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MediaPortal 1
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<blockquote data-quote="iancalderban" data-source="post: 386552" data-attributes="member: 85629"><p>Well I thought I would reply to my own thread with the (well at least a) solution.</p><p></p><p>It makes use of the fact that my sound card (onboard realtek, ATI 780G mobo) has DTS interactive, and my 5.1 receiver can handle DTS. Didn't even know what the DTS interactive thing on the PC did before this. I had to do some testing with MP in windowed mode and the ac3filter panel open next to it, to monitor what was happening and play with the options.</p><p></p><p>Here are the steps</p><p></p><p>MP config:</p><p>- set AC3filter as the audio codec in all relevant bits of mediaportal config (Videos, TV, DVD)</p><p>- also set the WMV 5.1 audio option in video player config</p><p></p><p>AC3 filter config :</p><p>- Disable use spdif . set output as 3/2 SW 5.1 channels . disable all spdif passthough.</p><p>Also in SPDIF tab, I disabled use AC3 encoder.Not sure if thats needed</p><p>output format of ac3filter should show as PCM16 3/2.1 (5.1)</p><p></p><p>Windows control-panel Sound config - set default output format to DTS interactive</p><p></p><p>In this configuration, the way I think its working is this:</p><p></p><p>mediaportal passes everything (except WMV 5.1) to AC3filter. Ac3filter decodes/transcodes all to 5.1 PCM, including stereo upmix if so desired. Ac3filter passes it to the sound card (ok, mobo chip) which encodes it to DTS 5.1 (the DTS interactive thing). DTS5.1 passes over SPDIF interface to my receiver and voila. WMV HD audio seems to work too, but without AC3filter kicking in - seems that windows is decoding it somehow to 5.1pcm and then the DTS interactive is doing the same job. I have listened to WMV-HD audio's with rear channel information, and its definately in the right place.</p><p></p><p>I now have volume control over all sources that I have tried so far from within mediaportal with this configuration. I don't need to play with gain in AC3filter. I have used the lipsync though (my setup seems to need about 50msec sound delay). </p><p></p><p>I have tested , surround 5.1 appears to work correctly in all the following (where it exists):</p><p>- DVD (video TS ripped folder) with DD 5.1 sound</p><p>- Recorded HDTV (BBCHD with D5.1 and DD2.0 sound)</p><p>- recorder SDTV (Pal TV with mpeg2 sound)</p><p>- MKV with DD 5.1 sound (downloaded movie)</p><p>- M2TS with DD5.1 sound (sony avc-hd camcorder files)</p><p>- WMV-HD with WMA-HD 5.1 sound (sony vegas render of camcorder files into movie)</p><p></p><p>Another benefit is that the output mode of the SPDIF on my PC, now never changes from DTS .</p><p>So I no longer get the annoying click , followed by loss of a couple seconds of audio whilst it figures out the new format, that my reciever would get hit with, when the pc was changing output modes between DD5.1, DD2.0 and plain stereo.</p><p></p><p>For a purist audiophile, some might complain about the decode-recode steps that are occuring. But for htpc convenience, I think its pretty good. Just listened to the audio on the shootout in the lift lobby in The Matrix - I think the surround decode is working close enough to a pure DD 5.1 pass through, that the other benefits outway any slight loss.</p><p></p><p>sofa sogood..</p><p></p><p>Ian</p></blockquote><p></p>
[QUOTE="iancalderban, post: 386552, member: 85629"] Well I thought I would reply to my own thread with the (well at least a) solution. It makes use of the fact that my sound card (onboard realtek, ATI 780G mobo) has DTS interactive, and my 5.1 receiver can handle DTS. Didn't even know what the DTS interactive thing on the PC did before this. I had to do some testing with MP in windowed mode and the ac3filter panel open next to it, to monitor what was happening and play with the options. Here are the steps MP config: - set AC3filter as the audio codec in all relevant bits of mediaportal config (Videos, TV, DVD) - also set the WMV 5.1 audio option in video player config AC3 filter config : - Disable use spdif . set output as 3/2 SW 5.1 channels . disable all spdif passthough. Also in SPDIF tab, I disabled use AC3 encoder.Not sure if thats needed output format of ac3filter should show as PCM16 3/2.1 (5.1) Windows control-panel Sound config - set default output format to DTS interactive In this configuration, the way I think its working is this: mediaportal passes everything (except WMV 5.1) to AC3filter. Ac3filter decodes/transcodes all to 5.1 PCM, including stereo upmix if so desired. Ac3filter passes it to the sound card (ok, mobo chip) which encodes it to DTS 5.1 (the DTS interactive thing). DTS5.1 passes over SPDIF interface to my receiver and voila. WMV HD audio seems to work too, but without AC3filter kicking in - seems that windows is decoding it somehow to 5.1pcm and then the DTS interactive is doing the same job. I have listened to WMV-HD audio's with rear channel information, and its definately in the right place. I now have volume control over all sources that I have tried so far from within mediaportal with this configuration. I don't need to play with gain in AC3filter. I have used the lipsync though (my setup seems to need about 50msec sound delay). I have tested , surround 5.1 appears to work correctly in all the following (where it exists): - DVD (video TS ripped folder) with DD 5.1 sound - Recorded HDTV (BBCHD with D5.1 and DD2.0 sound) - recorder SDTV (Pal TV with mpeg2 sound) - MKV with DD 5.1 sound (downloaded movie) - M2TS with DD5.1 sound (sony avc-hd camcorder files) - WMV-HD with WMA-HD 5.1 sound (sony vegas render of camcorder files into movie) Another benefit is that the output mode of the SPDIF on my PC, now never changes from DTS . So I no longer get the annoying click , followed by loss of a couple seconds of audio whilst it figures out the new format, that my reciever would get hit with, when the pc was changing output modes between DD5.1, DD2.0 and plain stereo. For a purist audiophile, some might complain about the decode-recode steps that are occuring. But for htpc convenience, I think its pretty good. Just listened to the audio on the shootout in the lift lobby in The Matrix - I think the surround decode is working close enough to a pure DD 5.1 pass through, that the other benefits outway any slight loss. sofa sogood.. Ian [/QUOTE]
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