Module avutil 

Everything related to libavutil.

Structs

AVAudioFifo

Context for an Audio FIFO Buffer.

AVBufferRef

AVChannelLayout

AVChannelLayoutIter

Iterate over all standard channel layouts.

AVChannelLayoutRef

AVComponentDescriptor

AVDictionary

AVDictionaryEntry

AVDictionaryEntryMut

AVDictionaryEntryRef

AVDictionaryIter

Iterator over AVDictionary by reference.

AVDictionaryMut

AVDictionaryRef

AVFrame

AVFrameSideData

AVFrameSideDataRef

AVFrameWithImage

It’s a AVFrame bound with AVImage, the AVFrame references the buffer owned by the AVImage.

AVHWDeviceContext

AVHWDeviceTypeIter

Iterator over supported device types.

AVHWFramesContext

This struct describes a set or pool of “hardware” frames (i.e. those with data not located in normal system memory). All the frames in the pool are assumed to be allocated in the same way and interchangeable.

AVHWFramesContextMut

AVHWFramesContextRef

AVImage

AVMD5

AVMediaType

non exhaustive wrapper of AVMediaType

AVMem

AVMmap

A read-only file buffer, the file is mmaped when available.

AVPixFmtDescriptorRef

Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes of an image. It also stores the subsampling factors and number of components.

AVRational

Rational number (pair of numerator and denominator).

AVSamples

AvVersion

Version information decoded from av*_version()

Constants

FFMPEG_VERSION

The informative version string of the FFmpeg that ffi bindings were generated against.

VERSION

Descriptive semver version of the libavutil that ffi bindings were generated against.

Functions

av_add_q

Add two rationals. Returns b+c.

av_cmp_q

Compare two rationals.

av_d2q

Convert a double precision floating point number to a rational. In case of infinity, the returned value is expressed as {1, 0} or {-1, 0} depending on the sign.

av_div_q

Divide one rational by another. Returns b/c.

av_gcd_q

Return the best rational so that a and b are multiple of it. If the resulting denominator is larger than max_den, return def.

av_image_fill_arrays^⚠

Setup the data pointers and linesizes based on the specified image parameters and the provided array.

av_inv_q

Invert a rational. @param q value @return 1 / q

av_make_q

Create an AVRational.

av_mul_q

Multiply two rationals. Returns b*c.

av_nearer_q

Find which of the two rationals is closer to another rational.

av_q2d

Convert an AVRational to a double. @param a AVRational to convert @return a in floating-point form @see av_d2q()

av_q2intfloat

Convert an AVRational to a IEEE 32-bit float expressed in fixed-point format.

av_rescale_q

Rescale a 64-bit integer by 2 rational numbers.

av_rescale_q_rnd

Rescale a 64-bit integer by 2 rational numbers with specified rounding.

av_rescale_rnd

Rescale a 64-bit integer with specified rounding.

av_sub_q

Subtract one rational from another. Returns b-c.

configuration

Returns the configuration of the libavutil that has been linked (whether static or dynamic).

err2str

Return a description of the AVERROR code errnum.

get_bytes_per_sample

Return number of bytes per sample, return None when sample format is unknown.

get_media_type_string

Return a string describing the media_type enum, NULL if media_type is unknown.

get_packed_sample_fmt

Get the packed alternative form of the given sample format, return None on error.

get_pix_fmt_name

Return the name of the given pixel format, or None if pix_fmt is not recognized.

get_planar_sample_fmt

Get the planar alternative form of the given sample format. return None on error.

get_sample_fmt

Return a sample format corresponding to name, or None on error.

get_sample_fmt_name

Return the name of given sample_fmt, or None if sample_fmt is not recognized.

hwdevice_find_type_by_name

Look up an AVHWDeviceType by name.

hwdevice_get_type_name

Get the string name of an AVHWDeviceType.

hwdevice_iterate_types

Iterate over supported device types.

license

Returns the license of the libavutil that has been linked (whether static or dynamic).

opt_set^⚠

name: the name of the field to setval: if the field is not of a string type, then the given string is parsed. SI postfixes and some named scalars are supported. If the field is of a numeric type, it has to be a numeric or named scalar. Behavior with more than one scalar and +- infix operators is undefined. If the field is of a flags type, it has to be a sequence of numeric scalars or named flags separated by ‘+’ or ‘-’. Prefixing a flag with ‘+’ causes it to be set without affecting the other flags; similarly, ‘-’ unsets a flag. If the field is of a dictionary type, it has to be a ‘:’ separated list of key=value parameters. Values containing ‘:’ special characters must be escaped.search_flags: flags passed to av_opt_find2. I.e. if `AV_OPT_SEARCH_CHILDREN`` is passed here, then the option may be set on a child of obj.

opt_set_bin^⚠

Note: if val.len() exceeds i32::MAX, this function returns [RsmpegError::TryFromIntError].

opt_set_double^⚠

Safety

opt_set_image_size^⚠

Safety

opt_set_int^⚠

Safety

opt_set_pixel_fmt^⚠

Safety

opt_set_q^⚠

Safety

opt_set_sample_fmt^⚠

Safety

opt_set_video_rate^⚠

Safety

ra

return AVRational: num / den;

sample_fmt_is_planar

Check if the sample format is planar.

ts2str

Get a string containing a timestamp representation.

ts2timestr

Get a string containing a timestamp time representation.

version

Returns the semver version of the libavutil that has been linked (whether static or dynamic).

version_info

Return an informative version string of the FFmpeg that has been linked (whether static or dynamic).

Type Aliases

AVHWDeviceType

AVMotionVector

AVPixelFormat

Pixel format.

AVRounding

Rounding methods.

AVSampleFormat

Audio sample formats