Compress Video with HuffYUV Using FFmpeg

This article provides a straightforward guide on how to compress video files using the lossless HuffYUV (Huffman video codec) via FFmpeg. You will learn the exact command-line syntax, understand the key parameters involved, and find practical examples for converting your videos without losing any visual quality.

The Basic HuffYUV FFmpeg Command

To compress a video using the HuffYUV codec, you should output the file to an AVI container, as HuffYUV is natively and most reliably supported within AVI. Use the following basic command:

ffmpeg -i input.mp4 -c:v huffyuv -c:a copy output.avi

Command Breakdown

• -i input.mp4: Specifies the path to your source video file.
• -c:v huffyuv: Instructs FFmpeg to encode the video stream using the HuffYUV codec. This ensures mathematically lossless video compression.
• -c:a copy: Copies the original audio stream directly to the output file without re-encoding it, saving processing time and preserving original audio quality.
• output.avi: The name of the resulting lossless output file.

Advanced Options: Handling Audio and Pixel Formats

For a truly 100% lossless archive of both video and audio, you may want to convert the audio to uncompressed PCM instead of just copying the compressed source audio. You can do this with the following command:

ffmpeg -i input.mp4 -c:v huffyuv -pix_fmt yuv422p -c:a pcm_s16le output.avi

• -pix_fmt yuv422p: Forces the pixel format to YUV 4:2:2. HuffYUV primarily supports YUYV422 (YUV 4:2:2) and RGB24. Forcing this format ensures maximum compatibility with players that support HuffYUV.
• -c:a pcm_s16le: Encodes the audio stream to uncompressed 16-bit PCM.

Using FFmpeg’s Enhanced HuffYUV (FFVHUFF)

FFmpeg also includes an optimized version of the HuffYUV codec called ffvhuff. It is highly recommended because it supports a wider range of pixel formats (including YUV 4:2:0) and offers slightly better compression ratios:

ffmpeg -i input.mp4 -c:v ffvhuff -c:a copy output.mkv

Using ffvhuff allows you to safely use modern containers like MKV (.mkv) while maintaining full lossless compression.