What does math.huge and -math.huge mean in your mpv.conf

[JulianLai]

I can't find them in the mpv manual. The github page of auto-profile doesn't mention about it, either.

[Argon-]

https://github.com/wm4/mpv-scripts/blob/master/auto-profiles.lua#L20

[JulianLai]

@Argon- It still doesn't explain what math.huge or -math.huge is.

[Argon-]

http://lua-users.org/wiki/MathLibraryTutorial

[JulianLai]

@Argon- Why do we put an infinity number there? If I put 0 in that block, it will apply the profile which shouldn't be applied.

It applied 2 profiles here:

[auto_profiles] Applying profile SD 
Playing: /home/laichiaheng/影片/電影&短片/八惡人/The Hateful Eight.mkv
[lavf] Using subtitle charset: utf-16le
 (+) Video --vid=1 (*) 'The.Hateful.Eight.2015.1080p.BluRay.x264.DTS-HD.MA.5.1-RARBG' (h264 1920x704 23.976fps)
     Video --vid=2 [P] 'cover_land.jpg' (mjpeg)
     Video --vid=3 [P] 'small_cover.jpg' (mjpeg)
     Video --vid=4 [P] 'small_cover_land.jpg' (mjpeg)
     Video --vid=5 [P] 'cover.jpg' (mjpeg)
 (+) Audio --aid=1 --alang=eng (*) 'The.Hateful.Eight.2015.1080p.BluRay.x264.DTS-HD.MA.5.1-RARBG' (dts 6ch 48000Hz)
     Subs  --sid=1 --slang=eng (*) 'English-SDH-PGS' (hdmv_pgs_subtitle)
     Subs  --sid=2 --slang=spa 'Spanish-PGS' (hdmv_pgs_subtitle)
 (+) Subs  --sid=3 '.The Hateful Eight.srt' (subrip) (external)
File tags:
 Title: RARBG.COM - The.Hateful.Eight.2015.1080p.BluRay.x264.DTS-HD.MA.5.1-RARBG
AO: [pulse] 48000Hz 5.1(side) 6ch s32
[auto_profiles] Applying profile HDravu 
Using hardware decoding (vaapi-copy).
VO: [opengl] 1920x704 nv12
[vo/opengl] after rendering: OpenGL error INVALID_OPERATION.
[vo/opengl] after rendering: OpenGL error INVALID_OPERATION.
[vo/opengl] after rendering: OpenGL error INVALID_OPERATION.
[vo/opengl] after rendering: OpenGL error INVALID_OPERATION.
AV: 00:00:00 / 02:47:44 (0%) A-V: -0.004 DS: 2.636/1
[osd/libass] fontselect: Using default font family: (Source Sans Pro, 400, 0) -> /usr/share/fonts/noto/NotoSansCJK-DemiLight.ttc, 3, NotoSansCJKtc-DemiLight
[osd/libass] fontselect: Using default font family: (Source Sans Pro, 700, 0) -> /usr/share/fonts/noto/NotoSansCJK-Black.ttc, 3, NotoSansCJKtc-Black
AV: 00:00:02 / 02:47:44 (0%) A-V:  0.003 DS: 2.552/1

My profile:

[UHD30]
profile-desc=cond:get('height', 0) > 1080 and get('container-fps', 0) >24
hwdec=vaapi

[UHD24]
profile-desc=cond:get('height', 0) > 1080 and get('container-fps', 0) <=24
interpolation
tscale=catmull_rom
hwdec=vaapi

[FHDoff]
profile-desc=cond:get('height', 0) <= 1080 and get('height', 0) >=800 and get('container-fps', 0) >= 59
profile=opengl-hq
hwdec=no

[FHDon]
profile-desc=cond:get('height', 0) <= 1080 and get('height', 0) >=800 and get('container-fps', 0) < 59
profile=opengl-hq
hwdec=vaapi-copy

[HDnormal]
profile-desc=cond:get('height', 0) <= 720 and get('height', 0) > 576 and get('container-fps', 0) >= 59
hwdec=vaapi
profile=opengl-hq

[HDravu]
profile-desc=cond:get('height', 0) <= 720 and get('height', 0) > 576 and get('container-fps', 0) < 59
hwdec=vaapi-copy
deband
opengl-shaders='/home/laichiaheng/.config/mpv/shaders/ravu-r3.hook' 

[SD]
profile-desc=cond:get('height', 0) <= 576
deband
hwdec=vaapi-copy
opengl-shaders='/home/laichiaheng/.config/mpv/shaders/ravu-r3.hook'

[Argon-]

Why? Well, because I want it to be that way. When you put a default value that will satisfy the condition, it instantly gets applied. When you do this, you also need an "inverse" profile with inverted conditions that can reverse what an applied profile did (see my 4K and 4K-inverted).

See your [SD] profile. It will always get activated as it's run before the file is loaded. It will set the ravu shader but this is never removed. Example: you open a file. Profiles are evaluated and your SD is true by default, so it gets applied and its options get set. Now the file is loaded, file information present and therefore profiles are re-evaluated. Let's assume we have a 4K file with 60fps. Consequently, [UHD30] gets applied. It changes hwdec but deband and opengl-shaders are still set.