microsoft.public.win32.programmer.mmedia Google Group

Re: AVI

2010-03-11T22:56:25Z

You say "write AVIs" but you only mentioned readers. Read or
write? In any case, the AVI 1.0 syntax is trivial, you'd
better off writing your own code from scratch:
[link]
Supporting AVI 2.0/OpenDML is not much harder, just google
"opendml".
None, there is nothing useful.

AVI

2010-03-11T13:21:34Z

I want to learn to write AVIs. In particular, a program in C that shows
data like riffwalk and chunk.exe. And also a small video viewer. I have seen
rifwalk's source in C++ and it should be fairly easy to rewrite it in C
except for those namespaces at the end that use the scoping operator. I'm

Re: Unable to enumerate any media types on my filter's pins

2010-03-10T22:07:05Z

Multi-posted here:
[link]
Please do not multi-post.
See: [link]

Re: Unable to enumerate any media types on my filter's pins

2010-03-10T21:49:04Z

The registration info should *not* be added directly to the
registry but through IFilterMapper2::RegisterFilter () or
AMovieDllRegisterServer2().
The filter returns what's specified in the code, not what's
in the registry. It's up to you to make the 2 sets of
informations match (including the media types). The set in

Unable to enumerate any media types on my filter's pins

2010-03-10T20:52:01Z

I am in the process of developing a H.264 video encoder filter. I have added
the following registry entries in filter project's .reg file:
[HKEY_CLASSES_ROOT\Filter\{B2E 82896-5BD7-4299-B65D-8F95A011A 2E7}]
@="H264 Video Encoder Filter"
[HKEY_CLASSES_ROOT\CLSID\{B2E8 2896-5BD7-4299-B65D-8F95A011A2 E7}]

Re: Changing Filtergraph from within

2010-03-09T22:52:02Z

Do you need the "MPEG-2 Sections and Tables Filter" to be
connected to one of your source's output pins? If that's the
case, simply implement IStreamBuilder on your output pin.

Changing Filtergraph from within

2010-03-08T15:32:02Z

I have a filter (Source Filter) inside a filtergraph not controlled by me.
The application will add a MPEG 2 Demultiplexer to the filtergraph some time
after my filter but will not add a MPEG Sections and Tables Filter.
I need some info parsed from the MPEG 2 stream and would like to change the
filtergraph to add the parser filter.

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Re: How to discover is dshow filter can be used in graph?

2010-02-26T21:24:45Z

No there isn't. Only the filter knows whether it can accept
to work in a specific situation so the only way to know is
to try it in that situation. The info in the registry are
just hints and, even if the filter doesn't lie, those hints
are not enough to make a decision.
However you error simply means VFW_E_NO_ACCEPTABLE_TYPES. If

How to discover is dshow filter can be used in graph?

2010-02-26T06:13:31Z

I have a Samsung Omni 2 that has an H264 decoder that shipped with the
phone (one of the reasons I thought I wanted it). However, after much
trying and no real support from Samsung, I'm beginning to think they
have this filter locked down (if possible) to their own internal use.
I have a test application that captures video input and encodes using

Audio capture using winmm.lib ?

2010-02-25T18:33:06Z

Hi all,
Under Windows XP unsing Visual C++,
I need to capture on-the-fly audio data
from the sound card and/or analogic line-input
to a memory buffer (like a PC oscilloscope does)
I tried to use 'winmm.lib' and 'mmsystem.h' and
the functions of the 'waveIn' and 'waveOut' family,
with no efficient result so far.

Re: How to get current audio output and current video device

2010-02-23T08:53:29Z

User-or Kernelmode, what is
your target?
regards
K.

How to get current audio output and current video device

2010-02-22T04:08:01Z

Hi
I want to get the name of audio output and current video device, but WMI
may get
more than 2 devices that I do not know which is the audio output or current
video device, is there some good API can accomplish my requests ?
Thank you .

how can I select redording input using mcisendstring

2010-02-22T00:25:47Z

Hi All
I'm trying to write an app that uses mciSendString to record audio.
I've searched the web trying to find an example of how to allow the user to
choose which input source to use.
I can get a list of devices using waveInGetDevCaps. I can open some device
(looks like the microphone) and record audio using mciSendString("open new

Re: Which technology?

2010-02-18T18:18:06Z

There is no standard way, it depends on what DRM framework
we are talking about. If you mean WindowsMedia DRM for
WindowsMedia files, you should be able to read them just
like any other WM file, but you will only receive
decompressed data (which is what you want anyway).
In more detail, to read DRM'ed and non-DRM'ed WM files in