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quality loss?
Name: msudallas Date: January 21, 2006 at 17:57:29 Pacific OS: xp pro CPU/Ram: 3200+/512
Comment:
If I use Nero to transfer VOB files to mpg, is there any quality loss? Also, If I then convert that mpg to DV-AVI and back to mpg is there any quality loss there?
Name: Bryco Date: January 22, 2006 at 02:12:03 Pacific
Reply:
How about giving a try and then letting all of us know the results?
Doing so will allow you to give something back to the forum board.
Be sure to use a good Subject so that others will find it easily in a search.
Regards, Bryan
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Response Number 2
Name: rhawk7938 Date: January 22, 2006 at 09:06:14 Pacific
Reply:
If you want to convert vob to mpg, all you need to do is rename the file type to mpg.
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Response Number 3
Name: msudallas Date: January 22, 2006 at 09:24:29 Pacific
Reply:
i have already done this, it seems so, but its hard to tell. I will try renaming the file, but how do i then combine VOBs and split them?
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Response Number 4
Name: max00 Date: January 22, 2006 at 21:34:04 Pacific
Reply:
Any time you convert from one format to another, there will be a little degradation. It's not always noticeable.
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Response Number 5
Name: Michael J (by mjdamato) Date: January 23, 2006 at 07:43:02 Pacific
Reply:
VOBs are already in MPEG format, so there should be no quality loss (uless the program you use tries to reencode at a lower bitrate). I've never renames one to mpg, however a VOB can contain mutiple or only partial vide streams. I suggest using a DVD re-authoring program to isolate any particular stream that you want. DVD Shrink is a freeware program that can do that. Then you can convert it to mpg, either by renaming it or some other means.
But, a VOB is usually restricted to 1GB in size, so if the stream you want is bigger than that you will need to merge the two mpgs afterwards.
As for converting to AVI then to mpg, there would almost definitely be quality loss. AVI is a lossless format, so you won't lose any quality converting an mpeg to avi, but when converting from avi to mpeg is where the quality loss will occur.
Michael J
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Response Number 6
Name: msudallas Date: January 23, 2006 at 11:00:41 Pacific
Reply:
thanks guys
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Response Number 7
Name: peterfnj Date: February 14, 2006 at 21:46:52 Pacific
Reply:
what about working on a project with many cuts, and than rendering it from avi to avi, so its easier to work with- than rendering to mpeg, will u lose on the avi to avi?
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Response Number 8
Name: Michael J (by mjdamato) Date: February 15, 2006 at 14:23:37 Pacific
Reply:
AVI is a lossless format, so there is no re-encoding. There should be no quality loss.
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