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H.265 (HEVC)

H.265 (HEVC) is a video codec, not a container, that roughly halves H.264's bitrate for equivalent quality but carries fragmented patent licensing split across multiple competing patent pools.

Extension

.hevc

Full name

High Efficiency Video Coding (also MPEG-H Part 2)

Introduced

2013

Vendor

ITU-T Video Coding Experts Group and ISO/IEC MPEG (joint standard, patent pools include MPEG LA, Access Advance, and Velos Media)

What is inside the container

HEVC is delivered inside MP4 or MOV containers and is the default capture and encode codec on Apple devices since iOS 11 (2017), paired there with the HEIC image format. Unlike H.264's single-pool licensing, HEVC licensing is split across up to three separate patent pools — MPEG LA, Access Advance, and Velos Media — a fragmentation that is the direct, well-documented reason the royalty-free AV1 codec was created.

How to open it

macOS / iOS Native hardware decode and encode via Apple's dedicated Media Engine silicon on Apple Silicon Macs and recent iPhones — HEVC has been Apple's default capture codec since iOS 11/High Sierra.
Windows Windows Media Player and the Photos app require a separate paid "HEVC Video Extensions" purchase from the Microsoft Store unless the device OEM bundled a license; VLC bypasses this by using its own built-in decoder.
Command line (any OS) ffmpeg with libx265: `ffmpeg -i input.mp4 -c:v libx265 -crf 28 output.mp4`, or hardware paths like `-c:v hevc_videotoolbox` (Apple) and `-c:v hevc_nvenc` (NVIDIA) for faster encoding.
Browsers Safari has supported HEVC natively since 2017; Chrome and Firefox only added default HEVC playback support in 2024–2026, and even then it's often conditional on platform and available hardware decode rather than universal like H.264 or AV1.

For archives

HEVC is worth using for storage-conscious archival masters given its roughly 2x efficiency gain over H.264, especially for high-resolution camera-native footage from Apple devices that already ship as HEVC by default. Because Chrome and Firefox only recently and inconsistently added HEVC playback, keep an H.264 delivery proxy alongside any HEVC master intended for broad web distribution, and track the licensing situation — Access Advance's pool absorbed Via LA's HEVC pool in 2025 with a new 2026 rate structure, so organizations encoding HEVC at real commercial scale should confirm current licensing terms rather than relying on older published rates.

H.265, standardized as HEVC in 2013 by the same ITU-T/ISO-IEC collaboration model that produced H.264 (this time named the Joint Collaborative Team on Video Coding), roughly halves the bitrate needed for equivalent visual quality. That efficiency gain made it the natural successor for 4K and HDR content, and Apple adopted it as the default capture and encode codec across iPhone, iPad, and Mac starting with iOS 11 and macOS High Sierra in 2017, backed by dedicated hardware decode/encode blocks in Apple Silicon.

HEVC’s defining complication, though, is licensing fragmentation. Where H.264 settled into one dominant patent pool, HEVC essential patents are split across as many as three separate pools — MPEG LA, Access Advance, and Velos Media — meaning an implementer can, in principle, need to clear licenses with multiple administrators just to ship a compliant encoder or decoder. This fragmentation is widely cited as the direct catalyst for the creation of the royalty-free AV1 codec by the Alliance for Open Media. In 2025, Access Advance absorbed Via LA’s HEVC and VVC pools, consolidating roughly 80% of essential HEVC patents under one administrator, and set a new rate structure effective 2026 that runs through 2030 — a genuine, current licensing shift worth tracking rather than citing older figures as still accurate.

  • MPEG LA — the original HEVC patent pool administrator
  • Access Advance — absorbed Via LA’s HEVC and VVC pools in 2025, now holds roughly 80% of essential HEVC patents
  • Velos Media — the third, smaller HEVC patent pool

The licensing complexity has had a direct, visible effect on browser support: Chrome and Firefox both declined to ship default HEVC playback for years specifically because of the royalty cost, something H.264 and AV1 never faced. That only began to change in the 2024–2026 window, and even now HEVC support in Chrome and Firefox is often conditional on platform and available hardware decode rather than universal. For a DAM handling HEVC-native camera footage — which is most iPhone and many professional camera exports by default — that gap means an H.264 or AV1 delivery proxy is still often necessary for guaranteed browser playback, even though HEVC itself is the more storage-efficient archival choice.

Frequently asked

Is HEVC the same thing as H.265?

Yes, they're the same codec — H.265 is the ITU-T name and HEVC (High Efficiency Video Coding) is the more commonly used descriptive name, also published as MPEG-H Part 2 by ISO/IEC.

Why is HEVC licensing considered more complicated than H.264's?

Because essential HEVC patents are split across as many as three separate pools — MPEG LA, Access Advance, and Velos Media — rather than one, which is the well-documented reason the industry created the royalty-free AV1 codec as an alternative.

Why don't all our team's browsers play HEVC video from our DAM the same way?

Because HEVC browser support has been inconsistent and only recently added — Safari has supported it natively since 2017, but Chrome and Firefox only added default playback support in the 2024–2026 window, and even then it can depend on the operating system and available hardware decoder.

Do we need to pay for HEVC playback on Windows?

Windows' own Movies & TV and Photos apps historically required purchasing a separate "HEVC Video Extensions" add-on from the Microsoft Store unless the PC manufacturer pre-licensed it. VLC sidesteps this entirely with its own built-in decoder that doesn't rely on the OS codec.

Is footage from an iPhone usually HEVC?

Yes — HEVC (paired with the HEIC image format) has been the default capture and encode format on Apple devices since iOS 11 and macOS High Sierra in 2017, so most iPhone video ingested into a DAM today arrives as HEVC by default unless the user changed the camera's format setting.

Should we keep an H.264 proxy alongside HEVC masters for web delivery?

Generally yes, given HEVC's uneven and only recently improved browser support — keeping an H.264 or AV1 delivery proxy alongside an HEVC archival master avoids playback failures for viewers on browsers or devices without HEVC support.

How much smaller is HEVC than H.264 for the same footage?

Roughly half the bitrate is needed for comparable visual quality, which is why HEVC is attractive for storage-heavy 4K or HDR archival masters despite its licensing and compatibility complications.

Has HEVC licensing changed recently?

Yes — in 2025, Access Advance absorbed Via LA's HEVC and VVC patent pools, consolidating around 80% of essential HEVC patents under one administrator, and introduced a new rate structure effective 2026 running through 2030, so organizations licensing HEVC at commercial scale should check current terms rather than relying on older published rates.

Sources