DVD Rebuilder with Procoder - image dark - 601 shrink?

[xycer]

i tried using procoder, but found the output to be darker. i googled this problem, and it seems that many recommend setting the 601 filter to shrink, or something.

im using dvd rebuilder with procoder 2.04. how do apply this filter?

[xycer]

ok i found out how to set the filter. if i set it, will it be saved so when i use procoder with a future project, it will apply that filter every time?

[fritzi93]

ok i found out how to set the filter. if i set it, will it be saved so when i use procoder with a future project, it will apply that filter every time?

Yes, unless or until you remove it from the filter editor.

I'm curious about the "601" filter, do you mean the "BT709ToBT601" filter, or the "ColorMatrix" filter? Or something else entirely? And is this a correction recommended for Procoder? If so, is the source type determinative as to whether or not to use it? I recall that sometimes encoding a DivX or XviD with Quenc or TMPGEnc can result in slightly off color, which is perceived as a loss of brightness. As I understand it, it can occur when going from YV12 colorspace to RGB or YUY2, but that's about the extent of my knowledge. Colormatrix, for instance, supposedly clamps the color to 16-235 (SDTV colorspace).

I gotta ask: What's your source? And: Have you tried the "Levels" or Tweak" filters for re-encoding dark DVDs, assuming that's what you're dealing with? Good luck.

[xycer]

the filter is one of procoders built in filters. when you add a source to procoder and go to advanced -> video filters, theres a list of built in video filters to choose from. one of them is called "601 Correction - Shrink Color Space". ive heard that procoder produces the wrong brightness all the time, so using this filter will make it more true to the source.

when you say "unless or until i remove it from the filter editor", do you mean the filter editor in DVD-RB? if so, i dunno if i add "601 Correction - Shrink Color Space" to the filter editor, if DVD-RB will understand it, as i think its a procoder filter.

the source was a DVD ripped to my harddrive. i havent tried any levels or tweaks, as im pretty noobish when it comes to that stuff. i just started using procoder (and DVD-RB), so i googled my problem, and heard you have to apply this filter.

[manono]

when you say "unless or until i remove it from the filter editor", do you mean the filter editor in DVD-RB? if so, i dunno if i add "601 Correction - Shrink Color Space" to the filter editor, if DVD-RB will understand it, as i think its a procoder filter.

fritzi93 was talking about adding the AviSynth BT709ToBT601 or ColorMatrix filters to the DVD-RB filter editor. It has nothing to do with any special Procoder only filter.

[fritzi93]

when you say "unless or until i remove it from the filter editor", do you mean the filter editor in DVD-RB? if so, i dunno if i add "601 Correction - Shrink Color Space" to the filter editor, if DVD-RB will understand it, as i think its a procoder filter.

fritzi93 was talking about adding the AviSynth BT709ToBT601 or ColorMatrix filters to the DVD-RB filter editor. It has nothing to do with any special Procoder only filter.

Thanks for the clarification. Yes, I thought he was using the DVDRB Filter Editor and editing an Avisynth script. :P

Anyway, I'm still unclear about why and when you'd need to clamp the color in Procoder.

Thanks, Manono, I kinda suspected you (or edDV) would respond, given your knowledge of colorspace.

[BJ_M]

ive heard that procoder produces the wrong brightness all the time,

not true -- i've shown and proved that here some time ago .....

[manono]

Hehe, thanks for the kind words, fritzi93, but as far as colorspaces go, I just do what my betters tell me to do. It seems that Procoder outputs Rec.709. You can confirm that by opening a Procoder encoded Vob or M2V in DGIndex and running the Preview (File->Preview). The Information window that opens up will tell you the Colorimetry. The only time I can see that the output might be darker than the source would be if the source is Rec.601 or equivalent (again, run the DGIndex Preview on one of the source vobs). In such a case, you can use ColorMatrix in the Filter Editor of DVD-RB. You'll have to load the Plugin (unless you stick it in the Plugins folder), and then add the line:

ColorMatrix(Mode="Rec.601->Rec.709")

You can find it here:

http://www.avisynth.org/warpenterprises/

It has a good help file included. I don't use Procoder so I don't know for sure, but I think that Colormatrix will do the same as that Procoder filter.

[fritzi93]

Thanks, Manono, that's what I thought as well, just use ColorMatrix. I have that one, but haven't had occasion to use it yet. Like a lot of the other Avisynth filters.

And thanks, BJM, I'll have to look up some of the encoder test threads. Oh well, I had a Procoder trial long ago, decided to get CCE instead.