Convert DV-avi to *mpg without any lose of picture quality!?

[ccc_p]

Hi,all!

I use everytime the great CCE-encoder for all what concerning to the Video-Digital and in principle im happy with it,but with DV-avi not so good,though I tried to sett video bit rate to resolution 720x575 and 8000kbs. like by DVD,but with result Im not satisfy!

Therefore Im looking for some special CCE-settings or maybe some other
Software or I dont know what...,which will give me result so, that
DV-avi after encoding to MPEG will get loseless video quality?

Thanks
RGRDS
cccp

[communist]

Did you deinterlace or filter it in anyway? DV doesnt have a very high bitrate considering it is coded i-frame only (not big compression).

Also does your mpeg look far worse than your AVi or what?

Though DV is a mpeg derivate converting it to mpeg1/2 cant be lossless.

[bb]

Originally posted by ccc_p
resolution 720x575
The resolution should be 720x576 for PAL, or 720x480 for NTSC.
By the way: which settings did you use in CCE?
The bitrate you use is high enough to reproduce the video in a quality you should not be able to distinguish from the original DV. So what exactly is it that you don't like about your MPEG-2 encoded video?

Originally posted by communist
DV doesnt have a very high bitrate considering it is coded i-frame only (not big compression).
In fact the DV bitrate is pretty high (~3.5 MBps).

Originally posted by communist
Though DV is a mpeg derivate
I'd rather call DV an MJPEG derivate :) But well, you can say it's an MPEG derivate, too.

bb

[northern]

Originally posted by bb
The bitrate you use is high enough to reproduce the video in a quality you should not be able to distinguish from the original DV.

If the original DV is "bad quality" i.e. has lots of gain noise or is shaky etc etc. the outcome cannot be "great" even the high bitrate was used. I've seen too many examples of this when people complain that it is the fault of the "DVD making program" (mpeg2 encoder :p )when the homevideos look like crap compared to DVD movie releases and the original DV material ;-)

[bb]

Originally posted by northern
If the original DV is "bad quality" i.e. has lots of gain noise or is shaky etc etc. the outcome cannot be "great" even the high bitrate was used. I've seen too many examples of this when people complain that it is the fault of the "DVD making program" (mpeg2 encoder :p )when the homevideos look like crap compared to DVD movie releases and the original DV material ;-)
Even if the original DV quality is crappy, there are means of improvement: You have to filter the video before giving it over to the encoder. This can easily be done with the help of AviSynth and its filters. E.g. Convolution3D can do wonders in this area.

I may assume that people get good quality video, if they follow the "DV to DVD" guide, may I not?

bb

[northern]

Originally posted by bb
Even if the original DV quality is crappy, there are means of improvement: You have to filter the video before giving it over to the encoder. This can easily be done with the help of AviSynth and its filters. E.g. Convolution3D can do wonders in this area.


That is true. But I am talkin average John Doe, not enthusiasts like "us"... And even I hate using AviSynth... I prefer more to get the material as goog as possible at the very beginning (i.e. when shooting) instead of artifically tweaking it.

Naturally some color correactions have to be done if the material is shot using several cameras or the lightning was not perfect for the mood of the final product or... But that is normal...

[vhelp]

I'm not sure what you source originality is. Is it from a DV
camcorder (or dig8 or VHS-C conversions/transfer) and that you
are trying to encode this, or else are you trying to encode from
a previously recorded tape (whatever medium) etc etc.

That really does need to be cleared up :)

If your source from some brand of CAMcorder (dv/dig8/high8/vhs-c etc etc)
then I would say that as long as no tripod was used, then your maximum
result will deped upon your (or someone elses) hand moviements/shakes
while taking the footage at the time. So, you are subject to the end
results of your encoding (no matter which encoder you used)
.
.
Filtering is probably you last bet on any improvement from these type of
sources.

But, if you source is from a pre-recorded tv show, then that's yet
another ball game.
.
.
You have to determine if the source (the tv show/movie etc) was shot
on Film or is Pure Interlace.
.
.
If you have determined that the source contents is Film, then you can
include an IVTC in your encoding process.
.
.
If you have determined that your source is Pure Interlace, then you
can include (have the choice to) incororate a de-interlace (I would not
recommend if your goal is for dvd to tv viewing) OR ELSE, encode your source
as Interlace.

Now, if your source is from DV footage, and you used a tripod in ALL your
footage, you would definatly not have a problem w/ quality if you encode
w/ 8000 bitrate. But, if you handled your cam in your hand, then that
sheds a light on why your end results are poor at 8000 (assuming during
fast panning etc)

my 2cents worth.
-vhelp