Acer n300 video playback problem

[Andy Whiteford]

Originally Posted by kool-ed

The N300 display is handled by a Nvidia GoForce 4000, a 3 year old graphical chip

Cool. Where did you find this out?

[Andy Whiteford]

Originally Posted by kool-ed

The N300 display is handled by a Nvidia GoForce 4000, a 3 year old graphical chip

Cool. Where did you find this out?

[kool-ed]

Originally Posted by Andy Whiteford

Cool. Where did you find this out?

Just right here, in the GoForce website itself
But I ask Acer France & Acer Germany first, and they confirm it.

Besides, i read that CorePlayer/TCPMP is not optimized for GoForce 4000, but it might be.
That is what CorePlayer devs answer when they were asked about this :

Sorry at the moment I can't answer if TCPMP will or when will support Goforce 4000.
We will contact Nvidia for getting the neccessary development tools, but we also have many other features and tasks ahead of us which needs to be done first.
bye, Picard

So... wait and see

[karlth]

Tried a number of encoding options using Pocket-DVD Studio and TCPMP never *stuttered* or frameskipped, even with VGA resolution sized clips. So the CPU is powerful enough.

Unfortunately the "page flip" effect was always visible during scene changes. You could see the new frame being painted onto the screen from left to right.

Watchable? Yes, unless there is a lot of quick editing going on in the movie. Optimal? Far from it.

[karlth]

Selecting GDI rendering in TCPMP instead of DirectDraw is quicker.

The problem remains though that the video controller struggles badly with full screen draws, i.e. any time the camera is moving.

[karlth]

Major head scratching going on now. :?

I closed TCPMP and restarted the video I had encoded using DirectDraw rendering (probably took off Video Smoothing as well) and lo it ran almost smoothly with no major page flip problems. :|

There was a comment on another board several months ago when someone ran a video benchmark using the N311 and on the second run experienced a dramatic performance increase.

I have no idea what is going on here. Is TCPMP running some configuration adjustment code?

More testing needed ...

[Andy Whiteford]

Did a VGA res movie playback smoothly? I'm guessing you recommend TCPMP?

[karlth]

Originally Posted by Andy Whiteford

Did a VGA res movie playback smoothly? I'm guessing you recommend TCPMP?

I haven't tested VGA res movies, the movie was encoded in 320x240 with a 250kb bitrate.

I have always used TCPMP so far on all my PDAs, it has always worked well.