Force TMPGEnc to stay below 700 Meg? How?

[oldfart13]

I can't use the bitrate calculators so I'd need to know how to make an Mpeg-2 file fit onto a 700 Meg CDR using a CQ template. As it is now, I usually have to re-encode a couple times to get it right. At 6+ hours for 45 Min. on my P3 1 GHz, it's way too time consuming. Are there ANY bitrate calculators that will take CQ into effect? FitCD doesn't...

[eddieshere]

you can use tmpgenc and then use vcd easy 1.2

i used panasonic and decoded a file to 775 mb and used vcdeasy 1.2 to burn it. it overburned the cd with it and it works fine.
try it .
also tmpgenc works very slow on your comp
i deleted alot of programs which start with windows startup and i got the program to encode down to about an hour now
i got tired of waiting a few hours

hope the info helps

[banjazzer]

Are there ANY bitrate calculators that will take CQ into effect?

No. The only way is to do a couple test encodes of a reasonable-sized and representative sample (I do 10 minutes at CQ 75 and CQ 85), get your pocket calculator out, and work out the CQ setting to get your target filesize. Often it works, occasionally it doesn't. Otherwise your options are to use 2-pass VBR, but then your encoding time will probably triple. Or to try CCE. Or get a much faster PC, but even with the fastest PC, encoding 2-pass VBR with TMPG is like watching paint dry in 100% humidity.

[ya_jai]

I always encode mpeg-2 file with CQ setting.

Here what I always do, encode only a couple of minutes at your target setting, then compare minute and filesize to see if the whole file how large it will be. Let's say if you encode 2 min with result of filesize 30MB then in one CDR (80mins) you can fit 53 minutes movie. Then if file too large you have to either decrease bitrate or CQ setting. Be aware that encode with full screen will take more space than letter box and wide screen.

This is my approximate CQ setting and minute fit in one CD.
CQ-100, 1850, audio 160kb = 60 mins
CQ-100, 2000, audio 160kb = 55 mins
CQ-100, 2200, audio 160kb = 50 mins
CQ-100, 2520, audio 160kb = 40 mins
These setting if only for TMPGEnc PLUS version. If in an old version like 12a I use CQ-65 or lower instead.

Note: all movies is not equal, filesize will depend on format of screen, motion of movie and etc...

[Anonymoususer]

There is a Bitrate Calculator called DivXLand Bitrate Calculator works pretty good..

[banjazzer]

All the bitrate calculators I have seen work from an average or constant bitrate. That is, they would come up with the same (or very similar) bitrate no matter what the source material. The only way you could estimate with CQ mode is if the bitrate calculator could analyse the source material. And they don't do that.

[Anonymoususer]

Works for me..comes pretty close to what I want...

[banjazzer]

So how does it tell the difference between very and poorly compressible source material?

[Anonymoususer]

It asks you what is the size of file you want..I put it in there and the audio Bitrate and it tells me how much video bitrate I need for it to come out 800MB;'s..I really don't think that you need anything about the source anyway...basically you have to know how big of a file you want for it to work...Also you put the length of the movie...in it for it to calculate...maybe you should try it before you criticize...

also how do I make my side picture a little bigger using Photoshop so it can be viewable...?

[banjazzer]

You don't set an average bitrate in CQ mode. You set a minimum and a maximum, but you have no idea of the actual bitrate chosen until it has been encoded. And this varies widely depending on the material. Do you use CQ mode?

[Anonymoususer]

Actually I set the value in Constant Bitrate...in the settings option I put all of the values for Maximum and Minimum and the file comes out fine...

[Deusxmachina]

6+ hours on a 1g PIII, something's wrong with that machine or you're using super-slow on the motion precision or something. My 933mhz Duron is similar to a 1g PIII, and it'll do 60 minutes in around 3 to 3 1/2 hours.

45 minutes should be pretty easy to fit on a disc. With 224 audio, min 300 and max 2300, cq should be around 80 or even higher. Two points is roughly about 50 megs usually. Drop the audio to 160 or 128, and you can up the cq for the video even more. But generally anything at 80 or higher looks very good.

ya_jai: Why do you use cq mode and then put the cq at 100? That's just CBR mode that way.

[oldfart13]

Using "High" not "Highest" because the caps contain a lot of action sequences. Could set it lower if I was doing animation. Got the latest cap down to 675 Meg through trial and error and the pic looks good. Just lowered the CQ slightly. I leave the audio alone at 224 from capture to final encode and never have a problem. I'm using a special template and CQ is about the only thing I touch. So far, I've had nothing but compliments from the Usenet users who watch my stuff...

[ya_jai]

To deusxmachina,

I have test between CBR and CQ_100 at same bitrate in 2.54 PLUS, and I get different filesize (about 10% less with CQ_100) at same quality(almost if not same ) of video. So how can you say CQ_100 eqaul CBR? If we are talking about old version, I'd agree about CQ_100 and CBR but in new version (at least mine) CQ_100 is about the same as CQ_65 of old ver.

Before when I used 12a version I'd set CQ to 65 but with new version 2.54 PLUS if set CQ below 80, quailty come out not very good.

[ya_jai]

Oh I forgot something, and i'm not sure if it's correct or not, feel free to correct me if i'm wrong. I think CBR will encode same bitrate at Max and Min, but in CQ I set Max to "whatever i design" and Min to " 0 ". That might be a different between CQ-100 and CBR.