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MediaPortal 1
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Codecs, External Players
TV post processing and slight delay after switching channels
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<blockquote data-quote="q_no" data-source="post: 380560" data-attributes="member: 88671"><p><strong>MediaPortal Version</strong>: 1.0</p><p><strong>MediaPortal Skin</strong>: blue wide</p><p><strong>Windows Version</strong>: XP MCE SP3</p><p><strong>CPU Type</strong>: AMD 5050e</p><p><strong>HDD</strong>: WD 250GB 2.5"</p><p><strong>Memory</strong>: 2GB DDR2 667</p><p><strong>Motherboard</strong>: Asus M3N78-VM</p><p><strong>Video Card</strong>: NV 8200onboard</p><p><strong>Video Card Driver</strong>: ?</p><p><strong>Sound Card</strong>: Via onboard</p><p><strong>Sound Card AC3</strong>: Via onboard optical</p><p><strong>Sound Card Driver</strong>: via 6.0.x</p><p><strong>1. TV Card</strong>: leadtek winfast pvr 2000</p><p><strong>1. TV Card Type</strong>: analog</p><p><strong>1. TV Card Driver</strong>: </p><p><strong>MPEG2 Video Codec</strong>: NV pureVideo</p><p><strong>MPEG2 Audio Codec</strong>: SPDIF</p><p><strong>h.264 Video Codec</strong>: poverdvd 7/8</p><p></p><p>Hi,</p><p></p><p>I'm trying to improve the image quality of my SD TV using ffshow for post processing. I'm using NV purevideo as mpeg2 decoder btw. In ffdshow I have sharpening (m-sharpen hq) and resize (to 1366) active - no noise reduction or postprocessing filters.</p><p>When I open MP the TV playback seems to be fine, but when I switch channels the picture stucks a few seconds and afterwards I have a slight video delay. My A/V receiver is connected with the optical SPDIF.</p><p></p><p>Is this a common issue when using post processing or can I somehow avoid the stutter/delay while switching channels? The CPU load is mostly around 60-80%, so there's a still slight headroom while watching TV with ffdshow enabled.</p><p>I've also tried the upscaling tutorial from the <a href="http://www.avsforum.com/avs-vb/showthread.php?t=719041" target="_blank">AVS-forums</a> mentioned in many threads here, but the results are even worse. I can only get a smooth playback with a queue of 5000ms but I can't force the audio to use a 5000ms delay as well. Seems like the audio is directly routet to SPDIF while the cpu is still post-processing the video signal. Furthermore MP thinks that there's no video signal since the first 5sec there's only a blank screen and stuttering audio. That makes me think that realtime Avisynth improvements aren't possible at all.</p><p></p><p>I know that resizing uses a lot of cpu ressources even on decent machines nowadays, but there must be a solution that runs almost realtime, looks better than SD TV and worse than supersampling (I know, hq realtime supersampling isn't possible at all even on quads).</p><p></p><p>Any suggestions are highly appreciated. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite5" alt=":confused:" title="Confused :confused:" loading="lazy" data-shortname=":confused:" /></p></blockquote><p></p>
[QUOTE="q_no, post: 380560, member: 88671"] [b]MediaPortal Version[/b]: 1.0 [b]MediaPortal Skin[/b]: blue wide [b]Windows Version[/b]: XP MCE SP3 [b]CPU Type[/b]: AMD 5050e [b]HDD[/b]: WD 250GB 2.5" [b]Memory[/b]: 2GB DDR2 667 [b]Motherboard[/b]: Asus M3N78-VM [b]Video Card[/b]: NV 8200onboard [b]Video Card Driver[/b]: ? [b]Sound Card[/b]: Via onboard [b]Sound Card AC3[/b]: Via onboard optical [b]Sound Card Driver[/b]: via 6.0.x [b]1. TV Card[/b]: leadtek winfast pvr 2000 [b]1. TV Card Type[/b]: analog [b]1. TV Card Driver[/b]: [b]MPEG2 Video Codec[/b]: NV pureVideo [b]MPEG2 Audio Codec[/b]: SPDIF [b]h.264 Video Codec[/b]: poverdvd 7/8 Hi, I'm trying to improve the image quality of my SD TV using ffshow for post processing. I'm using NV purevideo as mpeg2 decoder btw. In ffdshow I have sharpening (m-sharpen hq) and resize (to 1366) active - no noise reduction or postprocessing filters. When I open MP the TV playback seems to be fine, but when I switch channels the picture stucks a few seconds and afterwards I have a slight video delay. My A/V receiver is connected with the optical SPDIF. Is this a common issue when using post processing or can I somehow avoid the stutter/delay while switching channels? The CPU load is mostly around 60-80%, so there's a still slight headroom while watching TV with ffdshow enabled. I've also tried the upscaling tutorial from the [url=http://www.avsforum.com/avs-vb/showthread.php?t=719041]AVS-forums[/url] mentioned in many threads here, but the results are even worse. I can only get a smooth playback with a queue of 5000ms but I can't force the audio to use a 5000ms delay as well. Seems like the audio is directly routet to SPDIF while the cpu is still post-processing the video signal. Furthermore MP thinks that there's no video signal since the first 5sec there's only a blank screen and stuttering audio. That makes me think that realtime Avisynth improvements aren't possible at all. I know that resizing uses a lot of cpu ressources even on decent machines nowadays, but there must be a solution that runs almost realtime, looks better than SD TV and worse than supersampling (I know, hq realtime supersampling isn't possible at all even on quads). Any suggestions are highly appreciated. :S [/QUOTE]
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