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Cantello
31st January 2002, 23:07
I have an MPEG here that shows some heavy tearing and de-synched sound. I wanted to demultiplex it to multiplex it again, this time correctly.
TMPEGEnc only demuxes a small part of it and bbdmux shows 'invalid bits' in the MPEG and also does not demux all of it.

Is there any way to extract or correct the stream and multiplex it afterwards to have an MPEG of good quality?

Any hints appreciated.

smiller667
31st January 2002, 23:20
You might try vcdgear (from vcdgear.com) - sometimes it can fix minor problems.
There are a few recipes for fixing mpeg1 streams on vcdhelp.com as well ...
If nothing helps, you will have to use tmpgenc to reencode the mpeg (and fix the other issues later).

Cantello
1st February 2002, 00:05
Thanks for the VCDGear link!
Didn't work, though, it finds some errors, then cuts the whole thing into four smaller files (presumably at positions with erroneous data), of which the last three are not readable (they play fine in media player but not demuxable).

I would encode it again but it's a home-made video CD of which the source material is no longer available.

smiller667
1st February 2002, 01:03
Using the (damaged) mpeg1 as a source for a tmpgenc encode might work.
Before doing so, try this link: http://www.vcdhelp.com/faq.htm#repairmpg
Good luck.