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#94 avi audio desyncs badly
When spitting out an avi of a gba game the audio
always desyncs at some point after fifty seconds in.
I've tried adjusting everything possible and even
outputting the audio separately and putting that in the
avi instead, the logged .wav doesn't match the .avi
either.
I don't know what I can suggest that might make it
better, but I can say that loading the avi into
virtualdubmod and...
. filter, resize, 480x320, lanczos3
. filter, resize, 320x214, accurate bilinear, letterbox to
320x240
...makes the produced clip look insanely good with
lossless codecs, if anyone else wants to give it a shot.
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Okay, I got it to work. Just had to alter the framerate to
59.997 or whatever the hell it ended up being and it works.
You guys might want to add a line about this in the .txt file
so other people don't feel as stupid as i do right now. =P
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user_id=335241
Can you be more clear on what exactly you changed? I can
alter the framerate of the produced AVI in my code, but I
need to know exactly what value you used.
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user_id=989244
I just made 3 quick avi's and checked them with
VirtualDubMod.
The "Change framerate so audio and video durations match"
is the option that I'm using. Unfortunately, each avi has a
different value!
59.735 with microsoft video 1
59.666 with huffyuv
59.669 with huffyuv again
People will most likely edit the produced avi's anyway so just
noting this phenomenon and how to correct it in the
documentation would be more than enough for me.
Hmm. 59.627 and 59.675 after setting the throttle to 100%,
if that makes a difference or not.
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Ok, try the version at
http://vba.sourceforge.net/vba-avi.zip and let me know if it
is any better.
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I tried vba-avi.zip.
Instead of 60 it says the framerate is 59.737 but the option
to change it so the audio and video match is still there, and it
says 59.695.
Give me a few minutes to free up a gig and I'll try it with a
longer movie.
Also, not a complaint but the 1:28 speedrun of Metroid I just
ran now desyncs. It will say 1.7.1 on Zophar so this isn't a
bug.
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Made a four and a half minute one this time, and for the first
time yet... same numbers!
59.737 as it came out of the emulator
59.695 for the audio to sync up
Still currently desyncs but it looks like you're narrowing in on
the problem. =)
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Please download again and let me know. It is now producing
the AVI with the framerate set to 59.695.
By the way, what sound frequency do you have set?
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Yes this time the produced fps is 59.695 but to make the
audio sync VirtualDubMod suggests 59.667, which really was
so close that it looked fine four minutes in.
Almost always 22khz but 44 once or twice.
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user_id=1074489
you mean avi as in those new video roms right yeah for some
reason it runs great at 99% when its goes above a hundred
percent the sound gets really choppy for no reason and it
happens about every minute to two minutes