scottchicken
14th June 2003, 08:38
Hi all,
I've been using VirtualDub to fix VBR mp3 audio in AVI files before converting them to SVCD with the AVI2SVCD component of DVD2SVCD.
Have been doing it by doing a direct stream copy of video, and doing audio->full processing mode, audio->compression->no compression PCM. Of couse after removing any bad frames if they exist, using the vdub-vbr-mp3-freeze mod first, and direct stream copy of both video and audio.
This has worked perfect for the last year or so, nothing but praise for the authors of vdub and the vbrmp3freeze mod, and dvd2svcd.
But in the last week something has happened to cause my AVIs saved with WAV audio to be out of sync with the video. I cannot figure out for the life of me what is different as I am doing everything the same. Even the old vdub versions I have do it, and vdubmod. Downloaded a new copy and ran it fresh from a different location, still the same.
What steps should I take to try and track down the cause?
Any suggestions would be appreciated.
I have some examples of what is working and what isn't:
Example1 - The Source file with VBR audio:
(Audio is in sync, but cannot be converted to SVCD)
http://blah.scottchicken.com/x1.source-vbr.jpg
Example1 - After saving with no compression, no conversion:
(Audio is out of sync)
http://blah.scottchicken.com/x1.48wav-sync.jpg
Example1 - After saving with no compression, conversion to 44.1hz:
(Audio is out of sync)
http://blah.scottchicken.com/x1.441wav-sync.jpg
Example2 - The Source file with VBR audio:
(Audio is in sync, but cannot be converted to SVCD)
http://blah.scottchicken.com/x2.source-vbr.jpg
Example2 - After saving with no compression, conversion to 44.1hz:
(Audio is in sync!)
http://blah.scottchicken.com/x2.wav-ok.jpg
Example3 - The Source file with CBR audio:
(Audio is in sync!)
http://blah.scottchicken.com/x3.cbr-ok.jpg
Now, why is example1 out of sync????????
I've been using VirtualDub to fix VBR mp3 audio in AVI files before converting them to SVCD with the AVI2SVCD component of DVD2SVCD.
Have been doing it by doing a direct stream copy of video, and doing audio->full processing mode, audio->compression->no compression PCM. Of couse after removing any bad frames if they exist, using the vdub-vbr-mp3-freeze mod first, and direct stream copy of both video and audio.
This has worked perfect for the last year or so, nothing but praise for the authors of vdub and the vbrmp3freeze mod, and dvd2svcd.
But in the last week something has happened to cause my AVIs saved with WAV audio to be out of sync with the video. I cannot figure out for the life of me what is different as I am doing everything the same. Even the old vdub versions I have do it, and vdubmod. Downloaded a new copy and ran it fresh from a different location, still the same.
What steps should I take to try and track down the cause?
Any suggestions would be appreciated.
I have some examples of what is working and what isn't:
Example1 - The Source file with VBR audio:
(Audio is in sync, but cannot be converted to SVCD)
http://blah.scottchicken.com/x1.source-vbr.jpg
Example1 - After saving with no compression, no conversion:
(Audio is out of sync)
http://blah.scottchicken.com/x1.48wav-sync.jpg
Example1 - After saving with no compression, conversion to 44.1hz:
(Audio is out of sync)
http://blah.scottchicken.com/x1.441wav-sync.jpg
Example2 - The Source file with VBR audio:
(Audio is in sync, but cannot be converted to SVCD)
http://blah.scottchicken.com/x2.source-vbr.jpg
Example2 - After saving with no compression, conversion to 44.1hz:
(Audio is in sync!)
http://blah.scottchicken.com/x2.wav-ok.jpg
Example3 - The Source file with CBR audio:
(Audio is in sync!)
http://blah.scottchicken.com/x3.cbr-ok.jpg
Now, why is example1 out of sync????????