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[dmance]

I have a .WV file with a DSD256 compressed. The audio is from a video. It plays perfectly as a .WV file to a DSD DAC using DoP. Audio Settings are correct: DSP & output format is unchecked.  Bitstreaming: DSD (Yes). Audio Path is correct.
I mux the .WV and original video into an MKV. I verify the muxed audio track is still a DSD Wavpack.

When I try to play the MKV, nothing I can do prevents MC from forcing the audio to be converted to PCM (176.4kHz) ...i notice the Output Format sample rate table has been automatically changed and audio path indicates the DSD256 stream is being converted to PCM.

How can I force the MKV's WavPack audio track (DSD256) to remain unaffected and just passed to the DSD DAC?
Thanks

[Awesome Donkey]

Don't think DSD audio muxed with a video is supported, simply because DSD with video isn't a thing.

[Hendrik]

Awesome Donkey is correct, this is not a supported scenario for bitstreaming, and unlikely to change due to the way the video engine works, and that it is essentially double-packed (DSD in Wavpack in MKV).

[dmance]

Can this work with ordinary DSF muxed into a MKV?

[Awesome Donkey]

No.

There's a lot of complexities involved when considering this video muxed with a DSD track idea. For example, you can't bitstream DSD over HDMI from any sort of computer like a PC, Mac, Raspberry Pi, etc. as no GPU or graphics output supports DSD so you'd be forced to somehow split the video and audio outputs. You'd have to use HDMI/DP via whatever GPU it uses for video and then some separate audio output (e.g. USB DAC) that supports DSD bitstreaming. The problem with this is you're very likely going to experience issues during playback, especially issues with sync since there's no way to sync it.

Just seems extremely complicated for no legit reason or actual gain over standards like Atmos, DTS, TrueHD and even normal PCM. You could attempt to do this yourself manually using separate apps, separate video and audio tracks and separate audio and video outputs but you're going to have a hard time keeping it in sync, if at all. Just seems pointless to even do as you'd have to convert all audio from whatever format to DSD, which because it has go through PCM in the middle is always a lossy conversion, the end result gives no tangible benefit, IMO.

That and again like I said above there's no actual video with DSD format or any video with DSD releases so this idea is a complete non-starter and simply not possible. In fact not being able to bitstream DSD over HDMI from any sort of computer alone makes this idea a non-starter, as you'd always be forced to split the audio and video and use separate outputs.