4 ms·

It's a shame the royalty-free VP9 wasn't also included in this comparison.

by asb 11y ago

Someone1234 11y ago
You might find this an interesting read (PDF): http://infoscience.epfl.ch/record/200925/files/article-vp9-submited-v2.pdf http://infoscience.epfl.ch/record/200925/files/article-vp9-s...
- agrover 11y ago
  tl;dr vp9 is competitive with h.264 but not h.265
  - ultramancool 11y ago
    It seems a lot closer to h.265 than h.264, but still worse than it in all trials here. Give them another revision or two, they can probably beat it.
    - sp332 11y ago
      How do the complexity requirements compare? H.265 decoders have memory for lots of previous frames, but VP9 could be at a handicap if the format limits backward references to just a few frames.
    - asb 11y ago
      VP10 is in active development, though I don't know how far along it is.
  - ZeroGravitas 11y ago
    Real tl;dr: We downloaded a random git commit a year before a release was made and claimed it was officially released. Best case scenario, we don't understand the difference between a spec and implementation being finalized. Worst case: intentional hatchet job.
- TD-Linux 11y ago
  This paper is quite old and has known problems with setting a constant quantizer for VP9. The results do not match my own findings comparing libvpx and x265 at all [1]. libvpx VP9 is still worse than x265, but the difference is quite small. [1] https://arewecompressedyet.com/ https://arewecompressedyet.com/
jsprogrammer 11y ago
BBC apparently does not consider VP9 to be a major video coding standard. >The High Efficiency Video Coding (HEVC) standard has been developed jointly by the two standardisation bodies ITU and ISO (as has been the practice with all major video coding standards in the past 3 decades);
- clouddrover 11y ago
  And that's probably the right call for the BBC. Hopefully they'll get behind the NetVC [1] effort and support that in the future. The NetVC codec is to be built from Daala and Thor, and maybe VP10 as well. To complement NetVC there's also the Alliance for Open Media [2], but I'm a bit disappointed that the only public output from AOMedia so far seems to be a press release from September last year. 1. https://datatracker.ietf.org/wg/netvc/documents/ https://datatracker.ietf.org/wg/netvc/documents/ 2. http://aomedia.org/ http://aomedia.org/
anonymfus 11y ago
But there are no software patents in UK so all these formats must be free for BBC until they will use patented dedicated hardware.
- TD-Linux 11y ago
  >But there are no software patents in UK This has never been true for video. Even as far back as MPEG-2, the MPEG-LA has had GB patent numbers (as well as most other European countries).
- dogma1138 11y ago
  The software doesn't really matter all of these encoders will have hardware implementations which will incur royalties.
Veratyr 11y ago
Moscow State University has a more broad test (including VP9) here if you're interested: http://compression.ru/video/codec_comparison/hevc_2015/MSU_HEVC_comparison_2015_free.pdf http://compression.ru/video/codec_comparison/hevc_2015/MSU_H...

It's a shame the royalty-free VP9 wasn't also included in this comparison.

by asb 11y ago

It's a shame the royalty-free VP9 wasn't also included in this comparison.

You might find this an interesting read (PDF): http://infoscience.epfl.ch/record/200925/files/article-vp9-submited-v2.pdf http://infoscience.epfl.ch/record/200925/files/article-vp9-s...

agrover 11y ago
tl;dr vp9 is competitive with h.264 but not h.265
- ultramancool 11y ago
  It seems a lot closer to h.265 than h.264, but still worse than it in all trials here. Give them another revision or two, they can probably beat it.
  - sp332 11y ago
    How do the complexity requirements compare? H.265 decoders have memory for lots of previous frames, but VP9 could be at a handicap if the format limits backward references to just a few frames.
  - asb 11y ago
    VP10 is in active development, though I don't know how far along it is.
- ZeroGravitas 11y ago
  Real tl;dr: We downloaded a random git commit a year before a release was made and claimed it was officially released. Best case scenario, we don't understand the difference between a spec and implementation being finalized. Worst case: intentional hatchet job.
TD-Linux 11y ago
This paper is quite old and has known problems with setting a constant quantizer for VP9. The results do not match my own findings comparing libvpx and x265 at all [1]. libvpx VP9 is still worse than x265, but the difference is quite small. [1] https://arewecompressedyet.com/ https://arewecompressedyet.com/

jsprogrammer 11y ago

BBC apparently does not consider VP9 to be a major video coding standard. >The High Efficiency Video Coding (HEVC) standard has been developed jointly by the two standardisation bodies ITU and ISO (as has been the practice with all major video coding standards in the past 3 decades);

clouddrover 11y ago
And that's probably the right call for the BBC. Hopefully they'll get behind the NetVC [1] effort and support that in the future. The NetVC codec is to be built from Daala and Thor, and maybe VP10 as well. To complement NetVC there's also the Alliance for Open Media [2], but I'm a bit disappointed that the only public output from AOMedia so far seems to be a press release from September last year. 1. https://datatracker.ietf.org/wg/netvc/documents/ https://datatracker.ietf.org/wg/netvc/documents/ 2. http://aomedia.org/ http://aomedia.org/

anonymfus 11y ago

But there are no software patents in UK so all these formats must be free for BBC until they will use patented dedicated hardware.

TD-Linux 11y ago
>But there are no software patents in UK This has never been true for video. Even as far back as MPEG-2, the MPEG-LA has had GB patent numbers (as well as most other European countries).
dogma1138 11y ago
The software doesn't really matter all of these encoders will have hardware implementations which will incur royalties.

Veratyr 11y ago

Moscow State University has a more broad test (including VP9) here if you're interested: http://compression.ru/video/codec_comparison/hevc_2015/MSU_HEVC_comparison_2015_free.pdf http://compression.ru/video/codec_comparison/hevc_2015/MSU_H...