Spritz 2.0.0-rc.16

Spritz 2.0.0-rc.16 (pre-release)

A Mac media player (libmpv) that casts to your TV, plus an optional Spritz Receiver app for LG webOS TVs.
This is a release candidate, tested by one person on one Mac and one TV. Please read the caveats.

Download

• Mac app — Spritz-2.0.0-rc.16-arm64.dmg (Apple Silicon, macOS 11+). Open it and drag Spritz to Applications.
  Builds are ad hoc signed and not notarized, so macOS blocks the first launch. Either run
  xattr -dr com.apple.quarantine /Applications/Spritz.app in Terminal, or on macOS 15 and later try to
  open it and then use System Settings → Privacy & Security → Open Anyway (on macOS 11 to 14, right-click →
  Open works too). Full steps: README → Install.
• TV app — com.spritz.receiver_0.4.0_all.ipk, also inside the Mac app (Devices → Show the TV installer
  in Finder). Installing it needs LG Developer Mode on the TV and the webOS CLI; developer sessions
  expire. Details in the README under Spritz Receiver for LG webOS. Devices now flags a TV still on 0.3.x.
• Spritz-2.0.0-rc.16-corresponding-source.tar — the source of the GPL and LGPL components (see Source and licences).
• SHA256SUMS — verify your downloads.

What was tested

On an LG 55NANO80T6A (webOS 24, firmware 33.31.75), with packaged candidate builds:

• AirPlay, local file: connecting from the cast menu, playback on the TV, seeking, subtitle text shown on the
  TV, the TV dropping the connection (Spritz resumes on the Mac at the TV's position), Stop (resumes on the Mac
  at the right position), and reconnecting after a drop, after Stop and after a new file.
• AirPlay, torrent still downloading: playback on the TV, then Stop — the Mac resumed at the right position
  and the download carried on.
• AirPlay start-up stalls: 19 hand-offs measured to find the cause, then 3 hand-offs at positions that had
  always stalled, which all played with this release.
• Spritz Receiver: the new time display, launcher icon and launch screen, seen on the TV; a cast started at a
  position that used to freeze now plays, and Return to Mac returns playback with one click.
• Google Cast and DLNA were not re-tested in this round; their results from rc.15 stand.

New since rc.15

• AirPlay to the LG is reliable. It used to connect only the first time per launch; after a dropped
  connection, Stop or a new file, the TV connected but nothing played. Fixed.
• No more AirPlay start-up stalls. The TV got stuck loading when playback was handed over late inside a
  stream segment; Spritz now starts it at a point the TV can play, and checks the TV ended up where the Mac was.
• AirPlay subtitles show text. A selected subtitle track no longer comes up empty, and a subtitle chosen
  while on AirPlay is kept when playback returns to the Mac.
• Spritz Receiver casts no longer freeze when started partway through a film at an unlucky position (the same
  stream-segment problem as AirPlay).
• Return to Mac works in smaller windows; the control bar was covering it.
• AirPlay recovery. If the TV drops the connection, Spritz returns to playing on the Mac by itself.
• The whole AirPlay row in the cast menu opens the device picker (click, Enter or Space), not just its icon.
• Retry discovery on the welcome screen and in the cast menu, with separate Google Cast and DLNA status.
• Torrents: the stream server only answers this Mac (TVs get a per-session link), downloads stop before the
  disk is full (1 GB reserve, with a warning when a file will not fit), and errors stay on screen until dismissed.
• New app and TV icons, sharper at small sizes and on the TV launcher.
• Spritz Receiver 0.4.0: the start and end times are readable from across the room (they were clipped to a
  sliver), and the launch screen now appears on current webOS.
• Build check: a package missing any of its npm dependencies can no longer pass verification.

Known problems (full list in the README)

• Not notarized. YouTube formats may be missing (no JavaScript runtime bundled for yt-dlp).
• After Stop, the TV stays on its AirPlay screen until you quit Spritz or leave AirPlay with the TV remote.
  This is how macOS keeps AirPlay connections; playback itself has stopped.
• When casting starts or AirPlay hands over, the TV can start a few seconds before where you were (it repeats
  them rather than stalling) or start early and then jump to the right place.
• Not yet verified: the first-launch steps on a Mac that has never run Spritz, a very large remux from a cold
  start, an HDMI freeze seen once during development, and picture and sound staying aligned by eye over a whole film.
• Receiver and casting were tested on one TV only; other Chromecasts and AirPlay receivers were not.

