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Old 22nd November 2019, 20:11   #1161  |  Link
Adonisds
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Has anyone done a comparison of the quality of youtube VP9 vs Stadia VP9?
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Old 23rd November 2019, 19:13   #1162  |  Link
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YouTube will use ffmpeg with a streaming focused bitrate control. Easy to beat with constant quality focus. What is the main target of Stadia?
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Old 29th November 2019, 20:03   #1163  |  Link
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YouTube will use ffmpeg with a streaming focused bitrate control. Easy to beat with constant quality focus. What is the main target of Stadia?
FFMPEG is still using libvpx though isn't it?

It's a good sign that we are seeing so much competition so soon with AV1 encoders - the dearth of VP9 encoder competition until very recently stifled its chances of market penetration somewhat.
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Old 3rd December 2019, 03:54   #1164  |  Link
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FFMPEG is still using libvpx though isn't it?

It's a good sign that we are seeing so much competition so soon with AV1 encoders - the dearth of VP9 encoder competition until very recently stifled its chances of market penetration somewhat.
Just sucks because we're always playing leapfrog with CPU power. I got a ryzen 7 3800x with a nice upgrade path to a Ryzen 9 3950X in the future, but how fast is AV1 going to realistically get within that time before something -else- comes along, etc.

H.264 had a great run for sure, HEVC was hampered with all the political/patent BS and we've been stuck with marginally slow encoding VP9. H.265 browser support would have been nice.


it all gets so tiring I actually wish consumers had affordable FPGA options for encoders. There has to be a market somewhere out there worth tapping.
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Old 4th December 2019, 02:32   #1165  |  Link
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HEVC works perfectly in the primary browsers of macOS (Safari) and Windows (Edge).

Google chose not to implement HEVC decoding in Chrome, unfortunately. I'm not aware of exactly why (since hardware decoders exist for all modern systems that they could just hook into), but it may be theological reasons. Maybe it was the unknown liability for licensing a software fallback decoder.

They DID do this in Android.
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Old 4th December 2019, 23:10   #1166  |  Link
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HEVC works perfectly in the primary browsers of macOS (Safari) and Windows (Edge).

Google chose not to implement HEVC decoding in Chrome, unfortunately. I'm not aware of exactly why (since hardware decoders exist for all modern systems that they could just hook into), but it may be theological reasons. Maybe it was the unknown liability for licensing a software fallback decoder.

They DID do this in Android.
Actually HEVC did work in Firefox and Chrome initially, using the same passthrough-to-OS logic that enabled H.264. They later specifically blocked HEVC playback, even if an OS decoder was available.

It'd be a trival patch to remove the block. The net effect of the block is that there isn't any premium content HDR in browsers, since there is no broadly available HW with DRM 10-bit decoder in modern browsers.

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Old 4th December 2019, 23:14   #1167  |  Link
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Just sucks because we're always playing leapfrog with CPU power. I got a ryzen 7 3800x with a nice upgrade path to a Ryzen 9 3950X in the future, but how fast is AV1 going to realistically get within that time before something -else- comes along, etc.



H.264 had a great run for sure, HEVC was hampered with all the political/patent BS and we've been stuck with marginally slow encoding VP9. H.265 browser support would have been nice.





it all gets so tiring I actually wish consumers had affordable FPGA options for encoders. There has to be a market somewhere out there worth tapping.
Using F1 instances is a lot cheaper than buying a FPGA for experimentation.

https://aws.amazon.com/ec2/instance-types/f1/

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Old 6th December 2019, 02:07   #1168  |  Link
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Indeed ^^

I've been looking forward to trying out Socionext's FPGA AV1 encoder
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Old 18th December 2019, 09:21   #1169  |  Link
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Using F1 instances is a lot cheaper than buying a FPGA for experimentation.

https://aws.amazon.com/ec2/instance-types/f1/

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It's neat to know something like this exist, however it's not really feasible for my usage case due to a processing time / bandwidth required point of view. I need local hardware, ahh... beggars can't be choosers and all that
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Old 18th December 2019, 09:28   #1170  |  Link
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And a bit of a rando question, not sure whether this is ffmpeg specific or VPX/VP9 specific.

2-pass CRF is nice, I like it, and it actually seems to run a tad bit faster than a traditional 2pass, which bringing potentially better compression. However I'm also interesting in vbv/constained buffer values. I have found examples of how to do such in a regular 2-pass encode, but I cannot find anything that says whether it will/won't work if you try it with a 2pass CRF encode.

Can anyone elaborate on whether this would work, or how I could at least verify it with some test cases ? I'm worried if I specify anything other than b:v 0 it will fall back to some other mode, or not generally drop the bitrate below b:v X even if it can go lower than X
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Old 19th May 2020, 10:53   #1171  |  Link
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New upload (MSYS2; MinGW32 / MinGW64: GCC 10.1.0):

VPx v1.8.2-184-gf80e88872
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Old 20th May 2020, 21:17   #1172  |  Link
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New upload (MSYS2; MinGW32 / MinGW64: GCC 10.1.0):

VPx v1.8.2-184-gf80e88872
thx ... ;-)
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Old 15th July 2020, 14:25   #1173  |  Link
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New upload (MSYS2; MinGW32 / MinGW64: GCC 10.1.0):

VPx v1.8.2-219-g8c7142d77
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Old 3rd August 2020, 20:22   #1174  |  Link
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It's neat to know something like this exist, however it's not really feasible for my usage case due to a processing time / bandwidth required point of view. I need local hardware, ahh... beggars can't be choosers and all that
Also you can considere to use GCP Cloud computing. It is an alternative to EC2, but with the huge advantage that most likely google offers a better integration with VP9
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Old 3rd August 2020, 22:03   #1175  |  Link
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Also you can considere to use GCP Cloud computing. It is an alternative to EC2, but with the huge advantage that most likely google offers a better integration with VP9
Nope. EC2 is just renting VM time. Google Cloud's Compute Engine is the same thing. You get an instance, typically with some Linux distro on it. The rest is up to you.

If you want video transcoding as a service you have a lot of options, but that's separate from any conversation about EC2 vs the equivalent on GCP.
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Old 19th August 2020, 20:37   #1176  |  Link
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Apple appear to be rolling out VP9 suppprt across iOS, tvOS and MacOS/Safari.

Most of the news stories just say "4K Youtube support" but it appears to be via VP9.2 and hardware accelerated where the hardware supports it.

https://webkit.org/blog/11183/releas...y-preview-112/
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Old 20th August 2020, 02:44   #1177  |  Link
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Very exciting. I've had my Apple TV on the beta for awhile, but YouTube is still HD-only there. I wonder what Apple devices actually offer hardware VP9 decoding under the hood that's just been disabled all this time?
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Old 25th August 2020, 14:29   #1178  |  Link
LigH
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New upload (MSYS2; MinGW32 / MinGW64: GCC 10.2.0):

VPx v1.9.0-61-gc413c8f18
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Old 17th November 2020, 09:10   #1179  |  Link
LigH
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New upload (MSYS2; MinGW32 / MinGW64: GCC 10.2.0):

VPx v1.9.0-103-g3f7fee29e
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Old 2nd December 2020, 10:47   #1180  |  Link
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Is Google now actively killing 8k VP9?
A lot of videos only have AV1 as 8k option available, and I found reference to one a year back in a forum that clearly showed VP9 was still available at the time.
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