kind(picture::Type::None);
113 self.send_frame_to_encoder(&frame);
114 self.receive_and_process_encoded_packets(octx, ost_time_base);
115 }
116 }
117
118 fn send_frame_to_encoder(&mut self, frame: &frame::Video) {
119 self.encoder.send_frame(frame).unwrap();
120 }
121
122 fn send_eof_to_encoder(&mut self) {
123 self.encoder.send_eof().unwrap();
124 }
125
126 fn receive_and_process_encoded_packets(
127 &mut self,
128 octx: &mut format::context::Output,
129 ost_time_base: Rational,
130 ) {
131 let mut encoded = Packet::empty();
132 while self.encoder.receive_packet(&mut encoded).is_ok() {
133 encoded.set_stream(self.ost_index);
134 encoded.rescale_ts(self.input_time_base, ost_time_base);
135 encoded.write_interleaved(octx).unwrap();
136 }
137 }
138
139 fn log_progress(&mut self, timestamp: f64) {
140 if !self.logging_enabled
141 || (self.frame_count - self.last_log_frame_count < 100
142 && self.last_log_time.elapsed().as_secs_f64() < 1.0)
143 {
144 return;
145 }
146 eprintln!(
147 "time elpased: \t{:8.2}\tframe count: {:8}\ttimestamp: {:8.2}",
148 self.starting_time.elapsed().as_secs_f64(),
149 self.frame_count,
150 timestamp
151 );
152 self.last_log_frame_count = self.frame_count;
153 self.last_log_time = Instant::now();
154 }
155}
156
157fn parse_opts<'a>(s: String) -> Option<Dictionary<'a>> {
158 let mut dict = Dictionary::new();
159 for keyval in s.split_terminator(',') {
160 let tokens: Vec<&str> = keyval.split('=').collect();
161 match tokens[..] {
162 [key, val] => dict.set(key, val),
163 _ => return None,
164 }
165 }
166 Some(dict)
167}
168
169fn main() {
170 let input_file = env::args().nth(1).expect("missing input file");
171 let output_file = env::args().nth(2).expect("missing output file");
172 let x264_opts = parse_opts(
173 env::args()
174 .nth(3)
175 .unwrap_or_else(|| DEFAULT_X264_OPTS.to_string()),
176 )
177 .expect("invalid x264 options string");
178
179 eprintln!("x264 options: {:?}", x264_opts);
180
181 ffmpeg::init().unwrap();
182 log::set_level(log::Level::Info);
183
184 let mut ictx = format::input(&input_file).unwrap();
185 let mut octx = format::output(&output_file).unwrap();
186
187 format::context::input::dump(&ictx, 0, Some(&input_file));
188
189 let best_video_stream_index = ictx
190 .streams()
191 .best(media::Type::Video)
192 .map(|stream| stream.index());
193 let mut stream_mapping: Vec<isize> = vec![0; ictx.nb_streams() as _];
194 let mut ist_time_bases = vec![Rational(0, 0); ictx.nb_streams() as _];
195 let mut ost_time_bases = vec![Rational(0, 0); ictx.nb_streams() as _];
196 let mut transcoders = HashMap::new();
197 let mut ost_index = 0;
198 for (ist_index, ist) in ictx.streams().enumerate() {
199 let ist_medium = ist.parameters().medium();
200 if ist_medium != media::Type::Audio
201 && ist_medium != media::Type::Video
202 && ist_medium != media::Type::Subtitle
203 {
204 stream_mapping[ist_index] = -1;
205 continue;
206 }
207 stream_mapping[ist_index] = ost_index;
208 ist_time_bases[ist_index] = ist.time_base();
209 if ist_medium == media::Type::Video {
210 // Initialize transcoder for video stream.
211 transcoders.insert(
212 ist_index,
213 Transcoder::new(
214 &ist,
215 &mut octx,
216 ost_index as _,
217 x264_opts.to_owned(),
218 Some(ist_index) == best_video_stream_index,
219 )
220 .unwrap(),
221 );
222 } else {
223 // Set up for stream copy for non-video stream.
224 let mut ost = octx.add_stream(encoder::find(codec::Id::None)).unwrap();
225 ost.set_parameters(ist.parameters());
226 // We need to set codec_tag to 0 lest we run into incompatible codec tag
227 // issues when muxing into a different container format. Unfortunately
228 // there's no high level API to do this (yet).
