I'm setting up DVD on my system (detailed below), but it's pushing the hardware to its limits by the look of it, and I want to know whether I should try a hardware decoder.
Hardware -------- Monitor: CTX 1451 Mainboard: Soyo 5EHM/5EH5 V1.x CPU: AMD K6-2 533 (running at 500) Chipset: ETEQ82c663 (VIA) Sound: AWE64 Value ISA Video: Nvidia Geforce 2 MX Samsung DVD ROM drive Software --------- mplayer 0.90rc2, SDL 1.2.5 >From other newsgroup postings, and articles online I've read, my hardware setup isn't the best for this sort of thing, given the combination of CPU, motherboard chipset and soundcard. However, I've enabled "VIA82CXXX chipset support" and "Use PCI DMA by default when available" in the kernel, and made sure, using hdparm, that dma is on for the DVD drive. My 14'' monitor is limited for practical purposes to one resolution, 640 x 480 @ 75Hz, so to be watchable, the image has to be resized using the SDL video output option. Analysing with vmstat, mplayer runs as follows (using the "nosound" option): When vo=sdl and display is fullscreen, CPU usage is around 93. When vo=sdl and display is windowed (it's larger than the physical screen size), CPU usage is around 84. When vo=sdl:dga CPU usage is about 96, and quality is lower. I've tried vo options of xv, x11 and the CPU usage is about the same as SDL windowed. >From what I've read a PCI soundcard should have less impact on CPU usage than an ISA one, but even so, I'm not sure there'd be enough leeway, given that the lowest CPU usage I've obtained with mplayer is in the mid 80s. When I have tried the sound, using "ao=sdl" or "aop list=resample:fout=44100" (it needs to be downsampled from 48khz) it won't sync at all with the video. So, I'm tempted to buy a hardware decoder: the Creative Encore DXR2 (IIRC). But before I do, I just wonder if there's anything else I might try, to lower the CPU usage and watch DVDs using only software decoding. (I've tried low-latency patches with games, but I didn't notice any difference.) _______________________________________________ Scottish mailing list [EMAIL PROTECTED] http://mailman.lug.org.uk/mailman/listinfo/scottish
