On 8/29/20, [email protected] <[email protected]> wrote: > For dev I'm using v. 4.3.1. and also the latest Git version of ffmpeg > (Zeranoe's Windows 64 builds). > > I get "strange" problems when running the official example code for decoding > audio > > https://github.com/FFmpeg/FFmpeg/blob/master/doc/examples/decode_audio.c > > MP3DirectCut(Lib-bass).mp3 > > http://www.mediafire.com/file/ozmjjcpwyhhdnr7/MP3DirectCut(Lib-bass).mp3/file > > Generates pcm, but outputs: > > "Warning: the sample format the decoder produced is planar (s16p). > This example will output the first channel only." > > But the output pcm has both channels!?? > > When recoding the above mp3 to wav with ffmpeg (4.1.4, no error message) > > http://www.mediafire.com/file/gcq7ryg43pd57q5/ffmpeg4.1.4.wav/file > > and also when recoding the latter to mp3 again > > http://www.mediafire.com/file/ij865dkrprn2lta/ffmpeg4.1.4_recode.mp3/file > > the example code breaks and produces these error messages ("mp2 @ ..." also > for the wav file): > > avcodec_send_packet () > from within: > "[mp2 @ <someAddress>] Header missing" > and returns error code -1094995529 > (= "Invalid data found when processing input") > > It produces that error message for literally all other formats I tried, and > also when written with another editor (Audition 3.0). > But all the files play and show fine on all programs I have. > > I'm at a lost at this point. What is going on and wrong here?
Just because decode_audio does not skip ID3 metadata from start of later mp3 file. That is reasonably as program is just demonstration and not full blown solution. > > _______________________________________________ > Libav-user mailing list > [email protected] > https://ffmpeg.org/mailman/listinfo/libav-user > > To unsubscribe, visit link above, or email > [email protected] with subject "unsubscribe". _______________________________________________ Libav-user mailing list [email protected] https://ffmpeg.org/mailman/listinfo/libav-user To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