229 unsafe {
230 (*ost.parameters().as_mut_ptr()).codec_tag = 0;
231 }
232 }
233 ost_index += 1;
234 }
235
236 octx.set_metadata(ictx.metadata().to_owned());
237 format::context::output::dump(&octx, 0, Some(&output_file));
238 octx.write_header().unwrap();
239
240 for (ost_index, _) in octx.streams().enumerate() {
241 ost_time_bases[ost_index] = octx.stream(ost_index as _).unwrap().time_base();
242 }
243
244 for (stream, mut packet) in ictx.packets() {
245 let ist_index = stream.index();
246 let ost_index = stream_mapping[ist_index];
247 if ost_index < 0 {
248 continue;
249 }
250 let ost_time_base = ost_time_bases[ost_index as usize];
251 match transcoders.get_mut(&ist_index) {
252 Some(transcoder) => {
253 transcoder.send_packet_to_decoder(&packet);
254 transcoder.receive_and_process_decoded_frames(&mut octx, ost_time_base);
255 }
256 None => {
257 // Do stream copy on non-video streams.
258 packet.rescale_ts(ist_time_bases[ist_index], ost_time_base);
259 packet.set_position(-1);
260 packet.set_stream(ost_index as _);
261 packet.write_interleaved(&mut octx).unwrap();
262 }
263 }
264 }
265
266 // Flush encoders and decoders.
267 for (ost_index, transcoder) in transcoders.iter_mut() {
268 let ost_time_base = ost_time_bases[*ost_index];
269 transcoder.send_eof_to_decoder();
270 transcoder.receive_and_process_decoded_frames(&mut octx, ost_time_base);
271 transcoder.send_eof_to_encoder();
272 transcoder.receive_and_process_encoded_packets(&mut octx, ost_time_base);
273 }
274
275 octx.write_trailer().unwrap();
276}
More examples
examples/remux.rs (line 32)
7fn main() {
8 let input_file = env::args().nth(1).expect("missing input file");
9 let output_file = env::args().nth(2).expect("missing output file");
10
11 ffmpeg::init().unwrap();
12 log::set_level(log::Level::Warning);
13
14 let mut ictx = format::input(&input_file).unwrap();
15 let mut octx = format::output(&output_file).unwrap();
16
17 let mut stream_mapping = vec![0; ictx.nb_streams() as _];
18 let mut ist_time_bases = vec![Rational(0, 1); ictx.nb_streams() as _];
19 let mut ost_index = 0;
20 for (ist_index, ist) in ictx.streams().enumerate() {
21 let ist_medium = ist.parameters().medium();
22 if ist_medium != media::Type::Audio
23 && ist_medium != media::Type::Video
24 && ist_medium != media::Type::Subtitle
25 {
26 stream_mapping[ist_index] = -1;
27 continue;
28 }
29 stream_mapping[ist_index] = ost_index;
30 ist_time_bases[ist_index] = ist.time_base();
31 ost_index += 1;
32 let mut ost = octx.add_stream(encoder::find(codec::Id::None)).unwrap();
33 ost.set_parameters(ist.parameters());
34 // We need to set codec_tag to 0 lest we run into incompatible codec tag
35 // issues when muxing into a different container format. Unfortunately
36 // there's no high level API to do this (yet).
