docs: complete the media-start layer map + fix the third page

Per Rames: add the engine audio mixer (audioMixer.ts:350 -> ffmpeg -ss) to the
media-start-only readers — it's the live path that makes a lone data-playback-start
a shipped output bug (trimmed picture over untrimmed audio). 'Set one' isn't enough;
give the element-kind rule: <video>/<audio> use data-media-start, nested composition
uses data-playback-start (Studio writes it; it's the child-timeline offset). Also fix
editing-existing-videos.mdx, which offered both names as interchangeable for front
trim of a clip — the exact kind where they aren't.
This commit is contained in:
ukimsanov
2026-08-05 10:45:32 -07:00
parent 630c8900f5
commit c49fea2e0c
2 changed files with 2 additions and 2 deletions
+1 -1
View File
@@ -18,7 +18,7 @@ Every timeline verb resolves to a `data-*` attribute or an inline style. This is
| "start scene 2 later / earlier" | Move | `data-start` |
| "put the captions on top of the video" | Restack | `data-track-index` + inline `z-index` |
| "end the logo sooner" | Trim (right) | `data-duration` |
| "skip the first second of the clip" | Trim (front, media only) | `data-media-start` / `data-playback-start` |
| "skip the first second of the clip" | Trim (front, media only) | `data-media-start` |
| "make scene 2 two seconds long" | Retime | `data-duration` (and the GSAP timeline length) |
| "the audio bed is too loud" | Level | `data-volume` |