Prototyping 2013-11-05 (Lens Based Media): Difference between revisions

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[[file:interframe.gif|500px|right|thumb|intra- vs. interframe compression]]
[[file:interframe.gif|600px|right|thumb|intra- vs. interframe compression]]


==  Codec ==
==  Codec ==

Revision as of 17:13, 4 November 2013

Compression & Codecs in video

(File)Format or Container is the shipping box, codec is the goods inside the box.

Format

  • determines the way audio and video streams (and other metadata) are stored inside the file
  • Examples are :
    • .avi (Microsoft -> OLD)
    • .wmf (Microsoft -> Unflexible)
    • .mov (Apple -> supports a lot of codecs)
    • .ogg (Open Source -> but not very well supported by editing software)
    • .mkv (Open Source -> but not very well supported by editing software)
    • .mp4 (works on virtually all platforms)


intra- vs. interframe compression

Codec

  • Intraframe compression
    • Compresses each frame (with for instance JPG compression)
    • No effective size compression
    • High Quality
    • Easily readable by edit software
    • Apple ProRes, DNxHD (Avid)
  • Interframe Compression Looking at delta Frames
    • Compress BETWEEN frames
    • effective size compression
    • Not easy for edit software
    • Use for sharing -> final output
    • MPEG-2 (DVD's, hardware players), DivX (downloads), H264 (currently has best quality vs. file ratio)


FYI: Uncompressed HD video = 400GB per hour More Info [1]

Tools


Workflow & Delivery

Glitch Art

Data moshing

Download Finished

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