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thewolf99
12th August 2007, 12:33
Most of the time I use DVD Shrink for backing up my movies onto hard disk to be streamed across my house, however it isn't so gd with compression of 70% or less generally (I'm sure you already know that.) My streamer (D-Link DSM320) has a quirk where it won't play movies over the size of an DVD-5 disk (i.e. just around 4GB) so its effectively the same as backing up from DVD-9 to DVD-5.

I therefore use DVD Rebuilder (HC 0.18 encoder) to back up large movies (e.g. 7GB or more) such as The Rock, Casino Royale, or any Superbit release. However, while all the light scenes appear beautiful, unfortunately dark scenes are over-compressed - slight macroblocking appears on solid colours like dark skies. I've increased the VBR to 40 with effect.

Thus, is there a profile for reasonably high bitrates (i.e. 3.5-4mbit) as the sharpness in light scenes and on facial details is ruined by the macroblocking in dark scenes. Its not like I need the movies to be really small, but unfortunately Rebuilder seems to encode dark scenes at around 1.3mbit/s or so whilst doing light scenes at 8mbit/s. I just need a profile that does something less extreme, like 3mbit min, 6 max etc. Like I said, changing the VBR bias to 40 doesn't really help.

I apologise beforehand if my question has already been posted here before - I used the search engine but came up with nothing.

Thanks! :)

P.S. I'm a complete amateur at Rebuilder so could anyone giving advice explain it in noob-terms? Cheers :D

linx05
12th August 2007, 13:33
What version of DVD Rebuilder are you using? Because the version of HC encoder is very old. Update to the latest by going here (http://www.bitburners.com/HC_Encoder/) or by installing the latest version of DVD Rebuilder.

thewolf99
12th August 2007, 13:36
What version of DVD Rebuilder are you using? Because the version of HC encoder is very old. Update to the latest by going here or by installing the latest version of DVD Rebuilder.

Apologies, its 0.18 :) Is there much of a difference between 0.18 and 0.21?

blutach
12th August 2007, 13:45
0.21 is much faster for one.

Regards

thewolf99
12th August 2007, 15:16
What about quality though?

Sharc
12th August 2007, 15:28
You may want to set lumgain to 4 in HC 0.21. You can adjust the lumgain in the settings menu of DVD-RB (Settings -> HC settings -> Adjust Luminance Gain).
I assume you are using the pro version of DVD-RB.

Edit: Also make sure that you have selected "BEST" for HC Quality/Speed selection.

thewolf99
12th August 2007, 16:40
You may want to set lumgain to 4 in HC 0.21. You can adjust the lumgain in the settings menu of DVD-RB (Settings -> HC settings -> Adjust Luminance Gain).
I assume you are using the pro version of DVD-RB.

Yep I'm using version 1.26, what does luminance do exactly?

Sharc
12th August 2007, 17:50
According to the HC manual:
"This command adapts the quantization matrices on dark scenes so the bitrate will be raised".

linx05
13th August 2007, 03:21
Yep I'm using version 1.26, what does luminance do exactly?
The latest is 1.26.2.

tom942
13th August 2007, 08:42
I would suggest you to use HC without lumgain first. Later if you see still artefacts in the dark areas, try lumgain 1 or 2 (JDobbs suggested me to set it to 2). Then come and tell us :)

laserfan
14th August 2007, 00:44
Sharc had said "set it to 4" and as I looked at RB it could not be set past 3???

linx05
14th August 2007, 02:55
Sharc had said "set it to 4" and as I looked at RB it could not be set past 3???
I reported this as a bug but nobody replied to my thread so I don't know what is happening with it. You can see it here (http://forum.doom9.org/showthread.php?t=127791).

Fishman0919
14th August 2007, 03:54
Yeah, I noticed that to.... in DVD-RB pro 1.26.2 you get 0-3 but in the HC GUI you get 0-4

tom942
14th August 2007, 09:35
But you can set it in rebuilder.ini to 4. The curious thing is that if you then check it in DVD-RB, it shows number 4.