Re: [PATCH v4 0/7] MR9979: mf/tests: Test SAR's IMFPresentationTimeSource interface.

[Brendan McGrath (＠redmcg)]

On Thu Jan 29 09:09:39 2026 +0000, Nikolay Sivov wrote:
> This is important to get right if we are going to advertise rate control
> support. If not, it's nice to get right for tests too.
> Sorry, I still haven't looked in to this. One thing I did recall seeing is ([src](https://learn.microsoft.com/en-us/windows/win32/medfound/streaming-audio-ren...)):
> If the playback rate is faster or slower than 1×, the SAR automatically adjusts the pitch.

This makes it sound like SAR itself does pitch scaling and therefore probably also defines those values. But I'll need to investigate further to be sure.

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https://gitlab.winehq.org/wine/wine/-/merge_requests/9979#note_128398