Display long URLs in a user-friendly and informative way

Current behavior (mpv 0.35 Homebrew bottle)

When running mpv with very long URLs (~1000 characters), eg.

$ mpv VIDEO --audio-file=AUDIO

1. The OSD media title (lower left corner) seems to display the center of VIDEO, usually a smattering of URL random parameters, giving no valuable information to the user.

< >   &yoi=5831043&mum=55166747023&wax=23&pew=65300&alf=420157670777596&yes=4558266472944516&   Cache: 42s

2. The terminal output gets similarly flooded when AUDIO is a long URL:

(+) Video --vid=1 (*) (h264 1280x720 59.940fps)
(+) Audio --aid=1 (*) 'video?&awa=68258933661986&why=68426832960&zat=6
72582922041153&tck=50&jot=588899545351572&ber=91596529005&sla=55084828
65866614&wey=556609493395&car=5194415113869775259&rog=7290082781833467
616&nay=8721&tee=4806186815&vat=6201239513069251&soh=21339533256602356
54&mho=245809568103&mud=324292414007468734&eon=836933562&cat=3&gyp=148
386989&pur=56319700&gip=4716300145289650822&ubi=864472250798&eel=687&b
ub=53111788629099&wis=63591362568&lis=918336621218658&gig=177395&dey=8
350714&mal=325153491622480&amy=8455369206191236

Expected behavior of the wanted feature

Suggest to do like macOS Finder does for long filenames, ie. show START + DOTS + END. The rationale for this version is in case the end of the URL is a filename/extension, which is valuable information.

1. < >   https://www.example.com/video/play?id=1234567& ... autoplay=false&ext=mkv   Cache: 42s
2. (+) Audio --aid=1 (*) 'https://www.example.com/audio/play?id=1234567& ... format=aac

Alternative behavior of the wanted feature

Alternatively, just show START + DOTS for as long as there is room on the single line available. The rationale for this version is the idea/hope that the most important information comes first in the URL. Plus it might be easier to program.

1. < >   https://www.example.com/video/play?id=1234567&autoplay=false&subtitles=true& ...   Cache: 42s
2. (+) Audio --aid=1 (*) 'https://www.example.com/audio/play?id=1234567&format=aac ...

Log file

N/A

No source files or tests are named. Start by locating the code that formats long URLs for the OSD media title and terminal audio line, then compare both paths against the examples in the issue. Done means long URLs no longer flood either display and show the beginning plus a useful ending, or the specified beginning-only alternative.