Deinterlace plugin working backwards ?

[Tony Houghton]

It seems more conventional to refer to the total frame height rather than
the height of each field, so have you tried using "height=576" instead?

On Wed, 28 Oct 2020 at 11:00, Rob Heig <robhhh6 at gmail.com> wrote:

> Hello,
> I'm trying to deinterlace an interlaced raw video, but despite having
> spent 2 days on this I am still stuck. The interesting thing is that, by
> looking at the output of gst-launch, I see weird results:
>
> gst-launch-1.0 -v filesrc location=vvvv.raw ! videoparse width=768
> height=288 format=4 framerate=50/1 interlaced=true ! videoconvert !
> deinterlace ! autovideosink
>
> Setting pipeline to PAUSED ...
> Pipeline is PREROLLING ...
> /GstPipeline:pipeline0/GstVideoParse:videoparse0/GstRawVideoParse:inner_rawvideoparse.GstPad:src:
> caps = video/x-raw, format=(string)YUY2, width=(int)768, height=(int)288,
> interlace-mode=(string)interleaved, pixel-aspect-ratio=(fraction)1/1,
> chroma-site=(string)jpeg, colorimetry=(string)bt601,
> framerate=(fraction)50/1
> /GstPipeline:pipeline0/GstVideoParse:videoparse0.GstGhostPad:src: caps =
> video/x-raw, format=(string)YUY2, width=(int)768, height=(int)288,
> interlace-mode=(string)interleaved, pixel-aspect-ratio=(fraction)1/1,
> chroma-site=(string)jpeg, colorimetry=(string)bt601,
> framerate=(fraction)50/1
> /GstPipeline:pipeline0/GstVideoConvert:videoconvert0.GstPad:src: caps =
> video/x-raw, width=(int)768, height=(int)288,
> interlace-mode=(string)interleaved, pixel-aspect-ratio=(fraction)1/1,
> framerate=(fraction)50/1, format=(string)YV12
> /GstPipeline:pipeline0/GstDeinterlace:deinterlace0.GstPad:src: caps =
> video/x-raw, width=(int)768, height=(int)288,
> interlace-mode=(string)progressive, pixel-aspect-ratio=(fraction)1/1,
> framerate=(fraction)100/1, format=(string)YV12
> /GstPipeline:pipeline0/GstAutoVideoSink:autovideosink0.GstGhostPad:sink.GstProxyPad:proxypad2:
> caps = video/x-raw, width=(int)768, height=(int)288,
> interlace-mode=(string)progressive, pixel-aspect-ratio=(fraction)1/1,
> framerate=(fraction)100/1, format=(string)YV12
> /GstPipeline:pipeline0/GstAutoVideoSink:autovideosink0/GstXvImageSink:autovideosink0-actual-sink-xvimage.GstPad:sink:
> caps = video/x-raw, width=(int)768, height=(int)288,
> interlace-mode=(string)progressive, pixel-aspect-ratio=(fraction)1/1,
> framerate=(fraction)100/1, format=(string)YV12
> /GstPipeline:pipeline0/GstAutoVideoSink:autovideosink0.GstGhostPad:sink:
> caps = video/x-raw, width=(int)768, height=(int)288,
> interlace-mode=(string)progressive, pixel-aspect-ratio=(fraction)1/1,
> framerate=(fraction)100/1, format=(string)YV12
> /GstPipeline:pipeline0/GstDeinterlace:deinterlace0.GstPad:sink: caps =
> video/x-raw, width=(int)768, height=(int)288,
> interlace-mode=(string)interleaved, pixel-aspect-ratio=(fraction)1/1,
> framerate=(fraction)50/1, format=(string)YV12
> /GstPipeline:pipeline0/GstVideoConvert:videoconvert0.GstPad:sink: caps =
> video/x-raw, format=(string)YUY2, width=(int)768, height=(int)288,
> interlace-mode=(string)interleaved, pixel-aspect-ratio=(fraction)1/1,
> chroma-site=(string)jpeg, colorimetry=(string)bt601,
> framerate=(fraction)50/1
> /GstPipeline:pipeline0/GstVideoParse:videoparse0.GstGhostPad:src.GstProxyPad:proxypad1:
> caps = video/x-raw, format=(string)YUY2, width=(int)768, height=(int)288,
> interlace-mode=(string)interleaved, pixel-aspect-ratio=(fraction)1/1,
> chroma-site=(string)jpeg, colorimetry=(string)bt601,
> framerate=(fraction)50/1
> Pipeline is PREROLLED ...
> Setting pipeline to PLAYING ...
> New clock: GstSystemClock
> ERROR: from element
> /GstPipeline:pipeline0/GstAutoVideoSink:autovideosink0/GstXvImageSink:autovideosink0-actual-sink-xvimage:
> Output window was closed
> Additional debug info:
> xvimagesink.c(555): gst_xv_image_sink_handle_xevents ():
> /GstPipeline:pipeline0/GstAutoVideoSink:autovideosink0/GstXvImageSink:autovideosink0-actual-sink-xvimage
> Execution ended after 0:00:02.956028008
> Setting pipeline to PAUSED ...
> Setting pipeline to READY ...
> Setting pipeline to NULL ...
> Freeing pipeline ...
>
> I would naively expect the deinterlace plugin to take a 50 Hz, 720x288
> interlaced video and give as output a 25 Hz, 720x576 one.
> Instead, the resolution stays the same, while the frame rate doubles....
> ????
> I have tested this on gstreamer 1.45 and gstreamer 1.6.
> Am I missing anything?
> Thanks in advance for all suggestions!
> Best,
> Rob
>
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>


-- 
TH
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