How to Check Supported Encoders in FFmpeg

Finding out whether your system’s FFmpeg installation supports a specific video or audio encoder is crucial for troubleshooting rendering and transcoding tasks. This article provides a quick and direct guide on how to use terminal commands to list, filter, and verify supported encoders in FFmpeg across Windows, macOS, and Linux.

List All Supported Encoders

To see the complete list of all encoders (both audio and video) compiled into your current FFmpeg installation, open your terminal or command prompt and run:

ffmpeg -encoders

This command will output a long list of encoders preceded by a set of capability flags (such as V for video, A for audio, S for subtitle, F for frame-level multithreading, and S for slice-level multithreading).

Search for a Specific Encoder

Because the full list can be overwhelmingly long, you can filter the output to search for a specific encoder (such as libx264, h264_nvenc, or libmp3lame).

On Linux and macOS:

Use the grep command to filter the results:

ffmpeg -encoders | grep libx264

On Windows (Command Prompt):

Use the findstr command to filter the results:

ffmpeg -encoders | findstr libx264

If the command returns a line containing the encoder name, it is supported by your system. If it returns no output, the encoder is not installed or was not enabled during the FFmpeg compilation process.

View Detailed Information for a Specific Encoder

If you want to verify that an encoder is present and inspect its configurable options, use the help command followed by the encoder name:

ffmpeg -h encoder=libx264

If the encoder is supported, this command will display its full list of capabilities, supported pixel formats, and customizable encoding parameters. If the encoder is not supported, FFmpeg will return an error stating that the encoder could not be found.