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ref_iface_IVDXFilterPreview_SampleFrames
VirtualDub Plugin SDK 1.2
IVDXFilterPreview interface
Requests analysis of the entire source video stream.
void SampleFrames();
This method is not thread-safe.
Errors may not be returned from this function (see SetError()).
SampleFrames() is usually called in response to a user request to display information about the source video, such as an aggregate image histogram. It causes a series of source frames to be sent to the sampling callback specified by SetSampleCallback().
VirtualDub specific: This method causes UI to be displayed that allows the user to select from several modes for sampling the source video. The user can choose to only sample key frames or key frames at an interval to trade off speed for accuracy.
Copyright (C) 2007-2012 Avery Lee.
Setting up your development environment
Conventions
Plugin initialization
Dynamic loading
Reference counting
Using CPU extensions
Introduction
What's new
Breaking changes
Gotchas
Deprecated features
Migrating from the old Filter SDK
Programming model
Handling bitmaps
Creating a video filter
Setting filter parameters
Processing video frames
Managing filter data
Creating time-varying filters
Handling aspect ratio
Prefetching multiple source frames
Handling multiple sources
Making a filter configurable
Scripting support
CPU dependent optimization
VDXA index omitted
Getting started
Writing the module entry point
Creating a video filter
Adding configurability
Adding script support
Introduction
What's new
Autodetect
Direct mode
Video frames vs. samples
Video decodint model
Video decoder