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grant123
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 Posted: Mon Oct 13, 2014 5:23 pm Post subject: Flash performance worse with VDPAU |
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I set VDPAU_DRIVER=va_gl to enable VDPAU/VAAPI acceleration. mplayer performance is much greater with acceleration enabled but flash performance is actually a bit worse according to the test here:
http://www.snailsanimation.com/benchmark08_play.php
Why would this happen? |
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Roman_Gruber
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| Posted: Mon Oct 13, 2014 6:08 pm Post subject: |
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is this your test? If not you may ask the person responsible for the test setup!
Are you talking about the mplayer? if so, why do not you ask at mplayer base? |
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grant123
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| Posted: Tue Oct 14, 2014 12:12 am Post subject: |
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| How would you recommend I determine whether my flash performance is greater with or without VDPAU? |
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Roman_Gruber
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Location: Austro Bavaria
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| Posted: Thu Oct 16, 2014 9:59 am Post subject: |
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That is my point. that is my concern why I asked.
How / why / is it reasonable / reproduceable
just checking a webpage means nothing. could be bad implemented / network could influence the result / gpu could be not in maximum mode / and other workloads influencing htis result.
Usually tests are made in test rows for 10 or 20 repetitive tests which are mathematically analyzed. and not even that test method is error proof to human error, wrong test method and so on ...
To sum it up, i will not trust a webpage which claims to say it can test the performance of flash. I am pretty sure there are many instructions in the gpu / cpu which are used for flash and other things which may influence the performance and ruin the test results. |
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grant123
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| Posted: Thu Oct 16, 2014 2:48 pm Post subject: |
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| How can I determine if my flash playback is being accelerated? With mplayer, the difference between accelerated and unaccelerated playback is night and day but I don't notice a difference with flash. Even fullscreen 720p flash is choppy but mplayer can do 1080p and never drop a frame. |
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netixen
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Joined: 26 Sep 2013
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| Posted: Fri Oct 17, 2014 5:27 pm Post subject: |
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Go to youtube, play a HD video, right click and check "stats for nerds".
If flash is using vdpau/vaapi you will see "accelerated video rendering, decoding".
You can play with the flashplugin options and look at the stats. |
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grant123
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| Posted: Thu Oct 23, 2014 8:02 pm Post subject: |
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If I do that in Chromium there is no such message because it seems to be using HTML5, but if I do it in Firefox it says flash rendering is accelerated but decoding is not. What might prevent accelerated decoding?
EDIT: "stats for nerds" is great. I can clearly see that my Flash performance is worse on youtube.com on two different systems with VDPAU/VAAPI enabled. I get a lot of dropped frames with it enabled and none with it disabled. |
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netixen
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Joined: 26 Sep 2013
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| Posted: Fri Oct 24, 2014 11:35 am Post subject: |
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Chromium uses a builtin module.
Firefox uses the system's adobe-flash plugin.
Did you enable hardware accelerated decoding in adobe-flash?
| Code: | | vi /etc/adobe/mms.cfg |
| Code: | # Enable hardware accell (can be unstable)
EnableLinuxHWVideoDecode=1 |
Did you follow:
http://wiki.gentoo.org/wiki/VDPAU
http://wiki.gentoo.org/wiki/VAAPI
or some other guide?
Does your video card fully support it?
What is the output of vdpauinfo/vainfo? |
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i92guboj
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Joined: 30 Nov 2004
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Location: Córdoba (Spain)
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| Posted: Fri Oct 24, 2014 12:11 pm Post subject: |
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More correctly, google-chrome, closed source, uses an embedded flash player. Chromium uses html5. I have no idea if chromium can use the adoble-flash system-wide plugin if available.
I made that clarification because there are many players into scene, and measuring one of the other will for sure yield quite different values. If you use google-chrome, google-chrome-unstable or google-chrome-beta, then, as far as I know, you will be using the embedded plugin that comes bundled with the browser. If you use anything else then you are either using the system-wide plugin from the adobe-flash ebuild OR html5, depending on the browser and/or the site.
I don't know if there are still bitness issues with this stuff in amd64. That's another thing to check, I suppose. |
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Chiitoo
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Location: Here and Away Again
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| Posted: Fri Oct 24, 2014 12:31 pm Post subject: |
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| i92guboj wrote: | | More correctly, google-chrome, closed source, uses an embedded flash player. Chromium uses html5. I have no idea if chromium can use the adoble-flash system-wide plugin if available. |
Isn't “pepper flash” available for Chromium via www-plugins/chrome-binary-plugins?
Not that it's the default, which you're probably talking about. Still, I figured it's worth a mention (or at least to clarify things to myself; I've tried it only once which was quite a while ago... not planning on trying again).
Edit:
Oh and I have a faint memory of being able to use the system-wide plug-in as well, though that could easily be false...
_________________
Kindest of regardses.
Last edited by Chiitoo on Fri Oct 24, 2014 12:34 pm; edited 2 times in total |
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i92guboj
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Location: Córdoba (Spain)
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| Posted: Fri Oct 24, 2014 12:33 pm Post subject: |
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| Chiitoo wrote: | | Not that it's the default, which you're probably talking about. Still, I figured it's worth a mention |
I have/had no idea, so you did well to mention it if only for the sake of completeness. |
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grant123
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Joined: 23 Mar 2005
Posts: 1080
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| Posted: Fri Oct 24, 2014 7:44 pm Post subject: |
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Did you enable hardware accelerated decoding in adobe-flash?
| Code: | | vi /etc/adobe/mms.cfg |
| Code: | # Enable hardware accell (can be unstable)
EnableLinuxHWVideoDecode=1 |
Thank you, that did it. I did read a guide or two and I thought I had followed them. Now I get smooth fullscreen 1080p flash video on youtube.com in Firefox, but since Chromium uses HTML5, performance there is still choppy. Can HTML5 video playback be accelerated? |
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netixen
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Joined: 26 Sep 2013
Posts: 31
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| Posted: Fri Oct 24, 2014 10:35 pm Post subject: |
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| grant123 wrote: |
Thank you, that did it. I did read a guide or two and I thought I had followed them. Now I get smooth fullscreen 1080p flash video on youtube.com in Firefox, but since Chromium uses HTML5, performance there is still choppy. Can HTML5 video playback be accelerated? |
No problem, usually I forget specifics quite fast, but did that particular dance a few months ago so it hasn't been purged from memory.
Help the next guy if you have the chance.
Read the link for HTML5 hardware acceleration in chrome, should be similar in chromium...
http://www.webupd8.org/2014/01/enable-hardware-acceleration-in-chrome.html |
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grant123
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| Posted: Tue Oct 28, 2014 2:21 pm Post subject: |
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You actually have to jump through some compile-time hoops to get acceleration working in chromium (so I suppose it can't be made to work in google-chrome at all):
https://code.google.com/p/chromium/wiki/LinuxHWVideoDecode
I get the same error described on that page:
| Code: | | ERROR:gpu_video_decode_accelerator.cc(301)] Not implemented reached in void content::GpuVideoDecodeAccelerator::Initialize(const media::VideoCodecProfile, IPC::Message *)HW video decode acceleration not available. |
https://bugs.gentoo.org/show_bug.cgi?id=527232 |
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