Forum posts for realplay.exe

How Can I Hook a Youtube Video (Flash Player?) To Slow Down Playback?

The only good software I know which can decelerate and accelerate the playback of a YouTube video in any browser without first downloading it (because that would be cumbersome), is Enounce MySpeed.

Unfortunately, this software is not free, and my trial version ran out. I was playing around with its registry settings and noticed a few keys:

ProgramsToHook: iexplore.exe;firefox.exe;plugin-container.exe;chrome.exe;safari.exe;opera.exe;maxthon.exe;feeddemon.exe;realplay.exe;flvplayer.exe;flv player.exe;flock.exe;adobe media player.exe
UseFlashAdapter: 1
LLModules: ole32.dll;nspr4.dll;chrome.exe;realplay.exe;objb3201.dll;oleaut32.dll;rpflashplayer.dll
ModulesToIntercept: flash10*;flash9*;npswf32.dll;gcswf32.dll;fldbg10*;flashplayer.3.1.1k.ocx;adobe media player.exe


Based on the names and values of these registry keys, I'm guessing the MySpeed software hooks some function(s) in the listed modules (but modules are or aren't the same as DLLs?..) and does so for each process listed in ProgramsToHook. This is what I don't understand. What is the concept of the MySpeed software. Obviously it's hooking something, but I'm not too familiar with the intricacies of Windows hooks so I came to ask you experts. I'm thinking if I can understand how this hook process works, I can make my own version of the software using EasyHook, which is a fantastic .NET library to perform user-mode and kernel-mode hooks.

I thought that Windows user-mode hooking goes something like this. You choose one function in one DLL, and you intercept that function (a.k.a hook) in one process you want. If you want to hook the DLL in multiple processes, you just have to repeat the procedure for each process.

And then kernel-mode hooking is just choosing one function in one DLL and intercepting that function in every process that calls it (hence kernel-mode). But surely there are tons of ways to hook; I'm not too sure on whats the difference between these two hooks and DLL injection either.

So the point is, I'd like to know how MySpeed works. What is their hooking concept? If I can know this then I can make such a software in .NET!

Thanks in advance.

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How Can I Hook a Youtube Video (Flash Player?) To Slow Down Playback?