Accessing video RGB data

[Sami Pietilä]

Hi,

How can I turn sync off on the sink?

I tried: g_object_set (G_OBJECT (sink), "synchronous", false, NULL);

Sink is "ximagesink".

Frames are still being dropped.

2011/10/8 Stefan Sauer <ensonic at hora-obscura.de>:
> On 10/07/2011 02:20 PM, Erick Pérez wrote:
>>>> I don't need to modify movie frames, but I need to read them and do
>>>> some calculations. Calculations might take some time, so I need a way
>>>> to control how gstreamers feeds the frames. That is, I need a way to
>>>> ask next frame from gstreamer instead of gstreamer feeding them at a
>>>> constant rate.
>>>>
>>>> How can I get a new frame only when requested?
>>> In your pad_probe just do the calculation as you need. ximagesink will
>>> throw away late frames. A smarter way might be to do:
>>>
>>> ... ! colorspace ! tee name = t ! queue leaky=upstream ! appsink
>>>                                              t. ! queue ! ximagesink
>>>
>>> This way you can use get the frames from appsink (better that using
>>> pad-probes or fakesink with the handoff signal). Also the playback gets
>>> not disturbed and you process the frames on appsink as you manage. All
>>> other frames get dropped.
>> Hey, I'm in the same situation, I want to get the frames, and I know I
>> can manage the frame rate by using something videorate element, but
>> that will drop frames. I want to process some stuff for every frame on
>> the picture, so I need to slow down the frame rate playback sometimes,
>> but without losing frames. I've seen a way to slow down the playback
>> using gnonlin filesource element, but that doesn't convince me either.
>> Is there other way ?
>>
> If you don't want to drop frames and just process frames as fast as you
> can turn sync off on the sink.
>
> Stefan
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