Get glc.
If starting the game in a terminal looks like `agame`, run this:
glc-capture agame
When you want the recording to start (and to stop), press
Shift + F8
Now convert the .glc file. If the game’s audio has been recorded, do this (after replacing the uppercase file names):
glc-play AGAME.glc -a 1 -o /tmp/agamesound.wav
glc-play AGAME.glc -o - -y 1 | ffmpeg -i - -i /tmp/agamesound.wav -acodec libmp3lame -ab 128k -ac 2 -vcodec libx264 -vpre slow -crf 22 -threads 0 "omgitworked.mp4"
If there is no audio, do this (after replacing the uppercase file name):
glc-play AGAME.glc -o - -y 1 | ffmpeg -i - -an -vcodec libx264 -vpre slow -crf 22 -threads 0 omgitworked.mp4
If you want to record a non-OpenGL game (many 2D games) or it just won’t work, perhaps the FFmpeg method will work!
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I would like to use this in a how-to for capture on a new live.TWIT.tv show. Granted, I use a *.mkv bit but; with your permission I will note the site in the how-to. In all honesty this was the 2′nd or 3′rd site I looked at before getting into GLC.
Sure, I don’t see anything here one would need to ask use permission for. :)
Thank you so much for this awesome software!
Now I can record my OpenGL application to make a demo video.
(The big thanks goes of course to Martin Erik Werner for the software, but I also want to thank you for the converting commands.)
Ha! Had to undelete your first post, which seemed to be 08/15 spam :D
Thanks for the nice tutorial. Here’s what worked for me:
I encountered a lot of jerkiness when trying to record the game, and after consulting [1] I settled for teh following command.
root@liv-laptop:~/tmp# nice -n -19 glc-capture –compression=none /usr/local/build/trigger/data/trigger
I also needed to reduce the resolution of the game to 640×480. As for converting the resulting .glc file to something more portable, after consulting [2] I did the following:
glc-play AGAME.glc -a 1 -o /tmp/agamesound.wav
Then manually convert the .wav file to .mp3 (~192KB/s) using ‘soundconverter’, and then
glc-play AGAME.glc -o – -y 1 | ffmpeg -i – -sameq -y /tmp/video.mp4
ffmpeg -i /tmp/agamesound.mp3 -acodec copy -i /tmp/video.mp4 -vcodec copy omgitworked.mp4
The audio part can still be improved and streamlined with ffmpeg, but I got the result that I wanted, so I didn’t bother to.
[1] http://archive09.linux.com/feature/143775
[2] https://github.com/nullkey/glc/wiki/Encode