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MediaPortal 1
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Codecs, External Players
DTS-MA to DTS with ffdshow?
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<blockquote data-quote="nd4spdbh" data-source="post: 709525" data-attributes="member: 59099"><p>Alrighty guys heres my lil tutorial.</p><p></p><p>The way SAF4 and 5 did it was do re-encode every audio source into dolby digital, which 1. i dont like extra processing of any audio or video source when its already perfectly fine in its first form. and 2. the encode from dts to dolby digital played with speaker levels... which pissed me off, and subsequently made me try and figure this out. which i did. </p><p></p><p>I use the following for codecs.</p><p></p><p></p><ul> <li data-xf-list-type="ul">Core AVC 2.0.0.0 (although you can use what ever video codec you like)</li> <li data-xf-list-type="ul"><a href="http://ffdshow-tryout.sourceforge.net/" target="_blank">FFDSHOW TRYOUT BETA 7</a> - this is the magical ffdshow that does proper dts core extraction from dts-hd and dts-ma.</li> <li data-xf-list-type="ul">Hali media splitter</li> </ul><p></p><p>The reason i use coreavc is IMO, its by far the best as far as being efficient... plus the ability to use nvidia cuda acceleration on ANY video file that uses coreavc, not just properly encoded dxva files.... the latest ffdshow dxva video decoder is damn good and just about the same as efficiency as CoreAVC when playing dxva stuff, BUT, with the ffdshow dxva video decoder, you also have to install the later generation of FFDshow audio decoder.... and this seems to be where the problem arises. </p><p></p><p>On the later versions of FFDshow audio codec, where you have the actual ability to passthrough dts-hd / dolby true hd... when you try and pass through a dts-hd / ma source it causes the crash or inability to play the video we are experiencing. So after literally days of trying stuff i finally went counter intuitive and used ffdshow tryout beta 7, which is a build from 2009! ... and to my amazement EVERYTHING WORKED IN PERFECT HARMONY! no more studdering due to audio video sync, and the ability to playback dts-hd/ma sources and have the dts core PROPERLY extracted and passed through to the receiver via SPDIF.</p><p></p><p>SO onto the most important part... the setup.</p><p></p><p>FIRST, set the spdif connection your using in your control panel as the default audio connection.</p><p></p><p>Then just take a look at the below screen shots, and make sure you have them setup the same, changing where needed... ie if your using a different video codec.</p><p></p><p>Note - because you have your spdif connection set as default in windows, u will notice i have the default direct sound device checked in mediaportal and in ffdshow audio, this seemed to work the best. </p><p></p><p>Note - literally the only thing i changed on the ffdshow audio codec from the stock form is the stuff in the output section... note that i DO have AC3 spdif encode mode enabled... what this does is if i have a video with a 6ch AAC audio track, which cant be passed through to my receiver, it will auto encode it to AC3... this conversion from AAC to AC3 works well, and doesn't play with levels.... you can also check the mixer tab, and play with settings in there if you want to stereo upmix stuff to a 5.1 ac3 stream.... i have it unchecked as my receiver does just fine if i wanna do 7ch stereo up mix.</p><p></p><p>Thats all i can think of for now, feel free to ask any and all question, ill try and get back to it asap!</p></blockquote><p></p>
[QUOTE="nd4spdbh, post: 709525, member: 59099"] Alrighty guys heres my lil tutorial. The way SAF4 and 5 did it was do re-encode every audio source into dolby digital, which 1. i dont like extra processing of any audio or video source when its already perfectly fine in its first form. and 2. the encode from dts to dolby digital played with speaker levels... which pissed me off, and subsequently made me try and figure this out. which i did. I use the following for codecs. [LIST] [*]Core AVC 2.0.0.0 (although you can use what ever video codec you like) [*][URL="http://ffdshow-tryout.sourceforge.net/"]FFDSHOW TRYOUT BETA 7[/URL] - this is the magical ffdshow that does proper dts core extraction from dts-hd and dts-ma. [*]Hali media splitter [/LIST] The reason i use coreavc is IMO, its by far the best as far as being efficient... plus the ability to use nvidia cuda acceleration on ANY video file that uses coreavc, not just properly encoded dxva files.... the latest ffdshow dxva video decoder is damn good and just about the same as efficiency as CoreAVC when playing dxva stuff, BUT, with the ffdshow dxva video decoder, you also have to install the later generation of FFDshow audio decoder.... and this seems to be where the problem arises. On the later versions of FFDshow audio codec, where you have the actual ability to passthrough dts-hd / dolby true hd... when you try and pass through a dts-hd / ma source it causes the crash or inability to play the video we are experiencing. So after literally days of trying stuff i finally went counter intuitive and used ffdshow tryout beta 7, which is a build from 2009! ... and to my amazement EVERYTHING WORKED IN PERFECT HARMONY! no more studdering due to audio video sync, and the ability to playback dts-hd/ma sources and have the dts core PROPERLY extracted and passed through to the receiver via SPDIF. SO onto the most important part... the setup. FIRST, set the spdif connection your using in your control panel as the default audio connection. Then just take a look at the below screen shots, and make sure you have them setup the same, changing where needed... ie if your using a different video codec. Note - because you have your spdif connection set as default in windows, u will notice i have the default direct sound device checked in mediaportal and in ffdshow audio, this seemed to work the best. Note - literally the only thing i changed on the ffdshow audio codec from the stock form is the stuff in the output section... note that i DO have AC3 spdif encode mode enabled... what this does is if i have a video with a 6ch AAC audio track, which cant be passed through to my receiver, it will auto encode it to AC3... this conversion from AAC to AC3 works well, and doesn't play with levels.... you can also check the mixer tab, and play with settings in there if you want to stereo upmix stuff to a 5.1 ac3 stream.... i have it unchecked as my receiver does just fine if i wanna do 7ch stereo up mix. Thats all i can think of for now, feel free to ask any and all question, ill try and get back to it asap! [/QUOTE]
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