ZacharyZhang-NY
e74dafcd36
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.
82 lines
1.6 KiB
Markdown
82 lines
1.6 KiB
Markdown
---
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name: can-decode
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description: Check if a video can be decoded by the browser using Mediabunny
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metadata:
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tags: decode, validation, video, audio, compatibility, browser
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---
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# Checking if a video can be decoded
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Use Mediabunny to check if a video can be decoded by the browser before attempting to play it.
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First, install the right version of Mediabunny:
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```bash
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npx remotion add mediabunny
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```
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## The `canDecode()` function
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This function can be copy-pasted into any project.
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```tsx
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import { Input, ALL_FORMATS, UrlSource } from "mediabunny";
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export const canDecode = async (src: string) => {
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const input = new Input({
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formats: ALL_FORMATS,
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source: new UrlSource(src, {
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getRetryDelay: () => null,
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}),
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});
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try {
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await input.getFormat();
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} catch {
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return false;
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}
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const videoTrack = await input.getPrimaryVideoTrack();
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if (videoTrack && !(await videoTrack.canDecode())) {
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return false;
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}
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const audioTrack = await input.getPrimaryAudioTrack();
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if (audioTrack && !(await audioTrack.canDecode())) {
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return false;
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}
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return true;
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};
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```
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## Usage
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```tsx
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const src = "https://remotion.media/video.mp4";
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const isDecodable = await canDecode(src);
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if (isDecodable) {
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console.log("Video can be decoded");
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} else {
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console.log("Video cannot be decoded by this browser");
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}
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```
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## Using with Blob
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For file uploads or drag-and-drop, use `BlobSource`:
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```tsx
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import { Input, ALL_FORMATS, BlobSource } from "mediabunny";
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export const canDecodeBlob = async (blob: Blob) => {
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const input = new Input({
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formats: ALL_FORMATS,
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source: new BlobSource(blob),
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});
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// Same validation logic as above
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};
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```
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