mpv not opening YouTube links through XDG protocol handler

[isaacnonato]

mpv Information

mpv 0.39.0 Copyright © 2000-2024 mpv/MPlayer/mplayer2 projects
 built on Dec 24 2024 20:11:41
libplacebo version: v6.338.2
FFmpeg version: 6.1.2
FFmpeg library versions:
   libavcodec      60.31.102
   libavdevice     60.3.100
   libavfilter     9.12.100
   libavformat     60.16.100
   libavutil       58.29.100
   libswresample   4.12.100
   libswscale      7.5.100

Other Information

- Linux version: Void Linux
- Kernel Version: 6.12.11_1
- GPU Model: AMD RX 6600
- Mesa/GPU Driver Version: Mesa 24.2.8
- Window Manager and Version: i3 4.24
- Source of mpv: XBPS repositories

Reproduction Steps

• Set up an XDG protocol handler for URLs starting with mpv:// (or anything else)
• On the Exec field, put open_mpv %u where open_mpv is a script that strips the first x characters from the passed URL (since the full URL with mpv:// is passed to XDG), in my case:

#!/bin/bash

full_url="$1"
yt_url="${full_url:6}"
mpv --gpu-debug --log-file=/tmp/out.txt "$yt_url"

• Open a YouTube link with mpv:// on the web browser

Expected Behavior

mpv should treat the URL as a YouTube link and start playing the YouTube video.

Actual Behavior

mpv treats the URL as the name of a normal file and instead tries to find the file at the home directory, failing to do so.

Log File

out.txt

Sample Files

No response

I carefully read all instruction and confirm that I did the following:

• I tested with the latest mpv version to validate that the issue is not already fixed.
• I provided all required information including system and mpv version.
• I produced the log file with the exact same set of files, parameters, and conditions used in "Reproduction Steps", with the addition of --log-file=output.txt.
• I produced the log file while the behaviors described in "Actual Behavior" were actively observed.
• I attached the full, untruncated log file.
• I attached the backtrace in the case of a crash.

[Dudemanguy]

mpv://

It's not expected to work. Would be fixed by #15898

[kasper93]

For youtube you can register ytdl:// and it should work fine.