YouTube marks an AI-dubbed audio track DEFAULT=YES on some videos and
AVFoundation obeys the manifest, so a synthetic voice played over the
original. The app now always serves its own rewritten master playlist —
previously only when a quality cap was set — and marks the track whose
language matches the video's own as the default, falling back to
whichever track does not describe itself as dubbed. Every track is still
listed, so switching remains possible.
Adds an audio and subtitle picker to the transport bar, reading the
video element's audioTracks and textTracks. Subtitles start off for the
same reason the dub does: nothing translated is forced on.
Also collapses the player's own title-bar strip in window fullscreen,
which was leaving a stray bar above the player header.
Every control in the app now shares one height (CONTROL_H), with width
still growing to fit its label. The player transport is larger, Back is
an icon, and the footer buttons match the prev/next size.
Player chrome — transport and edge arrows — fades after 2.6s of
inactivity and never hides while paused.
The title-bar strip collapses in macOS window fullscreen, where the
traffic lights are gone and it was just a blank white bar.
Streaming quality is now selectable alongside download quality. A cap is
applied by rewriting YouTube's HLS master playlist down to the best
variant at or below the chosen height, keeping its audio group. That
playlist is served from a small loopback HTTP server: Safari's native
HLS is backed by AVFoundation, which cannot read blob: or custom-scheme
URLs, so a Blob URL silently fails to play.
Settings closes with an icon button and its selects match the shared
control height.
Replace WebKit's native video controls with our own. WebKit puts
fullscreen, Picture-in-Picture and volume as overlay buttons in the
video's top corners with no way to move them; owning the bar is the only
way to get every control into one strip along the bottom. Right-click on
the player is suppressed — its menu acted on a video the app does not
control.
One spinner now covers both waits: resolving the stream URL and
buffering it. It no longer sticks after a resume-seek, which fires
'waiting' after 'playing'.
Also: Open on YouTube and a new Download are real buttons in the player;
refresh is a compact icon; Settings is a cog; the subscription sidebar
collapses and reappears on a left-edge hover; the feed auto-refreshes
every 10 minutes while online, skipped while the player is open; the
title-bar strip takes the panel colour, since it sits above panels
rather than the page; and downloaded-only, hide-Shorts and the sidebar
state are remembered between launches.
vincent