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Portion Of Frames of Video Renders Coming Out Completely Black

mechengineer97mechengineer97 Posts: 116
edited January 2019 in Technical Help (nuts n bolts)

          This has been driving me crazy.  Each time I render a video, there's like a 20 to 30 percent chance that part of the video will come out completely black.  Latest episode of this had the first 1sec coming out completely black and the last 2 seconds rendering fine.  Then when I render it again without changing a thing, it came out fine.  

See attached thumbnails below.

Sometimes it's reversed with the first part coming fine follwed by the remaining video rendering black.  Anyone else have this happening?

Post edited by mechengineer97 on

Comments

  • Richard HaseltineRichard Haseltine Posts: 108,063

    What happens if you render to an image sequence instead?

  • mechengineer97mechengineer97 Posts: 116

    Thanks for the reply.  Never used image sequence, is there an advantage using a sequence instead of movie mode?

  • Richard HaseltineRichard Haseltine Posts: 108,063

    Several - you get an alpha channel, which can be useful if you are combining with other elements; you can tweak and rrender a few frames if there's a problem, instead of having to rerender the whole sequence; it allows more choice of output format, depending on what your video editing software supports; it allows the addition of a soundtrack; it provides crash-protection - just pick up from the last good frame.

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