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SAF v5.02 *final* (based on FFDShow DXVA decoder)
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<blockquote data-quote="Larzon" data-source="post: 646738" data-attributes="member: 101335"><p><strong>Re: SAF v5.00 experimental (based on FFDShow DXVA decoder)</strong></p><p></p><p></p><p></p><p>Update:</p><p></p><p>I discovered the main culprit was an NVIDIA setting for the GeForce 9400 GPU. A few weeks prior I had enabled Noise Reduction in the GPU while trying to improve DVD playback. (That was before I had heard of SAF/FFDSHOW).</p><p></p><p>The good news: After disabling Noise Reduction in NVIDIA Control Panel, MediaPortal/FFDSHOW can pass the job of deinterlacing (1080i content) to the GPU, and both live and recorded TV <em>look</em> fine with zero dropped frames. Curiously, rendering the same TS file in GraphStudio causes occasional stuttering; I think the difference may arise from the type of deinterlacing chosen by the host application. This does reveal, I think, that the 9400 is just barely able to do the job when the deinterlacing method is not too demanding.</p><p></p><p>Now, the bad news: Although FFDSHOW-based playback of 1080i in MediaPortal <em>looks</em> good and has zero dropped frames, there is an audio synchronization problem. This occurs with both live and recorded TV in <em>MediaPortal only</em>. (GraphStudio playback of 1080i does not have this problem.) It seems that the audio delay occurs with a momentary glitch at the beginning of play, and the delay stays constant from then on. This glitch also happens upon changing the channel. Sometimes skipping back and forth makes the delay disappear.</p><p></p><p>This FFDSHOW audio synchronization problem also occurs when I configure FFDSHOW to perform the job of deinterlacing (i.e. using CPU). Again, there are zero dropped frames in MediaPortal (monitored using Shift+1), but a constant video lag is introduced at beginning of play.</p><p></p><p>Well, I'm throwing in the towel on getting FFDSHOW to play TS files in MediaPortal. This mystery will have to remain unsolved. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite5" alt=":confused:" title="Confused :confused:" loading="lazy" data-shortname=":confused:" /> I realize this is a MediaPortal issue. But in MediaPortal the MPC (Gabest) codec (which has to be re-registered after installing SAF) produces perfect playback of live and recorded TV, so I'll stick with the native codec.</p><p></p><p>That said, I still want to applaud the great job FFDSHOW does with DVD playback. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite8" alt=":D" title="Big Grin :D" loading="lazy" data-shortname=":D" /></p></blockquote><p></p>
[QUOTE="Larzon, post: 646738, member: 101335"] [b]Re: SAF v5.00 experimental (based on FFDShow DXVA decoder)[/b] Update: I discovered the main culprit was an NVIDIA setting for the GeForce 9400 GPU. A few weeks prior I had enabled Noise Reduction in the GPU while trying to improve DVD playback. (That was before I had heard of SAF/FFDSHOW). The good news: After disabling Noise Reduction in NVIDIA Control Panel, MediaPortal/FFDSHOW can pass the job of deinterlacing (1080i content) to the GPU, and both live and recorded TV [I]look[/I] fine with zero dropped frames. Curiously, rendering the same TS file in GraphStudio causes occasional stuttering; I think the difference may arise from the type of deinterlacing chosen by the host application. This does reveal, I think, that the 9400 is just barely able to do the job when the deinterlacing method is not too demanding. Now, the bad news: Although FFDSHOW-based playback of 1080i in MediaPortal [I]looks[/I] good and has zero dropped frames, there is an audio synchronization problem. This occurs with both live and recorded TV in [I]MediaPortal only[/I]. (GraphStudio playback of 1080i does not have this problem.) It seems that the audio delay occurs with a momentary glitch at the beginning of play, and the delay stays constant from then on. This glitch also happens upon changing the channel. Sometimes skipping back and forth makes the delay disappear. This FFDSHOW audio synchronization problem also occurs when I configure FFDSHOW to perform the job of deinterlacing (i.e. using CPU). Again, there are zero dropped frames in MediaPortal (monitored using Shift+1), but a constant video lag is introduced at beginning of play. Well, I'm throwing in the towel on getting FFDSHOW to play TS files in MediaPortal. This mystery will have to remain unsolved. :S I realize this is a MediaPortal issue. But in MediaPortal the MPC (Gabest) codec (which has to be re-registered after installing SAF) produces perfect playback of live and recorded TV, so I'll stick with the native codec. That said, I still want to applaud the great job FFDSHOW does with DVD playback. :D [/QUOTE]
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