Glossary · Updated
What is codec?
Short answer
A codec is the method used to compress and decompress video or audio, such as H.264 or H.265. A container, such as MP4, is the file wrapper that holds the encoded streams. For broad compatibility, creators export H.264 video with AAC audio inside an MP4 file.
How is codec used in editing?
Codecs trade file size, quality and compatibility. H.264 is widely supported, and newer codecs can be smaller but need compatible players.
What mistakes do people make?
- Confusing codec and container
- Choosing an uncommon codec
- Re-encoding repeatedly
Where does this matter?
When you export from a Layers render or re-encode for upload. See export settings.
Frequently asked questions
Is MP4 a codec?
No, it is a container.
What is H.264?
A widely used video codec.
What is AAC?
A common audio codec.
Which should I choose?
H.264 in MP4 for compatibility.
Skills mentioned on this page
Layers
A full motion-graphics edit from one plain clip: words behind your head, plates, charts and cards.
All 4 skills for ₹999 · one-time, no subscription, no account needed
Buy all · ₹999- Pay once, keep it
- Instant download
- 7-day money-back if it won't run
Keep reading
Glossary
What is A-roll?
ReadGlossary
What is aspect ratio?
ReadGlossary
What is audio ducking?
ReadBlog
Best AI video editors for talking-head videos
Read
More in glossary or all 4 skills.