divx 5.1 log file

[wertert]

encoding with vdub I get a divx log file ie

##map version 8
nframes 7295
timescale 30000
passes 1
seq deltaT type total_bits
0 0 I 21808 0.000000
2 2400 P 8864 0.029413
1 -1200 B 2672 0.011979
4 3600 P 7640 0.027001
3 -1200 B 2864 0.012934
6 3600 P 7528 0.027394
5 -1200 B 2592 0.011783
8 3600 P 7208 0.026348
7 -1200 B 2680 0.012144
10 3600 P 6832 0.025827
9 -1200 B 2728 0.012326
12 3600 P 7544 0.027166
11 -1200 B 2816 0.012696
13 2400 P 6704 0.024287
14 1200 I 107768 0.000000
16 2400 P 53536 0.047346
15 -1200 B 24536 0.030126
18 3600 P 62384 0.042484
17 -1200 B 15400 0.028230
20 3600 P 54064 0.043727
19 -1200 B 21768 0.029441
22 3600 P 70808 0.044417
.
.
.

if I add up the total_bits column I'm thinking I should get the same size as the video I've just produced - not so !

This comes in as 97Mb ( =815948248/8/1024/1024 ) when the final movie is 33.2 Mb. What is going on here then ? That's way off. Even if I ditch all the I frames it's still way off.

Many Thanks

wertert

[wertert]

I would really appreciate it if anyone out there could point me in the direction of a FAQ for the divx log file. I'm still not getting anywhere with this. That total_bits value does seem to relate to anything I can identify.

Many Thanks

[Kalicrys]

if you try playing that video file, you'll notice it won't play.
the first pass in an n-passes decoding is like that,
run it through another pass and you'll get a valid video,
and the size will match with the log file, wertert.

[wertert]

A reply !

Of course you are right and you can't play the output from the first pass. I am using the file size of the finished movie after the second pass COMPARED with the log file generated from the first pass.

[Kalicrys]

well that's interesting, how does it compare to the log file after the second pass?
& what was your target file size? I'm guessing from the log file that you were aiming at about 100 megs (4000 or so kbits/sec)?
oh yeah, are you using the original 2pass method?

The bit totals in my log files seem to add up to the right size.
The only anomaly I've experienced with DivX 5.1 so far is my odd frame problem (you've probably noticed my reply-less post).