Convert MP4 to AV1 Online Free
How to convert MP4 to AV1: Upload your MP4 video using the converter above and get an AV1-encoded file back. ChangeThisFile uses advanced AV1 encoding to compress your video with superior quality and 50% smaller file sizes. Files are auto-deleted after conversion.
By ChangeThisFile Team · Last updated: March 2026
To convert MP4 to AV1, upload your MP4 video using the converter above. ChangeThisFile processes your video with AV1 encoding on our servers using FFmpeg. AV1 provides 50% better compression than MP4 while maintaining quality. Files are encrypted during transfer and auto-deleted after conversion. Free, no signup required.
Convert MP4 to AV1
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MP4 vs AV1: Format Comparison
Key differences between the two formats
| Feature | MP4 | AV1 |
|---|---|---|
| Compression efficiency | H.264/H.265 baseline | 50% smaller files than H.264 |
| Quality | Good | Better quality at same bitrate |
| Browser support | Universal | Chrome, Firefox, Edge (2021+) |
| Streaming optimization | Standard | Advanced tile-based encoding |
| Patent status | Royalty-bearing | Royalty-free |
| Encoding speed | Fast | Slower but improving |
When to Convert
Common scenarios where this conversion is useful
Video streaming optimization
Reduce bandwidth costs by converting MP4 videos to AV1 format, achieving 50% smaller file sizes with equivalent quality.
YouTube and web upload
Prepare videos for platforms that support AV1, improving load times and viewer experience.
Archive compression
Convert large MP4 video libraries to AV1 format to save significant storage space while preserving quality.
How to Convert MP4 to AV1
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1
Upload your MP4
Click to select your MP4 file or drag and drop it onto the converter.
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2
AV1 encoding
Our servers process your video with advanced AV1 encoding using FFmpeg. This may take 1-3 minutes.
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3
Download AV1 video
Download your compressed AV1 video. Original file is automatically deleted from our servers.
Frequently Asked Questions
Yes, completely free with no file size limits or usage restrictions.
AV1 files are typically 50% smaller than equivalent quality MP4 files encoded with H.264.
AV1 is supported by Chrome, Firefox, and Edge (2021+). Safari support is coming soon.
No. Videos are automatically deleted from our servers immediately after conversion.
Typically 1-3 minutes depending on video length and resolution. AV1 encoding is more complex than MP4.
Yes, AV1 supports up to 8K resolution and is particularly efficient for high-resolution content.
Yes, there's no file size limit. Larger files will take proportionally longer to encode.
Yes, AV1 typically provides 20-30% better compression than HEVC while being royalty-free.
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Need to convert programmatically?
Use the ChangeThisFile API to convert MP4 to AV1 in your app. No rate limits, up to 500MB files, simple REST endpoint.
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