High Efficiency Video Coding

Article summary

High Efficiency Video Coding (HEVC), also known as H.265 and MPEG-H Part 2, is a patent-encumbered video compression standard designed as part of the MPEG-H project as a successor to the widely used Advanced Video Coding (AVC, H.264, or MPEG-4 Part 10). The standard was published in 2013. In comparison to AVC, HEVC can be used to achieve from 25% to 50% better data compression at the same level of video quality, or substantially improved video quality at the same bit rate. For example, standard 4K video capture at 30 frames per second typically requires a target bitrate of approximately 50 Mbps using HEVC, requiring roughly 22.5 GB of storage volume per hour, compared to the 100 Mbps and 45 GB per hour required by older H.264 profiles. It supports resolutions up to 8192×4320, including 8K UHD, and unlike the primarily eight-bit AVC, HEVC's higher-fidelity Main 10 profile has been incorporated into nearly all supporting hardware. The High Efficiency Image Format (HEIF) is a container format whose default codec is HEVC. While AVC uses the integer discrete cosine transform (DCT) with 4×4 and 8×8 block sizes, HEVC uses both integer DCT and discrete sine transform (DST) with varied block sizes between 4×4 and 32×32.

Key claims

1. publication date: 2013 — source: Wikipedia · confidence 0.95
2. publication date: 2013-06-07 — source: Wikipedia · confidence 0.95
3. publication date: 2015-01-12 — source: Wikipedia · confidence 0.95
4. publication date: 2013 — source: Wikipedia · confidence 0.95
5. publication date: 2017 — source: Wikipedia · confidence 0.95
6. release date: 1050 — source: Wikipedia · confidence 0.95
7. release date: 1070 — source: Wikipedia · confidence 0.95
8. release date: 2080 — source: Wikipedia · confidence 0.95
9. release date: 2013 — source: Wikipedia · confidence 0.95
10. release date: 2013 — source: Wikipedia · confidence 0.95
11. release date: 2014 — source: Wikipedia · confidence 0.95
12. release date: 2014 — source: Wikipedia · confidence 0.95
13. release date: 2013 — source: Wikipedia · confidence 0.95
14. release date: 2018 — source: Wikipedia · confidence 0.95

Discussion questions

1. Summarise the article in your own words. Which single claim would you verify first, and why?
2. The record states that the publication date is "2013". What evidence would count against this claim?
3. The record states that the publication date is "2013-06-07". What evidence would count against this claim?
4. The record states that the publication date is "2015-01-12". What evidence would count against this claim?
5. The record states that the publication date is "2013". What evidence would count against this claim?
6. The record states that the publication date is "2017". What evidence would count against this claim?
7. The record states that the release date is "1050". What evidence would count against this claim?
8. The record states that the release date is "1070". What evidence would count against this claim?
9. The record states that the release date is "2080". What evidence would count against this claim?
10. The record states that the release date is "2013". What evidence would count against this claim?
11. The record states that the release date is "2013". What evidence would count against this claim?
12. The record states that the release date is "2014". What evidence would count against this claim?
13. The record states that the release date is "2014". What evidence would count against this claim?
14. The record states that the release date is "2013". What evidence would count against this claim?
15. The record states that the release date is "2018". What evidence would count against this claim?
16. Which claim in this article is most likely to be revised as the sources update? How would you check its current status?
17. If two sources disagreed about one of these facts, what would you need in order to trust one over the other?

Bibliography

1. Wikipedia https://en.wikipedia.org/w/index.php?oldid=1378460848