Side by side
| H.264 (AVC) | H.265 (HEVC) | |
|---|---|---|
| Standardised | 2003 | 2013 |
| Efficiency | Baseline | Similar quality at a substantially lower bitrate |
| Typical IPTV use | SD and HD channels | 4K and some HD channels |
| HDR and 10-bit colour | Rare in practice | Common (Main 10 profile) |
| Device support | Almost universal | Most recent 4K devices; limited on older and budget devices |
| Decoding effort | Light | Heavier, so hardware decoding matters |
What “more efficient” means for you
A more efficient codec keeps the same picture quality with less data. That gives you:
- Less buffering on a modest connection, because each channel needs less bandwidth.
- Less data used on capped or mobile connections. See data usage.
- 4K that fits through normal broadband.
The trade-off is decoding effort. Without hardware support, H.265 overloads a device, and you get stutter or a black screen.
Choosing in practice
- 4K and HDR channels: H.265 is effectively required. Check your device supports it; see HEVC and IPTV.
- HD on a capable device: either is fine. Choose H.265 versions on a slower connection.
- Older or budget devices: prefer H.264 versions of channels for reliable playback.
If you’re buying a device for IPTV, choose one that decodes H.265 in hardware so both codecs are covered.
