On 01/26/2015 12:29 AM, Moritz Barsnick wrote:
On Sun, Jan 25, 2015 at 22:17:39 -0700, jd1008 wrote:
Now that I have x11grab working, how do I add to it the audio
that is coming from the speakers or the audio driver?
ffmpeg supports quite a few audio sources. On Linux, alsa and
pulseaudio are the most likely candidates.
Check
https://www.ffmpeg.org/ffmpeg-devices.html
With pulseaudio, you can redirect what is going to your speakers (even
from just a single program) to a separate stream, which you would then
use as input to ffmpeg. You'll need to google for that separately
though. ;-)
Moritz
Tried to list devices by the command provided on the web link you provided:
$ ffmpeg -f avfoundation -list_devices true -i ""
ffmpeg version N-51556-ge278500 Copyright (c) 2000-2013 the FFmpeg
developers
built on Apr 4 2013 05:11:43 with gcc 4.6 (Debian 4.6.3-1)
configuration: --prefix=/root/ffmpeg-static/32bit --arch=x86_32
--extra-cflags='-m32 -I/root/ffmpeg-static/32bit/include -static'
--extra-ldflags='-m32 -L/root/ffmpeg-static/32bit/lib -static'
--extra-libs='-lxml2 -lexpat -lfreetype' --enable-static
--disable-shared --disable-ffserver --disable-doc --enable-bzlib
--enable-zlib --enable-postproc --enable-runtime-cpudetect
--enable-libx264 --enable-gpl --enable-libtheora --enable-libvorbis
--enable-libmp3lame --enable-gray --enable-libass --enable-libfreetype
--enable-libopenjpeg --enable-libspeex --enable-libvo-aacenc
--enable-libvo-amrwbenc --enable-version3 --enable-libvpx
libavutil 52. 24.100 / 52. 24.100
libavcodec 55. 2.100 / 55. 2.100
libavformat 55. 1.100 / 55. 1.100
libavdevice 55. 0.100 / 55. 0.100
libavfilter 3. 49.100 / 3. 49.100
libswscale 2. 2.100 / 2. 2.100
libswresample 0. 17.102 / 0. 17.102
libpostproc 52. 2.100 / 52. 2.100
Could not find option 'list_devices' in any of the FFmpeg subsystems
(codec, format, scaler, resampler contexts)
Unrecognized option 'list_devices'.
Error splitting the argument list: Option not found
My ffmpeg packages are:
ffmpeg-compat-0.6.7-8.fc21.x86_64
gstreamer-ffmpeg-0.10.13-14.fc21.x86_64
ffmpeg-compat-devel-0.6.7-8.fc21.x86_64
ffmpeg-libs-2.4.6-1.fc21.x86_64
ffmpeg-devel-2.4.6-1.fc21.x86_64
ffmpeg-2.4.6-1.fc21.x86_64
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