I would like to port an ActiveX of mine (to Silverlight) that have the following features:
The current ActiveX uses DirectShow - unfortunately, it can t be used in Silverlight. How I can abandon the old ActiveX technology for the new Silverlight technology?
The simple answer is: you can t.
Silverlight is targeted at two main types of apps:-
Video editing doesn t really fall into either of these camps and is not catered for.
I m not sure its yet true to say the ActiveX is old, after all what technology is used to host the Silverlight Plugin in Internet Explorer? ActiveX.
I don t know if that s going to be easily doable. The various codecs natively available to Silverlight are all wrapped by the Silverlight MediaElement control, and so far as I can figure out, they re not directly exposed through an API, e.g., you can t get at the raw decoded RGBA bitstream. (If I m wrong on this, I d love to know, but I ve poked around, and I can t figure out how to do it.) The Mono source tree has a decode-only implementation of the Dirac codec, but nothing that would easily let you decode, e.g., WMV or AVI files, so far as I m aware.
And even if you could somehow grab the raw, decoded RGBA (or YCbCr) bitstream, so as to be able to insert whatever data you want into those frames, you d still have to re-encode the video stream as well, and Silverlight doesn t provide any native support for that. You d have to write your own encoders (not at all trivial), port them from the ffmpeg library (also not trivial), or wait for someone else to do it.
In short, my suspicion is that you re going to need to stick with your ActiveX solution for now -- though with some clever JavaScript coding, it might be possible to wrap that in a nice Silverlight UI.
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