DVD playback on SAM440-system?

[Amiga_CDTV]

The CPU and RAM as per the Vesalia page ad. I will be back to the machine in a few days and I'll some more troubleshooting.

[takemehomegrandma]

@Amiga_CDTV

AFAIK you must enable frame skipping when playing DVD's on Sam.

[redrumloa]

@Amiga_CDTV
 
AFAIK you must enable frame skipping when playing DVD's on Sam.

Are you kidding?

[takemehomegrandma]

Are you kidding?

Well, it's the usual advised remedy to these kind of problems as far as I have seen.

[Zac67]

I have absolutely no idea what a SAM and OS4 are capable of (as a die-hard classic user) but for smooth DVD playback you need
- DMA transfer for the DVD drive (PIO will heavily load the CPU)
- (hardware) video overlay on the gfx card
-- MPEG-2 uses YCbCr color space (similar to YUV); using the CPU for RGB conversion costs quite a bit of power
-- scaling the image to the desired size - again - puts load on the CPU

Remember, you've got 40 ms to decode and show each video frame (PAL). If you waste too much for data transfer, color space conversion and scaling you're quickly running out of time.

[Amiga_CDTV]

@Amiga_Nut: What is the CPU/speed of your system and the RAM?

Back at home. System information says it's AMCC PowerPC 440ep Rev C / 666 Mhz. RAM: 512 MB.

@takemehomegrandma: Where can I activate frame skipping?!

[Amiga_CDTV]

I sent a message to the Vesalia (with a link to this thread). They tested on similar setup and the playback only jitters when playing encrypted DVD's. Non-encrypted are told to work fine. So the problem seems to be the encryption that takes the CPU time.