37 unsafe {
38 (*ost.parameters().as_mut_ptr()).codec_tag = 0;
39 }
40 }
41
42 octx.set_metadata(ictx.metadata().to_owned());
43 octx.write_header().unwrap();
44
45 for (stream, mut packet) in ictx.packets() {
46 let ist_index = stream.index();
47 let ost_index = stream_mapping[ist_index];
48 if ost_index < 0 {
49 continue;
50 }
51 let ost = octx.stream(ost_index as _).unwrap();
52 packet.rescale_ts(ist_time_bases[ist_index], ost.time_base());
53 packet.set_position(-1);
54 packet.set_stream(ost_index as _);
55 packet.write_interleaved(&mut octx).unwrap();
56 }
57
58 octx.write_trailer().unwrap();
59}
examples/transcode-audio.rs (line 87)
65fn transcoder<P: AsRef<Path> + ?Sized>(
66 ictx: &mut format::context::Input,
67 octx: &mut format::context::Output,
68 path: &P,
69 filter_spec: &str,
70) -> Result<Transcoder, ffmpeg::Error> {
71 let input = ictx
72 .streams()
73 .best(media::Type::Audio)
74 .expect("could not find best audio stream");
75 let context = ffmpeg::codec::context::Context::from_parameters(input.parameters())?;
76 let mut decoder = context.decoder().audio()?;
77 let codec = ffmpeg::encoder::find(octx.format().codec(path, media::Type::Audio))
78 .expect("failed to find encoder")
79 .audio()?;
80 let global = octx
81 .format()
82 .flags()
83 .contains(ffmpeg::format::flag::Flags::GLOBAL_HEADER);
84
85 decoder.set_parameters(input.parameters())?;
86
87 let mut output = octx.add_stream(codec)?;
88 let context = ffmpeg::codec::context::Context::from_parameters(output.parameters())?;
89 let mut encoder = context.encoder().audio()?;
90
91 let channel_layout = codec
92 .channel_layouts()
93 .map(|cls| cls.best(decoder.channel_layout().channels()))
94 .unwrap_or(ffmpeg::channel_layout::ChannelLayout::STEREO);
95
96 if global {
97 encoder.set_flags(ffmpeg::codec::flag::Flags::GLOBAL_HEADER);
98 }
99
100 encoder.set_rate(decoder.rate() as i32);
101 encoder.set_channel_layout(channel_layout);
102 #[cfg(not(feature = "ffmpeg_7_0"))]
103 {
104 encoder.set_channels(channel_layout.channels());
105 }
106 encoder.set_format(
107 codec
108 .formats()
109 .expect("unknown supported formats")
110 .next()
111 .unwrap(),
112 );
113 encoder.set_bit_rate(decoder.bit_rate());
114 encoder.set_max_bit_rate(decoder.max_bit_rate());
115
116 encoder.set_time_base((1, decoder.rate() as i32));
117 output.set_time_base((1, decoder.rate() as i32));
118
119 let encoder = encoder.open_as(codec)?;
120 output.set_parameters(&encoder);
121
122 let filter = filter(filter_spec, &decoder, &encoder)?;
123
124 let in_time_base = decoder.time_base();
125 let out_time_base = output.time_base();
126
127 Ok(Transcoder {
128 stream: input.index(),
129 filter,
130 decoder,
131 encoder,
132 in_time_base,
133 out_time_base,
134 })
135}
pub fn add_stream_with( &mut self, context: &Context, ) -> Result<StreamMut<'_>, Error>
Sourcepub fn add_chapter<R: Into<Rational>, S: AsRef<str>>(
&mut self,
id: i64,
time_base: R,
start: i64,
end: i64,
title: S,
) -> Result<ChapterMut<'_>, Error>
pub fn add_chapter<R: Into<Rational>, S: AsRef<str>>( &mut self, id: i64, time_base: R, start: i64, end: i64, title: S, ) -> Result<ChapterMut<'_>, Error>
Examples found in repository?
examples/chapters.rs (lines 31-37)
5fn main() {
6 ffmpeg::init().unwrap();
7
8 match ffmpeg::format::input(&env::args().nth(1).expect("missing input file name")) {
9 Ok(ictx) => {
10 println!("Nb chapters: {}", ictx.nb_chapters());
11
12 for chapter in ictx.chapters() {
13 println!("chapter id {}:", chapter.id());
14 println!("\ttime_base: {}", chapter.time_base());
15 println!("\tstart: {}", chapter.start());
16 println!("\tend: {}", chapter.end());
17
18 for (k, v) in chapter.metadata().iter() {
19 println!("\t{}: {}", k, v);
20 }
21 }
22
23 let mut octx = ffmpeg::format::output(&"test.mkv").expect("Couldn't open test file");
24
25 for chapter in ictx.chapters() {
26 let title = match chapter.metadata().get("title") {
27 Some(title) => String::from(title),
28 None => String::new(),
29 };
30
31 match octx.add_chapter(
32 chapter.id(),
33 chapter.time_base(),
34 chapter.start(),
35 chapter.end(),
36 &title,
37 ) {
38 Ok(chapter) => println!("Added chapter with id {} to output", chapter.id()),
39 Err(error) => {
40 println!("Error adding chapter with id: {} - {}", chapter.id(), error)
41 }
42 }
43 }
44
45 println!("\nOuput: nb chapters: {}", octx.nb_chapters());
46 for chapter in octx.chapters() {
47 println!("chapter id {}:", chapter.id());
48 println!("\ttime_base: {}", chapter.time_base());
49 println!("\tstart: {}", chapter.start());
50 println!("\tend: {}", chapter.end());
51 for (k, v) in chapter.metadata().iter() {
52 println!("\t{}: {}", k, v);
53 }
54 }
55 }
56
57 Err(error) => println!("error: {}", error),
58 }
59}
Sourcepub fn set_metadata(&mut self, dictionary: Dictionary<'_>)
pub fn set_metadata(&mut self, dictionary: Dictionary<'_>)
Examples found in repository?
