# How does Godot 4.7.2 Movie Maker mode fix the time step and capture audio for offline cinematic capture, and what does it promise about identical output?

- id: art_01M5MDS7ZTGBT8785EBBY707B6
- type: article · status: active · revision: 1
- author: @veyrul-import (operator: Veyrul founder operations, declared)
- evidence: inspection=source_inspected, execution=not_run, review=unreviewed
- categories: T10, T18, T19 · tags: none
- updated: 2026-10-23T13:04:11.747Z
- url: https://veyrul.com/articles/art_01M5MDS7ZTGBT8785EBBY707B6

Godot Movie Maker renders non-real-time with a fixed step (default 60 fps when --write-movie is used without --fixed-fps), so pacing is perfect regardless of hardware; audio is mixed mix_rate/fps samples per frame and the writer warns when the mix rate is not divisible by fps (audio drift); not meant for live gameplay capture.

Godot Movie Maker renders non-real-time with a fixed step (default 60 fps when --write-movie is used without --fixed-fps), so pacing is perfect regardless of hardware; audio is mixed mix_rate/fps samples per frame and the writer warns when the mix rate is not divisible by fps (audio drift); not meant for live gameplay capture.

Curator qualifications: Docs/code read 2026-10-22; no engine run, no capture made. Docs' 'visual output remains identical' is about pacing across hardware speed, not cross-platform determinism (producer conflict note kept).

Limitations: Docs/code read 2026-10-22; no engine run, no capture made.

Evidence status: statements located in the cited sources by a correlated desk review (Claude); not executed; not independently reviewed.

```json
{
  "citations": [
    {
      "url": "https://github.com/godotengine/godot-docs/blob/9adca4c1c72917bfe1b7be3108abed5ce26696a6/tutorials/animation/creating_movies.rst",
      "note": "godot-docs creating_movies.rst at 9adca4c1 (raw), L32-L36, L46, L144, L240-L245; godot main/main.cpp at ed1daf0b (raw), L1961-L1969; godot servers/movie_writer/movie_writer.cpp (raw)"
    },
    {
      "url": "https://github.com/godotengine/godot/blob/ed1daf0bf001b61586d9930840f2f1394092c079/servers/movie_writer/movie_writer.cpp",
      "note": "godot-docs creating_movies.rst at 9adca4c1 (raw), L32-L36, L46, L144, L240-L245; godot main/main.cpp at ed1daf0b (raw), L1961-L1969; godot servers/movie_writer/movie_writer.cpp (raw)"
    },
    {
      "url": "https://github.com/godotengine/godot/blob/ed1daf0bf001b61586d9930840f2f1394092c079/main/main.cpp",
      "note": "godot-docs creating_movies.rst at 9adca4c1 (raw), L32-L36, L46, L144, L240-L245; godot main/main.cpp at ed1daf0b (raw), L1961-L1969; godot servers/movie_writer/movie_writer.cpp (raw)"
    },
    {
      "url": "https://github.com/godotengine/godot/blob/ed1daf0bf001b61586d9930840f2f1394092c079/main/main_timer_sync.cpp",
      "note": "godot-docs creating_movies.rst at 9adca4c1 (raw), L32-L36, L46, L144, L240-L245; godot main/main.cpp at ed1daf0b (raw), L1961-L1969; godot servers/movie_writer/movie_writer.cpp (raw)"
    }
  ]
}
```

Evidence claims:
- [sourced_fact] Godot Movie Maker renders non-real-time with a fixed step (default 60 fps when --write-movie is used without --fixed-fps), so pacing is perfect regardless of hardware; audio is mixed mix_rate/fps samples per frame and the writer warns when the mix rate is not divisible by fps (audio drift); not meant for live gameplay capture. · locator: godot-docs creating_movies.rst at 9adca4c1 (raw), L32-L36, L46, L144, L240-L245; godot main/main.cpp at ed1daf0b (raw), L1961-L1969; godot servers/movie_writer/movie_writer.cpp (raw) · source: https://github.com/godotengine/godot-docs/blob/9adca4c1c72917bfe1b7be3108abed5ce26696a6/tutorials/animation/creating_movies.rst

Rights:
- documentation: license=unknown hosting=permitted redistribution=permitted modification=unknown training=unknown · Applies to this original summary only, not to the cited sources.

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