HEIC to AVI Converter

How to Convert HEIC to AVI Online

1. Upload Your HEIC Files: Drag and drop or click "Add Files" to select HEIC photos from iPhone or iPad. Batch upload is supported — every image becomes a slideshow frame in upload order.
2. Pick Merge Strategy and Image Duration: Choose "Merge images" to combine all photos into one AVI slideshow, or "Video per image" to output one AVI per photo. Set Image Duration anywhere from 1/60 second per frame (single-frame stutter at ~60 fps) up to 10 seconds per frame; 3–5 seconds is the standard slideshow pace.
3. Tune Codec, Quality, Background, and Resolution (Optional): Default codec pair is MPEG-4 video plus MP3 audio for legacy Windows Media Player compatibility — switch Video Codec to H.264 or H.265 for smaller files at the same visual quality, or DivX/Xvid for older standalone players. File Compression accepts a Quality Preset (Highest through Lowest), Target File Size %, an exact size in MB, Constant or Variable Bitrate (CBR/VBR), or Constant Quality (CRF). Pick a Background Color (Black is default; 24 colors available) for letterbox bars when image aspect ratios don't match the video frame. Video Resolution supports presets from 144p up to 8K (4320p) plus custom width/height.
4. Convert and Download: Click Convert. Files process in your browser session — no sign-up, no watermark, no installed codec pack required.

Why Convert HEIC to AVI?

HEIC (High Efficiency Image Container) is the iPhone and iPad default photo format since iOS 11 (September 2017), available on iPhone 7 and later. Inside the HEIC container Apple uses HEVC (H.265) still-image compression, which typically halves file size versus JPEG at the same visual quality. AVI is Microsoft's Audio Video Interleave container, introduced with Video for Windows in November 1992 — a codec-agnostic wrapper that plays in Windows Media Player, VLC, and just about every Windows-era media app. Converting a stack of HEIC photos to AVI produces a single playable slideshow file that any Windows machine can open without the HEIF Image Extensions add-on.

• Share iPhone photo memories with Windows-only family — HEIC won't open in Windows 7 or 8 at all, and Windows 10/11 needs paid "HEVC Video Extensions" from the Microsoft Store for full HEIC support. An AVI slideshow plays out of the box.
• Embed photo sequences in legacy NLE workflows — older Adobe Premiere, Sony Vegas, and Pinnacle Studio installs accept AVI on import but reject HEIC entirely. Render the slideshow once, drop the AVI onto the timeline.
• Burn-to-DVD pipelines — DVD authoring tools (DVD Flick, ConvertXtoDVD, Nero) ingest AVI cleanly; HEIC requires a separate decode step.
• Playback on smart TVs and USB media players — many 2015-era smart TVs and set-top boxes read AVI from a USB stick but display nothing for HEIC.
• Archive iPhone albums in a self-contained, codec-agnostic wrapper — AVI keeps the original frame timing baked in; no companion audio or sidecar file to lose.
• Project photo recaps from a Windows laptop — drop the AVI into PowerPoint or any Windows app and it runs without "missing codec" prompts when the right video codec is embedded.

HEIC vs AVI — Format Comparison

AVI Video Codec Quick Guide

Frequently Asked Questions

Why is MPEG-4 the default video codec for AVI output?

MPEG-4 Part 2 plus MP3 audio is the broadest-compatibility combination for AVI — it plays in Windows Media Player on Windows XP through Windows 11 without any external codec pack, and runs on the majority of standalone media players sold between 2005 and 2015. Switch to H.264 under Video Codec for roughly 40-50% smaller files at the same visual quality, but be aware H.264-in-AVI is non-standard and some very old players will reject it. For maximum modern compatibility, consider HEIC to MP4 instead.

How many HEIC photos can I include in one slideshow?

There's no hard photo cap — upload as many HEIC files as you need. Output length is image_count × image_duration. For example, 60 photos at 4 seconds per frame produces a 4-minute AVI. Classic AVI files are capped at 4 GB; the OpenDML (AVI 2.0) extension removes that ceiling and is enabled automatically when output would exceed 4 GB.

Why is the Trim option not shown for this conversion?

Trim only applies to source videos with an existing timeline. Since you're feeding still HEIC images into an empty video container, there is no input timeline to trim. Control total length by varying Image Duration (1/60 s up to 10 s per frame) and the number of HEIC files you upload.

Can I add background music to the slideshow?

The conversion tool itself doesn't add an audio track — the AVI is silent video with an MP3 audio codec stub. To overlay music, render the silent AVI here first, then drop it into a video editor (Shotcut, DaVinci Resolve, OpenShot) alongside an audio file and re-export. Or render to HEIC to MP4 and use one of the many MP4-friendly muxing tools.

Will my Live Photos transfer as motion?

No. Live Photos are stored as a HEIC still plus a paired short MOV file. This tool reads only the HEIC still image, so the motion captured immediately before and after the shutter is dropped. If you want the motion preserved, export the MOV sidecar from Photos.app first and convert that separately.

What background color should I pick if photos have different aspect ratios?

Black is the default and visually disappears on most displays and projectors, mimicking standard letterbox bars. White looks crisper inside PowerPoint or print-style slideshows. Pick a brand color (24 named colors including Navy, Crimson, Teal) when the slideshow plays inside a themed presentation. The background only shows where a photo doesn't fill the video frame — fix that upstream by setting Video Resolution to match your dominant photo orientation (1920×1080 for landscape iPhone shots, 1080×1920 for portrait).

Can Windows open HEIC files directly without converting?

Windows 10 and 11 can open HEIC if you install both the free "HEIF Image Extensions" and the paid "HEVC Video Extensions from Device Manufacturer" ($0.99) from the Microsoft Store; without the HEVC pack Windows shows a thumbnail but not the full image. Windows 7, 8, and 8.1 have no first-party path — third-party tools like CopyTrans HEIC for Windows are required. Converting to AVI sidesteps all of this and gives you a single file that plays on any Windows version since XP.

Does the AVI keep HEIC's HDR or wide color information?

Mostly no. HEIC supports HDR10 and 10-bit color via its HEVC underpinnings, but classic AVI was designed for 8-bit SDR and most AVI codec implementations (MPEG-4 Part 2, DivX, Xvid) only encode 8-bit 4:2:0. If you need the HDR preserved, encode H.265 inside AVI — but the right answer is usually HEIC to MP4 (or MKV), which were designed for HDR carriage.

Should I pick AVI or MP4 for my photo slideshow?

Pick AVI when the slideshow has to play on legacy Windows machines, older DVD authoring tools, or standalone USB media players from the 2005-2015 era. Pick MP4 (via HEIC to MP4) for anything modern — phones, smart TVs from the last 5 years, web upload, social sharing, and email. MP4 with H.264 is roughly 30-40% smaller than the equivalent MPEG-4 Part 2 AVI at the same visual quality and plays on every current device without codec packs.