Recording desktop

[Feelin_froggy8877]

Well, I'm about past irritated w/ this, not having any luck w/ any of these. Either one don't work right, or the other don't work at all. Heard alot of good about qt-/gtk-recordmydesktop, but thats the one that don't wanna work at all, as I said in the first post.

[LepeKaname]

There is a way to screencast with ffmpeg:

http://ubuntuforums.org/archive/index.php/t-510546.html

I tried once and was not that bad... also you can screencast to JPEG, for example and then use mencoder?(not sure) to put all the pieces together.

I don't know why I also had a bad time when I tried to do it like 3 months ago...

[Feelin_froggy8877]

In my desperation for this, I tried "wink" running xfce. And to my surprise I am getting much better results. I'm recording at 35 fps and then rendering at 6 fps, I think if I play with those settings a bit more I might be able to get a decent screen-cast. Still having no luck with the others. As fot the ffmpeg meathod I am having trouble getting the patch...wget is returning "no such file or directory"

[Feelin_froggy8877]

Got a decent screencast with xvidcap. But....If I record in a slow fps it drops too many frames, and when I turn the fps up It plays in ffw. Witch the quality and everything is good, but I cant seem to figure out how to get the output file from kino to render in a slower fps. I've read through a bunch of online guides, maybe I'm missing it, maybe you cant do that w/ kino. Any suggestions for this?


http://s97.photobucket.com/albums/l2...=test-0000.flv

[LepeKaname]

Cool video... Doesn't look bad for me... a little bit fast, but fine. Was recorded with wink? I tried once wink but I don't know why it didn't do the job...

I just found here some commands I used last time with ffmpeg (to capture to PNG) and then encode it with mencoder:

# to get coordinates and sizes...
xwininfo -frame 

# Then:
ffmpeg -r 1 -s svga -t 20 -f x11grab -i :0.0 test-%03d.png
mencoder mf://*.png -ffourcc MPNG -mf fps=5 -ovc copy -nosound -o movie.avi

# Or ... These are directly from screen to video:
ffmpeg -v 3 -y -an -f x11grab -r 1 -s 1024x768 -t 10 -i :0.0 -vcodec ffv1 -sameq test.avi
ffmpeg -qscale 1 -r 24 -s 400x600 -t 20 -f x11grab -i :0.0+1000,200 test.mpeg

I got a decent quality...

[Feelin_froggy8877]

Yeah, its not bad...just the speed, cant figure out how to edit it and slow down the exported file. Seems I can do just about everything else with kino, except slow it down. And did'nt use wink for that 1. xvidcap. Was gonna give that ffmpeg patch a try, but I get 404 not found on the wget command.

[LepeKaname]

You can add these repositories (just adjust it accordingly to your system):

deb http://www.debian-multimedia.org stable main
deb http://packages.medibuntu.org/ intrepid free non-free

In the first one, ffmpeg is included.

"ffmpeg -r 1"

Means rate=1 fps, so it is good for tutorials, etc... if you want something faster then use -r 15

The *.png are lossless so the quality is 100%. However, when using mencoder to produce the video file, the quality drops even I use MPNG... , and I can't get to work the FFV1 codec. If I just could produce the video from those pictures without loosing quality could be great.

[Feelin_froggy8877]

Is it possible to dub mp3's with the ffmpeg command line?

[LepeKaname]

One alternative:

Create the video with ffmpeg (either directly or png based). Then while playing, record your voice, music, etc... and then just merge it with:

ffmpeg -i HQinput.avi -i audio.wav -map 0:0 -map 1:0 -acodec copy -vcodec copy HQresult.avi

ffmpeg -i HQresult.avi -vcodec mpeg4 -b 600k -acodec libmp3lame -ab 128k -f avi 4WEB.avi

The first line merges the video with the raw audio file.
The second line encodes the result to a compressed format.

(I recommend you audacity for your audio edition).

cheers!

[Gen2ly]

I use ffmpeg to capture the screen and it does a good job:

ffmpeg -f x11grab -r 25 -s 800x600 -i :0.0 /tmp/outputFile.mpg