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Bands showing up in video

V.Faul
Intellectual 885 points

Other Parts Discussed in Thread: TVP5158

We are using the DM6467 and TVP5158 to capture video from three analog NTSC near-IR cameras at 33 frames per second. The DM6467 is using the TI JPEG encoder to encode the video frames. The customer is seeing video that contains eight uniform “bands” as shown in the attached picture. We have not seen these bands in our lab. Could it be that the frequency of the external lights are causing this? Is there a setting in the TVP5158 that can be changed to fix this?

Thanks for the help.

  • 0
    Mastermind 6115 points
    Hi V.Faul,

    I am looking into your issue and will get back to you.
    Thanks for your patience.
  • 0
    Mastermind 6115 points
    Hi V.Faul,

    Here are some suggestions which you can try out.

    This issue might be caused due to improper pixelization.
    Have you tried with different pixel configurations(lower one's)? If not then try.

    Also check I2C register at subaddress 5Dh (noise reduction control).
    Enable (NR_Color_Killer_En) by writing 1 to 0th bit of this register.

    Also check Auto Contrast mode at I2C subaddress 0Fh.
    Enable it by writing 00h to this register.