HEVC to AVIF Converter

How to Convert HEVC to AVIF Online

1. Upload Your HEVC File: Drag and drop, or click "+ Add Files" to choose an HEVC (H.265) clip from your phone, drone, action cam, or screen recorder. Batch upload is supported.
2. Pick Frame Selection: Choose Specific Frame and enter a Time (seconds) value (e.g. 2.100 for 2 seconds 100 ms) to grab a single still, or choose Multiple Screenshots with an interval from every 0.1 s up to every 10 s to extract a sequence.
3. Tune Image Compression and Resolution (Optional): Set the Quality Preset (Highest, Very High, High, Medium, Low, Very Low, Lowest), target a Specific file size in KB or MB, or fine-tune Image Quality (%) on a 1–100 slider. For dimensions, Keep original, scale by Resolution Percentage, pick a Preset Resolution (4320p down to 144p), or enter exact Width x Height.
4. Convert and Download: Click "Convert" — frames are extracted and re-encoded to AVIF in your browser session. No sign-up, no watermark.

Why Convert HEVC to AVIF?

HEVC (H.265) is the dominant codec for 4K, HDR, and high-bitrate capture — every iPhone since the iPhone 7 records HEVC by default when "High Efficiency" is on, and most modern drones, mirrorless cameras, and Android flagships ship the same codec. AVIF is the still-image counterpart of AV1, the open successor to HEVC released by the Alliance for Open Media in 2018 and standardised as a still format on 19 February 2019. Pulling a frame out of an HEVC clip and saving it as AVIF gives you the smallest possible file at near-original quality, served from a royalty-free pipeline.

• Web thumbnails from 4K footage — Editorial and e-commerce sites that ingest 4K HEVC b-roll need lightweight stills for hero crops and lazy-loaded grids; AVIF typically beats JPEG by 50%+ at the same perceived quality, per web.dev.
• Drone and action-cam key frames — DJI, GoPro HERO11+, Insta360, and Sony Action HEVC files are huge; one well-chosen AVIF still is often under 100 KB and shareable anywhere.
• CCTV and dashcam still capture — Pull the moment a license plate or face is sharpest from a long HEVC recording without re-encoding the whole clip.
• Royalty-free delivery pipeline — AVIF uses AV1, which is free of HEVC's patent-pool licensing — useful for SaaS, ad-tech, and CDN workflows where HEIC's MPEG-LA fees are an issue.
• HDR and wide-gamut preservation — AVIF supports 10- and 12-bit color and HDR (HLG, PQ), so HDR HEVC frames don't have to be tone-mapped down to 8-bit JPEG.
• Modern browser delivery — AVIF has 94%+ global support per caniuse (Chrome 85+, Firefox 93+, Edge 121+, Safari 16.4+, iOS 16+) — safe as a <picture> first source today.

HEVC Frame to AVIF vs Other Still Formats

Quality Preset and File-Size Guide

Frequently Asked Questions

Why extract HEVC frames as AVIF instead of HEIC?

HEIC and AVIF share the same HEIF container family but use different codecs — HEIC wraps HEVC, AVIF wraps AV1. AVIF reaches roughly 94% global browser support (Chrome, Firefox, Edge, Safari 16.4+, iOS 16+), while HEIC is decodable only by Safari and the Apple ecosystem. If the still is going on a website, in an email, or to non-Apple users, AVIF is the safer choice. If it stays inside Photos.app, HEIC is fine.

What does the Quality Preset map to internally?

The presets (Highest → Lowest) map to AV1 still-image quantizer settings — Highest is near-lossless, Very High targets visually transparent quality (the default), and Medium/Low aggressively reduce file size. If you need an exact file budget instead, switch to Specific file size with Smart Scale, or use Image Quality (%) for direct slider control on a 1–100 scale.

Can I extract several frames at once from a long HEVC video?

Yes. Pick Multiple Screenshots under Frame Selection and choose an interval — every 0.1 s for 10 frames per second through every 10 s for sparse coverage. The tool emits one AVIF per sample, named with the source filename and a frame index, so you can pick the best frame in your file browser without re-running the job.

How precise is the Specific Frame timestamp?

The Time (seconds) input accepts decimals — 2.100 resolves to 2 seconds 100 ms, 5.5 to 5.5 s, and so on. Actual frame snapping depends on the source frame rate: a 30 fps HEVC clip has 33.3 ms between frames, so timestamps are rounded to the nearest captured frame. For 60 fps capture you get ~16.7 ms granularity.

Does this preserve HDR from iPhone or DJI HEVC footage?

If the source HEVC carries HDR metadata (HLG on iPhone, HDR10/PQ on supported drones), AVIF can store it — the format supports 10- and 12-bit color plus HDR transfer functions per the AOMedia spec. SDR clips are encoded as 8-bit AVIF. Note that not every viewer renders AVIF HDR yet; for HDR display today, Chrome and Edge are the most reliable.

Why is my AVIF larger than I expected?

Two common causes: (1) the source frame is genuinely complex (4K with film grain, foliage, or heavy noise compresses poorly even in AVIF), and (2) Quality Preset is set to Highest, which aims for near-lossless. Drop to Very High or High, scale the resolution down with Resolution Percentage, or set a Specific file size target if you need a hard budget.

Can I convert HEVC to AVIF on iPhone or Android?

Yes — the conversion runs entirely in your browser, so any modern Mobile Safari or Chrome works. iOS 16+ and recent Android browsers can also display the resulting AVIF natively, so you can preview the file before downloading. There's no app to install and no upload-to-cloud step.

What if I need broader compatibility than AVIF offers?

For maximum reach (older corporate Outlook, Windows 10 default viewer, ancient Android), extract as JPEG instead — virtually 100% support. WebP is a middle ground at ~98% browser support with smaller files than JPEG. If you actually want to keep the HEVC video and just transcode the container, see HEVC to MP4; for the same AVIF workflow from MP4 or MOV sources, see MP4 to AVIF and MOV to AVIF.

Is there a file-size limit?

Browser-based conversion handles typical phone, drone, and action-cam HEVC clips comfortably. Very long 4K HDR recordings may exceed available memory in low-RAM devices — if a job stalls, trim the clip first or process on a desktop browser, which has higher memory headroom.