Stack Overflow
Stack Overflow

Questions tagged [samplegrabber]

The Sample Grabber filter is a directshow filter, which provides a way to retrieve samples as they pass through the filter graph. It is a transform filter with one input pin and one output pin. It passes all samples downstream unchanged, so you can insert it into a filter graph without altering the data stream. Your application can then retrieve individual samples from the filter by calling methods on the ISampleGrabber interface.

35 questions
0
votes
2 answers

SampleGrabber BufferLen size variation in C# and VB.NET

Is there any reason why the size of BufferLen in ISampleGrabberCB.BufferCB with the media subtype not set should vary if called from different programming languages? I have a C# app and a VB.NET app that both run a graph as quickly as possible with…
Mark Raishbrook
  • 147
  • 8
0
votes
2 answers

DirectShow Sample Grabber being called but 'this' in callback is NULL

I'm working on a basic implementation of a DirectShow filtergraph to get images from my webcam in my application. I've read the documentation and created a simple implementation. I create this graph: device --> samplegrabber -> nullrenderer. I'm…
roxlu
  • 83
  • 1
  • 8
0
votes
1 answer

c++ builder: convert video to png-snapshots with directshow

Thanks to your help I was able to search for the right words to use directshow a bit better. I found a tutorial how to use the SampleGrabber-object here: http://msdn.microsoft.com/en-us/library/windows/desktop/dd407288%28v=vs.85%29.aspx I could…
Julian
  • 493
  • 4
  • 22
0
votes
1 answer

Different approaches on getting captured video frames in DirectShow

I was using a callback mechanism to grab the webcam frames in my media application. It worked, but was slow due to certain additional buffer functions that were performed within the callback itself. Now I am trying the other way to get frames. That…
Jo Bell
  • 11
  • 5
-7
votes
1 answer

not load my website on facebook

sample link is : http://upfrontnews.us/news.php?id=24 when i put this link on facebook facebook not load this content for link and load other content i think this problem is about html
user3312995
  • 1
  • 2
1 2
3