Problem: playback decoded and mixed every ~10 ms device buffer inside the
cpal callback (AAC decode, effects, opening a clip's file at a cut, rayon,
locks). On a loaded Mac any stall missed the device deadline: static and
dropouts, different on every play.
Solution: play_ahead mixes on its own thread into a lock-free ring kept
200 ms ahead; the callback only copies. An underrun plays silence, is
counted, and the mixer skips the same span so sound stays locked to the
picture. Any device width plays the channels it shares with the mix.
perf.stats reports playback.audio (callbacks, underruns, missingFrames,
minLeadMs). The program mix moved to playback_mix so bench_audio can play a
real project through a simulated 48 kHz device and count dropouts.
Context: on a real 22-sequence project, load average 38-58, 15 s per cut:
mixing in the callback overran 8-170 times, mixing ahead 0 (ring never
below 149 ms). The web build keeps mixing in its callback (no threads).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
A line that is not a JSON object with a string `method` (an HTTP request
line, other non-JSON text, a JSON array, invalid UTF-8, a line over 4 MiB)
now gets one error reply and the connection is closed, so a browser's
cross-origin fetch can't smuggle a command in its body. Connections are
capped at 16. Same transport as LightCraft (storytold/lightcraft#129).
Fixes#119.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Behaviour change to the default: with Linked Selection on (the default),
`timeline.move` now also moves the linked partners of the listed clips.
A partner lands on its own track in the same mode as the listed clip, so
a caller that lists only a picture clip can now overwrite audio at the
destination time. `"linked": false` gives the old behaviour (only the
listed clips move); the timeline panel passes it, so dragging is
unchanged.
Problem: `timeline.move {"moves": [{clip, track, time}]}` moved only the
listed clip. Its linked sound stayed where it was, out of sync, although
Linked Selection was on and `timeline.trim`, slide and select all act on
linked partners. Separately, a `time` near i64::MAX overflowed the tick
addition in the edit (a panic in debug builds, a wrapped position in
release).
Solution: a linked partner that is not itself in `moves` moves by the
same time offset and stays on its own track. A partner that is listed is
moved once, to where the list says. Two kinds of partner are left
exactly as they are: one on a locked track (the listed clip still moves,
as it did before), and one whose position would not change, which is the
case when the listed clip only changes track. Re-placing such a partner
would drop the transitions at its edges and report a move that did not
happen. A new optional `linked` parameter overrides the toggle for one
call. The command returns `{"moved": [ids]}`, the clips that moved.
No clip is moved before the sequence start. When one would be (a split
edit whose sound starts earlier, or several listed clips asked too far
left), all clips of the call land later by the same amount, so the
spacing asked for is kept. This replaces the per-clip clamp for a call
that lists several clips with a time below zero; a single clip still
lands at zero. The offsets are summed in i128 and checked on the way
back: a start past Tick::MAX is a parameter error and nothing moves.
Tests (timeline_move_tests.rs): partners follow, undo / redo, both
listed, `linked: false`, toggle off, `linked: true`; a locked partner; a
picture moved to another track at the same time leaves its sound and the
sound's crossfade untouched; the common stop at the sequence start with
a split edit and with two listed clips; hostile times (i64::MAX,
i64::MIN, junk). All fail without the change, the hostile one with the
overflow panic. docs/control-protocol.md and docs/agents.md describe the
default, the `linked` parameter and the result.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Problem: a command gated on the selection refused to run although the
caller named what to act on. `clip.replaceFromBin {clips, item}` answered
"select a clip in the Project panel"; `edit.clear`, `edit.rippleDelete`,
`edit.pasteAttributes`, `clip.enable`, `clip.link`, `clip.speedDuration`
and `clip.audioGain` with `clips` answered "no clips selected". A script
or agent had to change the user's selection first. The cause is the order
in Session::execute: `enabled()` runs before the parameters are read, and
it only knows the selection.
Fix: Session::execute asks enablement per call. When `enabled()` passes,
nothing changes. When it fails and the parameters name targets under a
key the command documents as ids (`clips` / `clip`: clips of the active
sequence, `items` / `item`: project items), the same `enabled()` runs
once more with those targets standing in for the selection, and the
selections are put back before the command runs. So only the selection
condition is answered by the named targets: no sequence, an empty
clipboard or the wrong kind of clip still disable the command, ids of
nothing do not count, and a command that does not document the key
(`edit.cut`) still needs a selection. This works for every command
because the predicates already resolve their targets the way `run` does
with empty parameters. `is_enabled` (menus, `engine.commands`) is
unchanged.
