Difference between revisions of "Codec"

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(Intermediate / Editing)
(Intermediate / Editing)
 
(6 intermediate revisions by the same user not shown)
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== Recording ==
 
== Recording ==
 
* AVCHD (Advanced Video Coding High Definition) is the file-based format for the digital recording and playback of high-definition video.  
 
* AVCHD (Advanced Video Coding High Definition) is the file-based format for the digital recording and playback of high-definition video.  
 +
** Canon XA20 was shooting 50.00i AVCHD (equivalent to 25p)
 
* Could also be mp4 instead.
 
* Could also be mp4 instead.
  
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* An Intermediate Codec is a video encoding format which is specifically designed to be used for editing and post-production.
 
* An Intermediate Codec is a video encoding format which is specifically designed to be used for editing and post-production.
 
* [[ProRes]] is apple only.  
 
* [[ProRes]] is apple only.  
& [[DNxHD]] is cross platform (by Avid) - Download codec: http://avid.force.com/pkb/articles/en_US/download/en423319
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* [[DNxHD]] is cross platform (by Avid) - Download codec: http://avid.force.com/pkb/articles/en_US/download/en423319
 +
 
 +
[[File:preludednxhd.png]]
 +
 
 +
* Canon XA20 Importing Example (from 50i AVCHD) - to transcode to DNxHD
 +
** 220X (bitrate, bigger the better, x means 10-bit colourspace which is better) 1080i (resolution, interlaced) 50 (framerate)
 +
** Framerate for interlace is always double that for progressive (p) cos it skips half the lines
 +
 
 +
[[File:preludednxhd2.png | 800px]]
 +
 
 +
** In prelude, I for in point and O for out point (so you only ingest what you need from each clip)
 +
** You can do a rough cut and edit metadata etc
 +
** After this it sends it to Adobe Media Encoder to do the transcoding (like a nice front end for importing video for use in premiere)
 +
 
 +
<pre>
 +
- Source File: /Volumes/K-01/PRIVATE/AVCHD/BDMV/STREAM/00001.MTS
 +
- Output File: /Volumes/Untitled/Projects/2014-03-17_14-38-55/00001.mxf
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- Preset Used: DNX 220X 1080i 50
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- Video: 1920x1080 (1.0), 25 fps, Upper
 +
- Audio: 48000 Hz, Stereo, 16 bit
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- Bitrate: Target 185 Mbps
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- Encoding Time: 00:00:16
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03/17/2014 03:03:26 PM : File Encoded with warning
 +
</pre>
  
 
== Output / Playback ==
 
== Output / Playback ==
 
* H.264 / Quicktime
 
* H.264 / Quicktime

Latest revision as of 15:10, 17 March 2014

Recording

  • AVCHD (Advanced Video Coding High Definition) is the file-based format for the digital recording and playback of high-definition video.
    • Canon XA20 was shooting 50.00i AVCHD (equivalent to 25p)
  • Could also be mp4 instead.

Intermediate / Editing

Preludednxhd.png

  • Canon XA20 Importing Example (from 50i AVCHD) - to transcode to DNxHD
    • 220X (bitrate, bigger the better, x means 10-bit colourspace which is better) 1080i (resolution, interlaced) 50 (framerate)
    • Framerate for interlace is always double that for progressive (p) cos it skips half the lines

Preludednxhd2.png

    • In prelude, I for in point and O for out point (so you only ingest what you need from each clip)
    • You can do a rough cut and edit metadata etc
    • After this it sends it to Adobe Media Encoder to do the transcoding (like a nice front end for importing video for use in premiere)
 - Source File: /Volumes/K-01/PRIVATE/AVCHD/BDMV/STREAM/00001.MTS
 - Output File: /Volumes/Untitled/Projects/2014-03-17_14-38-55/00001.mxf
 - Preset Used: DNX 220X 1080i 50
 - Video: 1920x1080 (1.0), 25 fps, Upper
 - Audio: 48000 Hz, Stereo, 16 bit
 - Bitrate: Target 185 Mbps
 - Encoding Time: 00:00:16
03/17/2014 03:03:26 PM : File Encoded with warning

Output / Playback

  • H.264 / Quicktime