Avisynth script for movie under 4GB with DVD-RB

[TECK]

I noticed something strange... if I have a movie that is way under the regular layer size and apply a avisynth script to it, DVD-RB will automatically re-size it to the normal expected size.

Is it because I have set into the .ini file the CCETargetSectors?
Thanks.

[SkVid]

I can confirm that the rebuilder resizes movies with less than the expected size so that the avg bitrate of the copy is higher than the original.
It doesn't do it in the no compression mode.
But why is this behaviour strange to you?

[jdobbs]

I don't think I understand... what are you saying?

[SkVid]

When you have an original dvd with a size of about 4 GB and you go through the prepare phase then the rebuilder blows it up to a fully filled dvd by increasing the bitrate.
For me this is normal and o.k.
If I don't want this I have to choose the no compression mode.

[jdobbs]

Oh. Okay.

Actually I used to limit the bitrate to 100% of the original... but decided that was a bad idea and removed it in v0.91 -- because sometimes filters, resizing, or other processing can be applied that might be helped by an increased bitrate.

[SAPSTAR]

Oh. Okay.

Actually I used to limit the bitrate to 100% of the original... but decided that was a bad idea and removed it in v0.91 -- because sometimes filters, resizing, or other processing can be applied that might be helped by an increased bitrate.

And it was a good idea ..some old movies are not always really well encoded/filtered....you can improve it by applying some denoisers and have a collector edition ;)

[SkVid]

This is why I think it is o.k.

And I know that in the no compression mode there is no chance to add filters. So If TECK wants to have the size to be the same as the original he is free to use some of those helping tools like RB-Opt, etc. to set the bitrate back that of the source.

[TECK]

Thanks guys for the info, I learned something new... again. :)