Midi to WAV with GraphEdit
Wed, 21 Nov 2007 20:53:22 -0000
I am thinking about building a utility to convert Midi (*.mid) files into
WAV files.
With GraphEdit I can play a Midi file out through the Midi Renderers and
wondered if there is a Midi Renderer that will produce a WAV file instead.
If it is possible can the graph be run faster that real time to convert the
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Getting Upstream PIN Output into an App Function
Wed, 21 Nov 2007 10:08:11 -0800 (PST)
I want to convert various compressed audio source to PCM for my
application.
I know I can write my own renderer and implement a custom interface to
have it pass me the PCM samples as they arrive from upstream.
Q1) Is there a better, simpler way to do this? (e.g. Perhaps I can
create just an input pin with ...
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Gaps between audio samples
Wed, 14 Nov 2007 21:21:58 +0100
Hi all,
I'm writing an audio rendering filter based on the dump renderer sample, and
I am already receiving all samples correctly from the source filters and can
copy their content and place the copies in a buffer for later processing.
When I however inspect the time stamps of the audio samples that arrive ...
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SampleGrabber for audio spectrum
Wed, 14 Nov 2007 02:58:27 -0800
Hi guys,
I'm developing a player that render any kind of compatible file audio
and show a audio spectrum. To do this I use DirectShow, so I create a
graph, I render the file using Intelligent Connect and then I put my
sample grabber between sound renderer and decompressor/source. Before
I connect it, I precon ...
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Problem with audio samples
Wed, 07 Nov 2007 07:55:24 -0800
Hello,
I have created a switching filter that has:
- 1 input pin for audio samples;
- 1 input pin for video samples.
- 2 output pins for audio samples;
- 2 output pins for video samples.
The input pin class is derived from CBaseInputPin.
The output pin class is derived from CBaseOutputPin.
This fil ...
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Mp3 codec and Vista
Tue, 6 Nov 2007 06:37:02 -0800
Hello,
Is there any good MP3 codec for Vista?
I am making an application with the DirectShow SDK and noticed that there is
no Mp3 codec on Vista.
Thanks
...
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MP3 Encoder in Quartz.dll
Wed, 31 Oct 2007 02:00:01 -0700
How do I use the MP3 encoder that is lurking in Quartz.dll ? OK, so I can
build a graph with how do I configure it (e.g. sample rate, bit rate, etc) ?
There's no config in GraphEdt (I have registered PropPage.dll) and tried
guessing some suitable interface names (IMP3xxx, IMPEG3xxx, IMPEG-3xxx, and
others) ...
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Re: Reading audio samples immediately
Mon, 29 Oct 2007 19:11:55 -0800
[I've been away some weeks on vacation]
Jerry wrote:
>
> Even the converters have an internal latency, so you are never just one
> sample behind. It was the case that you could be 30-50 samples behind.
Interesting; and of course nothing we can overcome through our
programming or an improved system interfa ...
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Audio Pin Connection
Fri, 26 Oct 2007 05:47:02 -0700
Hi,
I have a directshow source filter which pushes audio from its output pin. It
pushes 2 channel 16 pit PCM audio stream.
I used all the same settings in a different filter before. While the
previous filter can connect to the DirectSound Device, this new filter can
not..
My audio pin exposes IAMStreamCon ...
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Re: sample grabber bufferLen
Fri, 26 Oct 2007 02:51:01 -0700
Thank for your answer,
now i use the stream-time to synchronize with the other application. When
the input is a Live-Source i predict beats and use a changeable delay value.
Still there is a problem, i do not know if this is the right place to ask.
If i use regsvr32 to register the filter on my system it work ...
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