Posted: 6/8/2005 3:48 AM
Post subject: How to dump an AVI that has audio synced to the video?
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nesrocks
He/Him
Player (246)
Joined: 5/1/2004
Posts: 4096
Location: Rio, Brazil
So, i chose to dump the avi playing at 100% speed. I used techsmith codec, since the hufyuv ffdshow codec simply closed fceu upon movie start. But the audio was always playing at diferent speed, and soon it would be several seconds off. So i recorded again but i tried changing emu speed. The audio was recorded in real time while for the video dumped the frames 1 by 1 that means, if i sped up the video it would record all frames, but the audio would be short. Does that mean if my pc cant dump the avi fast enough the audio will be out of pace? I just couldnt get it to dump a single synced avi file.... i also tried encoding directly to xvid 1 pass and it same thing audio never got synced after some time.
aka Nesrocks http://www.youtube.com/user/UoBtExFODA https://nesrocks.com https://twitter.com/bitinkstudios
Posted: 6/10/2005 12:31 PM
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nesrocks
He/Him
Player (246)
Joined: 5/1/2004
Posts: 4096
Location: Rio, Brazil
Phil told me, let the video dump from fceu with the audio desynced. Then on virtuadub, choose - "video" - "frame rate" and mark the option "change so video and audio durations match". and save the avi using same lossless compression. Thanks Phil, that fixed it
aka Nesrocks http://www.youtube.com/user/UoBtExFODA https://nesrocks.com https://twitter.com/bitinkstudios
Posted: 6/10/2005 2:43 PM
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Phil
Active player (411)
Joined: 3/16/2004
Posts: 2623
Location: America, Québec
Well, use direct stream copy.
Posted: 7/12/2005 7:59 AM
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LocalH
Joined: 10/3/2004
Posts: 138
I've run into this same problem too. I'm using an SMB2 run as my test footage for developing my method for making "perfect" DVD-compliant video with Avisynth. Even watching the raw AVI recorded from FCEU, as I get further through the video I notice a loss of sync. I noticed in another thread that Bisqwit posted the exact FCEU framerates, and I'm wondering if that's it. The skew doesn't seem to be that bad to me, so I'm going to try to correct it with Avisynth. Edit: Yes, it's easily fixable with Avisynth. Merely stick this line in your script: 
AssumeFPS(last,1008307711,16777216,false)
Replace 1008307711 with 838977920 for PAL output, as revealed by Bisqwit.
Sonic Retro
Posted: 2/19/2006 6:07 PM
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jdurg
Joined: 2/19/2006
Posts: 40
Location: Oakdale, CT
FODA wrote:
Phil told me, let the video dump from fceu with the audio desynced. Then on virtuadub, choose - "video" - "frame rate" and mark the option "change so video and audio durations match". and save the avi using same lossless compression. Thanks Phil, that fixed it
THANK YOU!!!! All of the movies I've been recording out of FCE Ultra 98.12 have been aurally desynching during the movie playback. It was driving me nuts trying to figure out how to fix it. Then I read your post and everything is working just fine now. Thank you so much. :-)