drop in picture quality by using nero

[jirrah]

I experimented by copying a vcd movie (.dat file) on my hard drive and then used nero to burn it in vcd format again. Nero did encoded it again..
Didn't do anything else.

I noticed drop in picture quality, audio to me was Ok!!

Any suggestion to keep the video of same quality as original.

[WeedVender]

Well unless its a lossless compression then your going to get lowered image qualitity. MPEG2 is lossy and therefor everytime you re-encode u lost quality. To begin with, Nero doesnt have a good encoder.

Look in the guides section for a tutorial on how to create a VCD from a DAT file...

[Vejita-sama]

Why are you doing this??? If you've already got the VCD authored and burnt and want to make another copy of it just copy it like you would any CD/CDR.

There's no need to copy the dat file and re-encode/re-author the VCD. Also even thou the DAT file is playable by WMP as a MPEG1 file it really isn't. You should use a program (eg. VCDEasy, VCDGear, etc) to convert the DAT file back to a MPEG1 file prior to playing with it.

[jirrah]

so what will be the best way or program to burn dat back to cd without loose quality.

i know i can copy, but i want to do this, ( cos i may sneek my own video file with main movie )

soooo plzzzz help