Do realtime mpv video parameter adjustments work yet in plex htpc?

Plex Players Desktop Players
1

hi all,

i tried plex htpc when it first came out but although the docs said i could send realtime parameter adjustments to mpv’s playing video (specifically, i wanted to adjust the video zoom level/parameter), everything i tried didn’t work :frowning:

did the plex devs fix this?

has anyone actually got realtime mpv adjustment commands to work (e.g. using autohotkey to map a keyboard key combo to adjust plex htpc’s mpv video zoom level in realtime)?

thx!

2

Will you please describe exactly what you’ve tried so we can help.

We support sending MPV arbitrary commands through our input mapping. Bind a key to to the structure below:

mpv:{command}: Sends a raw command into mpv. Example: mpv:set sub-scale=2.

See Input Mapping.md in the app support directory.

5

Hi,

Ok, so I finally figured out that you were probably talking about the ‘inputmaps.md’ file (please kindly remember that specific file name, thx).

I’ve now re-tried with the very latest Plex HTPC (1.3.1…) and Plex Media Server (on my Server PC)

And performed these steps:

  1. Copied keyboard.json from “C:\Users\sahud\AppData\Local\Plex HTPC\inputmaps\default” into “C:\Users\sahud\AppData\Local\Plex HTPC\inputmaps”

  2. Edited this line in that copied file "P": "play_pause",

  3. Made it read "P": "mpv:set video-zoom=-2", and saved it

  4. Launched Plex HTPC

Result = unfortunately doesn’t make the P keyboard key adjust the zoom level of video playing in Plex HTPC (actually it stops the P key from doing anything at all) :frowning:

Plz help! thx!!

6

Tested this and also ran into weird behavior. I mapped “G” to the example in inputmaps.md.

Jun 01, 2021 15:44:37.593 [0x100a62dc0] DEBUG - [InputManager] Input received: source: Keyboard keycode: G:3
Jun 01, 2021 15:44:37.593 [0x100a62dc0] DEBUG - [InputManager] Emit input action: ["G","mpv:set sub-scale=2"]
Jun 01, 2021 15:44:37.594 [0x100a62dc0] INFO - [InputManager] [InputConnector] Sending actions to UI: ["G","mpv:set sub-scale=2"]
Jun 01, 2021 15:44:45.340 [0x100a62dc0] ERROR - [MPVEngine/mpv] input: Command set: required argument value not set.
Jun 01, 2021 15:44:45.340 [0x100a62dc0] ERROR - [MPVEngine/mpv] input: Command was defined at main.
Jun 01, 2021 15:44:45.340 [0x100a62dc0] DEBUG - [InputManager] Input received: source: Keyboard keycode: G:1

Good chance we’ve got a bug fix to make.

7

This is the incorrect syntax. As you can see from the manual, you should do set attribute value and not set attribute=value.

1 Like
8

Thanks a lot Graham :). I’ll update our docs to avoid catching other users in the same trap.

1 Like
9

Made it read "P": "mpv:set video-zoom -2", NOW WORKS! THX!

Looks like you may have made another Plex Pass customer

and yes very important you update the docs! I’ve not been a Plex Pass customer for months because of this

10

also just figured out that the mpv “add” command also works

but please note that the mpv docs show a [ ] around the <value>, which you don’t use for add in Plex HTPC (doesn’t work with [ ] around)

from mpv docs regarding “add”:

add <name> [<value>]

Add the given value to the property or option. On overflow or underflow, clamp the property to the maximum. If <value> is omitted, assume 1.

11

Ah, the [] are used to indicate that value is optional.

12

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