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AVC-Intra is a type of video coding developed by Panasonic, and then supported in products made by other companies. AVC-Intra is available in Panasonic's high definition broadcast products, such as, for example, their P2 card equipped broadcast cameras.[1][2]

Technical details

In April 2007, Panasonic announced AVC-Intra codec support. The use of AVC-Intra provides production quality HD video at bit rates more normally associated with electronic news gathering applications, permitting full resolution, 10-bit field capture of high quality HD imagery in one piece camera-recorders.

AVC-Intra is compliant with the H.264/MPEG-4 AVC standard[2] and Panasonic claims to follow the SMPTE RP 2027–2007[3] recommended practice specification.[4] Analysis by the x264 project has shown that Panasonic does not comply with this specification[5]

AVC-Intra was intended for video professionals who have to store HD digital video for editing and archiving. It defines 10-bit intra-frame only compression, which is easy for editing and preserves maximum video quality. The technology significantly outperforms the older HDV (MPEG2 based) and DVCPRO HD (DV based) formats, allowing the codec in certain conditions to maintain better quality in half the storage space of DVCPRO HD.[citation needed]

AVC-Intra defines two classes:

Common to both classes;

Panasonic's implementation of AVC-Intra codec has following limitations: 8 × 8 transform only, 8 × 8 intra prediction only, 10 slices per picture, MBAFF for interlace material, custom quantization matrices for each class and each resolution.[6]


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The Panasonic AVC-Ultra family defines an additional three new encoding parameters within the MPEG-4 Part 10 standard, utilizing up to the 4:4:4 Intra Predictive Profile, as well as an additional low bitrate proxy recording mode.

The most efficient new parameter within AVC-Ultra is by Panasonic called, AVC-LongG. AVC-LongG enables compression of video resolutions up to 1920 × 1080 @ 23.97, 25 and 29.97p, with 10 bits of pixel depth at 4:2:2 color sampling, at data rates as low as 25 Mbit / sec.[7]

More over, the AVC-Intra Class 50/100 is now extended to Class 200 and Class 4:4:4. The Class 200 mode extends the bitrate to 226 Mbit / sec for 1080/23,97p, while the Class 4:4:4 extends the possible resolution from 720p to 4K with pixel depths at 10 and 12 bits.

The bitrate settings for Class 4:4:4 varies between 200 and 440 Mbit / sec depending on the resolution, frame rate and bit depth. Both the Class 200 and the Class 4:4:4 are Intra-only coding modes.

The AVC-Proxy mode enables extremely fast ENG content delivery and offline edits of 720p and 1080p video at bitrates varying between 800 Kbit to 3.5 Mbit / sec at 8 bits of pixel depth.

More recent information about AVC-Ultra (including the new 10-bit and 12-bit Class4:4:4, Class2K4:2:2, Class2K4:4:4, Class4K4:2:2, and Class4K4:4:4) is available on Panasonic's AVC-Ultra Page.

Third-party support

Several companies introduced AVC Intra codec semiconductor intellectual property cores.[24]


  1. ^ "AJ-HPX2000 brochure" (PDF). Retrieved 29 January 2008.
  2. ^ a b "AVC-Intra Frequently Asked Questions" (PDF). Panasonic. 20 September 2007. Retrieved 30 October 2013.
  3. ^ "SMPTE RP 2027–2007, "AVC Intra-Frame Coding Specification for SSM Card Applications"".
  4. ^ "AVC-Intra (H.264 Intra) Compression, Technical Overview" (PDF). Retrieved 29 January 2008.
  5. ^ a b "Git commit". x264 git. Archived from the original on 26 January 2016. Retrieved 9 January 2016.
  6. ^ "AVC-Intra Technical Overview by Panasonic Broadcast" (PDF) (in French). Archived from the original (PDF) on 20 July 2011.
  7. ^ Mullen, Stephen (October 2012). "Discover the benefits of AVC-Ultra". Tv Technology.
  8. ^ "Avid Announces Surge of Third-Party Integrations at NAB '09". Avid. Archived from the original on 23 April 2009.
  9. ^ "Final Cut Pro X Specifications". Apple.
  10. ^ "AVC-Intra QT". MXF4mac.
  11. ^ "EVS announces support of AVC-Intra".
  12. ^ "MainConcept SDKs". MainConcept. Archived from the original on 12 October 2010. Retrieved 24 September 2010.
  13. ^ "Omneon Server support for Panasonic's Advanced AVC-Intra HD format". Press release. 22 November 2007. Archived from the original on 5 June 2008. Retrieved 30 October 2013.
  14. ^ "Quantel demonstrates AVC-Intra". Archived from the original on 7 June 2008.
  15. ^ "Schweizer Fernsehen and tv productioncenter zürich (tpc) choose Quantel".
  16. ^ "V4 – for Enterprise sQ and Newsbox HD".
  17. ^ "Thomson's Grass Valley Boosts EDIUS Capabilities and User Interface".
  18. ^ "Supported import formats". Adobe.
  19. ^ "H.264/AVC Professional SDKs". Vanguard Software Solutions. Archived from the original on 5 October 2010. Retrieved 22 October 2010.
  20. ^ "VSS AVC-I Hardware Encoder" (PDF). Vanguard Software Solutions. Archived from the original (PDF) on 17 July 2011. Retrieved 22 October 2010.
  21. ^ "Git commit". FFmpeg git.
  22. ^ [dead link]
  23. ^ "GammaRED Engineering: SHINE Media Platform Overview".
  24. ^ "AVC-Intra Codec Search Result". Retrieved 8 October 2009.