[Scummvm-tracker] [ScummVM :: Bugs] #15184: VIDEO: Indeo 3 playback is very slow

[ScummVM :: Bugs]

#15184: VIDEO: Indeo 3 playback is very slow
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Reporter:  ccawley2011  |      Owner:  (none)
    Type:  defect       |     Status:  new
Priority:  normal       |  Component:  Video
 Version:               |   Keywords:  performance
    Game:               |
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 When playing Indeo 3 videos on the DS, the frame rate is extremely low and
 falls behind the audio track.

 When I last investigated, there were two main culprits:
 - The YUV411 conversion performs bilinear interpolation, which is slower
 than it is without filtering
 - The playback code in the BBVS engine performs unnecessary extra copies
 - Many engines will always delay for 10 milliseconds without taking the
 time taken to decode the last frame into account.
 [https://github.com/scummvm/scummvm/pull/5740 PR #5740] has a proof of
 concept solution for this.

 This was observed with the Beavis and Butthead in Virtual Stupidity demo.
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Ticket URL: <https://bugs.scummvm.org/ticket/15184>
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