[Scummvm-tracker] [ScummVM :: Bugs] #9591: SCUMM: Zak McKracken (FM-Towns) - Intro animation runs faster than intro music

[ScummVM :: Bugs]

#9591: SCUMM: Zak McKracken (FM-Towns) - Intro animation runs faster than intro
music
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Reporter:  Nukkus                |       Owner:  (none)
    Type:  defect                |      Status:  new
Priority:  normal                |   Component:  Engine: SCUMM
 Version:                        |  Resolution:
Keywords:  FM Towns, soundtrack  |        Game:  Zak McKracken
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Comment (by LukasThyWalls):

 Hello.

 This is something that bothered me from long time ago, because it's very
 noticeable but at the same time is hard to make it work well, because like
 Raziel said, it looks like in the original system the intro music is
 matched to how it runs the intro itself and that's is hard to match in
 ScummVM.

 The first time i tried DREAMM, what also supports this version, i was
 thinking it should play better the intro but it doesn't. It's not accurate
 enough for that and it does the same as ScummVM. That leads me to play it
 in a FM-Towns emulator (Tsugaru), but any option i tried to speed down the
 emulation doesn't match the intro itself.

 For sure in an original hardware it plays differently. This youtube video
 footage of a real FM-Towns shows the intro played perfectly synced
 https://www.youtube.com/watch?v=Cq0-ttP7lW0 . Like Raziel said, the speed
 and, for sure, the transitions are different, they take more time than any
 emulator can do.

 I did something different instead: If there is no information of how to
 play intro with the music synced, I tried to look how to change the intro
 to fit the music better. With that i did this
 https://www.youtube.com/watch?v=u1oMv_n1JM4
 The only things are:
 - The video is played at 83,33% of original speed in ScummVM 2.5.1, so
 instead of the recorded 30 fps, it is at 25 fps.
 - The track begins 28 frames after the Zak McKracken logo appears. With
 that, the music ends perfectly in the intro end. The original recorded
 intro are 30 fps, but with the speed changed to 25 fps, it is 1.1 seconds
 after the Zak logo.

 With those things, the music almost match parts of the intro (when it
 enters in the "cloud/dream part", when objects appear in screen, when the
 floating hat and glasses appear...) but others not as perfectly (the zoom
 to the Mars map).

 Without a better video or information to look for time sync, and without
 adding according transition time (original loading times) to the intro, it
 can't be done anything better I think.

 Thanks!
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Ticket URL: <https://bugs.scummvm.org/ticket/9591#comment:5>
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