2011/8/26 Ole Dittmann <[email protected]>: > I found the same thing with aac and wmv. > Already reported it a few months ago. > But that was during the whole ffmpeg/libav incident so it probably got > wasted. > Just took your post as reason to repeat the ticket: > > https://ffmpeg.org/trac/ffmpeg/ticket/420 > > > Am 25.08.2011 13:04, schrieb Prunk Dump: > > When seeking in a mp3 file, the decoder produce a noise depending of > when the seek is done. This is illustrated in the attached file > "audioBitStream.jpg". > > ->If I seek to timestamp 0 while playing “hight” sound, a noise is > clearly visible when I restart decoding (see first stereo stream : > dump10noise.raw) > > ->If I seek to timestamp 0 while playing “silence”, no noise is > produced (see second stereo stream : dump10clear.raw) > > So it seems that avcodec_flush_buffers doesn't completely flush all > the buffers of the codec. We see that it keep track of the last > decoded sound. > > So is this a bug ? Or it's me that have I missed something? > > > _______________________________________________ > Libav-user mailing list > [email protected] > http://ffmpeg.org/mailman/listinfo/libav-user > > -- > ///////////////////////////////////////////////////////////////////////////////////////// > > Ole Dittmann – software developer > > Mad Hat GmbH, Ludwigstraße 182a, 63067 Offenbach > »Tel.: +49 (0)69 829 003 32 »Fax: +49 (0)69 829 003 23 > »mobile: +49 (0)151 195 656 32 > »[email protected] »www.madhat.de > > Geschäftsführer: Thomas Lutz, Gernot Pflüger > Amtsgericht Offenbach – HRB: 12485 > > ///////////////////////////////////////////////////////////////////////////////////////// > _______________________________________________ > Libav-user mailing list > [email protected] > http://ffmpeg.org/mailman/listinfo/libav-user > >
I have updated the ticket with my own demonstration program. This bug is really annoying. It's strange that it appears in the widely used mp3 codec ! _______________________________________________ Libav-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/libav-user
