How Video Works?

How Video Works?

5dc4abe3dc14c25021ff2295fc380d73?s=128

Flávio Ribeiro

December 02, 2017
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  1. 5.
  2. 6.
  3. 16.
  4. 23.
  5. 24.

    how pixels are represented? 1 bit (1 or 0) 2

    bits (11, 10, 01 or 00) 8 bits (you got that, right?)
  6. 25.
  7. 26.
  8. 27.
  9. 34.

    colored image 3 x 4 x 4 x 8 bits

    = 384 bits = 48 Bytes
  10. 39.
  11. 40.
  12. 41.

    3 x 1920 x 1080 x 8 bits x 24

    frames ≈ 149 MB
  13. 42.

    3 x 1920 x 1080 x 8 bits x 24

    frames x 60 minutes ≈ .5 TB
  14. 43.

    It would take… 04 days and 15 hours to download

    it in a 10 Mbps connection 11 hours to download it in a 100 Mbps connection
  15. 45.
  16. 50.
  17. 58.
  18. 63.
  19. 64.
  20. 66.
  21. 74.
  22. 83.
  23. 92.
  24. 93.
  25. 101.
  26. 102.
  27. 103.
  28. 104.
  29. 105.
  30. 106.
  31. 115.

    video images (frames) pixels colors RGB 24 frames bits lots

    of information compression exploit the eye
  32. 116.

    video images (frames) pixels colors RGB 24 frames bits lots

    of information compression exploit the eye reduce redundancy
  33. 117.

    video images (frames) pixels colors RGB 24 frames bits lots

    of information compression exploit the eye reduce redundancy correlations in time
  34. 118.

    video images (frames) pixels colors RGB 24 frames bits lots

    of information compression exploit the eye reduce redundancy correlations in time codec
  35. 119.

    video images (frames) pixels colors RGB 24 frames bits lots

    of information compression exploit the eye reduce redundancy correlations in time codec codec != container
  36. 120.

    video images (frames) pixels colors RGB 24 frames bits lots

    of information compression exploit the eye reduce redundancy correlations in time codec codec != container bitrate
  37. 121.

    video images (frames) pixels colors RGB 24 frames bits lots

    of information compression exploit the eye reduce redundancy correlations in time codec codec != container bitrate progressive download
  38. 122.

    video images (frames) pixels colors RGB 24 frames bits lots

    of information compression exploit the eye reduce redundancy correlations in time codec codec != container bitrate progressive download adaptive bitrate