1-pass-vbr video files are now too big for BBMpeg

[sandchar99]

I'm sorry in advance if this should be going to the bug tracker, but I don't think it is a bug. Maybe it falls into the category of "bug introduced".

DVD2SVCD 1.2.1b1
Change: When Using CCE's 1-pass-vbr dvd2svcd used to use the calculated bitrate as Max. Bitrate in CCE, but that has changed so that it's using dvd2svcd's Max. Bitrate from the bitrate tab.

Tried my first encode using the new version and I ended up with three extra CDs (for a total of 6 CDs, when I was expecting 3) because the total MB for each intended SVCD exceeded my 795 Mb limit by about 80-120 MB. bbMpeg ended up making an muxed file for each video/audio pair because the video file sizes themselves were far greater than 795 MB.

My usual one pass VBR settings are: Q8, IQ 20, max bitrate 2498, max average 2400 and I set my min bitrate to usually 200 below what the calculated bitate is. IE, if DVD2SVCD in the bitrate tab predicts 45 mins will have a video bitrate of 2100, I set the min bitrate to 1900.

This usually gives me a bin file 750-800 MB range but usually pretty close to 800 MB and I never exceeded the CD size limit. When I end up with a 750 MB bin file, I usually reencode the audio tracks at a higher bitrate to make up the small difference.

DVD2SVCD: I wonder if you could go back to having CCE use your calculated bitrate instead of the max bitrate. It always worked well for me.

Thanks for everything

:)

[DDogg]

This is a bit sticky as I am told I am the one that got D2s to use the predicted bitrate in stead of min and max as it should have always been. I think this was a form of workaround way back before I/we really understood OPV.

In fact, OPV must be min/max to even operate properly so he was really just fixing a bug. The solution now is actually much better. In the advanced forum just get and use Tylo's D2SRoBa plugin which has a size prediction method for these types of encodes as well as other features. It will do a much better job for you than the old method, which in many ways just forced OPV into a sort of CBR mode which is why your solution was seemingly working.

/Add: BTW, After the dust dies down and D2S has any remaining kinks ironed out of the DVD section, the plan as I understand it, is to then add a powerful size prediction mode for CCE OPV as now exists somewhat for TMPG CQ mode. This new feature will also add much more power to the CCE RoBa process currently hidden away in D2S.

[KYUSS]

i am getting this problem too now as well....never had it with the older versions on dvd2

how can i get hold of older versions again please?

thanks

[dvd2svcd]

I will make it so you can switch between the two used bitrates.

[sandchar99]

Thanks DVD2SVCD

Obviously I thought about using Tylo's D2SRoBa plugin but I just wanted to try out the new version "as is".

I also thought about seeing what the calculated max average bitrate and plugging that in for the max bitrate. That would essentially mimic what CCE had done via DVD2SVCD in the past with one exception.....

That would effectively bring the max bitrate down for ALL of the discs in a multi-disk set. When using Frame selection, one disc might be 43 minutes, another 47. The 43 minute disc would be using the max bitrate of the 47 minute disc, i.e. the lowest common denominator.

Originally posted by dvd2svcd
I will make it so you can switch between the two used bitrates.

So DVD2SVCD, thanks once again for your consideration.

:)

[sandchar99]

- Enhancement: Now you have the choice between using "Max. Bitrate" or "Calculated Bitrate as Max. Bitrate" (the former is used in 1.2.1 and the latter in the previous versions) when using 1-pass-vbr in CCE.

Thanks Again

You rule

:cool: