Created
June 15, 2015 20:22
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avconv streaming to twitch
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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 | |
if [ ! -f ~/.twitch_key ]; then | |
echo "Error: Could not find file: ~/.twitch_key" | |
echo "Please create this file and copy past your stream key into it. Open this script for more details." | |
exit 1; | |
fi | |
# input resolution, currently fullscreen. | |
# you can set it manually in the format "WIDTHxHEIGHT" instead. | |
INRES=$(xwininfo -root | awk '/geometry/ {print $2}'i) | |
# output resolution. | |
# keep the aspect ratio the same or your stream will not fill the display. | |
OUTRES="1920x1200" | |
# input audio. You can use "/dev/dsp" for your primary audio input. | |
INAUD="pulse" | |
# target fps | |
FPS="10" | |
# video preset quality level. | |
# more FFMPEG presets avaiable in /usr/share/ffmpeg | |
# According to trac.ffmpeg.org/wiki/x264EncodingGuide the presets are ultrafast, superfast, veryfast, faster, fast, medium, slow, slower, veryslow, placebo | |
QUAL="fast" | |
# stream key. You can set this manually, or reference it from a hidden file like what is done here. | |
STREAM_KEY=$(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 -s "$OUTRES" \ | |
-g 2 \ | |
-acodec libmp3lame -b:a 64KB \ | |
-f flv -b:v 3500k -minrate 3500k -maxrate 3500k -bufsize 1835k -ar 44100 "$STREAM_URL" |
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