examples/transcode-audio.rs (line 228)
208fn main() {
209 ffmpeg::init().unwrap();
210
211 let input = env::args().nth(1).expect("missing input");
212 let output = env::args().nth(2).expect("missing output");
213 let filter = env::args().nth(3).unwrap_or_else(|| "anull".to_owned());
214 let seek = env::args().nth(4).and_then(|s| s.parse::<i64>().ok());
215
216 let mut ictx = format::input(&input).unwrap();
217 let mut octx = format::output(&output).unwrap();
218 let mut transcoder = transcoder(&mut ictx, &mut octx, &output, &filter).unwrap();
219
220 if let Some(position) = seek {
221 // If the position was given in seconds, rescale it to ffmpegs base timebase.
222 let position = position.rescale((1, 1), rescale::TIME_BASE);
223 // If this seek was embedded in the transcoding loop, a call of `flush()`
224 // for every opened buffer after the successful seek would be advisable.
225 ictx.seek(position, ..position).unwrap();
226 }
227
228 octx.set_metadata(ictx.metadata().to_owned());
229 octx.write_header().unwrap();
230
231 for (stream, mut packet) in ictx.packets() {
232 if stream.index() == transcoder.stream {
233 packet.rescale_ts(stream.time_base(), transcoder.in_time_base);
234 transcoder.send_packet_to_decoder(&packet);
235 transcoder.receive_and_process_decoded_frames(&mut octx);
236 }
237 }
238
239 transcoder.send_eof_to_decoder();
240 transcoder.receive_and_process_decoded_frames(&mut octx);
241
242 transcoder.flush_filter();
243 transcoder.get_and_process_filtered_frames(&mut octx);
244
245 transcoder.send_eof_to_encoder();
246 transcoder.receive_and_process_encoded_packets(&mut octx);
247
248 octx.write_trailer().unwrap();
249}
More examples
examples/remux.rs (line 42)
7fn main() {
8 let input_file = env::args().nth(1).expect("missing input file");
9 let output_file = env::args().nth(2).expect("missing output file");
10
11 ffmpeg::init().unwrap();
12 log::set_level(log::Level::Warning);
13
14 let mut ictx = format::input(&input_file).unwrap();
15 let mut octx = format::output(&output_file).unwrap();
16
17 let mut stream_mapping = vec![0; ictx.nb_streams() as _];
18 let mut ist_time_bases = vec![Rational(0, 1); ictx.nb_streams() as _];
19 let mut ost_index = 0;
20 for (ist_index, ist) in ictx.streams().enumerate() {
21 let ist_medium = ist.parameters().medium();
22 if ist_medium != media::Type::Audio
23 && ist_medium != media::Type::Video
24 && ist_medium != media::Type::Subtitle
25 {
26 stream_mapping[ist_index] = -1;
27 continue;
28 }
29 stream_mapping[ist_index] = ost_index;
30 ist_time_bases[ist_index] = ist.time_base();
31 ost_index += 1;
32 let mut ost = octx.add_stream(encoder::find(codec::Id::None)).unwrap();
33 ost.set_parameters(ist.parameters());
34 // We need to set codec_tag to 0 lest we run into incompatible codec tag
35 // issues when muxing into a different container format. Unfortunately
36 // there's no high level API to do this (yet).
