DIVX to MPEG2 conversion in TMPGENc....VBR or CBR???

[Mocha]

If I want to convert a DIVX to mpeg2 svcd file, and the movie is a non-action film(people mostly standing around talking) What type of settings should I use? If VBR 2 pass...what type of min,avg,max settings should I use? Is highest quality motion search precision overkill, or will normal suffice? Is motion estimate search(fast) the same as low quality(fast)?

If I setup TMGENc to CBR ,highest quality motion search precision, a 582MB Divx file would take 32 hours to decode!!!!! IF motion search precision( I will call this MSP from now on) is set to motion estimate search(fast) the conversion would take 7 hours.

[DJRumpy]

It depends on what your doing with it. What format are you trying to fit your MPEG onto? DVD-R, CD-R?

Is size an issue? # of disks for final project? Quality?

[puertorican138]

Mocha, in TMPGEnc always set the "motion search precision" to high quality (slow). You won't notice in difference with highest quality and high quality. High quality cuts down on your encoding time also.




Hope That Helps!!! 8) :P

[Mocha]

DJRumpy


I am using 80 minute cd-rs. Number of discs isn't an issue. High quality would be nice
.As good as the quality of the mpegs bin/cues I have downloaded off of newsgroups.
THx

[DJRumpy]

I would suggest you convert them to CVD (352x480), if your player supports it, or SVCD (480x480) if it doesn't.
VIDEO TAB:
For settings, I would use CBR (bitrate 2520), if you worried about time, or 2 Pass VBR(min 300, avg 2000, max 2520), if your not worried about time. TMPGenc doesn't seem to like a minimum of 0 very much. You won't be sacrificing too much if you use 300. Try 0 for a minimum setting if you like. You can add more to your video bitrate if your audio is not good quality. Just borrow from the Audio bitrate to add to the video bitrate.
Motion Search Precision - You can use the highest motion search setting in TMPGenc, but everyone will tell you that the difference will hardly be noticeable. (High Quality - Slow) is a good trade-off. I wouldn't recommend choosing anything faster than Motion Estimate Search (fast). If you use the FAST setting, and notice poor quality during the higher motion scenes, then change this setting to one of the slower settings.


Set DC Component precision to 9 or 10 (preferably 10).

On the Advanced Tab, select 3:2 pulldown (this is assuming your DIVX is 23.976 frames per second. Almost all of them are to create the smallest DIVX size possible). You should not need to use any of the other filters if your DIVX is a good quality rip.

GOP structure:
Use the default GOP structure (Standard).
Select 'Detect Scene Change'
The other options here should remain unchecked.

Quantize Matrix:
Many people swear by this section. I rarely touch it with the exception of the option for CG/Animation (if your source is animated/cg). Otherwise, leave the setting on DEFAULT.
Under Special Settings, leave everything unchecked, except for 'Use floating point' if it's available.
Leave Soften Block Noise unchecked if your source is good. This blurs your final product somewhat, and shouldn't be needed if your source is good.

Audio:
Match your source's bitrate. If your source DIVX contains 128kbs MP3, then set your audio here to match. You won't get better sound by increasing the bitrate beyond what's already there. If you are unhappy with the sound, use the Environmental Settings in TMPGenc to select a different audio editor (like TooLame), which gives good results.

That's about it. You should get quality very simular to what you have in your DIVX rip. All of this assumes your DIVX rip is a high resolution rip (640x272 or therabouts), and ripped straight from DVD.

Good luck! 8)

[Mocha]

DJ

THx for the detailed info. Looks very advanced....have lots to play around and experiment with I see. APpreciate all of your responses!!!