Low FPS in Joining 2 AVI files...

[Tatase]

Hi to all,
I bought a new PC, Shuttle XPC w/Athlon64 3200, 512MB DDR@400Mhz etc etc.
I installed VirtualdubMod from sourceforge and I need to join 2 avi files, sometimes Xvid, sometimes DivX5.
The problem is that if I join two Xvid (I have XviD-1.0-RC3-29022004) I get about 2000 fps (obviously I select (direct stream copy), but when I append 2 divx I get more or less 150-200 fps.
I installed the free DivX5 codec from DivX.com.
The thing that makes me go crazy is that with my previous PC (2 cpu@866Mhz 256MB Ram) I used to get 1500-1700 fps. This because in direct stream copy the factor is the speed of the HD, and not CPU. What I don't get is why now Xvid is @2000fps and DivX is @150fps. So HD in my current configuration is not a factor.
It's like some kind of forced recompression is made all the times, even if I select direct stream copy.
Thanks for any reply.

Tatase.

[Malevolent]

Try using VdubMod 1.5.4.1

[Suiryc]

Originally posted by Tatase
The problem is that if I join two Xvid (I have XviD-1.0-RC3-29022004) I get about 2000 fps (obviously I select (direct stream copy), but when I append 2 divx I get more or less 150-200 fps.

That's our new way to promote XviD ... just kidding :p

From the look of it, your XviD file had CBR audio and your DivX file had VBR audio.
There was a bug (introduced in 1.5.10.1) making muxing 10 times slower with VBR audio. It should be fixed now (see build 2439).

[Tatase]

Thank you guys, you two hit the spot.
One more happy guy is now on earth.