Prototyping 2013-11-05 (Lens Based Media): Difference between revisions
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= Compression & Codecs in video = | = 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 | |||
* determines the way audio and video (and other metadata) are stored inside the file | |||
* Examples are : | * Examples are : | ||
** .avi (Microsoft -> OLD) | ** .avi (Microsoft -> OLD) | ||
| Line 16: | Line 13: | ||
Codec | == Codec == | ||
* Intraframe compression | * '''Intraframe''' compression | ||
** Compresses each frame (with for instance JPG compression) | ** Compresses each frame (with for instance JPG compression) | ||
** No effective size compression | ** No effective size compression | ||
| Line 24: | Line 21: | ||
** Apple ProRes, DNxHD (Avid) | ** Apple ProRes, DNxHD (Avid) | ||
* Interframe Compression [http://www.popmodernism.org/appropirate/delta.html| Looking at delta Frames] | * '''Interframe''' Compression [http://www.popmodernism.org/appropirate/delta.html| Looking at delta Frames] | ||
** Compress BETWEEN frames | ** Compress BETWEEN frames | ||
** effective size compression | ** effective size compression | ||
| Line 37: | Line 34: | ||
* ffmpeg (ffmpegX for a Mac gui version) | * ffmpeg (ffmpegX for a Mac gui version) | ||
* Mencoder | * Mencoder | ||
* Handbrake | |||
* Mpegstreamclip | * Mpegstreamclip | ||
* Adobe Media Encoder | * Adobe Media Encoder | ||
== Delivery == | == Workflow & Delivery == | ||
* [http://mashable.com/2010/06/03/youtube-i-am-sitting/| what happens when you upload to youtube?] | * [http://mashable.com/2010/06/03/youtube-i-am-sitting/| what happens when you upload to youtube?] | ||
Revision as of 16:23, 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)
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
Tools
- ffmpeg (ffmpegX for a Mac gui version)
- Mencoder
- Handbrake
- Mpegstreamclip
- Adobe Media Encoder
Workflow & Delivery
Glitch Art
Data moshing
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