On 04/04/15 15:23, Mathieu Malaterre wrote: > Hi, > > I am trying to understand why avconv is breaking sound on a working > AVI input. I can play a video on my FreeBox V5 just fine. However > after copy: > > $ avconv -i input.avi -codec copy output.avi > > The generated `output.avi` appears as non working on my FreeBox V5 > player. If I compare (avprobe -show_streams) here is what I see: > > $ avprobe -show_streams input.avi > /tmp/1 > $ avprobe -show_streams output.avi > /tmp/2 > $ diff -u /tmp/1 /tmp/2 > --- /tmp/1 2015-04-04 15:13:53.222288651 +0200 > +++ /tmp/2 2015-04-04 15:19:19.898275904 +0200 > @@ -26,15 +26,15 @@ > codec_long_name=ATSC A/52A (AC-3) > codec_type=audio > codec_time_base=1/48000 > -codec_tag_string=[0] [0][0] > -codec_tag=0x2000 > +codec_tag_string=[254][255][0][0] > +codec_tag=0xfffe > sample_rate=48000.000000 > channels=6 > bits_per_sample=0 > r_frame_rate=0/0 > -avg_frame_rate=125/4 > -time_base=1/56000 > +avg_frame_rate=0/0 > +time_base=4/125 > start_time=0.000000 > duration=N/A > -nb_frames=127391040 > +nb_frames=33174 > [/STREAM] > > Does the `codec_tag_string` value have any influence here ?
I think so, if you add -tag:a 0x2000 does it work? lu _______________________________________________ libav-tools mailing list [email protected] https://lists.libav.org/mailman/listinfo/libav-tools
