Downloads bypass stream selection and reach play() as ready-made local
file streams, so audio mode never affected them. Apply the mode at that
choke point instead: swap a local video stream for the separately
downloaded audio track, or play a muxed file with the video track
disabled (vid set per-load in MPVClient, never toggled live). The
transform is bidirectional so stored audio-only queue/history entries
restore full video when the mode is off, and setAudioMode now reloads
downloaded content at the current position in both directions.
On macOS 27 beta, mpv's coreaudio AO fails to initialize (channel layout
set rejected with paramErr -50). The existing ao=coreaudio,avfoundation
fallback restored audio, but exposed an mpv bug: init() registers a HAL
hotplug listener (AudioObjectAddPropertyListener on the system object,
with the raw ao pointer as user data) before the step that fails, and
the coreaudio_error path never unregisters it. mpv then frees the ao
and falls back to avfoundation, leaving a dangling listener per
playback start. The next audio device change (AirPods connect,
sleep/wake device republish) invokes the listener with the freed
pointer and crashes with a use-after-free SIGSEGV on the
HALC_ProxyNotification Call Listener Queue (observed in build 262;
faulting address was reused "texture_" shader string memory).
Gate the AO order by OS version: on macOS 27+ use
avfoundation,coreaudio so the failing coreaudio init never runs; older
macOS keeps the native coreaudio first with avfoundation as fallback.
Update the read-only defaults mirror in MPV options settings to match.
macOS 27 beta's AUHAL rejects mpv's channel-layout property with paramErr
(-50), so the coreaudio AO fails to initialize and playback is silent.
Change the macOS ao option from "coreaudio" to "coreaudio,avfoundation"
so mpv self-heals: older macOS keeps using coreaudio unchanged, while the
beta drops to avfoundation (AVSampleBufferAudioRenderer) instead of playing
no sound.
With Atmos "Continuous Audio Output" enabled, some HDMI routes report
32 output channels, which mpv's audiounit AO cannot open - playback
stays silent while other (AVPlayer-based) apps work fine.
Update MPVKit to 0.41.0-n8.1.2, which builds mpv's avfoundation AO
(AVSampleBufferAudioRenderer, previously macOS-only) for iOS/tvOS
(mpvkit/MPVKit#73), and prefer it on tvOS via ao=avfoundation,audiounit
so mpv still falls back to audiounit if it fails to initialize. iOS and
macOS audio outputs are unchanged.
The MPVKit pin must be exactVersion: SwiftPM sorts the pre-release
identifier below 0.41.0, so a range starting at 0.41.0 never resolves
to it. Note this tag also bumps FFmpeg from 8.0 to n8.1.1.
Surface audio-delay (±10/±100 ms) and video-sync-mode controls behind an
"A/V Sync" navigation row in Advanced settings rather than inline, keeping the
Advanced page uncluttered. Audio delay applies live to the running MPV
instance; sync mode takes effect on next playback.
Lets the Apple TV switch its HDMI output to match the playing video's
frame rate and dynamic range via AVDisplayManager.preferredDisplayCriteria,
driven from MPV's container-fps and video-params/gamma. Two opt-in toggles
(default off) live under Playback → Display on tvOS; both are no-ops on
other platforms. Anchor an AVKit class symbol so the linker keeps AVKit
linked — Swift only autolinks AVFoundation here, and without AVKit the
UIWindow.avDisplayManager category isn't loaded at runtime.
Subscribe to mpv log messages and capture END_FILE error code/string so
load failures bubble up specific causes (HTTP 404/403, DNS failure,
demuxer errors) instead of a generic 10s timeout.
