Can virtualbox capture video from its screen?

[kiven]

Creating a movie via VBox by intenal features, Is it possible?

[noteirak]

Do you mean something similar to VRDE video redirection?

[kiven]

I read "VRDE video redirection" and I didn't understand what is it?
I'm going to record some traning video-leture about Ubuntu, Mageia, Opensuse, etc which are installed on the Vbox.
Host: Debian Weezy
Guests: Ubuntu, Mageia, Opensuse, Manjaro, PCBSD
So, can virtualbox record video on its own? Is "VRDE video redirection" aimed for this?

The following link refers to an ability for capturing video, a built-in feature of Virtual Box! So, How does it works? I couldn't find any featur into virtualbox menu to enable/use this ability!
Link: virtualbox website > ticket > 4766

[noteirak]

After some search using the ticket reference you gave, the code was actually integrated into the Headless client, so via what I linked is actually the implementation of it.
See commit at r42654.

So follow the (very limited) instruction of VRDE Video Redirection.

[kiven]

The "VRDP Help" is incomplete and still I can not understand how I should do screen recording?

[noteirak]

well it seems it's only limited to videos playing in the guest, and not the actual full screen. So AFAIK there is no way to do what you ask directly using Virtualbox.

[mcerveny]

Hello.

See commit at r42654.
So follow the (very limited) instruction of VRDE Video Redirection.

This piece of software is deadcode, uncompilable and unsupported (as many other code in VB).
VBox is looking for "VBoxVideoRecFB.so" and entry point "VBoxRegisterVideoRecFB".
VideoCapture/FFmpegFB generates different one.

Intended use:

VBoxHeadles
  ...
   -c, -capture, --capture               Record the VM screen output to a file
   -w, --width                           Frame width when recording
   -h, --height                          Frame height when recording
   -r, --bitrate                         Recording bit rate when recording
   -f, --filename                        File name when recording. The codec used
                                         will be chosen based on the file extension

You get: 'Failed to load the video capture extension'

M.C>

[michaln]

This piece of software is deadcode, uncompilable and unsupported (as many other code in VB).

Unsupported yes. Dead code and uncompilable, not so much. You're just assuming far more than you should.

We have been using the FFmpeg encoder internally for years, but it is unsupported because we cannot legally distribute it. In the future, there may be a supported alternative; if and when that happens, the FFmpeg support will be truly dead code and will be removed.

[mcerveny]

Hello.

We have been using the FFmpeg encoder internally for years, but it is unsupported because we cannot legally distribute it.

Can you disclosure how to compile, integrate and use (not distribute) FFmpeg "video recording" plugin from sources ?

Thanks, M.C>

[bentito]

I'd like to second the request for pointers on how to compile the code with ffmpeg support so that the video capture promised by the command line args can actually work.

Or better yet just send out a package that is built, instructions for where to get the "bad" video libraries that violate legal mumbo jumbo and instructions for plugging them in.

[michaln]

Sorry, you're asking at just the wrong time. If you look at the current OSE sources, you will see that FFmpeg is in the process of being replaced by WebM (libvpx). See for example https://www.virtualbox.org/changeset/46123/vbox and preceding changesets.