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What is the difference between H.264 and x.264?

I'm new to video compression; but I see many of the terms repeated over and over again. I'm wondering what's the difference between x.264 and libx264 and H.264?

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AbdulMomen عبدالمؤمن Avatar asked Oct 14 '13 09:10

AbdulMomen عبدالمؤمن


1 Answers

H.264 is video encoding method, an alias name for MPEG-4 AVC compression, also known as MPEG-4 Part 10, defined in joint ISO/IC and ITU specification "Information technology — Coding of audio-visual objects — Part 10: Advanced Video Coding".

The specification is freely available here: http://www.itu.int/rec/T-REC-H.264-201304-I/en

x264 is a library implementing video compression and producing H.264 compatible stream.

See also:

  • What is ffmpeg, avcodec, x264?
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Roman R. Avatar answered Dec 23 '22 04:12

Roman R.