Created
December 3, 2013 15:33
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#! /bin/bash | |
# streaming on Ubuntu via ffmpeg. | |
# see http://ubuntuguide.org/wiki/Screencasts for full documentation | |
# see http://www.thegameengine.org/miscellaneous/streaming-twitch-tv-ubuntu/ | |
# for instructions on how to use this gist | |
# input resolution, currently fullscreen. | |
# you can set it manually in the format "WIDTHxHEIGHT" instead. | |
INRES=$(xwininfo -root | awk '/geometry/ {print $2}'i) | |
# output resolution. | |
# keep the aspect ratio the same or your stream will not fill the display. | |
OUTRES="640x360" | |
# input audio. You can use "/dev/dsp" for your primary audio input. | |
INAUD="pulse" | |
# target fps | |
FPS="30" | |
# video preset quality level. | |
# more FFMPEG presets avaiable in /usr/share/ffmpeg | |
QUAL="fast" | |
# stream key. You can set this manually, or reference it from a hidden file like what is done here. | |
STREAM_KEY=$(cat ~/.twitch_key) | |
# stream url. Note the formats for twitch.tv and justin.tv | |
# twitch:"rtmp://live.twitch.tv/app/$STREAM_KEY" | |
# justin:"rtmp://live.justin.tv/app/$STREAM_KEY" | |
STREAM_URL="rtmp://live.twitch.tv/app/$STREAM_KEY" | |
avconv \ | |
-f alsa -ac 2 -i "$INAUD" \ | |
-f x11grab -s "$INRES" -r "$FPS" -i :0.0 \ | |
-vcodec libx264 -pix_fmt yuv420p -s "$OUTRES" -preset:v "$QUAL" \ | |
-acodec libmp3lame -threads 6 -qscale 5 -b 64KB \ | |
-f flv -ar 22050 "$STREAM_URL" |
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