`clip.audioGain` already read `clips`; its parameter doc now says so.
Tests (explicit_targets_tests.rs): the commands above with and without
parameters, undo/redo, the selections left untouched, menu enablement
unchanged, and the cases that must still be refused. Four of the five
fail without the change in execute.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Problem: when the replacement is shorter than the clip's slot, the clip
silently runs past the end of its media and the renderer holds the last
frame. Nothing in the command's result says so, so a script or agent
that swaps a take cannot tell.
Solution: the result of the three Replace With Clip commands
(`clip.replaceFromSource`, `clip.replaceFromSourceMatchFrame`,
`clip.replaceFromBin`) gains `short`: one `{clip, shortByFrames}` per
replaced clip that now plays past the end of its media, in sequence
frames and never more than the clip's own length. It is empty when none
does; stills and other sources without an end, and held frames, are
never short. The edit itself is not changed, and the parameter docs are
untouched (results are described in docs/control-protocol.md).
Test: `replace_with_clip_reports_clips_that_run_past_the_new_media`
(From Bin with a 12-frame subclip, undo / redo, From Source Monitor,
Match Frame, the cases that are not short, and an In past the end of the
new media capped at the clip's length).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Problem: `clip.replaceFromBin` always restarts the clip at the new
item's In point (or its start). That matches Premiere's Replace With
Clip > From Bin, but a script or agent swapping one take for another has
no way to keep the clip's place in the media.
Solution: the default is unchanged, and so is its result. An optional
`keepSourceIn` (default false) keeps each clip's current source In. A
subclip that restricts trims has no media outside its range, so there a
kept In outside the range is moved to the subclip's first or last frame;
with `keepSourceIn` the result gains `sourceInClamped`, the clips this
was done for. The parameter doc lists the new parameter only (a result
description in it would take the command out of the Keyboard Shortcuts
list, which reads the doc to see whether a command needs parameters).
Tests: `replace_from_bin_keeps_the_source_in_on_request` (default and
its result, keepSourceIn, undo / redo, the disabled case, subclips before,
after and around the In, an unrestricted subclip, junk values), and
`list_searches_labels_and_keys` now asserts the three Replace With Clip
commands are bindable. docs/control-protocol.md describes the commands.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
With MEM1-MEM3 twelve clips on a timeline still took 5.1 GB, only 2.5 GB of
it live: each decoded picture allocated three planes, each eviction freed
them, and the system allocator kept the freed pages.
filmcraft_frame::pool keeps the planes of frames the GOP caches evict (up to
192 MiB per sample type; a frame something else still holds is left alone).
The H.264 decoder, through a plane allocator hook that keeps the crate free
of dependencies, and the VideoToolbox path take their output planes from it.
perf.stats reports decode.planePoolMB and decode.planesReused.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Each GOP cache keeps up to 384 MB of decoded frames (at least 64), and
nothing bounded the total: twelve clips on a timeline held 3.8 GB of frames
nobody was looking at, and no perf.stats counter showed it.
The pool now counts the frames of every cache against a 1 GiB budget. Over
it, caches idle for 3 s give up frames, least recently used cache first.
Caches in use keep their own budget, since a frame evicted before it is
shown costs a re-decode from the keyframe.
perf.stats reports decode.cacheMB and decode.cacheBudgetMB.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Every source kept its decoder for good once it had decoded a frame, with its
reference pictures and the pictures its frame threads hold in flight: about
290 MB per H.264 clip, 3.5 GB for twelve clips on a timeline.
The GOP caches now share a pool. Beyond four live decoders, the least
recently used caches that have been idle for 3 s drop theirs and make a new
one when asked again (a restart at the sync sample, as after a seek). Caches
in use keep their decoder whatever the count, so a composite of many layers
never restarts decoders per frame. Other caches are only try-locked, so two
caches trimming each other cannot deadlock.
perf.stats reports decode.liveDecoders.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
- New crates/platform (filmcraft-platform, L5): OS media FFI only. The one
crate allowed `unsafe` (own [lints] with unsafe_code = "deny",
#[allow(unsafe_code)] only on the videotoolbox module, SAFETY comment on
every block, safe Result-returning public API). AGENTS.md §0.3 names the
exception; docs/adr/0001-platform-ffi.md records why and the rules.
