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[Bug]: iPhone MOV import renders yellow/green corrupted frames in macOS editor preview

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Bewertung

Schwierigkeit
4/5
Geschätzter Aufwand
3-5 Tage
Anfängerfreundlichkeit
48/100
Issue-Typ
Bug
Klarheit
Größtenteils klar
Aktivitätsstatus
Aktiv
Tech-Stack
electron, typescript
Bereich
desktop

Rechercherichtung

The issue does not name source files or tests. Start by tracing the macOS video import and editor preview decode paths, then inspect a reproducible sample’s codec, pixel format, and metadata alongside related issues #584, #585, and #676. Done means identifying and fixing the cause of the corrupted frames, with a regression check and a clear error or conversion path if the format is unsupported.

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Beschreibung

bug
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Describe the bug

Importing a video recorded with an iPhone (reported source container: MOV) into OpenScreen on macOS produces severely corrupted video in the editor preview.

The preview is filled with yellow/green vertical bands, blocky noise, and fragments of the original image. This is severe image corruption, rather than simply incorrect HDR brightness or saturation. The surrounding editor UI and frame/background render normally.

Expected behavior

The imported video should display recognizable, correctly oriented frames. If a codec or pixel format is unsupported, please show a clear error or offer conversion rather than render corrupted frames.

To Reproduce
  1. Record a video using the iPhone Camera app.
  2. Transfer the original MOV file to the Mac.
  3. Import the file into OpenScreen and open it in the editor.
  4. Play or seek in the timeline and observe the corrupted preview.

The exact recording settings and a shareable minimal source sample have not yet been collected, so these steps describe the affected workflow rather than a confirmed reproduction with every iPhone MOV file.

Screenshots

Portrait preview at approximately 00:03.3 of a 00:24.2 clip. Editor canvas is 1110 × 1920 (not confirmed source dimensions). The border and editor UI render normally.

iPhone video preview showing yellow green corruption
OS

macOS

OS Version

26.6.2 (read from the reporting machine at filing time)

Other OS

No response

Browser

None

Browser Version

No response

Other Browser

No response

Device Type

None

Other Device

No response

Additional context
  • OpenScreen: 2.1.1 (installed app version, read at filing time).
  • Desktop application; no external browser involved in video import.
  • The exact iPhone model, codec profile, bit depth, HDR metadata, frame rate, and rotation metadata of this particular MOV have not yet been inspected.
  • HEVC / 10-bit / HDR / Dolby Vision handling is a possible investigation direction, not a confirmed root cause. Pixel format/plane stride handling and preview compositing may also be relevant.
  • Related: #584 and #676 concern macOS HEVC/10-bit decode behavior; #585 concerns preview decode behavior. They do not appear to describe this specific visual corruption.
  • Export behavior has not been tested.
  • Re-encoding to H.264 8-bit SDR with proper HDR-to-SDR tone mapping has been proposed, but has not been validated as a workaround.
  • No original video, private filesystem paths, project files, or diagnostic logs are included.
Vorherrschende Sprache
TypeScript
Sterne
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Forks
231
Ø Merge
16 Std. 38 Min.
Gemergte PRs (30 T.)
327

Entwicklungsumgebung

Erste Schritte

  1. Lesen Sie das ganze Issue und danach den Beitragsleitfaden des Projekts.
  2. Schreiben Sie ins Issue, dass Sie es übernehmen — das erspart doppelte Arbeit.
  3. Forken Sie das Repository und arbeiten Sie in einem Branch.
  4. Öffnen Sie einen Pull Request, der die Issue-Nummer nennt.

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