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Video stutter on 1280x720 - where's the bottleneck?
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<blockquote data-quote="dm15644" data-source="post: 102053"><p>Hi there</p><p></p><p>Just binned my 30" CRT TV and got myself a Sanyo PLV-Z5 beamer. So sweet! But where would be the fun if I didn't run into any problems...</p><p></p><p>After I got the beamer I've switched the display resolution in windows to 1280x720 which is the beamer's native resulotion. Seems I've got performance problems since then. When playing back SD DVDs or DivXs (from HDD) I've got video stutter every 3 minutes or so. Audio plays fine. When I switch back to 800x600, the stutter is gone.</p><p></p><p>I also noticed that UltraVNC remote control reacts extremely slowly once fullscreen video is enabled. Say, I press ESC on the UltraVNC client to leave full screen, then it would take 10 seconds until it actually happens. On 800x600 it happens just instantly.</p><p></p><p>At 1280x720 CPU load is at 20..40% when playing back DVD, so I ruled this one out. Memory usage of MediaPortal is approx 440 MB, which is somewhat close to my 512 MB RAM (350MB on 800x600). I also suspect that 1280x800 pushes the Radeon 9550 to it' performance boundaries.</p><p></p><p>My conclusion so far is that either I need to get more RAM or I need to upgrade my graphics card. But I don't know for sure - any ideas what to test to be more sure?</p><p></p><p>What would be the minimun amount of RAM/minimun graphics chip that you would suggest so that my system can cope with 1280x800 display?</p><p></p><p>Here's my setup:</p><p></p><p>MediaPortal Version: 0.2.2.0</p><p>MediaPortal Skin: Blue Two</p><p>Windows Version: WinXP SP2</p><p>CPU Type: AMD Sempron 3000+</p><p>HDD: Samsung PATA 160 GB, 5400 rpm</p><p>Memory: 513 MB DDR 400</p><p>Motherboard: ASUS K8V-MX</p><p>Motherboard Chipset: VIA</p><p>Motherboard Bios: 0203</p><p>Video Card: MSI Radeon 9550 128MB</p><p>Video Card Driver: Catalyst 6.2</p><p>Sound Card: onboard</p><p>Sound Card AC3: onboard</p><p>Sound Card Driver: the same since 12 months....</p><p>1. TV Card: Pinnacle PCTV 310i</p><p>1. TV Card Type: HW</p><p>1. TV Card Driver: 1.3.3.0</p><p>MPEG2 Video Codec: any</p><p>MPEG2 Audio Codec: any</p><p>HTPC Case: Silverstone LC-11M</p><p>Cooling: active</p><p>Power Supply: stock 300W</p><p>Remote: Logitech Harmony 555</p><p>Beamer: Sanyo PLV-Z5</p><p>HTPC-Beamer connection: DVI to HDMI</p><p></p><p>Thanks a lot for your help.</p><p></p><p>jayrock</p></blockquote><p></p>
[QUOTE="dm15644, post: 102053"] Hi there Just binned my 30" CRT TV and got myself a Sanyo PLV-Z5 beamer. So sweet! But where would be the fun if I didn't run into any problems... After I got the beamer I've switched the display resolution in windows to 1280x720 which is the beamer's native resulotion. Seems I've got performance problems since then. When playing back SD DVDs or DivXs (from HDD) I've got video stutter every 3 minutes or so. Audio plays fine. When I switch back to 800x600, the stutter is gone. I also noticed that UltraVNC remote control reacts extremely slowly once fullscreen video is enabled. Say, I press ESC on the UltraVNC client to leave full screen, then it would take 10 seconds until it actually happens. On 800x600 it happens just instantly. At 1280x720 CPU load is at 20..40% when playing back DVD, so I ruled this one out. Memory usage of MediaPortal is approx 440 MB, which is somewhat close to my 512 MB RAM (350MB on 800x600). I also suspect that 1280x800 pushes the Radeon 9550 to it' performance boundaries. My conclusion so far is that either I need to get more RAM or I need to upgrade my graphics card. But I don't know for sure - any ideas what to test to be more sure? What would be the minimun amount of RAM/minimun graphics chip that you would suggest so that my system can cope with 1280x800 display? Here's my setup: MediaPortal Version: 0.2.2.0 MediaPortal Skin: Blue Two Windows Version: WinXP SP2 CPU Type: AMD Sempron 3000+ HDD: Samsung PATA 160 GB, 5400 rpm Memory: 513 MB DDR 400 Motherboard: ASUS K8V-MX Motherboard Chipset: VIA Motherboard Bios: 0203 Video Card: MSI Radeon 9550 128MB Video Card Driver: Catalyst 6.2 Sound Card: onboard Sound Card AC3: onboard Sound Card Driver: the same since 12 months.... 1. TV Card: Pinnacle PCTV 310i 1. TV Card Type: HW 1. TV Card Driver: 1.3.3.0 MPEG2 Video Codec: any MPEG2 Audio Codec: any HTPC Case: Silverstone LC-11M Cooling: active Power Supply: stock 300W Remote: Logitech Harmony 555 Beamer: Sanyo PLV-Z5 HTPC-Beamer connection: DVI to HDMI Thanks a lot for your help. jayrock [/QUOTE]
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