Hi, I've been doing some testing of AAC encoded audio files with both avconv and the Nero AAC encoder tool and have been having some trouble playing them back. I'm not sure if this is a red-herring or not but all of the files generated by avconv report the average bitrate of the files as zero, despite showing a non-zero average during encoding progress:
I also tried a few of the different AAC codecs avconv supports (libfaac, libvo_aacenc, libfdk_aac) just to confirm there was nothing funky going on there: # mp4info 1mT1O677gwdP-libfaac.mp4 mp4info version trunk-r479 1mT1O677gwdP-libfaac.mp4: Track Type Info 1 audio MPEG-4 AAC LC, 108.321 secs, 0 kbps, 44100 Hz Encoded with: Lavf53.21.0 Compare this with the Nero encoded file: # mp4info 1mT1O677gwdP-nero.mp4 mp4info version 2.0.0 1mT1O677gwdP-nero.mp4: Track Type Info 1 audio MPEG-4 AAC LC, 108.344 secs, 96 kbps, 44100 Hz Encoded with: Nero AAC codec / 1.5.4.0 I verified this in the headers with mp4file --dump and a hex editor. There have been a few threads about this topic in the past and apparently there was a commit last year [1] that fixed it. Given this, I'm not sure why it is still happening (unless a regression has occurred). Any thoughts? Best Regards, Oliver. [1] http://git.videolan.org/?p=ffmpeg.git;a=commit;h=0ba8485666f532f2dbab716f74e1be1189102c89 _______________________________________________ libav-tools mailing list [email protected] https://lists.libav.org/mailman/listinfo/libav-tools
