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Video Preservation Standards

Recommended for Media Archiving


STANDARD DEFINITION:
3⁄4” Umatic, DVCAM, DV, VHS, Laser Disk, Betamax, 1” video and 2” video sources:


MasterFile
Format/Extension: .mov

Compression: DV-NTSC (DV-25) 4:1:1
Resolution: 720x480 (DV 0.9 pixel ratio, actual display resolution 640x480) 
Frame Rate: 29.97 fps

Aspect Ratio: Match source (most are 4:3)
Field 
Dominance: Lower Field First 
Audio: 16-bit 48 kHz mono or stereo (match source) 
Audio Levels: Average digital reference level between -12 to -20 dB

Access (created from Master)
File Format/Extension: .mp4
Compression: MPEG-4 H.264 
Target Bitrate 1.2 Mbps, Maximum Bitrate 2 Mbps 
Resolution: 640x480

Frame Rate: 29.97 fps

Aspect Ratio: Match source
Field 
Dominance: Lower Field First 
Audio: AAC at 128 kbps 48 kHz mono or stereo (match source)

STANDARD DEFINITION:
Beta SP, Digital Betacam, 16mm and 8mm film sources:*

MasterFile
Format/Extension: .mov

Compression: DV50-NTSC (DVCPro-50)  4:2:2
Resolution: 720x480 (DV 0.9 pixel ratio, actual display resolution 640x480) 
Frame Rate: 29.97 fps

Aspect Ratio: Match source (most are 4:3)
Field 
Dominance: Lower Field First

Audio: 16-bit 48 kHz mono or stereo (match source, film mono) 
Audio Levels: Average digital reference level between -12 to -20 dB

Access (created from Master)
File Format/Extension: .mp4

Compression: MPEG-4 H.264 Target Bitrate 1.2 Mbps, Maximum Bitrate 2 Mbps 
Resolution: 640x480
Frame Rate: 29.97 fps
Aspect Ratio: Match source
Field 
Dominance: Lower Field First 

Audio: AAC at 128 kbps 48 kHz mono or stereo (match source, film mono)

*Note: All film sound must be captured whether optical, magnetic strip or full-coat magnetic. Any single reel can contain any of all combinations of these sound elements. Where it is not possible to capture all of these elements in one pass of the film reel, the missing sound elements must be captured separately and synchronized before creating the master file.

______________________________
High Definition Formats:

Transferring film sources to High Definition, HD video preservation formats:

MasterFile
Format/Extension: .mov
Compression: Apple ProRes (HQ)**
Resolution: 1920x1080 24p, 60i or 60p or 30p acceptable if telecine cannot do 24p 
Frame Rate: 23.98 fps or 59.94i or 59.94p or 29.97p fps

Aspect Ratio: 16:9 Pillar Box (4:3 material fits within the 16:9 frame with black bars on the sides)
Field Dominance: None for 24p, 60p or 30p, Upper Field First for 60i

Audio: 24-bit 48 kHz mono (16-bit 48 kHz minimum) 
Audio Levels: Average digital reference level between 

Access (created from Master)
File Format/Extension: .mp4

Compression: MPEG-4 H.264 
Target Bitrate 1.2 Mbps, Maximum Bitrate 2 Mbps 
Resolution: 640x360
Frame Rate: 29.97 fps

Aspect Ratio: 16:9

Field Dominance: None
 
Audio: AAC at 128 kbps 48 kHz

*Note: All film sound must be captured whether optical, magnetic strip or full
magnetic. Any single reel can contain any of all combinations of these sound elements. Where it is not possible to capture all of these elements in one pass of the film reel, the missing sound elements must be captured separately and synchronized before creating the master file.

**Note: Other native recording formats for editing systems other than Apple 
but should use a comparable data rate to ProRes (HQ). For example, a telecine connected to an AVID system may generate files using the DNxHD codec. These files should also be converted to ProRes (HQ). See the specs above for transcoding



updated 2017-01-30




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