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Avid Media Composer and Symphony ship with a wide range of old and modern codecs. They can also be downloaded free of charge for systems without Avid products installed.
Avid DV - SD codec used when exporting DV material
Avid MPEG2 50 - SD codec for MPEG 30, 40 or 50 material
Avid Meridien Compressed - SD codec for compressed material
Avid Meridien Uncompressed - SD codec used for 1:1 OMF outputs
Meridien Compressed has various compression ratios ranging from 2:1 (36 Mbps) to 35:1 (12 Mbps).
SD / HD codecs
Avid 1:1x * - 8-bit lossless 4:2:2 codec that produces very large file sizes
Avid Packed - Essentially the same as 1:1x except it supports 10-bit media
Avid RGBPacked - RGB version of the Packed codec
Avid DV100 - HD codec used for exporting DV100 media
* x normally refers to 10-bit codecs but in the case of Avid 1:1x it was used to designate MXF during the transition away from OMF
DNxHD is the most likely codec to be used in Media Composer. Each variant is named according to bitrate and bit depth, so for example DNxHD 120 means it's a 120 Mb/s 8-bit codec and DNxHD 185x means it's a 185 Mb/s 10-bit codec (the x indicates 10-bit).
Medium Quality Codecs
Similar Bitrate Codecs
Try to choose a codec that matches the bitrate of your acquisition format. All codec bitrates are calculated at 23.98 fps.
DNxHD 36 - DV, IMX40, XDCAM EX, XDCAM HD
DNxHD 60 - DV50, IMX50, Apple Intermediate @ 1080, XDCAM HD422
DNxHD 100 - AVC Intra 100, Cineform 444 @ 720, Digibeta
DNxHD 115 - Cineform 422 @ 1080
DNxHD 120 - DVCPRO HD, Motion JPEG @ 1080
DNxHD 145 - HDCAM
DNxHD 220 - Sony SR Lite
DNxHD 440 - Uncompressed 422 10-bit @ 720, Sony SR SQ, HDCAM SR
Approximate ProRes equivalents
All codec bitrates are calculated at 1080p 23.98 fps.
ProRes Proxy - DNxHD 36
ProRes LT - DNxHD 80
ProRes 422 - DNxHD 115
ProRes HQ - DNxHD 175x
ProRes 4444 - DNxHD 440x (444) (although ProRes 444 is actually closer in bandwidth to DNxHD 220)
Avid Media Composer 6 and higher can also wrap ProRes in an MXF wrapper. This is only available on the Mac version of Media Composer.
Calculating storage space