Problem playing raw (gray8) video

[John Stowers]

Hi All,

I can't get gstvideoparse to recognize my raw video format. The following works

gst-launch-0.10 videotestsrc num-buffers=100 ! \
  video/x-raw-yuv,format=\(fourcc\)"I420",width=640,height=480 !
filesink location=video.yuv

cat ./video.yuv | gst-launch-0.10 fdsrc ! \
  videoparse format="i420" width=640 height=480 ! xvimagesink

But I do not have Y420, I have gray8 (aka Y800?). The following *does not work*

gst-launch-0.10 videotestsrc num-buffers=100 ! \
  video/x-raw-gray,width=640,height=480 ! filesink location=video.raw

cat ./video.raw | gst-launch-0.10 fdsrc ! \
  videoparse format="gray8" width=640 height=480 ! xvimagesink

It dies withSetting pipeline to PAUSED ...
Pipeline is PREROLLING ...
/GstPipeline:pipeline0/GstVideoParse:videoparse0.GstPad:src: caps =
video/x-raw-gray, bpp=(int)8, depth=(int)8, width=(int)640,
height=(int)480, framerate=(fraction)25/1,
pixel-aspect-ratio=(fraction)1/1
ERROR: from element /GstPipeline:pipeline0/GstFdSrc:fdsrc0: Internal
data flow error.
Additional debug info:
gstbasesrc.c(2625): gst_base_src_loop ():
/GstPipeline:pipeline0/GstFdSrc:fdsrc0:
streaming task paused, reason not-negotiated (-4)
ERROR: pipeline doesn't want to preroll.
Setting pipeline to NULL ...
/GstPipeline:pipeline0/GstVideoParse:videoparse0.GstPad:src: caps = NULL

Any ideas?

John
_______________________________________________
gstreamer-devel mailing list
[hidden email]
http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel

[Wim Taymans]

On 06/25/2012 04:13 PM, John Stowers wrote:

> Hi All,
>
> I can't get gstvideoparse to recognize my raw video format. The following works
>
> gst-launch-0.10 videotestsrc num-buffers=100 ! \
>    video/x-raw-yuv,format=\(fourcc\)"I420",width=640,height=480 !
> filesink location=video.yuv
>
> cat ./video.yuv | gst-launch-0.10 fdsrc ! \
>    videoparse format="i420" width=640 height=480 ! xvimagesink
>
> But I do not have Y420, I have gray8 (aka Y800?). The following *does not work*
>
> gst-launch-0.10 videotestsrc num-buffers=100 ! \
>    video/x-raw-gray,width=640,height=480 ! filesink location=video.raw
>
> cat ./video.raw | gst-launch-0.10 fdsrc ! \
>    videoparse format="gray8" width=640 height=480 ! xvimagesink

this won't work, xvimagesink doesn't accept gray8, use ffmpegcolorspace
before
xvimagesink to convert it.

Wim

>
> It dies withSetting pipeline to PAUSED ...
> Pipeline is PREROLLING ...
> /GstPipeline:pipeline0/GstVideoParse:videoparse0.GstPad:src: caps =
> video/x-raw-gray, bpp=(int)8, depth=(int)8, width=(int)640,
> height=(int)480, framerate=(fraction)25/1,
> pixel-aspect-ratio=(fraction)1/1
> ERROR: from element /GstPipeline:pipeline0/GstFdSrc:fdsrc0: Internal
> data flow error.
> Additional debug info:
> gstbasesrc.c(2625): gst_base_src_loop ():
> /GstPipeline:pipeline0/GstFdSrc:fdsrc0:
> streaming task paused, reason not-negotiated (-4)
> ERROR: pipeline doesn't want to preroll.
> Setting pipeline to NULL ...
> /GstPipeline:pipeline0/GstVideoParse:videoparse0.GstPad:src: caps = NULL
>
> Any ideas?
>
> John
> _______________________________________________
> gstreamer-devel mailing list
> [hidden email]
> http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel

_______________________________________________
gstreamer-devel mailing list
[hidden email]
http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel

[John Stowers]

>> cat ./video.raw | gst-launch-0.10 fdsrc ! \
>>   videoparse format="gray8" width=640 height=480 ! xvimagesink
>
>
> this won't work, xvimagesink doesn't accept gray8, use ffmpegcolorspace
> before
> xvimagesink to convert it.

That works thanks.

FWIW I wasted some time assuming it was because I hadn't or couldn't
set the bpp correctly, getting confused because despite their being a
bpp property here

http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gst-plugins-bad-plugins/html/gst-plugins-bad-plugins-videoparse.html

I was unable to set it.

Thanks for your help

John
_______________________________________________
gstreamer-devel mailing list
[hidden email]
http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel