MIDI2MP4 Studio - Phase 10.9.2

Source

Upload MIDI Format 0/1 SMF files. Tempo maps, note events, channel data, and time signatures are parsed locally.

Project title Subtitle Composer Arranger Copyright Title layout

Canvas Preset

Preset FPS Width Height

Duration mode Export seconds Video quality

Background

Image spanning full canvas

Fit Overlay Vignette

03B

Visual Template

Template family Variation Note style Color palette Grid intensity Safe margin

03C

Visualizer Designer Presets

Designer preset Preset name Density Trail seconds Blur px Blend mode Motion rate Visual scale Symmetry Note weight

Designer preset controls ready.

03D

Overlay Cleanup + Visualizer Box

Title / credit overlay MIDI stats text Progress / timecode Template label Viz X % Viz Y % Viz W % Viz H % Viz opacity GFX layer GFX intensity

03E

Layout Keyframes + Cards

Keyframe preset Strength Intro card sec Outro card sec Card style Animate visualizer Animate title Animate BG intensity

Keyframes are static until a preset is selected.

03F

Visual QA + Finished Presets

Finished preset Preset pack note

Choose a finished preset or run visual QA.

Audio Layout

Channels Sample rate Instrument engine Normalize Room Stereo spread

Timeline + Arrangement

Trim start sec Trim end sec Lead-in sec Arrangement Tempo scale Transpose Fade in sec Fade out sec

Export Performance

Export mode Frame format Frame quality Memory guard Export safety Export strategy Frame batch Auto cleanup

Export Profile Wizard

Phase 10.9.2 estimates the current MIDI before export and can apply safer FPS, resolution, frame-format, and ribbon-compositor defaults for long songs.

Load a MIDI to unlock the Phase 10.9.2 export profile wizard.

06B

Resource Governor

Resource profile Preview scale Preview FPS cap Max visual notes GFX particle cap Trail layer cap

Resource governor ready. Phase 10.9 uses export profiles: long/high-res MP4 exports get a preflight estimate, safer recommendations, a reduced-FPS fallback, a reduced-visual-complexity fallback, then poster-frame + full audio if needed.

QA + Failure Detectors

QA not run yet.

Arrangement Timeline

LOG

Export Console

MIDI2MP4 Studio Phase 10.9.2 initialized.

