Apple ProRes: Difference between revisions
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Apple ProRes is a family of video codecs used for storing and editing high definition video data in Apple's Final Cut Pro. Apple's official whitepaper lists the codec's key features as being: | Apple ProRes is a family of video codecs used for storing and editing high definition video data in Apple's Final Cut Pro. Apple's official whitepaper lists the codec's key features as being: | ||
* intra-only | * intra-only codecs | ||
* 4:2:2 / 4:4:4:4 source material | * 4:2:2 / 4:4:4:4 source material | ||
* 10-bit (12-bit for ProRes 4444) sample depth | * 10-bit (12-bit for ProRes 4444) sample depth | ||
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[[Category:Video Codecs]] | [[Category:Video Codecs]] | ||
[[Category:Undiscovered Video Codecs]] | [[Category:Undiscovered Video Codecs]] | ||
== Technical documentation on ProRes 422 Standard Definition / High Quality codec == | |||
ProRes 422 SD/HQ is the same codec operating on two different bitrates (flavours). Two different FOURCCs are used in order to indicate each flavour: | |||
{| border="1" cellpadding="5" style="border-collapse: collapse; border-style: dashed; border-color: #2f6fab;" | |||
|- bgcolor="#f0f0f0" | | |||
! Flavour name !! FOURCC !! Bitrate | |||
|- | |||
| align="center" | Standard Definition (SD) || align="center" | 'apcn' || align="center" | 145 Mbps | |||
|- | |||
| align="center" | High Quality (HQ) || align="center" | 'apch' || align="center" | 220 Mbps | |||
|} |
Revision as of 14:37, 30 September 2010
- FourCCs used to indicate different ProRes flavours in the QuickTime container:
- Apple ProRes 422 High Quality: 'apch' ('hcpa' in little-endian)
- Apple ProRes 422 Standard Definition: 'apcn' ('ncpa' in little-endian)
- Apple ProRes 422 LT: 'apcs' ('scpa' in little-endian)
- Apple ProRes 422 Proxy: 'apco' ('ocpa' in little-endian)
- Apple ProRes 4444: 'ap4h' ('h4pa' in little-endian)
- Company: Apple
- Whitepaper: http://images.apple.com/finalcutstudio/resources/white_papers/L342568A_ProRes_WP.pdf
- New Whitepaper introducing ProRes LT/Proxy/4444: http://images.apple.com/finalcutstudio/docs/Apple_ProRes_White_Paper_July_2009.pdf
- Samples: http://samples.mplayerhq.hu/V-codecs/HCPA/
ProRes Introduction
Apple ProRes is a family of video codecs used for storing and editing high definition video data in Apple's Final Cut Pro. Apple's official whitepaper lists the codec's key features as being:
- intra-only codecs
- 4:2:2 / 4:4:4:4 source material
- 10-bit (12-bit for ProRes 4444) sample depth
- variable bitrate
Technical documentation on ProRes 422 Standard Definition / High Quality codec
ProRes 422 SD/HQ is the same codec operating on two different bitrates (flavours). Two different FOURCCs are used in order to indicate each flavour:
Flavour name | FOURCC | Bitrate |
---|---|---|
Standard Definition (SD) | 'apcn' | 145 Mbps |
High Quality (HQ) | 'apch' | 220 Mbps |