37 unsafe {
38 (*ost.parameters().as_mut_ptr()).codec_tag = 0;
39 }
40 }
41
42 octx.set_metadata(ictx.metadata().to_owned());
43 octx.write_header().unwrap();
44
45 for (stream, mut packet) in ictx.packets() {
46 let ist_index = stream.index();
47 let ost_index = stream_mapping[ist_index];
48 if ost_index < 0 {
49 continue;
50 }
51 let ost = octx.stream(ost_index as _).unwrap();
52 packet.rescale_ts(ist_time_bases[ist_index], ost.time_base());
53 packet.set_position(-1);
54 packet.set_stream(ost_index as _);
55 packet.write_interleaved(&mut octx).unwrap();
56 }
57
58 octx.write_trailer().unwrap();
59}
examples/transcode-x264.rs (line 236)
169fn main() {
170 let input_file = env::args().nth(1).expect("missing input file");
171 let output_file = env::args().nth(2).expect("missing output file");
172 let x264_opts = parse_opts(
173 env::args()
174 .nth(3)
175 .unwrap_or_else(|| DEFAULT_X264_OPTS.to_string()),
176 )
177 .expect("invalid x264 options string");
178
179 eprintln!("x264 options: {:?}", x264_opts);
180
181 ffmpeg::init().unwrap();
182 log::set_level(log::Level::Info);
183
184 let mut ictx = format::input(&input_file).unwrap();
185 let mut octx = format::output(&output_file).unwrap();
186
187 format::context::input::dump(&ictx, 0, Some(&input_file));
188
189 let best_video_stream_index = ictx
190 .streams()
191 .best(media::Type::Video)
192 .map(|stream| stream.index());
193 let mut stream_mapping: Vec<isize> = vec![0; ictx.nb_streams() as _];
194 let mut ist_time_bases = vec![Rational(0, 0); ictx.nb_streams() as _];
195 let mut ost_time_bases = vec![Rational(0, 0); ictx.nb_streams() as _];
196 let mut transcoders = HashMap::new();
197 let mut ost_index = 0;
198 for (ist_index, ist) in ictx.streams().enumerate() {
199 let ist_medium = ist.parameters().medium();
200 if ist_medium != media::Type::Audio
201 && ist_medium != media::Type::Video
202 && ist_medium != media::Type::Subtitle
203 {
204 stream_mapping[ist_index] = -1;
205 continue;
206 }
207 stream_mapping[ist_index] = ost_index;
208 ist_time_bases[ist_index] = ist.time_base();
209 if ist_medium == media::Type::Video {
210 // Initialize transcoder for video stream.
211 transcoders.insert(
212 ist_index,
213 Transcoder::new(
214 &ist,
215 &mut octx,
216 ost_index as _,
217 x264_opts.to_owned(),
218 Some(ist_index) == best_video_stream_index,
219 )
220 .unwrap(),
221 );
222 } else {
223 // Set up for stream copy for non-video stream.
224 let mut ost = octx.add_stream(encoder::find(codec::Id::None)).unwrap();
225 ost.set_parameters(ist.parameters());
226 // We need to set codec_tag to 0 lest we run into incompatible codec tag
227 // issues when muxing into a different container format. Unfortunately
228 // there's no high level API to do this (yet).
229 unsafe {
230 (*ost.parameters().as_mut_ptr()).codec_tag = 0;
231 }
232 }
233 ost_index += 1;
234 }
235
236 octx.set_metadata(ictx.metadata().to_owned());
237 format::context::output::dump(&octx, 0, Some(&output_file));
238 octx.write_header().unwrap();
239
240 for (ost_index, _) in octx.streams().enumerate() {
241 ost_time_bases[ost_index] = octx.stream(ost_index as _).unwrap().time_base();
242 }
243
244 for (stream, mut packet) in ictx.packets() {
245 let ist_index = stream.index();
246 let ost_index = stream_mapping[ist_index];
247 if ost_index < 0 {
248 continue;
249 }
250 let ost_time_base = ost_time_bases[ost_index as usize];
251 match transcoders.get_mut(&ist_index) {
252 Some(transcoder) => {
253 transcoder.send_packet_to_decoder(&packet);
254 transcoder.receive_and_process_decoded_frames(&mut octx, ost_time_base);
255 }
256 None => {
257 // Do stream copy on non-video streams.
258 packet.rescale_ts(ist_time_bases[ist_index], ost_time_base);
259 packet.set_position(-1);
260 packet.set_stream(ost_index as _);
261 packet.write_interleaved(&mut octx).unwrap();
262 }
263 }
264 }
265
266 // Flush encoders and decoders.
267 for (ost_index, transcoder) in transcoders.iter_mut() {
268 let ost_time_base = ost_time_bases[*ost_index];
269 transcoder.send_eof_to_decoder();
270 transcoder.receive_and_process_decoded_frames(&mut octx, ost_time_base);
271 transcoder.send_eof_to_encoder();
272 transcoder.receive_and_process_encoded_packets(&mut octx, ost_time_base);
273 }
274
275 octx.write_trailer().unwrap();
276}
Trait Implementations§
Auto Trait Implementations§
impl Freeze for Output
impl RefUnwindSafe for Output
impl !Sync for Output
impl Unpin for Output
impl UnwindSafe for Output
Blanket Implementations§
Source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
Source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more