- VideoToolbox decoder for avcC / hvcC, 8/10-bit 4:2:0 and 4:2:2: session from
the sample entry's parameter sets with hardware required, asynchronous
decode (2 in flight), biplanar CVPixelBuffer copied to planar Yuv8/Yuv16,
reorder buffer of the stream's own depth, RASL skipped after a starting CRA.
Output callback under catch_unwind.
- HybridDecoder: transparent mid-stream fallback to the software decoder
(replays samples since the last restart point, drops already-returned
pictures). New codecs::software_video_decoder (built-in factories only) and
codecs::hw (switch, counters, NalStreamInfo shared with software decoders;
vui_color / sar_par helpers now used by both).
- Settings ▸ Playback ▸ Hardware decoding: Auto / Off (engine applies it to
the codecs switch); desktop app, CLI/MCP and bench call register().
- perf.stats decode.framesDecoded and decode.hardware counters.
- Tests: bit-exact parity with the software decoders (H.264 High, HEVC Main
open GOP, Main 10; resets, reseeks, flushes), forced-failure fallback,
mutation fuzz of samples and parameter sets, cross-platform fallback with a
stand-in decoder, setting Off, HEVC 4:2:2 vs ffmpeg.
- Bench --hw auto|off; results in docs/performance.md (4K CPU/frame
~86-119 ms -> ~4 ms).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
command_run file.exportMedia with wait: true (headless) runs as the
background export job and uses the MCP progress and cancellation utilities:
- with _meta.progressToken, notifications/progress reports frames done /
total with the job status, at most every 100 ms (none without a token);
- notifications/cancelled stops the job at the next batch (jobs.cancel),
deletes the partial output and sends no response;
- the session lock is only held for short polls, so ping, doc_inspect,
jobs.list etc. are answered while it encodes.
Without wait, and in bridge mode, nothing changes. Test
export_progress_and_cancel.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
- resources/list and resources/read serve the project (tree + active
sequence, as doc_inspect) and the command catalog (as command_list) as
JSON, for clients that attach context from resources.
- Results are built with rmcp's types, so resultType follows the negotiated
revision; for 2026-07-28 clients (current Claude Code) they also carry
ttlMs and cacheScope, like the generated tools/list. The resource list is
fixed (10 min), document reads are never cached (0).
- get_info now declares the resources capability; the instructions text
moves to a const, unchanged.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
- Every tool has a title and readOnly / destructive / idempotent / openWorld
hints, set in its #[tool] attribute, so clients can run the read-only
tools without asking and ask before edits.
- New tools: command_batch (several commands, stop at the first error by
default), doc_inspect (project tree + active sequence in one call) and
render_preview (= render_frame).
- An unknown tool argument is a -32602 error naming it and the accepted
ones, instead of being ignored.
- A line that is not JSON gets a -32700 reply (id null) instead of being
dropped without an answer: serve_io filters lines in front of rmcp.
- A panicking command no longer poisons the session lock for the rest of the
session ("session lock poisoned"); it is reported as "internal error: …"
(AGENTS.md §0.6).
- docs/agents.md § Conventions.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
List / Icon / Freeform views, Metadata Display, view presets, font size,
Preview Area, bin tabs and windows, hover-scrub In/Out; Media Browser tree,
Favorites, history, file types, thumbnails, Edit Columns, import and drag.
Engine: project_panel and media_browser modules, Services::list_entries.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
The column pass and the add/clip of idct4/idct8 work on whole rows so they
vectorise (same integer steps in the spec's row-then-column order; checked
against the per-column formulation on random blocks). Docs: draft decoding in
architecture.md and perf.stats fields in control-protocol.md.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
- HEVC inverse transform: sum basis rows of non-zero coefficients with a
const-generic size (bit-exact, tested against the direct product);
SAO edge offset gets a check-free interior loop. HEVC CPU/frame -60%.
- H.264/HEVC/VP9 planes are moved into VideoFrames, not copied.
