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MediaPortal 1
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Bad HDTV performance despite hardware acceleration
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<blockquote data-quote="Spooky" data-source="post: 274225" data-attributes="member: 11539"><p><strong>TV-Server Version</strong>: 1.0.0 RC1 (usually latest SVN)</p><p><strong>MediaPortal Version</strong>: 1.0.0 RC1 (usually latest SVN)</p><p><strong>MediaPortal Skin</strong>: BlueTwo wide</p><p><strong>Windows Version</strong>: Win XP SP2</p><p><strong>CPU Type</strong>: AMD A64 3200+</p><p><strong>HDD</strong>: Seagate DB35 200GB</p><p><strong>Memory</strong>: Kingston ValueRAM 2x512 MB</p><p><strong>Motherboard</strong>: Shuttle FX83</p><p><strong>Video Card</strong>: Radeon HD 2400 Pro AGP</p><p><strong>Video Card Driver</strong>: Catalyst 8.4</p><p><strong>Sound Card</strong>: </p><p><strong>Sound Card AC3</strong>: </p><p><strong>Sound Card Driver</strong>: </p><p><strong>1. TV Card</strong>: digital everywhere FloppyDTV S2</p><p><strong>1. TV Card Type</strong>: DVB-S2</p><p><strong>1. TV Card Driver</strong>: 4.5.N</p><p><strong>MPEG2 Video Codec</strong>: Cyberlink Video/SP Decoder (PDVD8)</p><p><strong>MPEG2 Audio Codec</strong>: Cyberlink Audio Decoder (PDVD8)</p><p><strong>h.264 Video Codec</strong>: Cyberlink H.264/AVC Decoder (PDVD8)</p><p><strong>Satelite/CableTV Provider</strong>: Astra 19.2°E</p><p><strong>HTPC Case</strong>: Shuttle SK83G</p><p><strong>TV</strong>: Panasonic PT-AX100E, <em>1280x720</em></p><p><strong>TV - HTPC Connection</strong>: VGA</p><p></p><p><em>Note: I use a server <-> client setup. The TV Server runs on a different machine.</em></p><p></p><p>After finally having the opportunity of viewing ORF 1 HD on our HTPC and after getting Hardware Acceleration to work flawlessly (or so I thought), I noticed that the performance when viewing HD channels isn't that good after all. At least not on ORF 1 HD.</p><p></p><p>Most of the time when viewing ORF 1 HD I get <strong>~33 FPS</strong> (according to the Shift-1 overlay). When this is the case, everything seems rather 'jerky', not smooth at all, especially when there are fast or sudden movements involved. On Astra HD+ however, I get <strong>~50 FPS</strong> most of the time and almost everything is fine there. Recently I noticed, that I can get 50 FPS on ORF 1 HD too, when I switch back and forth between channels or switch the TV on and off. So maybe there are some issues with the graph being build up.</p><p></p><p>I attached two logs. In the first one, I started with ORF 1 HD: 33 FPS, then switched to Astra HD+: 50 FPS, then switched back to ORF 1 HD: 50 FPS. <span style="font-size: 9px"><em>Note: I used the PowerDVD 7.3 codec in this test, just to see if it makes any difference.</em></span>. In the second test, I switched back and forth between ORF 1 HD and Astra HD+, always with 33 FPS on ORF 1 HD and 50 FPS on Astra HD+. However, when I turned the TV off and then on again, ORF 1 HD got 50 FPS... well at least the first 30 seconds or so. Then suddenly it dropped back to 33 FPS.</p><p></p><p></p><p>I experienced <strong>the same issue</strong> on my workstation (C2D E6600@3.2GHz, 2GB RAM, Radeon x1950 Pro, 1680x1050). When using the PowerDVD 8 codec with Hardware acceleration. I mostly got 33 FPS on ORF 1 HD and 50 FPS on Astra HD+. Interestingly, with the CoreAVC codec I always get 50 FPS on ORF 1 HD and 25 FPS on Astra HD+ (I guess the "worse" performance on Astra HD+ is due to it being 1080i, contrary to 720p on ORF 1 HD). <strong>However</strong> even with only 25 FPS on Astra HD+ (with CoreAVC), <em>it never looks 'jerky' or anything, it's always smooth</em>.</p><p></p><p></p><p>I know that getting smooth HDTV on a "computer" display (like our beamer) is somewhat troublesome, but there has to be some issue here somewhere (not necessarily in MediaPortal). It doesn't make much sense to me at least.</p><p></p><p></p><p>// I just found out that ORF 1 HD sends in 720p<strong>50</strong>, so no wonder it's not smooth with 33 FPS</p></blockquote><p></p>
