[SubtitleEdit v5.0.0-beta15] Feature Request: Allow custom paths for mpv and ffmpeg in Settings

[benshgit]

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Description:

Currently, in Subtitle Edit v5.0.0-beta15, the software only provides options to download mpv and ffmpeg via:

• Options > Settings > Video player > Download mpv
• Options > Settings > Waveform/spectrogram > Download ffmpeg

There is no dedicated field to manually specify the path for an existing installation of mpv or ffmpeg.

Proposed Change:

I would like to suggest adding a "Path" setting in both the Video player and Waveform/spectrogram sections. This would allow users to:

1. Browse and select mpv.exe and ffmpeg.exe already present on their system.
2. Use portable versions or custom builds of these tools without having to re-download them through the app.

Motivation:

Many users already have ffmpeg or mpv installed globally or bundled with other software. Allowing a custom path would improve flexibility, save disk space, and provide better control for power users who prefer specific versions of these engines.

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[niksedk]

SE uses libmpv (not mpv.exe).

I guess it possible to do, but the danger is that some will try to use a too old/new version.

You can manually edit the Settings.json file already:
https://subtitleedit.github.io/subtitleedit/third-party-components.html