Resolume Forum

Hi all,

I've been using Resolume 2.41 for a while with great pleasure. I am thus naturally evaluating Resolume 3 to see if it worth going there.

While I am quite enhousastic about new features I am facing the following problem:

Let's consider 3 given video clips (not containing audio).

In Resolume 2.41 I am able to play these 3 clips at the same time, using various blend modes and effects, with working resolution 640x480 and renderding 800x600. The framerate is perfect (as smooth as played outside of Resolume).

Using the same 3 clips, on the exactly same system, I am not able to go higher than ~7 fr/s with Resolume 3, except if I check "disable global effects % blend mode". In this case the frame rate is again ~25 fr/s and everything is smooth.

The problem seems to be really related to blend modes, since even with a single clips, the frame rate range from 12 fr/s to 20 fr/s depending on which blend mode is use for this single clip.

I am not using the PICvideo codec (but DivX), but again, these clips work perfectly with Resolume 2.41...

Is PICVideo absolutely mandatory in Resolume 3?

Thanks in advance for you reply.

No you do not have to se the PICvideo MJPEG codec to get a decent frame-rate.
What operating system are you using? Vista?
It sounds like the drivers of your video card are throttling back to software rendering so please make sure you have the latest drivers installed for your video card.

Hi,

Thanks a lot for your prompt reply.

I am using Windows XP SP3 (32bit), not Vista. My system has a Core2 Duo, 4Gb of Ram, and not so slow hard drives.

I don't think the problem might be related to hard drives, anyway.

It might be related to my graphic cards, I don't know. I have 2 decently recent Nvidia cards with recent drivers. I am going to update you later with the exact reference of cards and drivers, it might help.

However, I noticed that my CPU is use at almost 100% when rendering these clips using blend modes. Could it be possible that the GPU is not used at all? Is it a problem to have 2 cards? (I was not trying to render on 2 cards by the way).

Thanks again.

Hi,

I am following up on my last post.

I definitely observe what I described, not matter what I try (I tried the PICVideo codec for instance): if I am using blend modes (and I would liek very much to) the frame rate is unusable (as low as 7-8 fr/sec) with Resolume 3. The same video played with Resolumne 2.41 on the very same machine is perfectly smooth.

If I disable the blend, my frame rate is above 30fr/sec (for clips encoded at 25 fr/sec!).

I have 2 graphic cards: one Nvidia GeForce 7100 GS and one Nvidia GeForce 8500 GT. The 7100 GS is the primary, the second one is currently disabled. I just updated my drivers yesterday, everything is fresh and clean.

Any idea?

Thanks in advance.

I have also seen Resolume 2.41 run faster than Resolume 3 with some clips.

The system is a Thinkpad W500 with ATI FireGL 5700, Vista SP1. Res 2.41 gets 40fps or more, Res 3 gets about 24 fps. That is with 3x 640x480 MJPEG clips playing at once - same clips in both cases.

Hi there,

just a new follow-up regarding this thread.

I wanted to inform you that my problem was indeed related directly to my video hardware (and only to it). I recently tried another video card, based on the Nvidia 6800GS chip. I didn't understand everthing, honestly, but a friend told me that even if this chip is supposed to be older and weaker than my previous ones (8500 GT and 7100GS) the other components on the board can make a huge difference (well this new board has a large fan, the previous ones were passive).

With this new board, I get an incredible 50-60 frames per sec with Resolume 3 with the same clips than before.

It might be a good idea for the Resolume team to maybe conducts a few tests with different video card models (not only chips) so we as users can choose the best hardware. Definitely the video hardware could be the bottleneck with Resolume 3.


Regards.