- Catch-up decoding: frame jobs tell sources which frames are late
(filmcraft_media::cancel::with_catch_up); the GOP cache skips
non-reference samples of late frames (H.264 nal_ref_idc 0, HEVC
sub-layer non-reference pictures). Scrubs keep the last 2 s decoded.
- perf.stats: engine query + UI/control method (decode counters,
playback shown/dropped, frame-worker decode/render ms, cache use).
- Timeline waveform source peak cached; bench seek section and --only.
- docs/performance.md with before/after results.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Edit: Label ▸ 16 colours + Select Label Group, Paste Attributes… (⌥⌘V, with
Scale Attribute Times), Remove Attributes…, Select All Matching, Remove
Unused, Consolidate Duplicates. File: New ▸ Sequence From Clip, Bin From
Selection (⇧B), Offline File…; Close Project (⇧⌘W, asks to save), Save All.
Clip: Make Subclip… (⌘U, Restrict Trims), Edit Subclip…, Modify ▸ Audio
Channels… (⇧G) / Timecode…, Video Options ▸ Frame Hold Options…, Add Frame
Hold (now splits at the playhead), Insert Frame Hold Segment, Field
Options…, Time Interpolation (Frame Sampling / Frame Blending / Optical
Flow, blending rendered on CPU; optical flow falls back to blending),
Fit to frame / Fill frame; Audio Options ▸ Breakout to Mono, Extract Audio
(WAV next to the project, imported); Replace With Clip ▸ From Source
Monitor / Match Frame / From Bin. Hold Filters: effects animate through a
hold unless set. Menus support nested submenus (egui and native) and follow
Premiere's order. Dialogs in panels::clip_dialogs with automation ids and
ui.set {clipDialog}.
Project schema v9 (no-op migration v8→v9, v8-subclip fixture): clip
time_interpolation / hold_filters / field_options / source_channels,
Interpretation.audio_channels, Subclip.restrict_trims.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
MonitorView state is serde and settable with ui.set {program|source}; view.* UI commands with
menu checkmarks; wrench and zoom menus with automation ids; headless kittest tests (view_ui.rs).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Agents' ui.* requests used ViewportCommand::Focus, so the user's typing in another app landed in FilmCraft as shortcuts (stray Extract, Mark In/Out, markers…). Verified live: the frontmost app stays frontmost through launch, ui.click, ui.key and ui.screenshot, and the requests still take effect.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
- file.projectManager {destination, mode: collect|consolidate, sequences?,
excludeUnused, handles, preset, includeProxies, includePreviews, dryRun, wait}.
- Collect copies every file the chosen sequences use (nested sequences and subclips
followed), optionally proxies and render previews; consolidate writes only the used
media range plus handles with a transcode preset and re-bases media time so edits,
keyframes and markers stay put. Unused clips can be excluded.
- Dry run reports original / resulting disk space and the file plan; the copy runs
as a job and writes the project last with the new paths and fingerprints.
- UI: Project Manager dialog (sequences, mode, preset, options, destination,
Calculate → sizes) with automation ids pm.*.
- Tests: collected project opens with its media moved away and renders the same
frames; consolidate trims to used range + handles and matches (>38 dB) the original.
- ROADMAP: M11 done.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
- media.createProxies: background job (jobs.list progress) transcoding with our own
encoders — ProRes 422 Proxy ¼/½, ProRes LT ½, H.264 ¼/½ (audio included) — into
<media dir>/Proxies or a chosen folder; attached when the job finishes
(Session::poll_persistence applies finished media jobs).
- media.attachProxies (duration ±1 frame and frame rate must match; size/aspect may
differ), media.detachProxies, media.reconnectFullRes, media.toggleProxies
(Preferences ▸ Media ▸ enableProxies; bumps the view revision without dirtying the
project), media.proxyPresets.
- Proxy frames are smaller; ProxySource reports the original size and the compositor
derives its pixel scale from the frame, so Motion and effects render the same
picture (44 dB PSNR vs full res with Motion + Gaussian Blur, 48 dB at ½).
Export always renders full resolution.
- ExportSettings::prores_profile (proxy / lt / standard / hq).
- project.ingestSettings + file.import: copy (fingerprint-verified), transcode,
create proxies, copy and create proxies.
- UI: Toggle Proxies button on both monitors (lit when on), Create Proxies dialog,
Project panel Proxy submenu and P badges.
