Video to AVIF Converter

How to Convert Video to AVIF Online

1. Upload Your Video: Drag and drop or click "+ Add Files" to load video files from your device. Accepts MP4, MOV, MKV, WebM, AVI, FLV, WMV, M4V, 3GP, MTS, MPEG, and 25+ other containers. Batch is supported — process several clips in one run.
2. Pick Quality Preset and Image Compression: Default is Very High (Recommended). Drop to High or Medium for smaller files, or push to Highest for archival frames. Optionally set a custom Quality Percentage to fine-tune AV1 encoder output.
3. Set Image Resolution and Frame Selection (Optional): Keep original, scale by Resolution Percentage, pick a preset (144p through 4320p / 8K), or enter custom Width × Height. Under Frame Selection, choose Specific Frame and enter a timestamp (e.g. 2.100 = 2.1 seconds) to capture one frame, or use Multiple Frames to grab a sequence.
4. Convert and Download: Click Convert. Files are uploaded over an encrypted connection, processed on our servers, and deleted automatically after a few hours — no sign-up, no watermark, never shared.

Why Convert Video to AVIF?

AVIF (AV1 Image File Format) was published in February 2019 by the Alliance for Open Media and uses the same AV1 codec that powers modern video streaming, wrapped in an HEIF/ISOBMFF container. Per MDN, lossy AVIF files are roughly 50% smaller than equivalent JPEG and modestly smaller than WebP at matched perceptual quality, while adding 10- and 12-bit color, HDR (BT.2100 / PQ / HLG), transparency, and image sequences. Pulling a frame (or a short sequence) out of a video into AVIF is the most efficient way to publish that still on the modern web.

• Web-optimized hero stills and thumbnails — A 1080p frame that lands at ~120 KB as JPEG typically lands at ~50-70 KB as AVIF, cutting LCP weight on image-heavy pages.
• Replace short autoplay clips with animated AVIF — Image sequences in AVIF compress dramatically better than animated GIF (which is capped at 256 colors per frame) and trade off well against animated WebP, making them a good fit for reaction loops, product demos, and UI micro-animations.
• HDR poster frames from HDR video — AVIF preserves 10-bit BT.2020 color from HEVC/HDR10 or Dolby Vision footage; JPEG would clip to 8-bit Rec.709 and crush the highlights.
• Screenshots from screen recordings — Pulling a single frame out of a .mov screencast at 4K and saving as AVIF produces a much smaller file than PNG while retaining clean text edges at high quality presets.
• Archival or print-ready stills — Use the Highest preset (or lossless) with 12-bit depth to keep grading headroom for the next pass, without the bloat of a TIFF.
• Social and CMS upload targets that accept AVIF — Cloudflare Images, Shopify, Squarespace, and most modern CDNs serve AVIF natively; many CMSes auto-fall-back to JPEG via <picture>, so shipping AVIF originals is safe.

AVIF vs Other Still Image Formats

Quality Preset Guide

For converting an existing animated GIF instead of a video, see convert-gif-to-avif. For the file-by-file inputs, the format-specific routes are convert-mp4-to-avif, convert-mov-to-avif, and convert-webm-to-avif. To re-compress an AVIF that's already on disk, use compress-avif.

Frequently Asked Questions

How much smaller is an AVIF frame than the equivalent JPEG?

Per MDN, lossy AVIF is roughly 50% smaller than JPEG at matched perceptual quality, and somewhat smaller than WebP. Exact ratio depends on content — flat illustrations and screencaps compress hardest, while heavy film grain or noise narrows the gap. The Very High preset is a good starting point for visual parity with high-quality JPEG.

Can I extract an animated AVIF (image sequence) from a short video clip?

Yes. Use the Frame Selection > Multiple Frames option to grab a sequence; the output is a single AVIF file containing the frames. Image sequences are part of the AVIF specification. Decoder support has matured but is not yet universal — Chrome and Firefox decode animated AVIF reliably, and Safari 16.4+ supports image sequences, though playback behavior in some browsers still trails animated WebP. For broadest compatibility, animated WebP or a short MP4/WebM remains safer; AVIF wins on size.

Which browsers can display the AVIF I generate?

As of May 2026, AVIF stills decode in Chrome 85+ (Aug 2020), Firefox 93+ (Oct 2021), Safari 16.4+ (March 2023), and Edge 121+. Global support is about 94% per caniuse. For the small residual audience, serve AVIF first via <picture> with a WebP and JPEG fallback — that pattern is what Cloudflare, Shopify, and Next.js' Image component use.

What timestamp format does Specific Frame accept?

Seconds with optional milliseconds, e.g. 0 for the first frame, 12 for the 12-second mark, or 2.100 for 2 seconds and 100 milliseconds. The frame at (or nearest to) that decode timestamp is extracted. If your source is variable-frame-rate (typical for screen recordings), the picked frame is the closest keyframe-snapped sample.

Why does my AVIF look slightly different from the source video frame?

Video frames are usually stored in 4:2:0 YUV with the camera/encoder's color matrix (BT.709 for HD, BT.2020 for HDR). The converter decodes that and re-encodes to AVIF, which can also store 4:2:0 in the same color space at higher bit depth. At Very High or above the difference is imperceptible; at Medium or below you may see softening of fine textures or banding in smooth gradients — typical lossy compression behavior, not a bug.

Does AVIF preserve HDR from my 10-bit HEVC or Dolby Vision footage?

AVIF supports 10-bit and 12-bit color and the BT.2100 / PQ / HLG transfer functions used by HDR10 and HLG broadcast. Dolby Vision dynamic metadata itself is proprietary and is not carried into AVIF, but the underlying HDR10 base layer (PQ + BT.2020 + 10-bit) is preserved. Pick the Highest or Very High preset to keep grading headroom.

What's the maximum video file I can upload?

The browser uploads in-session, so the practical ceiling is upload size and connection speed and network rather than a fixed cap. For multi-gigabyte source files, trim the clip first (see video-trimmer) and convert the relevant segment — AVIF extraction only needs the frames you actually want.

Should I use AVIF or WebP for an image I'm publishing today?

AVIF compresses better and supports HDR + 10/12-bit color; WebP has slightly broader historical support and simpler encoder tooling. With ~94% global AVIF support in 2026, the standard recommendation (per MDN) is to serve AVIF first and fall back to WebP, then JPEG, via <picture>. If you only have time to ship one format, AVIF is the better technical choice; if you need a single drop-in <img> replacement for the widest audience, WebP is still slightly safer.

Can I keep transparency from a video with an alpha channel (ProRes 4444, HEVC with alpha)?

AVIF supports an alpha channel, so transparency is preserved during the convert step when the source container carries it. Most consumer footage (H.264 MP4 from phones, screen recordings) has no alpha and will produce an opaque AVIF. ProRes 4444, HEVC-with-alpha, and certain WebM/VP9 streams do carry alpha and will round-trip into AVIF cleanly.

Does Safari support animated AVIF playback?

Safari added AVIF still support in 16.1 (partial) and 16.4 (March 2023, full per caniuse) including image sequences. In practice, animated AVIF playback behavior across browsers is less mature than animated WebP, so for short looping content where Safari < 17 is a concern, animated WebP or a muted autoplay <video> is the safer fallback.