So I would need assistance in fixing an issue. On my old PC I have installed the newest version of Adobe FlashPlayer. On the PC HTML5 videos are fine, but flash videos are laggy and choppy on all browsers. I have an Intel Pentium Dual Core in the PC with 2Gb RAM. As I told this only happens on flash videos on downloaded, or HTML5 videos not. What could solve the issue? Would graphic card help (At the moment I don't have one in the PC)?
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BUMP! Please help
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TL;DR: If you're just downloading FLV videos and playing them locally, you'd probably have much better results using VLC, instead of dragging them into a browser window.
Flash Player is not a video player. It's a language runtime, similar to Java. You can build a video player on top of Flash Player, but Flash Player is not a video player itself.
More importantly, in order to get Flash Player to use hardware video acceleration, you need to use the StageVideo APIs. Flash Player pre-dates both H.264 and the widespread availability of hardware video decoding in commodity consumer hardware, and there's a lot of legacy content that depends on the original software-based video playback behavior. Long story short, you get software-based video playback, and you're experiencing CPU contention.
Alright! So would hardware video acceleration help? How can I use it?
You would need to build (or find) a video player built using ActionScript 3 and the StageVideo APIs, which would then load video files from your local filesystem. At that point, *if* the videos are encoded in conformance with the requirements that would allow them to be hardware accelerated, they would be. If they're not, then they would fall back to software encoding.
Seriously though, if you just want to watch videos that end with .flv, use a dedicated video player like VLC.
Of course for downloaded videos I use VLC but what shall I do with Facebook videos, which require flash player? Those videos are laggy And these videos do not run without flash player.
Keep in mind my note about how not all videos are encoded in a way that lets them be hardware accelerated, and not all video players are written to take advantage of hardware acceleration.
That said, *if* hardware acceleration should be used, but isn't -- it's usually because you've got a really old GPU, and either the hardware or drivers were buggy enough that we blacklisted a particular driver version, and/or the card itself.
In general, Facebook videos tend to be HTML5, but it depends, and it's constantly changing, so it's hard for me to make any informed statements there. You can figure out if it's Flash by right-clicking on the video. If it doesn't say About Flash Player at the bottom of the context menu, we're not playing the video.
First things first, make sure you're running the latest browser version and graphics drivers for your system. Also, the output of the DirectX diagnostic tool would give me a good inventory of your hardware and drivers. Both things are covered in the video troubleshooting guide, below. Make sure that you *do* have hardware acceleration enabled, although it should be on by default.
If that doesn't help, use Chrome, and go to chrome://gpu. Chrome has really good GPU diagnostics. It's also the case that if the browser blacklists a card or driver, it's not going to be available to us, either. If you can copy and paste the output of the chrome://gpu page, that would really help me understand what's going on.