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. A lot of thanks, Best regards. P Please consider the environment before printing this e-mail. _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".