- Measured (one core, 4K H.264 testsrc2): CPU composite 201 → 35 ms/frame at ¼ with
ProRes Proxy ¼, 277 → 131 ms at ½ with H.264 ¼; decode 9.2 → 0.7 ms with H.264 ¼.
- Tests: create+attach+toggle same composite modulo scale, attach checks, export
ignores proxies, ingest copy + proxies, ignored 4K benchmark, headless UI test.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
- render::color_match: non-ML statistics matching — Oklab means per tonal range (smoothstep
shadow/midtone/highlight weights) plus mean chroma; "Face Detection" down-weights skin-tone
pixels (Oklab hue 20–75°) in the colour statistics and then limits the skin hue shift to 8°;
the grade is solved in Lumetri's own parameters (3 wheels, their lightness, saturation) by
damped Gauss–Newton through the real Lumetri implementation, so the result stays editable
- render::render_clip: one clip's layer at a time (the shot as Lumetri sees it)
- lumetri.applyMatch {clip?, referenceTime|Frame|Timecode, faceDetection} sets the grade in one
undo step and reports the statistics distance before/after; refuses a reference inside the
clip itself
- Lumetri panel: Color Match row (reference timecode, Face Detection, Apply Match; automation
ids lumetri.match.*)
- tests: Oklab reference values, self-match is a no-op, a known grade is recovered (residual
−86 %), skin protection holds the skin hue shift to ≤ 8° (51° without), engine and headless
UI tests
- docs: control protocol (colour commands and ids), testing; ROADMAP M8 row and log
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
- Missing media no longer fails: opening a project scans for missing files
(`media.findMissing`, `file.open` → missingMedia). Missing clips render our own
offline slate (render::offline: red striped field, warning triangle, "MEDIA NOT
FOUND", file name, hint) with silent audio, and the Link Media dialog opens.
- Media identity: imports record the size and a fast content fingerprint (hash of
size + first/last MiB) in MediaClip::identity (optional field, older builds
ignore it, no schema bump).
- media.relink checks file name / extension / fingerprint ("Clip ID") / duration /
media start / frame size+rate+channels, refuses a mismatched fingerprint unless
forced, supports Align Timecode (Project::shift_media_time), and relinks the
others automatically by the derived folder remap (Windows/macOS separators).
- media.autoRelink {from,to} | {folder}, media.search, media.replaceFootage,
media.makeOffline {deleteFiles?}, media.offlineAll, media.status, media.linkMedia.
- Media pool caches sources per reference (path, offline flag), so relink, Make
Offline and undo take effect at once; proxy-aware resolution and a full-res
provider that export uses.
- codecs::gop no longer holds its lock while decoding: rayon decoders inside a
parallel export could steal another frame of the same source and deadlock.
- UI: Link Media dialog (rows, match options, folder search with preview, Locate…,
Link, Offline, Offline All, Cancel), Make Offline dialog, Project panel offline
markers and context menu, media thumbnails keyed by media reference.
- Tests: moved media opens offline (slate rendered) and relinks others by folder,
prefix remap and folder search, fingerprint mismatch refused, Make Offline,
headless UI test of the dialog.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
- crates/ui-egui/src/panels/essential_sound.rs: per-type sections (Loudness with Auto-Match,
Repair, Clarity, Creative, Ducking with Generate Keyframes, Duration note, Pan), preset dropdown
with save/delete, code-drawn type glyphs, automation ids for every control; every control runs an
essentialSound.* command and a slider drag is one undo step
- headless kittest test (essential_sound_ui.rs) with optional wgpu snapshots
- docs: architecture §5.2, control-protocol ids, testing, ROADMAP
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
- Engine shortcut set (crates/engine/src/shortcuts.rs): bindings as data
(command, canonical chord, optional panel), panel shortcuts override app ones
while the panel has focus; per-OS modifiers (Cmd = Cmd/Ctrl, Ctrl = macOS
Control, folded into Ctrl elsewhere and reported as conflicts); conflict
detection, reassignment, undo/redo, Cancel restores; frontend commands
registered so tools/transport/panels are bindable too.
