videio audio sync blues. modyfying FPS nor skewing works help!!!!

[PunkMaister]

I recently bought a California Wildcats video online and sadly it has video audio sync problems I've tried to fix it with that i've been unable to fix using the true and tried modification of FPS or skewing. If I use the first it fixes the sync problem at the begining of the video but causes the video to fall out of sync latter on and I skew it to try to fix the psrt where is out of sync latter on, it makes the rest o the video from the beginong on to that point fall out of sync, is like trying to fit a bed sheet into a bed that is far larger so you get one end but one cannot quite get the other.


Any suggestions would be appreciated I use YAAB and VirtualDub to fix the audio problems...

[poisondeathray]

haha I just googled "California Wildcats" and it wasn't what I expected

But can you contact the distributor since you purchased it? (maybe it was bad download or something?)

If you want to sync it , you have probably have to do it manually in an editor (ie. sync up sections manually). It's very tedious

[poisondeathray]

Have you tried another media player? (maybe it's a playback issue) ? e.g. mpchc, smplayer, vlc

What are your computer specs and what are the video specs ? (use mediainfo if you don't know) - is it a CPU speed /computer specs issue?

[jagabo]

You might be able to fix it by adjusting the skew for the beginning then the length of the audio or video to match at the end. If that doesn't work you'll have to edit it in parts as poisondeathray suggested.

[PunkMaister]

haha I just googled "California Wildcats" and it wasn't what I expected

But can you contact the distributor since you purchased it? (maybe it was bad download or something?)

If you want to sync it , you have probably have to do it manually in an editor (ie. sync up sections manually). It's very tedious

What editor and how? As i said I have virtualdub and YAAB. And what do you mean sections? I'm guessing you mean having to separate tthe sound track completely take it apart into sections try to make it all work and merge it with the video again and if that's the case yes that would be very tedious indeed.

i guess I'm gonna have to live with it...

[Budman1]

Under the off chance that the video is not actually created with a totally messed up track, and since you already have Virtualdub installed, you might try saving the audio as wav file from the "File --> Save Wav". Then under "Audio --> Audio from other file" select the wav file. Then just be sure to check under "Video --> Frame Rate" check the "Change so video and audio durations match". If that doesn't work then it's probably skewed differently at different places.

Be sure to check with another player as was suggested earlier since some codecs can definitely mess up the sync. I haven't known the later FFDshow codecs to fail but I usually prefer the LAV codecs?

[PunkMaister]

Under the off chance that the video is not actually created with a totally messed up track, and since you already have Virtualdub installed, you might try saving the audio as wav file from the "File --> Save Wav". Then under "Audio --> Audio from other file" select the wav file. Then just be sure to check under "Video --> Frame Rate" check the "Change so video and audio durations match". If that doesn't work then it's probably skewed differently at different places.

Be sure to check with another player as was suggested earlier since some codecs can definitely mess up the sync. I haven't known the later FFDshow codecs to fail but I usually prefer the LAV codecs?

I use VLC player so the player being the problem is very doubtful and Whoa! You might be sadly right about the track being messed up from the getgo. I did saved an audio WAV file copy of the soundtrack with VirtualDub as you suggested it and Audacity was not able to read it at all and I've saved tracks separately before in full or in part using the same codecs before and Audacity never had any problems except with this one track.

[sambat]

Note that depending on the method, saving the audio from VirtualDub can create two different size files.
File > Save WAV...is one way.
The other is Audio > Full processing mode > Compression > No compression PCM then File > Save WAV..
I'm not sure what the exact difference is, but in the case of an mp3 audio track, the 'wav' file in one case still id's as mp3, while the other (much larger file) id's as PCM.

[jagabo]

Note that depending on the method, saving the audio from VirtualDub can create two different size files.
File > Save WAV...is one way.
The other is Audio > Full processing mode > Compression > No compression PCM then File > Save WAV..
I'm not sure what the exact difference is

The difference is whether or not the WAV file contains compress or uncompressed audio. WAV is just like AVI (and most other containers) -- it can contain uncompressed audio or compressed audio. Many programs can't deal with compressed audio in WAV files.

The OP may be able to open the WAV file with audacity by adding the ffmpeg source plugin. That will give Audacity the ability to open compressed audio streams in WAV files.

[Budman1]

The information Sambat and Jagabo provided is certainly interesting to me! I was always under the understanding that Wav was a losseless, PCM (or more correctly LPCM) format. I guess I didn't read Wiki clearly enough or else it's been so long ago I forgot the exact wording:

Though a WAV file can hold compressed audio,
the most common WAV format contains uncompressed audio in the linear
pulse code modulation (LPCM) format.

I tried Virtualdub both with compression and without, and sure enough, I obtained two files labeled xxx.wav with different file lengths. Using HxD I clearly saw that the one uses Lame MP3 codec formatting. I guess saving as WAV doesn't always mean saving as WAV with Virtualdub! LOL

I really appreciate your setting me straight on this and will surely watch it in the future.
Thank you Jagabo and Sambat.