Writing Your Own AVI Files

The reason why I deal with AVI-Files is the following: I have a program that does any (long) calculation, and the output is immediately displayed (a function graph). After each step I can save the current window content as bitmap, and after the calculation I added all the bitmaps to an AVI (using VFD.EXE). But the bitmaps take a lot of room, (up to some G-Bytes). Therefore I wanted to create a AVI-File, and add the frames immediately when they are displayed.

The vfw.h reads like a binary file, and so I have tried to press the sample WriteAVI into a C++-class. I don't want to documentate the source code in detail, just add WriteAVI.cpp and WriteAVI.h to your project and use the class.

Some problems there are still with that class:

  1. The user will be prompted to select a compression method, it should be choosen automatically or by parameter.
  2. I create DIB's (not compressed) for adding to an AVI-stream. The resulting AVI-File is not compressed even when I choose a compression method.
  3. The time for a frame is fix.

If anybody knows how to fix the problems please send me a mail, so that everybody can benefit from it.


Then these few lines will create your own AVI-file:

CAVIFile avi("test.avi");
for (int i=0; i<=20; i++)
{
CBitmap bmp;
... // fill with data
avi.AddFrame(bmp);
}
if (avi.IsOK())
AfxMessageBox("AVI created");
else
AfxMessageBox("Error");

You see writing AVI-Files is easy (now).

Download source - 4KB



Comments

  • There are no comments yet. Be the first to comment!

Leave a Comment
  • Your email address will not be published. All fields are required.

Top White Papers and Webcasts

  • Live Event Date: October 29, 2014 @ 11:00 a.m. ET / 8:00 a.m. PT Are you interested in building a cognitive application using the power of IBM Watson? Need a platform that provides speed and ease for rapidly deploying this application? Join Chris Madison, Watson Solution Architect, as he walks through the process of building a Watson powered application on IBM Bluemix. Chris will talk about the new Watson Services just released on IBM bluemix, but more importantly he will do a step by step cognitive …

  • Managing your company's financials is the backbone of your business and is vital to the long-term health and viability of your company. To continue applying the necessary financial rigor to support rapid growth, the accounting department needs the right tools to most efficiently do their job. Read this white paper to understand the 10 essentials of a complete financial management system and how the right solution can help you keep up with the rapidly changing business world.

Most Popular Programming Stories

More for Developers

Latest Developer Headlines

RSS Feeds