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  • Intensity pro uncompressed capture and not matching colors

    Posted by Thomas Calzone on January 6, 2014 at 8:26 pm

    Hello,

    I own a blackmagic intensity pro capture card. I’m still learning and was wondering if one could achieve a perfect uncompressed capture of some input.

    This is my setup: Computer1 Nvidia output -> Computer2 Intensity pro hdmi input.
    To the naked eye it looks uncompressed but when analysing pixels closely there is some noise or color differences.

    Same results with both 720p@60 and 1080p@30. I tried with blackmagic media express and VirtualDub 1.10.4
    I can spot those differences in a video captured with bm media express, and in the preview window of virtualdub (not even recording)

    VirtualDub settings: Video -> Compression… -> “(No recompression: HDYC)”
    Video -> Set custom format… -> Custom size 1920×1080 / Data format: HDYC YUV 4:2:2 interleaved (Rec. 701) (only working data format)

    Does anyone have any idea about some options or else that would cause this?

    Tom

    Thomas Calzone replied 12 years, 8 months ago 1 Member · 1 Reply
  • 1 Reply
  • Thomas Calzone

    January 7, 2014 at 2:56 pm

    It’s actually the 4:2:2 subsampling that bothers me. Is there any card that will capture hdmi raw rgb input with 1080p@60 ? (4:4:4 I guess?).

    I need at least yuv 4:4:4 for preview mode in virtualdub, not necessary in file capture mode.

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