Round trip wav->mp3->wav now preserves the correct number of samples. Remuxing mp3->mp3 with -c:a copy also preserves any existing gapless metadata in the Info tag.
The code in libmp3lame.c to set AV_PKT_DATA_SKIP_SAMPLES was mostly copied from libopusenc.c. Jon Toohill (3): lavc/libmp3lame: send encoder padding in side data of final packet lavf/mp3enc: write encoder delay/padding upon closing lavf/mp3dec: read encoder delay/padding from Info tag libavcodec/libmp3lame.c | 21 ++++++++++++++++++++- libavformat/mp3dec.c | 3 ++- libavformat/mp3enc.c | 32 +++++++++++++++++++++++++------- tests/ref/fate/audiomatch-square-mp3 | 2 +- tests/ref/fate/gapless-mp3 | 10 +++++----- 5 files changed, 53 insertions(+), 15 deletions(-) -- 2.8.0.rc3.226.g39d4020 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
