feat: warn apple silicon rosetta. Closes #1362

packages/docs/docs/troubleshooting/rosetta.md

@@ -0,0 +1,36 @@
+---
+id: rosetta
+sidebar_label: Rosetta
+title: Apple Silicon under Rosetta
+---
+
+Running Remotion on Apple Silicon (M1 chip) under Rosetta can be up to 2x slower.
+
+The recommended way to run Remotion on Apple Silicon is using Node 16 with the native arm64 architecture.
+
+If you encounter the following warning while using `@remotion/renderer`:
+
+```
+Apple Silicon detected but running under Rosetta (not arm64 architecture). This will cause performance issues.
+Recommended actions:
+ - Upgrade to Node 16.0.0 or later
+ - Run Node using `arch -arm64` architecture
+```
+
+You are either using Node 14 (which uses Rosetta on Apple M1 chips), or you are running a node version installed with `arch -x86_64`.
+
+## Solution
+
+1. Upgrade to Node 16 or later
+1. Install Node and run it natively
+
+For example, installing node natively using nvm:
+
+```
+arch -arm64 zsh
+nvm install 16
+```
+
+You can check the architecture of your shell by typing in a terminal `arch`.  
+You can check the Node architecture by running in a terminal `node -p process.arch`.  
+If both of these print out `arm64` you are good to go.

packages/docs/sidebars.js

@@ -346,6 +346,7 @@ module.exports = {
         "wrong-composition-mount",
         "staticfile-relative-paths",
         "staticfile-remote-urls",
+        "troubleshooting/rosetta"
       ],
     },
 

packages/renderer/src/check-apple-silicon.ts

@@ -0,0 +1,29 @@
+import * as os from 'os';
+
+export const warnIfAppleSiliconIsNotUsingArm64Architecture = () => {
+	// see https://github.com/nodejs/node/issues/41900#issuecomment-1113511254
+	const cpus = os.cpus();
+	const isAppleSilicon = cpus[0].model.includes('Apple');
+	const isArm64 = os.arch() === 'arm64';
+
+	if (isAppleSilicon && !isArm64) {
+		const recommendedNodeVersion = 16;
+		const version = process.version.replace('v', '').split('.');
+		const majorVersion = Number(version[0]);
+		const recommendNodeUpgrade = majorVersion < recommendedNodeVersion;
+
+		console.warn(
+			[
+				`⚠️  Apple Silicon detected but Node.JS running under Rosetta. This will cause performance issues.\n`,
+				`Recommended actions:\n`,
+				recommendNodeUpgrade
+					? ` - Upgrade to Node ${recommendedNodeVersion} or later\n`
+					: ' - Run Node using `arch -arm64` architecture\n',
+				'See https://remotion.dev/docs/troubleshooting/rosetta for more information.',
+				'---',
+			]
+				.filter(Boolean)
+				.join('\n')
+		);
+	}
+};

packages/renderer/src/index.ts

@@ -4,6 +4,7 @@ import {cleanDownloadMap, makeDownloadMap} from './assets/download-map';
 import {DEFAULT_BROWSER} from './browser';
 import {DEFAULT_TIMEOUT} from './browser/TimeoutSettings';
 import {canUseParallelEncoding} from './can-use-parallel-encoding';
+import {warnIfAppleSiliconIsNotUsingArm64Architecture} from './check-apple-silicon';
 import {DEFAULT_CODEC, validCodecs} from './codec';
 import {convertToPositiveFrameIndex} from './convert-to-positive-frame-index';
 import {
@@ -168,3 +169,6 @@ export const RenderInternals = {
 	cleanDownloadMap,
 	convertToPositiveFrameIndex,
 };
+
+// Warn of potential performance issues with Apple Silicon (M1 chip under Rosetta)
+warnIfAppleSiliconIsNotUsingArm64Architecture();