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Adjusting color when encoding with XviD
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Tompe
Newbie
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26. July 2004 @ 03:05 _ Link to this message    Send private message to this user   
I hope I don't get killed for posting this but I have now spent quite a few hours browsing through the net and searched all over this forum but can't seem to find a good answer to what I think is a simple question.
I have for the first time in my life tried to make a video file of a DVD.
I used the program IMToo DVDripper and encodes with XviD.
Everything works great I must say and the quality looks really good.
The only thing I am not 100% happy with is the color in the video and maybe some more brightness would be nice. If I compare my file against the original DVD I can see that I need just a little bit more color and some brightness. Now the question is.
Is there some setting in XviD I can change to do this or do I have to use another program and load my video in that one to fix the color and brightness?
I have looked in XviDs advanced options menu (global, quantization, Two Pass, Alt. curve etc..) and read a lot about those but I don't know what to change.
Forgive me if I'm stupid but I am very new to working with this.
The_OGS
Senior Member
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26. July 2004 @ 10:01 _ Link to this message    Send private message to this user   
Hi Tompe,
Nothing dumb about your questions :-)
I always adjust the brightness of a backup +10 in DVD2AVI. (This is a frameserver that GKnot uses to serve VOBs to VirtualDub.)
Video > Luminance Filter > Gamma (+10 or ?)
Or (if you forget) you can easily edit the *.d2v file with notepad...
If you don't use GordianKnot
http://www.afterdawn.com/software/video_software/video_encoders/gordian_knot.cfm
then I don't know how you'd apply the corrections, but it would be done by your software and not by the xvid codec itself.
And, you would want to adjust during the backup - you cannot go back and adjust an AVI, once it has been created.
Apart from this, you must try and adjust your playback settings! ;-(
Regards

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Tompe
Newbie
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27. July 2004 @ 10:31 _ Link to this message    Send private message to this user   
Thanks for your answer The_OGS. Much appreciated.
Now I have another problem. I have made a very good looking XviD but the only problem is the audio.
It is to low. I have used this ripping guide http://www.xpd8.net/articles.asp?id=52

By looking at this picture http://www.xpd8.net/files/articles/input_settings.jpeg there is one way to adjust the volume but no matter how high I put that setting (3 in the picture) the audio won't get any louder.
Is there any other way to increase the volume during the encoding process?
Doing it afterwards is not a good option I think because I've tried it.
I imported the file to Adobe Audition and increased the volume but the problem is when I save the file it goes out of sync with the video. The best way is of course if the audio volume is correct right away.
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The_OGS
Senior Member
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27. July 2004 @ 13:49 _ Link to this message    Send private message to this user   
Using SmartRipper I will Demux the AC3 audio from DVD to a separate file.
Then I use BeSweet to extract (decompress) the AC3 to WAV.
Now, the BeSweet GUI works as a frontend for the DOS program AZID (which is really what's doing the job).
AZID does a two-pass audio extraction, the first pass detects the highest audio level in the AC3 (ie. -18.2dB).
Then, the second pass will normalize volume to 0dB (ie. +18.2dB !)
You can also select the dynamic range of the WAV file: Normal compression, Heavy compression (for action/adventure with gunshots, sirens & explosions) or Light compression (for music/concert film).
I take the resulting WAV and then compress it to RiffWav MP3 - this is an MP3 with a RiffWav header and the filename *.wav
I mux this with the perfect video from GKnot, using VirtualDub, into the finished AVI.
Always perfect 23.976fps, always synchronized, every time :-)
I do not use the DVDx 2.2 (perhaps someone who does could help you immediately) but you will never get that perfect 2-pass audio rip, normalized to 0dB, any other way that I know of...
http://www.afterdawn.com/software/audio_software/audio_tools/besweet.cfm
http://www.afterdawn.com/software/audio_software/audio_tools/besweetgui.cfm
BTW BeSweet does all kinds of things - just go right for the AZID tab, to perform this extraction, when you first fire it up.
There are lots of settings & adjustments! If you decide to check the program out you can bring any questions you have right back here.
L8R

ABit AB9 Pro
Intel Core 2 Duo E6420 @ 2.4GHz
2GB OCZ PC2-6400 Platinum XTC R2
ATI Radeon X1900XT 512MB
Enermax Liberty 620W
320GB/16MB WD, 150GB/16MB Raptor
Plextor PX-755SA DVD (SATA)
Related links
Download XviD codec from here.
 
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