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17th April 2023, 22:21 | #2 | Link |
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I wonder how much efficiency improvement were they able to achieve so far over AV1. I know the bitstream is not finalized, so the current version is not very usable in the long run, but i'd still like to try it out, so i'd appreciate if someone could share a windows build of this codec. I'm also curious about ECM.
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18th April 2023, 10:49 | #3 | Link |
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https://gitlab.com/AOMediaCodec/avm/...ines/839933609 I suggest this, though at the moment the deblocking is a bit destroyed.
aomenc.exe C:\Users\Use\Videos\cs.yuv --cpu-used=9 --threads=4 --min-qp=57 --width=1366 --height=768 --max-qp=124 -o C:\Users\Use\Videos\single.ivf - aomdec C:\Users\Use\Videos\single.ivf -o C:\Users\Use\Videos\csao.y4m ffmpeg.exe -i C:\Users\Use\Videos\csao.y4m C:\Users\Use\Videos\aua.png on i3 330m I can't decode more than one frame with yuv and aomenc Job Build (x86_64-mingw-gcc): [inspection-accounting] just search inspect and will appear |
18th April 2023, 20:59 | #4 | Link |
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Thank you! I've taken (x86_64-mingw-gcc): [nasm] from the latest main branch build, and after some DLL hunting, i managed to get it work.
The encoder crashes on most of my test clips, so i could only test it on some SD samples. So far it seems to be a few % more efficient than AV1, so from a purely technical standpoint, it's still quite far behind VVC, at least in SD stuff. |
5th May 2023, 20:25 | #5 | Link |
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experimental AV2 support added to avif: https://github.com/AOMediaCodec/liba...9316c5e273de82
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6th May 2023, 14:56 | #6 | Link | |
Artem S. Tashkinov
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Quote:
Now it's not? Now you can have AVIF images based on AV2 features and no existing application will be able to read them? |
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6th May 2023, 21:13 | #7 | Link |
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Its no different from having a MP4 file with a new video codec. Why redefine the container if it works?
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LAV Filters - open source ffmpeg based media splitter and decoders |
17th June 2023, 12:58 | #9 | Link |
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I've tested the latest build, and it's finally not crashing on higher resoulutions, so i could get a broader impression. Definitely a noticable improvement over AV1, detail retention and motion stability are both significantly better. The overall quality is pretty close to VVC, albeit much slower, but that is understandable for a work-in progress reference encoder. Interesting behaviour of the encoder is that if i dont specify keyframe intervals, the first keyframe will be encoded to a significantly higher quality, but it takes so much space that the overall quality for a given bitrate is always better if i set keyframe intervals (in my case 150).
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7th July 2023, 09:27 | #10 | Link |
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Its just conducted a study comparing AV1 and AV2 video codecs : https://codecwar.com/compare/av1-vs-av2
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7th July 2023, 12:53 | #11 | Link | |
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Need to log in to see the all graphs |
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10th October 2023, 17:37 | #12 | Link |
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How to use this for ffmpeg?
Code:
[libavm-av2 @ 0000028e412307a0] v5.0.0-76120a1 Output #0, webm, to 'output_avm.webm': Metadata: major_brand : isom minor_version : 512 compatible_brands: isomiso2avc1mp41 encoder : Lavf60.15.100 Stream #0:0(und): Video: av1, yuv420p10le(tv, progressive), 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 3000 kb/s, 29.97 fps, 1k tbn (default) Metadata: handler_name : VideoHandler vendor_id : [0][0][0][0] encoder : Lavc60.30.102 libavm-av2 Side data: cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A Stream #0:1(und): Audio: opus, 48000 Hz, stereo, flt, 128 kb/s (default) Metadata: handler_name : SoundHandler vendor_id : [0][0][0][0] encoder : Lavc60.30.102 libopus [vost#0:0/libavm-av2 @ 0000028e40f16e30] Error submitting a packet to the muxer: Invalid data found when processing input [out#0/webm @ 0000028e40dd67d0] Error muxing a packet |
28th November 2023, 09:23 | #13 | Link |
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Here is a list of the remaining european VC-1 patents and their expiry dates:
EP 1,528,812 - 2024-08-11 EP 2,290,991 - 2024-08-11 EP 1,661,387 - 2024-09-02 EP 1,656,793 - 2024-09-03 EP 1,656,794 - 2024-09-03 EP 1,658,726 - 2024-09-03 EP 1,665,761 - 2024-09-03 EP 2,285,113 - 2024-09-03 EP 2,285,114 - 2024-09-03 EP 2,285,115 - 2024-09-03 EP 2,323,398 - 2024-09-03 EP 2,323,399 - 2024-09-03 EP 2,323,406 - 2024-09-03 EP 2,451,161 - 2024-09-03 EP 2,466,894 - 2024-09-03 EP 2,466,895 - 2024-09-03 EP 1,549,064 - 2024-11-08 AV2 can use these in under 12 months if needed. Most european h264 patents expire by March 2024 too for the original spec of h264 that is. All Xvid patents have expired too. Last edited by hajj_3; 28th November 2023 at 09:40. |
28th November 2023, 21:15 | #14 | Link | |
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It also did a lot of early HEVC-like variable interprediction block size and shape stuff. And a decent overlap transform. I don't know how applicable any of that would be to AV2, however. It's been a long time since I lived and breathed VC-1 optimization. |
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29th November 2023, 09:42 | #15 | Link | |
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However, all these companies are already members of AOMedia (source), so AOMedia can already use their patents, even if they are not expired. Anyway you still have a point, especially for Samsung, who joined after AV1 specs was released, and their active patents may not be in AV1 but could eventually be included in AV2. EDIT: I checked, all patents you listed are all from Microsoft. Last edited by oibaf; 29th November 2023 at 09:51. |
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9th December 2023, 12:38 | #16 | Link | |
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