Hi I compiled ffmpeg 3.1.1 with decklink (Blackmagic video capture card) support and I'd like to set the option to choose the audio and video input. I read the official docs https://www.ffmpeg.org/ffmpeg-devices.html#decklink but I can't get the options video_input and audio_input to work. Every time ffmpeg throw an error saying that it doesn't recognize the option and I tried to put them wherever it made sense.
I can capture a video flux with this command: ffmpeg -f decklink -i "Intensity Pro (1)"@5 -acodec copy -vcodec copy output.avi But as soon as I try to add the "-audio_input" or "-video_input" option somewhere it doesn't work Right now I have to set the audio and video input in the desktopvideo_gui software and light a candle before launching ffmpeg, works most of the time. Sometimes I have no audio. I just found this patch https://github.com/FFmpeg/FFmpeg/pull/212 and the corresponding ticket https://trac.ffmpeg.org/ticket/4991. I can check if it works tomorrow and if it does an example in the docs would be great. Examples for the video_pts and audio_pts options would also be great. I sometimes have sync issues and it could maybe help. I think I found the solution to my problem by writing this email. I'm sending it because I think an improvement to the documentation could help everyone. Have a nice day :) Adrien _______________________________________________ ffmpeg-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
