multiplexing quality question

[pcexpress-guy]

in general if I use a tool like TmpgEnc to "multiplex" a mpg, is there any lost of quality in the issue? (Is this thing transcoding my video? or is just putting it together for me?)

Thanks!!

[bottle-necked]

Just putting it together, no loss of quality.

[pcexpress-guy]

Is it clear when some quality lost issue will occure when using a so called editor type program?

It seems some editors do transcode on their own without notice. I'm I right about that?

also what free/tool editor here will just edit a file?

Thanks!

[mats.hogberg]

Depending on what you put into the word editing, almost all editing results in a reencode of the mpg. Some editors claim to just reencode the part where the edit has occured, buit I haven't tried it myself.
Simple cuts ought to be possible without reencoding at all, but that's about what you can get away with without reencoding at least some part.

/Mats

[pcexpress-guy]

If I just cut a video, it just gets recoded and not compressed/transcoded. indivual frames are left as-was before, just some get chop out and others get moved(encoded) to a new file.

I think this is the distinction, yes?

ahh... not sure.