Tried to use just the LAV

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November 22, 2011 at 11:45 pm #6517
RehabMan

    Tried to use just the LAV splitter.  As stated above, I got it to work with DirectVobSub, but unfortunately, could not get HD audio bitstreaming.  For some reason everything was being down mixed to stereo LPCM when played from WMC or WMP.  Strangely, if I loaded the file in graphstudio and ran the graph, it did correctly bitstream.  WMC and WMP must be doing something funny with the graph after its built… something that kills bitstreaming using combination of LAV splitter + ffdshow audio.

    Now trying LAV audio as it seems to support HDMI audio bitstreaming…  We’ll see.

    I also tried recoding the video stream as h264 (using Handbrake, then remux w/ mkvmerge), but the same audio drift was apparent.  Pretty amazing though… I think that without an A/B test no PQ degradation could be noticed… and h264 seems to be better accelerated than is VC1 on Sandy Bridge (at least HD 2k in Core i3-2100T).