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
Not works:
Unknown codec ‘libx264′
I think this is related to what your distro ships by default. Look for ffmpeg from a repo that has no restrictions.
I need to ask beause I feel like I’m missing something here: I’m trying to use GLC to record some videos but in the terminal I don’t know what I’m supposed to put in place of ‘agame’…if it’s a specific application name related to the game I’m playing then I have no idea what to put because nowhere will give me an example of what to put here. You are my shining beacon if you can illuminate this issue…
Shame on me for not being clear.
It’s the command that starts your game.
for example `trigger` or `lugaru`.
Much appreciated. Let’s see if I can get this mother to work… :)