- Presets: FilmCraft Default, Premiere Pro / Final Cut Pro / Avid Media
Composer Compatible (key tables mapped onto FilmCraft command ids); custom
presets as JSON in <data dir>/Keyboard Shortcuts/, active set persisted,
Save As / Delete / Export / Import (Windows-notation files converted).
- shortcuts.* commands for agents/MCP (list/get/set/clear/undo/redo/conflicts/
forKey/resolve/presets/loadPreset/savePreset/deletePreset/export/import/audit).
- Premiere-default audit: commands without a shortcut get Premiere's key when
free (Shift+D Apply Default Transitions, Shift+J/L slow shuttle, Shift+K Play
Around, Project > Shift+O Open in Source Monitor); Audio Clip/Track Mixer
window shortcuts corrected (Shift+9 / Shift+6).
- Edit > Keyboard Shortcuts... (Cmd+Alt+K): keyboard drawn in code with
app/panel/both colouring and modifier filter, searchable command list with a
record-on-click Shortcut column and +, Key: detail list, conflict warnings,
Undo/Redo/Clear/Cancel/OK; automation ids shortcuts.*.
- Menus (in-app and native macOS key equivalents), command.list and the input
loop follow the active bindings live.
- Tests: 7 engine tests; scripted kittest test (record keys, live menu update,
reassignment, undo/redo, cancel, OK, panel-specific Left in History).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Root cause: not a lock. When the window is hidden or behind others (always when the app is
driven over the control channel), macOS App Nap drops every thread of the process to background
priority 4 and defers its timers. On a loaded machine (load avg ~150) a priority-4 process gets no
CPU: after Render In to Out + play the UI thread stayed runnable inside the run loop's timer
callout, every thread at PRI 4 (`ps -M`), 0 % CPU, control channel silent. Relaunched with App Nap
off the same script ran through: render 2–13 s instead of 15 s, every reply immediate (2/2 runs).
- apps/filmcraft/src/app_nap.rs: hold a user-initiated, latency-critical NSProcessInfo activity
for the life of the process (= NSAppSleepDisabled for a bundle; idle system sleep allowed).
- ui.screenshot: a hidden window or sleeping display never presents, so the screenshot event
never came and the UI repainted at full speed forever (100 % CPU). It now fails after 10 s with
"no frame was presented (window hidden or display asleep)" and polls at 60 Hz meanwhile.
Regression test: app_nap::tests (the activity is taken on macOS). The starvation itself needs a
hidden window on a loaded machine and is checked with the control-channel script in the commit
notes (captions.newTrack/add, markIn/Out, Full, renderInToOut wait, stop, playhead.set,
renderBar, ui.screenshot): all replies within 10 s.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
- Engine autosave module: Preferences (autoSave.enabled/intervalMinutes=5/maxVersions=20/
saveCurrentProject/recoveryJournal/recoveryIntervalSeconds), persisted in the per-user data
dir; prefs.get/set/reset commands.
- Background worker (filmcraft-autosave thread): the UI thread only hands over the Arc<Project>
snapshot; JSON encoding and atomic writes happen on the worker. Premiere-style auto-saves to
<project dir>/Auto-Save/<name>-YYYY-MM-DD_HH-MM-SS.fcproj (local time), only when changed,
rotated to Maximum Project Versions, optionally also saving the project.
- Recovery journal: debounced snapshot of unsaved changes in <data>/Recovery/<session>/ guarded
by an OS file lock; on launch, sessions whose lock is free and that left a snapshot are offered.
Clean quit removes the journal (or keeps it, marked cleanExit, if changes were unsaved).
- Commands: file.recover, file.discardRecovery, file.recoveryList, file.autoSaveNow,
file.autoSaveStatus, file.listAutoSaves.
- UI: Preferences ▸ Auto Save page (Edit ▸ Preferences, Cmd+,; FilmCraft ▸ Settings… on macOS),
"Recover Unsaved Changes" dialog at startup, Revert confirmation; all with automation ids.
- Desktop: --recover / --no-recover / --data-dir; local-time offset via chrono (clock).
- Verified in the app: edits, kill -9, relaunch, dialog, Recover restores the edits (unsaved, original path).
- docs/project-files.md: auto-save, recovery and measured costs (2,000 clips: 2.5 ms encode,
1.4 MB, ~30 ms atomic write+fsync, all off the UI thread). ROADMAP M11 updated.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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