I try to make screencast using avconv and I facing a problem.
I finally succeed to record both pc output and microphone input , the problem is that they're not merged in the output file.
(I saw they're an option filter_complex amix=inputs but its only in early release)
Is there any other way i can merge them (even if it's post production i don't care)
here the command line i use
avconv -f alsa -ac 2 -i pulse -f alsa -ac 2 -i hw:2,0 -filter_complex amix=inputs=2 -f x11grab -r 30 -s 1366x742 -i :0.0+1369,25 -map 0:0 -map 1:0 -map 2:0 -acodec flac -vcodec libx264 -preset:v superfast -crf 18 -threads 0 output.mkv
Best Answer
I routinely do this with
ffmpeg
, which has similar filters—so maybe this helps you. This assumes screen capture & pc audio inscreen.avi
, microphone capture inmic.wav
.I think
-map
picks channels to go into the output, so if I was debugging your original command line, I think you should lose-map 1:0 -map 2:0
(which is mapping the unmerged inputs into your output) and should instead name the output of the amix plugin (for instance toall_audio
as in my example) and have a-map '[all_audio]'
(to map the merged audio into your output). But I do not knowavconv
.