Getting pad capabilities from PIPELINE.

[Ashwini Sharma]

Its for some other requirement of my app where in I need to display the
resolution and framerate.



On Fri, Oct 7, 2011 at 3:02 PM, Mike Mitchell
<mike.mitchell at panometric.net>wrote:

> Perhaps because unless the state playing already, videorate will not have
> decided what scale to negotiate yet.  Why do you need to know the caps that
> are negotiated automatically ?
>
> *Mike Mitchell*
>
>
>
>
>
> On Fri, Oct 7, 2011 at 1:57 AM, Ashwini Sharma <ak.ashwini at gmail.com>wrote:
>
>> My aim is to get the original video size. Thats why I get the caps at
>> ffmpegcsp. But I get the size 1280x720 which should not be the case until
>> after videoscale.
>>
>> My doubt is why i am getting the size 1280x720 at ffmpegcsp, which is
>> placed before the videsocale.
>>
>> Any reason to that?
>>
>> -Ashwini
>>
>> On Fri, Oct 7, 2011 at 1:57 PM, Mike Mitchell <
>> mike.mitchell at panometric.net> wrote:
>>
>>> I don't understand the problem as you described it.
>>>
>>> Have you tired: gst-launch -v --gst-plugin-spew
>>>
>>> In your psuedo pipeline, the scaling is last, so the video will still be
>>> 704x480 until after videoscale.  But it's my understanding you needs caps at
>>> the output of video scale to tell it to upscale. If you provide that it will
>>> probably do what you want.
>>>
>>> *Mike Mitchell*
>>>
>>>
>>>
>>>
>>>
>>> On Thu, Oct 6, 2011 at 9:33 PM, Ashwini Sharma <ak.ashwini at gmail.com>wrote:
>>>
>>>> Hi All,
>>>>
>>>>    I want to the get the negotiated caps of a pad, to find the
>>>> resolution (width and height) and frame-rate of the video.
>>>>
>>>> My pipeline looks like
>>>>
>>>>
>>>>  filesrc->mpegtsdemux->decodebin->ffmpegcolorspace->videoscale->xvimagesink.
>>>>
>>>> In this pipeline I am scaling my video to 1280x720 resolution from
>>>> 704x480
>>>>
>>>> When I get the "src" or "sink" pad of ffmpegcolorspace and print the
>>>> caps from that, the width and height are returned as 1280x720 and not the
>>>> original one 704x480.
>>>>
>>>> Can someone please tell me where am I going wrong.
>>>>
>>>> Thanks,
>>>> Ashwini Kumar
>>>>
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>>>>
>>>
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>>
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>
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