[QUOTE="Spooky, post: 274225, member: 11539"] [b]TV-Server Version[/b]: 1.0.0 RC1 (usually latest SVN) [b]MediaPortal Version[/b]: 1.0.0 RC1 (usually latest SVN) [b]MediaPortal Skin[/b]: BlueTwo wide [b]Windows Version[/b]: Win XP SP2 [b]CPU Type[/b]: AMD A64 3200+ [b]HDD[/b]: Seagate DB35 200GB [b]Memory[/b]: Kingston ValueRAM 2x512 MB [b]Motherboard[/b]: Shuttle FX83 [b]Video Card[/b]: Radeon HD 2400 Pro AGP [b]Video Card Driver[/b]: Catalyst 8.4 [b]Sound Card[/b]: [b]Sound Card AC3[/b]: [b]Sound Card Driver[/b]: [b]1. TV Card[/b]: digital everywhere FloppyDTV S2 [b]1. TV Card Type[/b]: DVB-S2 [b]1. TV Card Driver[/b]: 4.5.N [b]MPEG2 Video Codec[/b]: Cyberlink Video/SP Decoder (PDVD8) [b]MPEG2 Audio Codec[/b]: Cyberlink Audio Decoder (PDVD8) [b]h.264 Video Codec[/b]: Cyberlink H.264/AVC Decoder (PDVD8) [b]Satelite/CableTV Provider[/b]: Astra 19.2°E [b]HTPC Case[/b]: Shuttle SK83G [b]TV[/b]: Panasonic PT-AX100E, [i]1280x720[/i] [b]TV - HTPC Connection[/b]: VGA [i]Note: I use a server <-> client setup. The TV Server runs on a different machine.[/i] After finally having the opportunity of viewing ORF 1 HD on our HTPC and after getting Hardware Acceleration to work flawlessly (or so I thought), I noticed that the performance when viewing HD channels isn't that good after all. At least not on ORF 1 HD. Most of the time when viewing ORF 1 HD I get [b]~33 FPS[/b] (according to the Shift-1 overlay). When this is the case, everything seems rather 'jerky', not smooth at all, especially when there are fast or sudden movements involved. On Astra HD+ however, I get [b]~50 FPS[/b] most of the time and almost everything is fine there. Recently I noticed, that I can get 50 FPS on ORF 1 HD too, when I switch back and forth between channels or switch the TV on and off. So maybe there are some issues with the graph being build up. I attached two logs. In the first one, I started with ORF 1 HD: 33 FPS, then switched to Astra HD+: 50 FPS, then switched back to ORF 1 HD: 50 FPS. [size=1][i]Note: I used the PowerDVD 7.3 codec in this test, just to see if it makes any difference.[/i][/size]. In the second test, I switched back and forth between ORF 1 HD and Astra HD+, always with 33 FPS on ORF 1 HD and 50 FPS on Astra HD+. However, when I turned the TV off and then on again, ORF 1 HD got 50 FPS... well at least the first 30 seconds or so. Then suddenly it dropped back to 33 FPS. I experienced [b]the same issue[/b] on my workstation (C2D E6600@3.2GHz, 2GB RAM, Radeon x1950 Pro, 1680x1050). When using the PowerDVD 8 codec with Hardware acceleration. I mostly got 33 FPS on ORF 1 HD and 50 FPS on Astra HD+. Interestingly, with the CoreAVC codec I always get 50 FPS on ORF 1 HD and 25 FPS on Astra HD+ (I guess the "worse" performance on Astra HD+ is due to it being 1080i, contrary to 720p on ORF 1 HD). [b]However[/b] even with only 25 FPS on Astra HD+ (with CoreAVC), [i]it never looks 'jerky' or anything, it's always smooth[/i]. I know that getting smooth HDTV on a "computer" display (like our beamer) is somewhat troublesome, but there has to be some issue here somewhere (not necessarily in MediaPortal). It doesn't make much sense to me at least. // I just found out that ORF 1 HD sends in 720p[b]50[/b], so no wonder it's not smooth with 33 FPS [/QUOTE]
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