DivX 5 - Video size error?

[H4wkin5]

Hey I’m having trouble getting the Video size encoded with DivX Pro 5.0.3 right.

I don't think the “equation” I use is flawed but i still get a difference of -1,4% to -2% this is not a lot but it matters ;)

The “equation” is roughly:
Bitrate * Secs = Size

So is this a bug in DivX 5.0.3 or is it something else?

[jggimi]

Try using a bitrate calculator. I recommend using Gordian Knot. Gknot is a bitrate calculator that will also take into account audio soundtracks and AVI overhead. (Gknot is also an AviSynth script generator, and a complete DivX encoding suite, though it doesn't directly encode DivX 5.03+, only DivX 5.02 or DivX 3.11.)

[Acaila]

The correct calculation is:
Bitrate (kbps) * Duration (secs) * 1000 / 8 / 1024 = Size (kB)

DivX 5 uses 1 kbit = 1000 bits, instead of 1 kbit = 1024 bits like DivX 3 and XviD do.

[H4wkin5]

Thx Acaila that was the flaw

Now for some testing :D


btw i liked GKnot with DivX 5.0.2 but now that i can use n'th pass i will ;)

[H4wkin5]

Am I right in assuming that the same rule applies with DivX 4 (1kbit = 1000bits)

:D :rolleyes: :) :p ;)

[jonny]

Yes :)