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AVIF to HEIC: conversion guide

Source · AVIF
Target · HEIC

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What happens when you convert AVIF to HEIC?

Animation-capable destination

AVIF and HEIC can represent image animation, but their frame structures are not interchangeable. Retaining motion requires sequence decoding, compositing, timing and loop mapping plus an animation-aware encoder. No such transfer is implemented; a still-only pipeline would lose the sequence.

HDR display encoding

The source can carry HDR information and HEIC has HDR-capable variants. Working radiometric values and display-referred HDR are different representations. Range, primaries, transfer function and signalling must be mapped explicitly; the future engine may instead produce SDR. HDR preservation is not promised by format support.

Encoding mode

HEIC commonly uses lossy HEVC; HEVC also has lossless coding tools. Actual quality, bit depth and chroma depend on the encoded profile and settings, not on the .heic extension. HEIC permits different encoding modes or container representations. Its format name alone does not promise lossless output, a quality setting or a size reduction. The future engine must choose a supported codec and sample representation; inspect the target’s compression notes below.

AVIF

Source

AVIF

AV1 Image File Format

Compression: Lossy & losslessTransparency: YesMetadata: Exif, XMP, ICC, CICP

AV1-compressed pictures in an image container, with optional alpha, sequences and high-dynamic-range colour.

Explore AVIF format →
HEIC

Target

HEIC

High Efficiency Image File Format (HEVC)

Compression: Lossy & losslessTransparency: YesMetadata: Exif, XMP, ICC, NCLX

HEVC-coded photographs in HEIF, with room for auxiliary images and capture metadata.

Explore HEIC format →

Is AVIF → HEIC right for you?

Good choice when

  • HEIC fits your delivery use: Device photography & image collections.
  • Your destination supports the required animation variant.
  • You need HDR-capable delivery and can validate its encoding and colour signalling.
  • You need a transparency-capable destination and will check its supported variant.

Probably not when

  • You require guaranteed animation transfer from the unavailable converter.
  • You require guaranteed scene-linear values or HDR appearance.
  • You assume format-level alpha support guarantees matching transparent edges.
  • You need a guaranteed quality or file size before encoder settings exist.

AVIF to HEIC conversion details

Animation-capable destination
AVIF and HEIC can represent image animation, but their frame structures are not interchangeable. Retaining motion requires sequence decoding, compositing, timing and loop mapping plus an animation-aware encoder. No such transfer is implemented; a still-only pipeline would lose the sequence.
HDR display encoding
The source can carry HDR information and HEIC has HDR-capable variants. Working radiometric values and display-referred HDR are different representations. Range, primaries, transfer function and signalling must be mapped explicitly; the future engine may instead produce SDR. HDR preservation is not promised by format support.
Transparency representation
Both format profiles allow transparency, but this does not promise identical alpha representation. Source variants, target channel precision and alpha interpretation matter. The future encoder must explicitly carry or convert transparency; merely choosing HEIC guarantees no alpha transfer.
Encoding mode
HEIC commonly uses lossy HEVC; HEVC also has lossless coding tools. Actual quality, bit depth and chroma depend on the encoded profile and settings, not on the .heic extension. HEIC permits different encoding modes or container representations. Its format name alone does not promise lossless output, a quality setting or a size reduction. The future engine must choose a supported codec and sample representation; inspect the target’s compression notes below.
Sample precision & colour
Source and target sample models can differ in precision, channel layout, colour space and transfer function. Lossless compression only preserves the samples actually encoded; a precision reduction or colour conversion can already change them. The future engine defines numeric mapping, orientation and colour conversion; canonical depth facts are listed below where available.
Metadata & colour
Format support does not guarantee that an export preserves metadata or colour profiles. Retention and colour handling depend on the future converter; its engine is not implemented yet.
Compression
AVIF: Lossy & lossless → HEIC: Lossy & lossless AVIF: AVIF can use lossy or lossless AV1 coding. Chroma subsampling, RGB↔YUV conversion and reduced bit depth can change source values even when the AV1 coding stage is lossless. HEIC: HEIC commonly uses lossy HEVC; HEVC also has lossless coding tools. Actual quality, bit depth and chroma depend on the encoded profile and settings, not on the .heic extension.
Transparency
AVIF: Yes → HEIC: Yes
Animation
AVIF: Yes → HEIC: Yes
Colour depth
AVIF: 8 / 10 / 12 bits → HEIC: Codec/profile dependent
HDR
AVIF: Optional; colour properties → HEIC: Codec/profile dependent
Multiple images
HEIC: Collections & sequences
Dimensions
Pixel dimensions, page geometry, rendering resolution, resizing and orientation need explicit converter policies. The future engine has not defined them yet.
Metadata
AVIF: Exif, XMP, ICC, CICP → HEIC: Exif, XMP, ICC, NCLX. Which fields are copied, rewritten or omitted will depend on the future engine; retention is not implemented yet.

Common questions

Can the animation be transferred between formats?

AVIF and HEIC can represent image animation, but their frame structures are not interchangeable. Retaining motion requires sequence decoding, compositing, timing and loop mapping plus an animation-aware encoder. No such transfer is implemented; a still-only pipeline would lose the sequence.

Will HDR automatically survive in HEIC?

The source can carry HDR information and HEIC has HDR-capable variants. Working radiometric values and display-referred HDR are different representations. Range, primaries, transfer function and signalling must be mapped explicitly; the future engine may instead produce SDR. HDR preservation is not promised by format support.

Which compression mode will HEIC use?

HEIC commonly uses lossy HEVC; HEVC also has lossless coding tools. Actual quality, bit depth and chroma depend on the encoded profile and settings, not on the .heic extension. HEIC permits different encoding modes or container representations. Its format name alone does not promise lossless output, a quality setting or a size reduction. The future engine must choose a supported codec and sample representation; inspect the target’s compression notes below.

Are bit depth and colour values guaranteed to match?

Source and target sample models can differ in precision, channel layout, colour space and transfer function. Lossless compression only preserves the samples actually encoded; a precision reduction or colour conversion can already change them. The future engine defines numeric mapping, orientation and colour conversion; canonical depth facts are listed below where available.

Will metadata and colour profiles be retained?

AVIF: Exif, XMP, ICC, CICP → HEIC: Exif, XMP, ICC, NCLX. Which fields are copied, rewritten or omitted will depend on the future engine; retention is not implemented yet.

Explore related AVIF and HEIC conversions.

Other targets for AVIF

AVIF→JPEG
AVIF → JPEG
AVIF→WebP
AVIF → WebP
AVIF→JPEG XL
AVIF → JPEG XL

Other sources for HEIC

HEIF→HEIC
HEIF → HEIC
JPEG→HEIC
JPEG → HEIC
PNG→HEIC
PNG → HEIC