PLAN

Phase 10.9 Export Reliability Contract

Exact duration: default exports lock to the full uploaded MIDI duration, not an arbitrary max cap.
Project save/load: export a reusable project JSON, or a simple stored ZIP bundle with the MIDI/background assets.
Timeline trim: arrangement mode can still trim/loop when exact-duration lock is turned off.
Playback transforms: tempo scaling, transpose, lead-in, and master fade in/out are applied to browser preview, WAV, and MP4 output.
Timeline strip: channel lanes show the arranged notes with horizontal overflow for longer sequences.
TimGM6mb sample kit: Browser playback, WAV export, and MP4 audio still use the same imported sample-backed path by default.
Lazy sample loading: The app fetches only the piano/drum reference samples required by the loaded MIDI instead of preloading the whole kit.
Channel controls: MIDI pan, volume, expression, and reverb controller data are preserved where present.
Spatial audio: stereo spread, room reflections, and 5.1 distribution are applied before export.
MP4 encoder: bundled FFmpeg WASM, H.264 attempt with MPEG-4 fallback.
UI shell: export menu, bottom-right toast notifications, cloud-hostable static files.
CSP fix: Cloudflare/Netlify-style headers and meta policy now allow WASM compilation for FFmpeg.
Visual templates: expanded template families now include piano, radial, spectrum, poster, constellation, wave tunnel, keyboard wall, and hybrid performance views.
Variations: each template family has ten visual takes, giving roughly eighty combinations before note-style changes.
Title-card metadata: project title, subtitle, composer, arranger, and copyright can be burned directly into the MP4 canvas.
Background images: PNG/JPEG uploads remain full-canvas cover/contain/stretch assets, with overlay and vignette controls for readable visualizer output.
Overlay cleanup: template/take labels, note/channel stats, and bottom progress timecode can be hidden so they do not burn into MP4 exports.
Preview control: the live visual preview can now pause and scrub without forcing the arrangement timeline marker to keep moving.
Visualizer box: the main visualizer can be resized and repositioned inside the canvas so uploaded art or title treatments can stay visible.
GFX layer: first-pass starfield, rain, snow, sparks, and scanline effects can dress the background behind the MIDI visualizer.
Extra looks: Phase 10.3 keeps ribbon streams, particle burst fields, orbital equalizers, color palettes, and four more note-shape modes.
Designer presets: visual-only preset save/load, import/export JSON, and built-in designer looks now sit above the overlay cleanup controls.
Single audio preview: Render + Play is now a toggle. Press it while rendering or playing to stop/cancel the active preview instead of stacking another copy.
Layout keyframes: visualizer position, size, scale, opacity, title visibility, and background intensity can animate over the MP4 timeline.
Intro/outro cards: configurable title slates can appear at the beginning and end of the export without changing MIDI timing.
Preview lifecycle: loading a new MIDI or changing audio/timeline settings stops the old preview so only one playback buffer can exist at a time.
Visual preview idle default: the canvas/timeline marker starts paused and only moves when Play Visual Preview or audio preview playback is active.
Advanced knobs: density, trail length, blur, blend mode, motion rate, scale, symmetry, and note weight can reshape the visualizer without changing MIDI/audio timing.
Performance pass: JPEG frame pipeline, dynamic frame caps, export preflight estimates, batch yielding, and FFmpeg filesystem cleanup.
Resource governor: Eco/Balanced profiles cap preview FPS, preview backing resolution, active visual notes, GFX particles, trail layers, and export guard budgets to reduce browser memory/CPU spikes.
Frame budget rescue: recommended budgets are advisory in Auto/Warn/Force modes, so standard long-MIDI templates can still export instead of failing before FFmpeg tries.
Export profile wizard: one click applies recommended FPS, resolution, frame format, memory guard, and resource-governor defaults for the loaded MIDI.
Automatic estimate: the wizard shows duration, selected/effective FPS, resolution, frame format, staged-frame estimate, and memory-pressure level before export.
Fallback chain: MP4 export now tries the selected profile, then ribbon-compositor safe animation for ribbon presets, then reduced FPS, then reduced visual complexity, then poster-frame + full audio.
Failure detectors: host/CSP, FFmpeg asset shards, sample-kit assets, browser APIs, canvas encoding, and export-plan guardrails are checked in one pass.
Smoke test: a one-second internal MP4 encode can verify the FFmpeg worker without downloading a file.
Finished preset pack: YouTube, Shorts/Reels, square album cover, music poster, X/Twitter, club, minimal, and portrait presets can be applied in one click.
Preview thumbnails: the preset grid shows quick visual swatches for each finished export layout.
Visual QA: burn-in clutter, title/visualizer collision, title fit, background contrast, safe margins, box size, exact-duration lock, and frame budget can be checked before export.
Expanded look library: added arctic, sunset, blood/gold, forest neon, and black temple palettes plus aurora, bokeh, and vinyl-dust GFX layers.
QA report: diagnostics can be exported as JSON for hosting/browser troubleshooting.
Ribbon compositor: heavy Club Spectrum ribbon streams use a cached trail buffer instead of redrawing multiple historical ribbon layers every frame, preserving the neon ribbon look with less browser pressure.
Fallback safety: Missing sample notes fall back to the Phase 3/5 GM-lite synth instead of killing an export.

Cloud/static deploy ready

Upload index.html, styles.css, app.js, _headers, the complete ffmpeg/ folder, and the complete assets/reference-kit/ folder to the same cloud/static hosting directory. Phase 10.9 keeps exact MIDI duration, TimGM6mb samples, QA diagnostics, FFmpeg hosting checks, overlay burn-in toggles, preview pause/scrub, single-instance audio preview, resizable visualizer box, expanded note styles, GFX layers, designer presets, keyframes, visual QA, and the resource governor. Phase 10.9.2 restores the Club Spectrum preset to the heavier ribbon-stream look and adds a cached ribbon compositor, a ribbon-specific recommendation profile, and a ribbon-preserving fallback attempt before reduced-visual-complexity or poster-frame recovery.

Run QA diagnostics to populate the Phase 10.9 browser/codec matrix, or use Visual QA for layout/title safety checks.

No MIDI loaded yet.