H.264 / AVC
- Compression
- Reference (100)
- Licensing
- Patent pool; free for free web video
- Best for
- Sharing with anyone, old devices
No codec wins at everything. HEVC compresses well and plays on almost any recent device; AV1 compresses a little more and is royalty-free; H.264 still works everywhere.
Bitrate needed for similar quality (H.264 = 100)
How big would your video be with each? Try the bitrate calculator.
The most useful comparison, because these are the two codecs you will find in almost every file. In the reference study by Ohm, Sullivan et al. (IEEE, 2012), HEVC needed 35 % less bitrate by PSNR and 49 % less in subjective viewer tests. Later JCT-VC/BBC tests averaged 59 %, and 64 % at 4K: the higher the resolution, the bigger the advantage.
The trade-off: H.264 plays on absolutely everything, including browsers and devices from 2010, with no licensing hurdles on Windows. If you send a video without knowing the recipient's device, H.264 is still the safe bet.
| Aspect | HEVC | AV1 |
|---|---|---|
| Efficiency | Very good | Slightly better (≈ 20-30 % less bitrate in most tests) |
| Licensing | Several pools, per-device royalties | Royalty-free |
| Hardware decoding | Since 2015-2016 | Since 2020-2021 (RTX 30, Intel 11th gen, RX 6000, Apple M3/A17 Pro) |
| TVs and Blu-ray | Virtually every 4K TV | Recent TVs |
| Software encoding speed | Faster (x265) | Slower (SVT-AV1 has improved a lot) |
| Who uses it | Apple, cameras, 4K Blu-ray, broadcast, satellite | YouTube, Netflix, Twitch, Discord, video calls |
VP9 is Google's open codec (2013), AV1's predecessor. It compresses a little less than HEVC and is used mostly on YouTube and Android. VVC (H.266) is HEVC's successor: around 50 % more efficient according to JVET tests, with tools for 8K, 360-degree video and screen content. Device rollout has just begun with some 2025-2026 phone chips.
Depending on what you want to do
Made up your mind? Convert video explains how to turn your files into HEVC or HEVC into H.264.
For compression, yes: at the same quality it needs 35 % to 50 % less bitrate depending on the study. For compatibility H.264 wins; every device from the last fifteen years plays it.
AV1 compresses slightly more and is royalty-free, which is why YouTube and Netflix use it. HEVC has wider support in TVs, cameras and Blu-ray, and encodes faster. For your own videos, both are fine if your devices play them.
VVC or H.266 is HEVC's successor (2020). It compresses around 30-50 % better, but in 2026 almost no consumer device plays it yet.