change caps for image & imagefreeze

[gstream at ccc2.com]

Hi Stefan,

Confirming that is the correct pipeline and error still persists, but only
for image + imagefreeze, any video src(videoparse+imagefreeze) that goes
through imagefreeze re-sizes fine.

I have tried two caps in the pipe, the first to change format into AYUV
then the second to change size, but again same error.


Can you suggest a way to force the format before the size change in case
this is the issue?

deb squeezy 64
gst-inspect-0.10 version 0.10.35

thx
Art

> On 03/22/2012 10:29 AM, gstream at ccc2.com wrote:
>> Hi All,
>>
>> I have some code that works fine with video streams but when I use a
>> pngdec as the source I can not change the caps, gives error of
>>
>> GStreamer-CRITICAL **: gst_pad_set_caps: assertion `caps == NULL ||
>> gst_caps_is_fixed (caps)' failed
>> Error: code=3 message=not negotiated
>>
>> if the caps is set to the png actual input size it passes through with
>> no
>> error - ie the actual size is 300x169, in the below code the caps of
>> 100x100 triggers the error (pls note this is the java code but I am sure
>> you get the drift!)
>>
>>
>> Element source = ElementFactory.make("filesrc", "source");
>> Element vparse = ElementFactory.make("pngdec", "vparse");
>> Element frz1 = ElementFactory.make("imagefreeze", "frz1");
>> Element ffcs1 = ElementFactory.make("ffmpegcolorspace", "ffcs1");
>> Element vidsc1 = ElementFactory.make("videoscale", "vidsc1");
>> Element capsfilter1 = ElementFactory.make("capsfilter", "filter1");
>> capsfilter1.setCaps(Caps.fromString("video/x-raw-yuv,
>> format=(fourcc)AYUV,
>> width=100, height=100, framerate=30/1,bpp=16, depth=16 "));
>>
>> I am also adding this source to a videomixer2 overlay hence the cpas
>> ayuv
>
> How are the element linked? Is it source ! vparse ! frz1 ! ffcs1 !
> vidscl ! capsfilter1 ? That should actually work.
>
> Stefan
>> any thoughts on how I can change the size?
>>
>> thx
>> Art
>>
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>
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