Thread View: borland.public.cppbuilder.multimedia
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Started by Hugh W Stewart
Fri, 24 May 2002 21:01
Multimedia programming
Author: Hugh W Stewart
Date: Fri, 24 May 2002 21:01
Date: Fri, 24 May 2002 21:01
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I am a converted C programmer, struggling with multimedia. I am developing an application that includes audio and video clips. I use MCI functions. My problem is that I want the clips to start as specified times, but since the data must be loaded from files, it takes time to get them started. My thought is to have the files loaded into memory, and play them from there. Great idea, if I knew how to do it. Any and all help will be gratefully received. Thanks in advance HughStewart@usa.net
Re: Multimedia programming
Author: Michael Warner
Date: Sat, 25 May 2002 17:01
Date: Sat, 25 May 2002 17:01
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On Fri, 24 May 2002 17:01:40 -0400, Hugh W Stewart <hughstewart@usa.net> wrote: >I am a converted C programmer, struggling with multimedia. >I am developing an application that includes audio and video clips. >I use MCI functions. My problem is that I want the clips to start as >specified times, but since the data must be loaded from files, it takes >time to get them started. >My thought is to have the files loaded into memory, and play them from >there. I'm not very familiar with the MCI interface, but is it possible to start and immediately pause the clips? If so, you could do this well ahead of schedule, then unpause them at the desired moment.
Re: Multimedia programming
Author: Hugh W Stewart
Date: Sat, 25 May 2002 19:18
Date: Sat, 25 May 2002 19:18
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Thanks - actually that's what I'm doing now. I use MCIWinCreate to open the files in separate TStreams, and start them when I'm ready. It's really awkward, and I'd really like to play them from memory. I just don't know how to tell MCIWinCreate to use a memory location instead of a file. Thanks for your interest. Michael Warner wrote: > I'm not very familiar with the MCI interface, but is it possible to > start and immediately pause the clips? If so, you could do this well > ahead of schedule, then unpause them at the desired moment.
Re: Multimedia programming
Author: Corey Murtagh
Date: Sat, 25 May 2002 22:45
Date: Sat, 25 May 2002 22:45
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"Hugh W Stewart" <hughstewart@usa.net> wrote in message news:3CEFE3A0.B9496C15@usa.net... > Thanks - actually that's what I'm doing now. I use MCIWinCreate to open > the files in separate TStreams, and start them when I'm ready. It's > really awkward, and I'd really like to play them from memory. I just > don't know how to tell MCIWinCreate to use a memory location instead of > a file. I've just had a brief wander through the MCI functions and macros in the PSDK. Looks to me like you can pre-open the file using an IAVIFile object, then pass the file to your MCI window using MCIWndOpenInterface. Of course being COM, it's likely to not be that simple. Anyone done it this way? Comments? -- Corey Murtagh The Electric Monk "Quidquid latine dictum sit, altum viditur!"
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