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Activity Forums Adobe After Effects HD 720p footage into after effects changes brightness

  • HD 720p footage into after effects changes brightness

    Posted by Tenstories on October 26, 2006 at 12:14 am

    i have HD 720p footage in several clips, that when I import into After Effects 6.5, the brighness seems to go way up. I pulled the clip to create a comp and have been using that. It created its own comp with settings width 1280 height 720 frame rate 23.976. Looking at the comp with the clip in it against the original clip on its own within AE there is a drastic brightness difference. Thinking this was a quicktime vs. AE viewing issue, i rendered the clip out at HD 720p60 and did a side by side in QT with the original clip and the After Effects rendered clip. This difference was still there. Anybody have suggestions? Dual 2.0 Mac AE 6.5 QT 7.1.2

    r craghead

    Brian Mulligan replied 19 years, 6 months ago 3 Members · 4 Replies
  • 4 Replies
  • Straight A

    October 26, 2006 at 5:28 am

    What compressor are you using on your original clip ?

  • Tenstories

    October 26, 2006 at 4:11 pm

    in theory, no compression was used on the original footage. It was shot on the panasonic p2 camera at 720p and brought FCP native. Then the clips were exported native to quicktimes. then brought to me. The codec of the actual quicktimes are DVC HD 720p60. But at a frame rate of 23.976. thanks.

    r craghead

  • Tenstories

    October 27, 2006 at 4:34 am

    i checked with an older version AE 5.5 and the problem still exists. Wgats really weird is that when i look at it in half quality the brightness goes back to normal. Can anybody help?

    r craghead

  • Brian Mulligan

    October 27, 2006 at 3:32 pm

    Perhaps this might be some information.

    Here is a link which may help explain…

    https://www.hdforindies.com/2006/10/more-final-cut-pro-color-oddness.html#links

    QuickTime Movies Issue
    When importing a QuickTime movie created with Shake into Final Cut Pro, users may notice a difference in the displayed gamma of the image. This is because Final Cut Pro automatically lowers the gamma of sequences playing in the Canvas on your computer’s display. The gamma of QuickTime images remains untouched when the sequence is output to video or rendered as a QuickTime movie.

    What causes this?
    Final Cut Pro assumes that QuickTime movies for codecs that support the YUV color space (including DV, DVCPRO 50, and the 8- and 10-bit Uncompressed 4:2:2 codecs) are created with a gamma of 2.2. This is generally true of movies captured from both NTSC and PAL sources. When you eventually output the sequence to video, or render it as a QuickTime movie, the gamma of the output is identical to that of the original, unless you’ve added color correction filters of your own.

    However, during playback on your computer’s monitor, Final Cut Pro automatically lowers the gamma of a sequence playing in the Canvas to 1.8 for display purposes. This is to approximate the way it will look when displayed on a broadcast monitor. This onscreen compensation does not change the actual gamma of the clips in your sequence.

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