@remotion/cli: Implement --disallow-parallel-encoding option

[Copilot]

This PR implements a new CLI flag --disallow-parallel-encoding for the render and benchmark commands, replacing the hardcoded disallowParallelEncoding: false values.

Changes Made

Core Implementation

• New option file: Created packages/renderer/src/options/disallow-parallel-encoding.tsx following the same pattern as other boolean options
• CLI flag: Added --disallow-parallel-encoding flag to both render and benchmark commands
• Config support: Added Config.setDisallowParallelEncoding() method for configuration files

Code Changes

• Replaced hardcoded disallowParallelEncoding: false in packages/cli/src/render.tsx (line 249)
• Replaced hardcoded disallowParallelEncoding: false in packages/cli/src/benchmark.ts (line 479)
• Added proper option resolution following CLI flag → config → default pattern

Documentation

• Added CLI documentation in packages/docs/docs/cli/render.mdx (marked as available from v4.0.315)
• Added CLI documentation in packages/docs/docs/cli/benchmark.mdx
• Added config documentation in packages/docs/docs/config.mdx with TypeScript example

Usage Examples

CLI Usage

# Render with disallowed parallel encoding
npx remotion render --disallow-parallel-encoding src/index.ts my-comp out.mp4

# Benchmark with disallowed parallel encoding  
npx remotion benchmark --disallow-parallel-encoding src/index.ts

Config Usage

// remotion.config.ts
import {Config} from '@remotion/cli/config';

Config.setDisallowParallelEncoding(true);

Benefits

• Memory efficiency: Allows users to trade speed for lower memory usage during rendering
• Consistency: Follows the same option patterns as other boolean flags like --muted
• Flexibility: Provides both CLI and config file options for different use cases

The option resolution follows the standard Remotion precedence: CLI flag takes precedence over config file, which takes precedence over the default value (false).

Fixes #5385.

---

💬 Share your feedback on Copilot coding agent for the chance to win a $200 gift card! Click here to start the survey.

[vercel]

The latest updates on your projects. Learn more about Vercel for Git ↗︎

Name	Status	Preview	Comments	Updated (UTC)
bugs	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Jun 16, 2025 11:59am
remotion	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Jun 16, 2025 11:59am