🍋
Menu
Video

H.264

Advanced Video Coding (AVC)

The most widely used video codec, balancing compression efficiency with broad hardware and software compatibility.

Техническая деталь

Video h.264 relies on temporal and spatial redundancy. Intra-frame compression (I-frames) encodes complete images, while inter-frame compression (P-frames, B-frames) stores only the differences between frames. H.264/AVC remains the most compatible codec. H.265/HEVC achieves ~40% better compression but has patent licensing costs. VP9 (royalty-free, Google) and AV1 (royalty-free, Alliance for Open Media) offer similar or better compression. AV1 encoding is ~10x slower than H.264 but decoding is efficient on modern hardware.

Пример

```
Video codec comparison (1080p, 1 minute):

  H.264 (AVC):  ~15 MB @ 2 Mbps   — universal support
  H.265 (HEVC): ~10 MB @ 1.5 Mbps  — 40% smaller, patent costs
  VP9:          ~10 MB @ 1.5 Mbps   — royalty-free (Google)
  AV1:          ~8 MB  @ 1 Mbps     — royalty-free, best quality

  Encoding speed: H.264 > VP9 > H.265 >> AV1 (10x slower)
```

Связанные инструменты

Связанные термины