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Flash performance worse with VDPAU
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grant123
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PostPosted: Mon Oct 13, 2014 5:23 pm    Post subject: Flash performance worse with VDPAU Reply with quote

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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tw04l124
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PostPosted: Mon Oct 13, 2014 6:08 pm    Post subject: Reply with quote

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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PostPosted: Tue Oct 14, 2014 12:12 am    Post subject: Reply with quote

How would you recommend I determine whether my flash performance is greater with or without VDPAU?
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tw04l124
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PostPosted: Thu Oct 16, 2014 9:59 am    Post subject: Reply with quote

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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PostPosted: Thu Oct 16, 2014 2:48 pm    Post subject: Reply with quote

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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PostPosted: Fri Oct 17, 2014 5:27 pm    Post subject: Reply with quote

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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