HEIC to FLV Converter

Convert HEIC to FLV Online

This tool wraps a still HEIC photo (the iPhone format defined by ISO/IEC 23008-12) inside an FLV video container, holding the image on screen for a duration you set. It does not invent motion — the output is a single frame shown for the chosen length, so the clip looks like a static slide. FLV is a legacy Adobe Flash format, so reach for this only when an old Flash-era pipeline still demands .flv; for anything modern, convert HEIC to MP4 instead.

How to Convert HEIC to FLV

1. Upload Your HEIC File: Drag and drop your .heic photo onto the page, or click "+ Add Files" to browse. You can queue several images and convert them in one batch.
2. Set the Duration: Open Advanced Options and use the Duration dropdown (default "5 seconds per frame") to choose how long the still stays on screen. Pick Video per image if you want one separate FLV per photo, or Merge images to chain several stills into one clip.
3. Pick Quality and Background: Set the Quality Preset (default "Very High (Recommended)"), choose a Background Color for any letterbox bars when the photo's aspect ratio differs from the frame, and optionally lock a resolution under Video resolution.
4. Convert and Download: Click "Convert" and save your FLV. No sign-up, no watermark.

HEIC vs FLV — and Why MP4 Is Usually the Better Target

Frequently Asked Questions

Does this add any motion or animation to my HEIC photo?

No. A HEIC file is a single still image, so the FLV holds that one frame on screen for the duration you set — there is no panning, zoom, or transition. If you want movement, you would need multiple images merged into a sequence, or a tool built for slideshow effects.

Should I really output FLV, or convert HEIC to MP4 instead?

For almost every modern use, MP4 is the better choice. Adobe ended support for Flash Player on December 31, 2020, and browsers no longer run Flash content, so FLV will not play in Chrome, Firefox, Edge, or Safari without a dedicated legacy player. Choose FLV only when a specific old system requires it; otherwise convert HEIC to MP4.

What duration should I set for a single still?

It depends on how the clip will be used. A few seconds is enough for a placeholder or a quick visual; if the image carries text someone needs to read, lean toward the longer presets. The Duration dropdown defaults to 5 seconds per frame, which is a reasonable middle ground.

Why is there a black background option for a still image?

When your photo's aspect ratio does not match the video frame, the encoder fills the leftover space with bars. The Background Color dropdown sets that fill color — black is the default and is the least distracting for most footage, but you can match it to the image or your slideshow theme.

What video codec does the FLV use, and will the quality drop?

FLV containers historically carry Sorenson Spark, On2 VP6, or H.264 video. Because your source is a single high-resolution still, in our testing the visible quality at the "Very High" preset is close to the original photo; any loss comes from video compression of static content, which is minor when nothing in the frame is moving.

I already have FLV files — can I modernize them?

Yes. To bring legacy Flash video into a format that plays everywhere, use FLV to MP4. That re-wraps (and if needed re-encodes) the stream into MP4 so it works in current browsers and on phones, with no Flash Player required.

Is my HEIC upload private?

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 or made public. The main practical limit on a large HEIC is your upload speed and the file's size, not anything on the page itself.