H.264 (AVC)

What is it?

H.264 is the most widely used video codec in the world — the method by which video is compressed so it can travel over the internet. A codec is like a packing technique: it shrinks a huge raw video into something small enough to send, and the viewer's device unpacks it back into a picture. H.264 is the packing technique that every device on earth understands.

Practical example

A creator streams from their phone; the video is compressed with H.264. It plays instantly on a 10-year-old laptop, a brand-new iPhone, a smart TV, and a cheap Android tablet — no "format not supported" errors anywhere. That universal compatibility is exactly why platforms still default to H.264 even though newer codecs compress better.

Key things to know (non-technical)

• The safe default: maximum compatibility, hardware support everywhere, battle-tested for ~20 years.
• Trade-off: it needs more data (higher bitrate) than newer codecs for the same picture quality.
• Almost all RTMP streaming and most live platforms are built around it today.
• When in doubt about what to support first: H.264.

In Tupic Live

Tupic Live should treat H.264 as its baseline codec — every creator device can encode it and every viewer device can play it, which matters most in a region with a wide mix of old and new phones.