Video

Video containers

Stores

• Video
• Audio
• Subtitles
• Metadata

MP4

• MOV is also just an mp4?
• Released: 2001

WebM

• Released: 2010

Video codecs

• H.264, HEVC/H.265
  • works in all browsers
• VP8/VP9
  • supported by all the browsers that support WebM
• AV1 codec
  • Compresses really well

Browser needs to support not the video codec and the video container Audio Codec

Replacing GIF

Why GIFs suck

• Large
  • Videos are a lot smaller
• Colors
  • 240 color limit
• No alpha transparency

Alternative to GIF

https://css-tricks.com/gifs-without-the-gif-the-most-performant-image-and-video-options-right-now

• video
  • Many src for diff encodings
  • Problem
    • Doesn't let your screen go to sleep
• Image
  • Webp
  • Avif

---

Last update: 2023-04-24