> On Oct 10, 2022, at 10:43 PM, Ronak via ffmpeg-user <ffmpeg-user@ffmpeg.org> > wrote: > > Hi, > > I’m trying to concatenate a bunch of audio only MP4s together using FFmpeg’s > concat demuxer. > > When I tested this with concaving 4 MP4 files into a larger one, FFmpeg seems > to inject a variable amount of audio samples between concatenated files. > > Is there a way to avoid having FFmpeg inject those additional silent packets > while concatenating?
Here is my FFmpeg information: ffmpeg version N-95714-g20c5f4d835 Copyright (c) 2000-2019 the FFmpeg developers built with Apple clang version 13.1.6 (clang-1316.0.21.2.5) configuration: --enable-gpl --enable-nonfree --enable-libfdk-aac --enable-libmp3lame --enable-libopus --disable-encoders --enable-encoder='aac,ac3,ac3_fixed,eac3,flac,libfdk_aac,libmp3lame,libopus,pcm*' --disable-decoders --enable-decoder='aac,ac3,ac3_fixed,eac3,flac,libfdk_aac,libmp3lame,libopus,pcm*,mp3*,mpeg*' --disable-muxers --enable-muxer='ac3,adts,dash,eac3,flac,hls,mp3,mp4,mpegts,null,opus,wav,caf' --disable-demuxers --enable-demuxer='aa,aac,ac3,dash,eac3,flac,hls,mov,mp3,mpegts,pcm*,concat,wav,caf' --prefix=/Users/ronakp/ffmpeg And the command I’m running: ffmpeg -f concat -safe 0 -i concat.txt -c copy output_concat_chopped.mp4 -loglevel debug And the contents of the concat.txt file file 'output1.mp4' file 'output2.mp4' file 'output3.mp4' file 'output4.mp4' > > Does FFmpeg inject this silence regardless of what output there is? (Raw AAC > vs AAC in MP4). > > Ronak > _______________________________________________ > ffmpeg-user mailing list > ffmpeg-user@ffmpeg.org > https://ffmpeg.org/mailman/listinfo/ffmpeg-user > > To unsubscribe, visit link above, or email > ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe". _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
