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ZacharyZhang-NY e74dafcd36 Silence render-disposed spam, unbreak bundled skills, drop board wake

Three independently ugly bugs that all fed the same log flood:

* Electron's `WebFrameMain.send` writes every "Render frame was disposed"
  to stderr via `console.error`. When the worker fans a second
  agent-event past a reloading renderer, we produced thousands of
  identical lines and stalled the main loop on stderr I/O. Added a
  `mainFrame.detached` guard so the send is short-circuited before
  Electron's own catch block fires, and installed a targeted filter in
  `suppress-warnings.ts` (now actually imported from the entry point)
  so the specific `console.error("Error sending from webFrameMain:"…)`
  noise never reaches the terminal. Any other payload still surfaces.

* `dispatchAgentMessage` accepted the human-reader sentinel as a wake
  target when an agent replied to `__board__` — `wakeAgentIfPossible`
  then called `db.getAgent("__board__")`, threw, and the dispatcher
  kept repeating on every send. Strip `HUMAN_SENDER_ID` at
  `resolveMessageWakeTargets`, and keep a defense-in-depth guard in the
  heartbeat so a stray caller (future automation fan-out) cannot
  reintroduce the crash.

* Pi's skills loader rejects any SKILL.md whose frontmatter `name`
  diverges from its parent directory. The four bundled `my-writing-style`
  copies declared `name: writing-style-skill`, so every install emitted
  a warning and dropped the skill. They also lived as orphan gitlinks
  (mode 160000 without .gitmodules), and the global `*.md` gitignore
  hid every other SKILL.md from version control. Fixed the frontmatter
  to match the dir, converted the dangling submodules to plain trees,
  and allowlisted `builtin-skills/**/*.md` so a fresh clone carries the
  catalogue instead of silently losing it.

2026-04-20 08:13:48 -04:00

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audio

Using audio and sound in Remotion - importing, trimming, volume, speed, pitch

tags
audio, media, trim, volume, speed, loop, pitch, mute, sound, sfx

Using audio in Remotion

Prerequisites

First, the @remotion/media package needs to be installed. If it is not installed, use the following command:

npx remotion add @remotion/media

Importing Audio

Use <Audio> from @remotion/media to add audio to your composition.

import { Audio } from "@remotion/media";
import { staticFile } from "remotion";

export const MyComposition = () => {
  return <Audio src={staticFile("audio.mp3")} />;
};

Remote URLs are also supported:

<Audio src="https://remotion.media/audio.mp3" />

By default, audio plays from the start, at full volume and full length. Multiple audio tracks can be layered by adding multiple <Audio> components.

Trimming

Use trimBefore and trimAfter to remove portions of the audio. Values are in frames.

const { fps } = useVideoConfig();

return (
  <Audio
    src={staticFile("audio.mp3")}
    trimBefore={2 * fps} // Skip the first 2 seconds
    trimAfter={10 * fps} // End at the 10 second mark
  />
);

The audio still starts playing at the beginning of the composition - only the specified portion is played.

Delaying

Wrap the audio in a <Sequence> to delay when it starts:

import { Sequence, staticFile } from "remotion";
import { Audio } from "@remotion/media";

const { fps } = useVideoConfig();

return (
  <Sequence from={1 * fps}>
    <Audio src={staticFile("audio.mp3")} />
  </Sequence>
);

The audio will start playing after 1 second.

Volume

Set a static volume (0 to 1):

<Audio src={staticFile("audio.mp3")} volume={0.5} />

Or use a callback for dynamic volume based on the current frame:

import { interpolate } from "remotion";

const { fps } = useVideoConfig();

return (
  <Audio
    src={staticFile("audio.mp3")}
    volume={(f) =>
      interpolate(f, [0, 1 * fps], [0, 1], { extrapolateRight: "clamp" })
    }
  />
);

The value of f starts at 0 when the audio begins to play, not the composition frame.

Muting

Use muted to silence the audio. It can be set dynamically:

const frame = useCurrentFrame();
const { fps } = useVideoConfig();

return (
  <Audio
    src={staticFile("audio.mp3")}
    muted={frame >= 2 * fps && frame <= 4 * fps} // Mute between 2s and 4s
  />
);

Speed

Use playbackRate to change the playback speed:

<Audio src={staticFile("audio.mp3")} playbackRate={2} /> {/* 2x speed */}
<Audio src={staticFile("audio.mp3")} playbackRate={0.5} /> {/* Half speed */}

Reverse playback is not supported.

Looping

Use loop to loop the audio indefinitely:

<Audio src={staticFile("audio.mp3")} loop />

Use loopVolumeCurveBehavior to control how the frame count behaves when looping:

"repeat": Frame count resets to 0 each loop (default)
"extend": Frame count continues incrementing

<Audio
  src={staticFile("audio.mp3")}
  loop
  loopVolumeCurveBehavior="extend"
  volume={(f) => interpolate(f, [0, 300], [1, 0])} // Fade out over multiple loops
/>

Pitch

Use toneFrequency to adjust the pitch without affecting speed. Values range from 0.01 to 2:

<Audio
  src={staticFile("audio.mp3")}
  toneFrequency={1.5} // Higher pitch
/>
<Audio
  src={staticFile("audio.mp3")}
  toneFrequency={0.8} // Lower pitch
/>

Pitch shifting only works during server-side rendering, not in the Remotion Studio preview or in the <Player />.

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