linux screen->video capture software

D.P. · 28 Feb 2007 at 17:35

I have some simulations I would like to record from the simulation window into a movie. I need a screen capture device that can capture my X-windows desktop.

I am using Kubuntu.

Thanks in advance.

gumbald · 28 Feb 2007 at 17:40

Istanbul, I think it's in the repositories

D.P. · 28 Feb 2007 at 17:50

installing, looks promising...

D.P. · 28 Feb 2007 at 17:53

ok, it appears to work?

Any good ogg to mpeg converters or off players?

D.P. · 28 Feb 2007 at 18:00

actuall, it seems to generate an empty file

FirebarUK · 28 Feb 2007 at 18:40

There is a good one that generates a flash movie, lemme dig out the name for you ...

FirebarUK · 28 Feb 2007 at 18:43

Vnc2swf

D.P. · 28 Feb 2007 at 19:20

will try it out tomorrow at work

Got a meeting with the supervisor on friday and have to show off what Ihave been working on, the last time I did this I releid on live demos of my software... bad idea :eek:

Tim

gumbald · 28 Feb 2007 at 20:12

Did the empty file have an extension?

D.P. · 28 Feb 2007 at 21:41

gumbald said:
Did the empty file have an extension?

it was a .ogg file, but was always size 2.7kb, so contained no actual data. Was very strange. The newest version looks just perfect for me, able to record from sub-windows. I tried to compile it but it requires lots of dependencies, some which apt-get doesn't find- these don't have packages and need o be compiled as well, and then some of them have further dependencies...

I'll investigate further tomorrow but can't spend too much time.

gumbald · 1 Mar 2007 at 00:15

I just did a

Code:

sudo apt-get install istanbul

and it installed fine, no complaints about dependencies.

Video I recorded did end in .ogg, but it played fine in everything I tried

D.P. · 1 Mar 2007 at 09:29

with istanbul it seems to record only 1 or 2 frames, chew up a load of CPU cycles, and general just hang.

vnc2swf seems to record soemthing, but it not my actual desktop :confused:

saffyre · 1 Mar 2007 at 10:55

Theres one i was using to record my old ubuntu beryl system called recordmydesktop uses a command line interface but its very good and will capture anything on screen and u can specify framerate etc. U can then use mencoder to convert the files to what u want.

Edit: might not be called recordmydesktop just my best guess

.

D.P. · 1 Mar 2007 at 13:20

record desktop seems to be better, but it is not saving anywhere near eno0ugh frames...
Saved 57 frames in a total of 1447 requests

I get a crappy slide show effect. I guess gthe problem is it can't get the data fast enough. I should problem just write some code to export frames as jpeg and then to a post conversion.

FirebarUK · 1 Mar 2007 at 18:30

Try vnc2swf!

D.P. · 2 Mar 2007 at 09:14

FirebarUK said:
Try vnc2swf!

I did, but it doesn't record my desktop per se, just some fanciful desktop that has Ark open and firefox... nokt the current desktop that i am actually displaying. Apart from that it seems fine!

FirebarUK · 2 Mar 2007 at 09:31

I have to say I've only seen someone use it, I haven't used it myself.

Did you ensure that you started a VNCserver, e.g;

x11vnc (on display:0)

or

krfb

Then to ensure vnc2swf looks at the right screen;

./vnc2swf.py -o myfile.swf localhost:0

If your using compiz (so Beryl etc) you'll need to use localhost:1

Hope that helps in some way, or I could just be stating the obvious

D.P. · 2 Mar 2007 at 13:21

Ok, its working now using x11vnc instead of vncserver (and running it sudo just incase)

Records movies but the same problem is that it is just too slow to be useful. I recorded at 600x400 res, and it does about 1 frame every 3 seconds or worse.
I gess this nis just a generic problem accessing the memory. Looks like I will have to make some code which saves snapshots ever few frames. and post convert.