I want to record my screen with audio for practice.
I saw recommendations to use this command line:
ffmpeg -f alsa -ac 2 -i pulse -f x11grab -r 25 -s 800x600 -i :0.0+200,100 -c:a pcm_s16le -c:v libx264 -preset ultrafast -crf 0 -threads 4 output.mkv
But ffmpeg
doesn't recognize the "alsa" format or the "pulse" file. If I remove both of those, it can capture the specified region of the screen just fine, but silently.
I'm using Linux Mint 17 Mate edition; I know I'm using ALSA. My testing audio source is VLC (which I thought used PulseAudio) playing an Ogg Vorbis file from the system tray.
This is my ffmpeg
configuration:
ffmpeg version 2.2.4 Copyright (c) 2000-2014 the FFmpeg developers
built on Jul 6 2014 09:48:53 with Ubuntu clang version 3.4-1ubuntu3 (tags/RELEASE_34/final) (based on LLVM 3.4)
configuration: --cc=clang --extra-libs=-ldl --disable-shared --disable-ffserver --enable-ffplay --disable-doc --enable-bzlib --enable-zlib --enable-libx264 --enable-libtheora --enable-libvorbis --enable-libmp3lame --enable-libass --enable-libfaac --enable-libvpx --enable-libopus --enable-x11grab --enable-nonfree --enable-gpl
libavutil 52. 66.100 / 52. 66.100
libavcodec 55. 52.102 / 55. 52.102
libavformat 55. 33.100 / 55. 33.100
libavdevice 55. 10.100 / 55. 10.100
libavfilter 4. 2.100 / 4. 2.100
libswscale 2. 5.102 / 2. 5.102
libswresample 0. 18.100 / 0. 18.100
libpostproc 52. 3.100 / 52. 3.100