microsoft.public.win32.programmer.directx.video Google Group

Programming an Analog TV and FM Radio Tuner Card.

z...@rubicom.hu (Zoge) — Sat, 02 Jan 2010 11:28:49 UT

Hi All!
I have an analog TV Tuner Card, which has an FM radio built-in as well.
I started learning DirectShow, but I am stuck at the begining.
There are so many Interfaces and methods. It seems too confusing.
I have the following questions (I am only going to write about TV now):
I want to display the TV screen in my application window.

Re: Why does VMR7 work on Win7?

j...@giantsoft.com (John Doe) — Fri, 01 Jan 2010 22:07:56 UT

I did many tests with various capture/tuner cards. They all suffer from some
kind of a "preview pin problem", or crashing.
DirectShow filters of Pinnacle and Hauppauge cards usually where crashing even
when used in graph edit application. Some other cards worked fine at first
sight, but I experienced problems when I plugged multiple cards (same

Re: Dependancies for WMV

nob...@nowhere.in.the.net (Alessandro Angeli) — Fri, 01 Jan 2010 20:22:01 UT

You need v11 of the runtime, not v11 of the SDK. v11 of the
SDK includes the runtime installer (just use 7-Zip or WinRAR
to unpack the SDK installer to extract the redist
installer), but the runtime is also installed by e.g.
WindowsMediaPlayer.
At any rate, the statement you quoted is incorrect: the WMVA

Re: Dependancies for WMV

n...@null.co.uk (Richard) — Fri, 01 Jan 2010 15:55:15 UT

Thanks Alessandro - that gives me plenty to get started with. :)
One quick question - I just noticed on the home page for "Windows Media
Format 11 SDK" it says "New for this release is the Windows Media Video 9
Advanced Profile codec, which provides optimizations for broadcast video."
I would sometimes need to encode high definition 1920x1080 video frames, and

Re: Dependancies for WMV

nob...@nowhere.in.the.net (Alessandro Angeli) — Fri, 01 Jan 2010 14:16:33 UT

You should understand that the SDK only contains docs,
samples and .h/.lib files. It does not contain the runtime,
which is part of Windows. Of course, using the runtime
without the WMF SDK is limited since you don't have the .h
files for the non-standard DirectShow interfaces.
The layering of the WMF runtime is the following:

Re: How to change the field order dinamically

sta...@devnull.com (Stanza) — Fri, 01 Jan 2010 12:40:09 UT

There are two possible ways.
You would need to buffer samples and combine odd-numbered lines with even
numbered lines from the previous input frame (i.e. the fields) or vice
versa. You would probably have to discard the first and final field aswell.
You may also have to tweak the sample timestamps because you would

Re: Dependancies for WMV

n...@null.co.uk (Richard) — Fri, 01 Jan 2010 12:00:31 UT

Thanks. The MSDN page for ASF Writer says it is a "wrapper for the writer
object provided with the Windows MediaT Format SDK", so presumably I would
have to install the Windows Media Format SDK before I would be able to use
the ASFWriter? And the "Windows Media Audio and Video Codec Interfaces" SDK

Re: Dependancies for WMV

nob...@nowhere.in.the.net (Alessandro Angeli) — Thu, 31 Dec 2009 20:53:48 UT

No, it's not. You need the "Windows Media Format" SDK and
the "Windows Media Audio and Video Codec Interfaces" SDK.
You need to use v9.0 or v9.5 of the WMF SDK I think.
That will allow you to encode using any version of the WMV
codecs, including v11 (as long as you install the new
version of the runtime).

Re: open source and commercial AAC libraries?

nob...@nowhere.in.the.net (Alessandro Angeli) — Thu, 31 Dec 2009 20:36:44 UT

The GPL does not differentiate between static linking by the
linker or dynamic linking by the system loader.
It is because the license is different: MS's EULA allows you
to dynamically link to them without the GPL constraints (but
with other constraints that however are less problematic).
If your application statically or dynamically links to the

Re: Dependancies for WMV

tuv...@gmail.com (tuvman) — Thu, 31 Dec 2009 20:32:33 UT

VS2003 is fine. Just attach the ASF Writer filter to the end of the
graph.
best,
Tuviah

Dependancies for WMV

n...@null.co.uk (Richard) — Thu, 31 Dec 2009 19:20:02 UT

I'm currently developing using MFC in Visual C++ 2003 and a DirectX SDK from
Feb 2005 (I think it was the last version to include the DirectShow SDK).
I'm not sure about the platform SDK version but I guess this would have been
supplied with VC++ 2003.
Am I right in assuming that this is too old to start adding the ability to

Re: open source and commercial AAC libraries?

avan...@gmail.com (babgvant) — Thu, 31 Dec 2009 13:04:20 UT

My read of the GPL is that it's only viral if you use the code
directly or link to it. DS filters are dynamically loaded at runtime,
using this filter isn't any different from using the MS filters
included in Windows.
If you ship the filter in your application you will need to have the
source on hand if someone requests it though.

Global Warming and what you can do to against it

sustainable.future...@gmail.com (..) — Thu, 31 Dec 2009 12:25:51 UT

Dear All,
As you know global warming is endangering the future of life on the
planet. It will also affect us;
rising sea levels, dwindling water supplies, mass deaths due to heat
waves, stoppage of the gulfstream, which
brings milder climate to north of Europe, super hurricanes, less food
due to droughts are some of the effects.

Re: AVstream & USB Webcam

t...@probo.com (Tim Roberts) — Thu, 31 Dec 2009 04:27:50 UT

If you package your H.264 frames inside an MPEG2 Transport Stream, then
usbvideo.sys will handle it.

Re: Thanks Tim

t...@probo.com (Tim Roberts) — Thu, 31 Dec 2009 04:13:06 UT

You asked about debugging your apps. OutputDebugString is the user-mode
API that writes to the debug log, just like DbgPrint and KdPrint do in
kernel mode.