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       Video Compression & Conversion                         

File Formats     File Converters      

How video is compressed is good stuff to know - especially if you are compressing for the web - or just a good thing to understand.   With HD, YouTube, Google Video, and displaying video on the web, compression has become an important topic for videographers.

Uncompressed video can occupy an enormous amount of hard drive space. That is why video gets compressed - 1 hour of SD uncompressed video takes up about 26 gigs of space  If you wrap in an AVI wrapper (which is what  generally happens when you capture video from a camcorder), it gets reduced in size down to about 13 gigs / hour.

Codec's have become very important - if you have an ipod or itouch or similiar devices, FLV (Flash video files) will not play and you will need to convert them to mpeg 4 formats - like AVCHD H264) and MP4.

Editing systems handle different compression (codec's) differently - some high end editing systems can not edit 24p - while a cheapie may handle all the codec's well.  Age of the editing system obviously plays a role - but is not always the determiner.

New cameras are coming out and they have memory cards or hard drives, and each camera may use it's own compression. Now the question us videographers must ask is "Can my editing system edit that compression along with other compression formats - all on the same timeline ?"

And not only that, but then when you take it to the web, which codecs should you use ?

  File Conversion  Programs  
     
  Table of Conversion for various codecs  
   
   
Encoding Programs  
  Exporting video for the web
       Using Windows Media Encoder
       Using Adobe Media Encoder
       QuickTime
       FLASH (swf
       Real Player
       DIVX
      Sorenson Squeeze
      Apple Compressor
Encoding using FLASH
 
     
     
CODECS and Format Glossory - ways of compressing video images  
  H.264  
  Mpeg4  
  M2V  - .m2v  
  On2 VP6  
     
     
Recording Formats - media capable of storing video data  
  JPEG  
     
  HD  
  HDV  
  HDAVC   
  DVProHD  
     
  DV  
  DVCam   
  DVPro  
  DVPro50  
     
Video Signals or Frame Rate Recording
  720/60p, 720/30p, 720/50p, 720/25p, 720/24p, 1080/60i, 1080/50i, 1080/25p, 1080/30p, 1080/24p  
     
     
     
     
     
     
Interfaces - ways of moving media data from one device to another
  Firewire  
USB2
  Component (RCA)  
S-VHS
  Composite  
  SDI  
  SDI-HD  
  SDMI  
  HDMI  
     
     
Encoding for YOUTUBE  
  YouTube with Windows Media Encoder   
  YouTube with QuickTime   
  YouTube with Flash  
  YouTube with Soreneson  
     
  Setting up Windows Media Player on a Web Page