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Linux/AM5728: Display issue with TVP5150

Todo Lucifer
Prodigy 80 points
Part Number: AM5728
Other Parts Discussed in Thread: TVP5150AM1, , TVP5150

Tool/software: Linux

Hi,

I am having AM5728 custom board with TVP5150AM1 connected to VIN1A port. While capturing video and displaying on HDMI i am getting a black strip on top of monitor.

I am using dmabuf test case to capture and display. How to remove that black strip?

BR,

TODO

  • 0
    TI__Mastermind 22946 points
    Is this issue seen only with dmabuftest live capture using TVP5150 and display? Has display been validated by itself by displaying some of the graphics drawn content by QT application. Is TVP5150 streaming interlace or progressive content? What's the capture resolution and display resolution?
  • 0 in reply to Manisha Agrawal
    TI__Mastermind 22946 points
    Hi, I am closing this thread for now in absence of any further response for about a month.
  • 0
    Prodigy 80 points

    Part Number: AM5728

    Tool/software: Linux

    Hi

    I have a custom board with AM5728, I am using tvp5150am1 video decoder to capture PAL video on VIN1A port.

    Sorry for opening new thread, but previous thread was locked.

    The standard resolution of PAL is 720x576 but i am getting 720x288.

    I am running this below mentioned pipeline to display over weston.

    gst-launch-1.0 v4l2src device=/dev/video1 io-mode=4 ! 'video/x-raw,format=(string)YUY2, width=(int)720, height=(int)288' ! vpe num-input-buffers=8 ! queue ! waylandsink use-drm=true

    In above pipeline if i mention height 288 then only it will run the pipeline, why it like that?

    Below i have attached the picture of running video, why i am getting a black strip on top of streaming?

    BR,

    TODO

  • 0 in reply to Todo Lucifer
    TI__Mastermind 22946 points

    Todo Lucifer said:
    In above pipeline if i mention height 288 then only it will run the pipeline, why it like that?

    That could be because the camera is capturing interlaced fields and not progressive frames. 

    Todo Lucifer said:
    why i am getting a black strip on top of streaming?

    I will recommend you to write the captured video in a file and check if the black strip is coming from display or camera itslef is streaming the content with black strip.

    Also, note that we do not support interlace capture and display on AM5728.