#589 ffdshow does not bitstream DD+ audio to a/v receiver

[kryptonite5]

System Config:
Win7-64
GPU - GTX 560 Ti (270.61 drivers, HDMI audio)
Denon 1910 A/V Receiver

ffsdhow build: ffdshow_rev3832_20110429_xvidvideo-ru_x64-msvc2010
player: mpc-homecinema.1.5.2.3058.x64.msvc2010

There are many trailers with Dolby Digital Plus audio available at:
http://www.cyberlink.com/stat/events/enu/2011/Q2/dolby/index.jsp
http://www.cyberlink.com/event/dolby-digital-plus
http://www.demo-world.eu/trailers/redirect-high-definition.php?file=hd_dolby_digital_plus_lossless.rar

http://www.demo-world.eu/trailers/redirect-high-definition.php?file=hd_dolby_digital_plus_channel_check_lossless.part1.rar
http://www.demo-world.eu/trailers/redirect-high-definition.php?file=hd_dolby_digital_plus_channel_check_lossless.part2.rar

I've configured MPC-HC to let ffdshow bitsream the DD+ audio to receiver. But this does not work. Instead ffdshow ends up decoding the audio to lpcm (instead of bitstreaming).

Note: this issue does not happen with Dolby TrueHD, DTS HD-HR, DTS HD-MA, or regular DD5.1 / DTS tracks. All these tracks bistream perfectly to a/v receiver over HDMI. The issue is only specific to Dolby Digital Plus audio.

Also Note: DD-Plus audio bitsreams perfectly fine to a/v receiver through PowerDVD 10/11 without issues. So this must be a ffdshow specific issue.

Attaching screenshot of my settings.

[kryptonite5]

settings