Rpi: v4l2src + omxh264enc + tcpserversink

[Krutskikh Ivan]

Ok, I've actually found a solution. 1) gst-omx from default rasbian wheezy
does not work. I guess it's just too old. 2) Building gst-omx from head src
also fails: gsteamer is unable to load both encoder or decoder. Maybe it's
just broken, maybe gstreamer from wheezy is just too old to comply with it.
3) gst-omx from http://vontaene.de/raspbian-updates/ does the trick with
default settings. I'm not sure why, but that's the fact for now.

2015-06-05 6:39 GMT+03:00 Krutskikh Ivan <stein.hak at gmail.com>:

> I'm making a screencaster using epiphan dvi to usb and rpi. But I'll keep
> that in mind, tnx.
>
> 2015-06-05 4:23 GMT+03:00 Jan Schmidt <thaytan at noraisin.net>:
>
>> On 05/06/15 05:56, Krutskikh Ivan wrote:
>>
>>> Oh... I should really try that out. Thanks!
>>>
>>
>> If you're using the RPi internal camera, you can also try my
>> gst-rpicamsrc element, which uses the same method as raspivid to capture
>> and output H.264 directly, without going through gst-omx.
>>
>> https://github.com/thaytan/gst-rpicamsrc
>>
>> Cheers,
>> Jan.
>>
>>
>>> 2015-06-04 22:44 GMT+03:00 Tim Müller <tim at centricular.com
>>> <mailto:tim at centricular.com>>:
>>>
>>>
>>>     On Thu, 2015-06-04 at 22:16 +0300, Krutskikh Ivan wrote:
>>>
>>>     Hi,
>>>
>>>     > Ok, after a lot of googling I've seemed to find out the very viable
>>>     > explanation on what is happening:
>>>     >
>>>     > "Short answer why your pipeline don't work now.
>>>     > omxh264enc (h264 encoder) generate something call SPS NAL.
>>>     > This SPS NAL contain basic information as width,
>>>     > height ,................ all basic information that you neeed
>>> before
>>>     > you start decoding something.
>>>     > And this buffer is generated only ONCE at start.
>>>     > And tcpserver dump this sps as you connect to server after some
>>> time."
>>>     >
>>>     >
>>>     > The source is
>>>     >
>>> https://www.raspberrypi.org/forums/viewtopic.php?f=38&t=6852&start=225
>>>     >
>>>     >
>>>     > The are also some pathes to gst-omx attached. I would try those
>>> after
>>>     > weekend. I remember now that the same issue stoped me from
>>> streaming
>>>     > h264 from local files on the server...
>>>
>>>     It sounds like you're running into
>>>
>>>     https://bugzilla.gnome.org/show_bug.cgi?id=706872
>>>
>>>     which might only be fixed in git.
>>>
>>>     You should also be able to use the h264parse element to insert
>>> SPS/PPS
>>>     regularly by setting config-interval=1 .
>>>
>>>     Cheers
>>>       -Tim
>>>
>>>     --
>>>     Tim Müller, Centricular Ltd - http://www.centricular.com
>>>
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>>>
>>>
>>>
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