ffmpreg 0.1.1

io → container → codec → transform → codec → container → io

Todo

• Minimal WAV pipeline

  End-to-end pipeline, audible audio.

  • Create project and basic folders (core, containers/wav, codecs/pcm, cli)
  • Implement Packet, Frame, Timebase
  • Read WAV and produce Packets (containers/wav/read.rs)
  • Write Packets back (containers/wav/write.rs)
  • PCM passthrough codec (decode → encode)
  • Connect pipeline: read → decode → encode → write
  • Minimal CLI: ffmpreg -i input.wav -o output.wav
  • Test with a simple WAV file

• Frame inspection / Media info

  Show internal frame info, minimal ffprobe alternative.

  • Add CLI option --show
  • Iterate over Packets → Frames
  • Display pts, sample count, channels, sample rate
  • Test output with example WAV

• Basic transform

  Apply simple operation on frames (e.g., gain)

  • Create transforms/gain.rs
  • Implement trait Transform
  • Integrate pipeline: read → decode → transform → encode → write
  • CLI: ffmpreg -filter gain=2.0
  • Test amplified audio

• Multi-file / batch

  Process multiple files using the same pipeline

  • CLI accepts multiple files or wildcard (folder/*.wav)
  • Iterate files → pipeline
  • Create separate output for each file
  • Test with 2-3 WAV files

• More containers

  Add raw video support (Y4M)

  • Create containers/y4m/read.rs and write.rs
  • Parse Y4M header (width, height, framerate, colorspace)
  • Produce Packets/Frames
  • Minimal pipeline: decode → encode → write
  • CLI: ffmpreg -i input.y4m -o output.y4m
  • Test with a Y4M file

• More codecs

  ADPCM, multi-channel PCM

  • Add ADPCM codec
  • Support multi-channel PCM
  • Pipeline: decode → transform → encode → write
  • Roundtrip tests for each codec

• Chained filters

  Apply multiple transforms in sequence

  • CLI: ffmpreg-filter gain=2.0 -filter normalize
  • Create transforms/normalize.rs
  • Pipeline applies filters in sequence
  • Test audio with two chained filters