On Thu, 15 Jul 2021 at 16:52, Mar Andrés López <[email protected]> wrote:
> Dear All, > > > I am using the following FFmpeg command for dash generation, > > > ffmpeg -i video.mpeg -preset superfast -r 30 -vcodec libx264 -acodec aac > -b:a 128k -ac 1 -ar 44100 -map v:0 -b:v:0 1500000 -s:v:0 768x432 -map v:0 > -b:v:1 750000 -s:v:1 640x360 -map v:0 -b:v:2 500000 -s:v:2 512x288 -map > 0:a? -f dash -adaptation_sets "id=0,streams=v id=1,streams=a" > -utc_timing_url manifest-mpd. > > > Currently the manifest is creating an empty adaptation set for videos > which do not contain audio: > > > <AdaptationSet id="1" contentType="audio" startWithSAP="1" > segmentAlignment="true" bitstreamSwitching="true"></AdaptationSet> > > > I thougth that by using -map 0:a? i would make it optional but it is not > the case. As you see above the adaptation set is still created. > > > What version of FFmpeg are you using? > > _______________________________________________ ffmpeg-user mailing list [email protected] https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
