vaapi, tee and pango overlay

[Wolfgang Grandegger]

Hello,

still trying to understand how things could be done efficiently with
GStreamer. Next I would like to receive and display a JPEG encoded
RTP-Stream and write it in H.264 format to a file at the same time. Here
is the pipeline I use:

# gst-launch-1.0 udpsrc port=50004 \
  ! application/x-rtp,encoding-name=JPEG,payload=26 \
  ! queue ! rtpjpegdepay ! vaapijpegdec ! timeoverlay \
  ! tee name=t \
  t. ! queue ! vaapipostproc ! kmssink \
  t. ! queue ! vaapih264enc ! filesink location=/tmp/test.h264

This does not work! The screen goes black and nothing is recorded to the
file. But it work without "timeoverlay" and also with "jpegdec" instead
of "vaapijpegdec". Both streams also work without tee: Is this a known
issue with VAAPI... or have I missed something!

Thanks,

Wolfgang.
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[Nicolas Dufresne-5]

Le jeudi 14 juin 2018 à 19:35 +0200, Wolfgang Grandegger a écrit :

> still trying to understand how things could be done efficiently with
> GStreamer. Next I would like to receive and display a JPEG encoded
> RTP-Stream and write it in H.264 format to a file at the same time. Here
> is the pipeline I use:
>
> # gst-launch-1.0 udpsrc port=50004 \
>   ! application/x-rtp,encoding-name=JPEG,payload=26 \
>   ! queue ! rtpjpegdepay ! vaapijpegdec ! timeoverlay \
>   ! tee name=t \
>   t. ! queue ! vaapipostproc ! kmssink \
>   t. ! queue ! vaapih264enc ! filesink location=/tmp/test.h264
>
> This does not work! The screen goes black and nothing is recorded to the
> file. But it work without "timeoverlay" and also with "jpegdec" instead
> of "vaapijpegdec". Both streams also work without tee: Is this a known
> issue with VAAPI... or have I missed something!

Have you thought of adding vaapipostproc right after the decoder ?

Nicolas
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[Wolfgang Grandegger]

Am 14.06.2018 um 20:53 schrieb Nicolas Dufresne:

> Le jeudi 14 juin 2018 à 19:35 +0200, Wolfgang Grandegger a écrit :
>> still trying to understand how things could be done efficiently with
>> GStreamer. Next I would like to receive and display a JPEG encoded
>> RTP-Stream and write it in H.264 format to a file at the same time. Here
>> is the pipeline I use:
>>
>> # gst-launch-1.0 udpsrc port=50004 \
>>   ! application/x-rtp,encoding-name=JPEG,payload=26 \
>>   ! queue ! rtpjpegdepay ! vaapijpegdec ! timeoverlay \
>>   ! tee name=t \
>>   t. ! queue ! vaapipostproc ! kmssink \
>>   t. ! queue ! vaapih264enc ! filesink location=/tmp/test.h264
>>
>> This does not work! The screen goes black and nothing is recorded to the
>> file. But it work without "timeoverlay" and also with "jpegdec" instead
>> of "vaapijpegdec". Both streams also work without tee: Is this a known
>> issue with VAAPI... or have I missed something!
>
> Have you thought of adding vaapipostproc right after the decoder ?

I already tried that! It doesn't help.

Wolfgang.
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[Wolfgang Grandegger]

Am 14.06.2018 um 20:57 schrieb Wolfgang Grandegger:

> Am 14.06.2018 um 20:53 schrieb Nicolas Dufresne:
>> Le jeudi 14 juin 2018 à 19:35 +0200, Wolfgang Grandegger a écrit :
>>> still trying to understand how things could be done efficiently with
>>> GStreamer. Next I would like to receive and display a JPEG encoded
>>> RTP-Stream and write it in H.264 format to a file at the same time. Here
>>> is the pipeline I use:
>>>
>>> # gst-launch-1.0 udpsrc port=50004 \
>>>   ! application/x-rtp,encoding-name=JPEG,payload=26 \
>>>   ! queue ! rtpjpegdepay ! vaapijpegdec ! timeoverlay \
>>>   ! tee name=t \
>>>   t. ! queue ! vaapipostproc ! kmssink \
>>>   t. ! queue ! vaapih264enc ! filesink location=/tmp/test.h264
>>>
>>> This does not work! The screen goes black and nothing is recorded to the
>>> file. But it work without "timeoverlay" and also with "jpegdec" instead
>>> of "vaapijpegdec". Both streams also work without tee: Is this a known
>>> issue with VAAPI... or have I missed something!
>>
>> Have you thought of adding vaapipostproc right after the decoder ?
>
> I already tried that! It doesn't help.

FYI, I updated GStreamer from 1.12.2 to 1.14.1 and now it works with
"vaapisink" instead of "kmssink". "vaapisink" needs X11. It never worked
for me with DRM, even if "gst-inspect-1.0" is listing the option.

Thanks,

Wolfgang.
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[Victor Jaquez]

On Fri, 15 Jun 2018 at 14:43, Wolfgang Grandegger wrote:

> FYI, I updated GStreamer from 1.12.2 to 1.14.1 and now it works with
> "vaapisink" instead of "kmssink". "vaapisink" needs X11. It never worked
> for me with DRM, even if "gst-inspect-1.0" is listing the option.

vaapisink drm is not intended to draw something in screen. it is for
headless use-cases.
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