
Mp4Muxer does not support out of order B-frames. Currently it silently writes out of order B-frames, producing an invalid file (with negative sample durations). Although `Mp4Extractor` is somehow able to process this invalid file and `Exoplayer` is able to play it but that is unexpected. The `sample.mp4` test file contains B frames. Other test files does not contain `H264 video + AAC audio` format hence created a new test file by running `sample.mp4` via `Transformer` after applying some effects. PiperOrigin-RevId: 594016144
Test data module
Provides sample data for media unit and instrumentation tests.