v4l2src appends wrong frame height caps

[Nicolas Dufresne]

Le dim. 18 oct. 2020 19 h 45, zakhar.khadanovich <
zakhar.khadanovich at sorama.eu> a écrit :

> I have /dev/video1 mipi csi device connected to Jetson Nano. I have
> configured it to have 2 modes with frame size 64x9600 and 64x4096. Frame
> size is stranges because it's actually not video data and I use toshiba
> tc358746 to create mipi frames. And I have a problem with making gstreamer
> to use second mode.
>
> I can see my devices supports 2 frame sizes:
> root at jetson-nano-emmc:~# v4l2-ctl --list-formats-ext --device=/dev/video1
> ioctl: VIDIOC_ENUM_FMT
>         Type: Video Cap
>
>         [0]: 'AR24' (32-bit BGRA 8-8-8-8)
>                 Size: Discrete 64x9600
>                         Interval: Discrete 0.040s (25.000 fps)
>                 Size: Discrete 64x4096
>                         Interval: Discrete 0.040s (25.000 fps)
>
> If I use v4l2-ctl it works fine:
> v4l2-ctl --verbose --device /dev/video1 --stream-mmap --stream-to=/dev/null
> --set-fmt-video=width=64,height=9600
> VIDIOC_QUERYCAP: ok
> VIDIOC_G_FMT: ok
> VIDIOC_S_FMT: ok
> Format Video Capture:
>         Width/Height      : 64/9600
>         Pixel Format      : 'AR24' (32-bit BGRA 8-8-8-8)
>         Field             : None
>         Bytes per Line    : 256
>         Size Image        : 2457600
>         Colorspace        : sRGB
>         Transfer Function : Default (maps to sRGB)
>         YCbCr/HSV Encoding: Default (maps to ITU-R 601)
>         Quantization      : Default (maps to Full Range)
>         Flags             :
>                 VIDIOC_REQBUFS returned 0 (Success)
>                 VIDIOC_QUERYBUF returned 0 (Success)
>                 VIDIOC_QUERYBUF returned 0 (Success)
>                 VIDIOC_QUERYBUF returned 0 (Success)
>                 VIDIOC_QUERYBUF returned 0 (Success)
>                 VIDIOC_QBUF returned 0 (Success)
>                 VIDIOC_QBUF returned 0 (Success)
>                 VIDIOC_QBUF returned 0 (Success)
>                 VIDIOC_QBUF returned 0 (Success)
>                 VIDIOC_STREAMON returned 0 (Success)
>
> But if I use gstreamer it anyway uses 64x4096. It shows caps as
> width=(int)64, heigh=(int)9600, height=(int)4096. So it appends 4096 and
> overwrites whatever I specified as height. Why it appends height=(int)4096
> to my caps?
> gst-launch-1.0 -v v4l2src device=/dev/video1 !
> video/x-raw,width=64,heigh=9600 ! videoconvert ! appsink name=mysink
> caps=video/x-raw,format=ABGR,width=64,heigh=9600
> Pipeline is live and does not need PREROLL ...
> Setting pipeline to PLAYING ...
> New clock: GstSystemClock
> /GstPipeline:pipeline0/GstV4l2Src:v4l2src0.GstPad:src: caps = video/x-raw,
> width=(int)64, heigh=(int)9600, height=(int)4096, framerate=(fraction)25/1,
>

Correct heigh -> height in your caps filter, and it should work as expected
;-)

format=(string)BGRA, colorimetry=(string)sRGB,
> interlace-mode=(string)progressive
> /GstPipeline:pipeline0/GstCapsFilter:capsfilter0.GstPad:src: caps =
> video/x-raw, width=(int)64, heigh=(int)9600, height=(int)4096,
> framerate=(fraction)25/1, format=(string)BGRA, colorimetry=(string)sRGB,
> interlace-mode=(string)progressive
> /GstPipeline:pipeline0/GstVideoConvert:videoconvert0.GstPad:src: caps =
> video/x-raw, width=(int)64, heigh=(int)9600, height=(int)4096,
> framerate=(fraction)25/1, interlace-mode=(string)progressive,
> format=(string)ABGR
> /GstPipeline:pipeline0/GstAppSink:mysink.GstPad:sink: caps = video/x-raw,
> width=(int)64, heigh=(int)9600, height=(int)4096, framerate=(fraction)25/1,
> interlace-mode=(string)progressive, format=(string)ABGR
> /GstPipeline:pipeline0/GstVideoConvert:videoconvert0.GstPad:sink: caps =
> video/x-raw, width=(int)64, heigh=(int)9600, height=(int)4096,
> framerate=(fraction)25/1, format=(string)BGRA, colorimetry=(string)sRGB,
> interlace-mode=(string)progressive
> /GstPipeline:pipeline0/GstCapsFilter:capsfilter0.GstPad:sink: caps =
> video/x-raw, width=(int)64, heigh=(int)9600, height=(int)4096,
> framerate=(fraction)25/1, format=(string)BGRA, colorimetry=(string)sRGB,
> interlace-mode=(string)progressive
>
>
>
>
> --
> Sent from: http://gstreamer-devel.966125.n4.nabble.com/
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