Crate viser_ffmpeg 

FFmpeg/FFprobe wrapper for the viser video-encoding-optimizer workspace.

Provides typed primitives (codecs, resolutions, rate-control modes) plus functions to encode (encode), probe media (probe), and resolve the ffmpeg/ffprobe binary paths. A ProbeCache deduplicates probe calls.

Structs

EncodeJob

Parameters for a single encode.

EncodeResult

Output of a completed encode.

FfmpegVersion

Parsed FFmpeg version.

FormatInfo

Container-level metadata reported by ffprobe.

ProbeCache

Thread-safe probe result cache to avoid redundant ffprobe calls.

ProbeResult

Parsed result of an ffprobe run: container format plus all streams.

Progress

Real-time encoding progress info parsed from FFmpeg.

Resolution

Video resolution.

StreamInfo

Per-stream metadata reported by ffprobe.

Enums

Codec

Supported video codec.

ProbeEngine

Backend used to probe media files.

RateControlMode

Rate control mode for encoding.

Constants

RES_240P

426x240, 16:9.

RES_360P

640x360, 16:9.

RES_480P

854x480 (SD), 16:9.

RES_720P

1280x720 (HD), 16:9.

RES_1080P

1920x1080 (Full HD), 16:9.

RES_1440P

2560x1440 (QHD), 16:9.

RES_2160P

3840x2160 (4K UHD), 16:9.

Functions

check_ffmpeg

Run ffmpeg -version and parse the version line. Returns an error if the binary is not found or the version is too old.

check_ffprobe

Run ffprobe -version and parse the version line. Returns an error if ffprobe is not found.

concat

Concatenates multiple encoded chunks into a single output without re-encoding.

encode

Runs an FFmpeg encode job. Progress updates are sent on the channel if provided.

extract

Copies a segment of a video file without re-encoding.

ffmpeg_path

Returns the path to the ffmpeg binary.

ffprobe_path

Returns the path to the ffprobe binary.

probe

Runs ffprobe on the given file and returns parsed results.

validate_vmaf_model

Validate that the given VMAF model name is recognized by libvmaf.