[PD] pdp_vloopback ?

IOhannes m zmoelnig zmoelnig at iem.at
Mon Feb 14 09:13:28 CET 2011


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On 2011-02-14 00:40, Jack wrote:
> Le samedi 12 février 2011 à 13:51 -0200, Daniel Roviriego a écrit :
>> Hi all!
>>
>> v4l2loopback is working pretty nice! thanks for the awesome work,
>> Iohannes! I did suceed with the "v4l2sink" element (st-launch
>> videotestsrc ! ffmpegcolorspace ! v4l2sink device=/dev/videox)  .Now,
>> the doubts:
>>
>> . Which apps you know can already write to v4l2 devices ?

> All applications using gstreamer and v4l2sink ?
> You can find some application using gstreamer here :
> http://gstreamer.freedesktop.org/apps/

>> . What's the name of the gem object for the v4l2loopback ?
> There is no such object in GEM but in pdgst. And the name of this object
> is [v4l2sink].

that is one possibility.

>> I 'm using pd-extended from yesterday auto-build (GEM: ver: 0.93.SVN
>> rev3703 GEM: compiled: Feb 11 2011) and get no valid object for
>> "recordV4L2" .
> For example, you can use [pix_video] with [pix_writer] or [pix_write] or
> [pix_record]. But what do you want to do exactly ?

you should be able to use [pix_record] with v4l2loopback.
just do:
- - create [pix_record]
- - check at the console whether it prints something like "[pix_record]:
backend #1='V4L2'" (this will only happen the first time you create a
[pix_record] object for hygienic reasons)
- - if so, continue
- - set the codec to "v4l2" and the output filename to /dev/video1 (or
whatever your loopback-device is).
something like [codec v4l2, filename /dev/video1, record 1( should do
the trick.

f
gmasdr
IOhannes
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