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FFmpeg.wasm

Process audio and video files using FFmpeg.wasm

Actions21

Remux (Fast Convert)

AI-generated

Summary

Change container format without re-encoding (near-instant)

Inputs

  • remuxOutputFormat — Target container format (no re-encoding, near-instant)
  • outputBinaryPropertyName — Change container format without re-encoding, near-instant
  • outputBinaryPropertyName — Change container format without re-encoding (near-instant)
  • outputBinaryPropertyName — Name of the binary property to store the output file
  • additionalOptions — Additional options for controlling execution flow
  • encodingPreset — Encoding speed preset for x264/x265. Faster presets produce larger files but process much quicker in WebAssembly

Output shape

binary file with metadata

The remux operation returns a binary file in the specified outputBinaryPropertyName. The output format (container) is selected via remuxOutputFormat, with supported values being mp4, mkv, webm, mov, and others.

Examples

Example 1: User selects 'mp4' as output format

User selects mp4 in the output format dropdown. The node converts the input video to an mp4 container using FFmpeg's copy codec (no re-encoding), preserving the original video and audio quality. The output binary property stores the resulting mp4 file.

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