Source and licences

GPL-3.0-or-later. The bundled ffmpeg is a GPL build, so the app conveys GPL and LGPL code. The source of those
components, at the exact versions inside this release, is attached here as
Spritz-2.0.0-rc.16-corresponding-source.tar: the upstream archives, the Homebrew build recipe for each
library, an index and checksums. Spritz's own source is this repository. The licence texts are inside the app
(Help → Show Licenses in Finder). See the README section GPL binaries and corresponding source.

Spritz 2.0.0-rc.15

Spritz 2.0.0-rc.15 (pre-release)

A Mac media player (libmpv) that casts to your TV, plus an optional Spritz Receiver app for LG webOS TVs.
This is a release candidate, tested by one person on one Mac and one TV. Please read the caveats.

Download

• Mac app — Spritz-2.0.0-rc.15-arm64.dmg (Apple Silicon, macOS 11+). Open it and drag Spritz to Applications.
  Builds are ad hoc signed and not notarized, so macOS blocks the first launch. Either run
  xattr -dr com.apple.quarantine /Applications/Spritz.app in Terminal, or on macOS 15 and later try to
  open it and then use System Settings → Privacy & Security → Open Anyway (on macOS 11 to 14, right-click →
  Open works too). Full steps: README → Install.
• TV app — com.spritz.receiver_0.3.2_all.ipk, also inside the Mac app (Devices → Show the TV installer
  in Finder). Installing it needs LG Developer Mode on the TV and the webOS CLI; developer sessions
  expire. Details in the README under Spritz Receiver for LG webOS.
• Spritz-2.0.0-rc.15-corresponding-source.tar — the source of the GPL and LGPL components (see Source and licences).
• SHA256SUMS — verify your downloads.

What was tested

On an LG NANO80T6A (webOS), every route below played a local 1080p file, a 4K file and a streaming torrent,
and switched audio and subtitles where the route allows it. DLNA, AirPlay and Google Cast were checked with
all three; Spritz Receiver with local files and a streaming torrent.

Route	Audio and subtitles from the Mac	From the TV remote
Spritz Receiver	yes	yes
AirPlay	yes	not applicable
Google Cast	yes (restarts the stream, may jump back a few seconds)	not applicable
DLNA	no — the TV plays the original file	yes (the TV's own menus)

The app says this itself: each row in the cast menu names the route and where tracks are changed, and the
audio and subtitle menus carry a note while you are casting. On a torrent that is still downloading, seeking
and subtitles only reach what has arrived.

New since the last pre-release

• Licences now ship inside the app (Contents/Resources/licenses, and Help → Show Licenses in Finder): the GPL, the third-party notices (now naming all 47 libraries the app bundles, with versions and licences), Electron's and Chromium's licences, and every bundled npm package's. Earlier builds carried none of these. The package check now refuses a build without them.
• Casting fixes found on the LG. AirPlay now plays (its playlists were being refused, and read half-written);
  Google Cast now connects and plays 4 Mbps and 4K HEVC streams, resumes in the right place, and keeps subtitles
  in step (it crashed on any film with subtitles before).
• A much smaller cast menu, one short line per device, with Spritz Receiver first when it is online.
• Pairing a TV is one line: the TV's name and a four-digit field that submits itself.
• Help → Check for Updates… (opt-in; the only time Spritz contacts GitHub is when you click it) and a
  sandboxed renderer.
• Spritz Receiver 0.3.2: new icon and home screen, a pairing code that refreshes itself, Pair again and
  Change Mac from the TV, and a box to type the Mac's address if the TV cannot find it.
• Earlier in this series: a self-contained signed build with Electron fuses, accessibility and layout fixes,
  the window remembers its size, Anime4K shaders work when packaged, and a workaround for a libmpv crash when an
  audio device changes.

Known problems (full list in the README)

• Not notarized. YouTube formats may be missing (no JavaScript runtime bundled for yt-dlp).
• AirPlay can report "Cannot Decode" the first time it is started partway through a film; starting it again
  has worked. Seen once, not understood.
• Not yet verified: the first-launch steps on a Mac that has never run Spritz, a very large remux from a cold start, an HDMI freeze seen once during development, picture
  and sound staying aligned by eye over a whole film, and the resume position after you stop casting.
• Receiver and casting were tested on one TV only; other Chromecasts and AirPlay receivers were not.

Source and licences

GPL-3.0-or-later. The bundled ffmpeg is a GPL build, so the app conveys GPL and LGPL code. The source of those
components, at the exact versions inside this release, is attached here as
Spritz-2.0.0-rc.15-corresponding-source.tar (about 65 MB): thirteen upstream archives, the Homebrew build recipe
for each library, an index and checksums. Spritz's own source is this repository. The licence texts are inside
the app (Help → Show Licenses in Finder). See the README section GPL binaries and corresponding source.