I was still able to give avconv a quick test once I remembered I have an old netbook with Debian installed on it lying around. Also the differences to ffmpeg are for my use case subtle enough to be dealt with, so I think this was a one-shot and I don't have to revisit this again.
]]>External libraries:
bzlib libxcb libxcb_shm
libxcb_xfixes zlib
Enabled indevs:
alsa dv1394 fbdev
jack oss v4l2
$ avconv -f x11grab -s cif -r 25 -i :0.0+10,20 /tmp/out.mpg
avconv version v13_dev0-858-g17aeee583, Copyright (c) 2000-2017 the Libav developers
built on Feb 17 2017 14:55:23 with gcc 6.3.1 (GCC) 20170109
Unknown input format: 'x11grab'
Also x11grab is not listed in the configure output, even though I think it should be listed if enabled. I tried explicitly compiling it with the "--enable-libxcb --enable-libxcb-shm --enable-libxcb-xfixes" configure flags, but same result. libxcb is installed of course, x11grab is working fine with ffmpeg (standard Arch package here).
Has anybody some experience with avconv or some idea what is happening here?
Thanks
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