mpv requires an update to master due to ffmpeg changes

[jet082]

Related to #2568.

MPV and ffmpeg build just fine. However, as per mpv-player/mpv#13662, the current build of mpv does not support audio output due to an incompatibility that 0.36 has with current ffmpeg. The error you get is as documented in the issue, but is also presented below:

PS D:\Videos> mpv '.\test.mkv'
 (+) Video --vid=1 (*) (h264 1436x1080 23.976fps)
 (+) Audio --aid=1 --alang=jpn (*) 'Japanese' (flac 1ch 48000Hz)
     Subs  --sid=1 --slang=eng (*) (f) 'English Forced' (subrip)
 (+) Subs  --sid=2 --slang=eng 'English Forced PGS' (hdmv_pgs_subtitle)
Using hardware decoding (d3d11va-copy).
AO: [wasapi] 192000Hz mono 1ch float
[ffmpeg] SWR: Input channel layout "" is invalid or unsupported.
[swresample] Cannot open Libavresample context.
[swresample] libswresample failed to initialize.
Cannot convert decoder/filter output to any format supported by the output.
VO: [gpu] 1436x1080 nv12
Audio: no audio
V: 00:00:00 / 01:27:58 (0%)
[osd/libass] fontselect: Using default font family: (mpv-osd-symbols, 400, 0) -> ArialMT, 0, ArialMT
V: 00:00:00 / 01:27:58 (0%)

Moving to master rather than 0.36.0 seems the best long-term solution. In the very short term you can add do_patch "https://github.com/mpv-player/mpv/commit/f31eb9e4071093134d675678d29e8f1673d39d18.patch" am to the media-suite_compile.sh and it does fix the problem.