On Tue, Jun 23, 2020 at 21:31:25 -0600, Simon Roberts wrote: > But I have no clue how to start with this. I tried simply adding more input > channels to my input specifications: > > ffmpeg -f decklink -i 'DeckLink Quad HDMI Recorder (1)' -f decklink -i > 'DeckLink Quad HDMI Recorder (4)' -c:v copy -c:a copy -metadata > title=DeckLinkCapture capture.mov
By default, ffmpeg only maps one of each stream type (video, audio, subs), as described here: https://ffmpeg.org/ffmpeg.html#Automatic-stream-selection In your case, you need to explicitly map multiple inputs: $ ffmpeg -f decklink -i 'DeckLink Quad HDMI Recorder (1)' -f decklink -i 'DeckLink Quad HDMI Recorder (4)' -map 0 -map 1 -c:v copy -c:a copy -metadata title=DeckLinkCapture capture.mov (Note the "-map 0 -map 1" addition.) Cheers, Moritz _______________________________________________ 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".
