Can I create byte stream from network source?

Hot Topic

xpath
Can't set Focus
WMP 11 cannot connect to install??
newbie questions...gadget SDK
AACS protection has been hacked
Dll inside gadget
hello!! problem with web sidebar gadget
Does gadget support Netscape and Opera now?
filecache
Pre-command?

Audio and Video

DXVA 2.0 and Media Source
Flash movies
Layout for gadget
Version upgrade for gadgets
saveAs dialog
xmlHttpRequest on Vista Home
Gadget creep
How does MFT deliver Video Extended info to EVR?
window onBlur event firing while window is still focused
displaying a graphic using timecode in markup

Can I create byte stream from network source?

I want to create IMFByteStream instance using source resolver. When I use files on disk as the source URL, all is fine. But when I use network source ("mms://streaming_server/file.wmv") as source URL, the resolver's CreateObjectFromURL method fails with error code MF_E_UNSUPPORTED_SCHEME. I tried using "http:", instead of "mms:", but that fails too.

Is "mms:" or "http:" scheme not registered with MF by default

~ UK

Answer this question

Can I create byte stream from network source?

  • Andrew Baker

    It appears you're correct: Our net scheme handler plugin indeed does not allow you to create an IMFByteStream, only an IMFMediaSource. Given that, I don't think it's possible to do what you want the way MF stands today.

  • digitalsuperman

    Have you tried "rtsp://"


  • Tufelix

    Ok. I tried this code path today, but I still cannot get IMFByteStream instance. ( I tried all the three schemes of interest - http://, mms:// and rtsp://)

    In BeginCreateObject() call, I tried setting the flag value first to MF_RESOLUTION_BYTESTREAM, then to MF_RESOLUTION_MEDIASOURCE and then to 0. In all the three cases, I get back IMFMediaSource Object. EndCreateObject() returns object type as MF_OBJECT_MEDIASOURCE in all the three cases. Looks like default MF implementation is ignoring the resolver flag value :-(

  • Daikoku

    yes, I have. That fails too. What is more confusing is that if I want to create a Media Source for the same URL using source resolver, that succeeds. So it is clear that MF has the scheme handlers for the mentioned schemes.

    I also enumerated the supported schemes using MFGetSupportedSchemes(). It shows that MF indeed supports a bunch of schemes by default, including the "http:", "mms:", "rtsp:".

  • Catalin Zima

    All right, I'll give this a try and see what happens.

  • Scott Butler

    The MF Source Resolver should be picking up http://, mms://, and rtsp://.

    What if you try:

    IMFSchemeHandler *pSchemeHandler = NULL;

    MFCreateNetSchemePlugin( IID_IMFSchemeHandler, (void**) &pSchemeHandler );

    pSchemeHandler->BeginCreateObject( pwszYourURL, 0, NULL, NULL, NULL, pYourCallback, pYourState );

    ... etc



  • Can I create byte stream from network source?
Answer this question