How can I get a video sequence from images in C++?

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Hello,

I would like to create an avi-file from a sequence of images. The images are stored as "cppBITMAP2.bmp" (during the loop the image gets updated). In this loop I want to create a video from these images.

What I have tried:

I found this: A simple interface to the Video for Windows API for creating AVI movies from individual images
Here, I tried to use the code without MFC from the comments but it did not work.

I copied the relevant part of my code (at least I think it is the relevant part) which uses the aviUtil.h file from the comment of the link):

SetDIBitsToDevice(_backbuffer,x,y,width,height, 0, 0, 0, (UINT)height,
     data, &bmi, DIB_RGB_COLORS);
 vbitmap = CreateDIBitmap(_backbuffer, &bmi.bmiHeader, CBM_INIT/*0*/, data,
     &bmi, DIB_RGB_COLORS);
 PBITMAPINFO bbitmap = CreateBitmapInfoStruct(this->_window, this-
     >_backbitmap);

 CreateBMPFile(this->_window, /*L*/"cppBITMAP2.bmp", bbitmap, this -
     >_backbitmap, this->_backbuffer);

 lpbi = (LPBITMAPINFOHEADER)GlobalLock("cppBITMAP2.bmp");
 ADD_FRAME_FROM_DIB_TO_AVI(lpbi, data, "DBI", 10);

Here, I get an access violation error and the created avi-File is empty. The lines for the bitmap creation work well. Did I call the

ADD_FRAME_FROM_DIB_TO_AVI

function wrong?

I am completely new to c++ and would be really grateful for your help.

Posted 3-Jun-19 10:59am

Member 14478761

Updated 4-Jun-19 11:35am

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KarstenK · Answer 1 · 2019-06-03T20:08:00

Solution 1

This isnt to hard, because AVI is a container format and you only need to init it and and some frames You may find some information in the article A class to easily generate AVI video with OpenGL and Video for Windows.

Tip: the first pixel of the first frame (so the top-left) is setting the transparent color.

Posted 3-Jun-19 20:08pm

KarstenK

Comments

Member 14478761 4-Jun-19 14:25pm

That is what I tried (I thought). START_AVI() and STOP_AVI(), which are also in my code, I just did not post it. The creation seems to work somehow because I can create the file but there is no data inside.

I read the link and tried the example but here I get many errors (I use VS 2013) so if the approach I tried can work I would prefer using this. Is it possible like that? Did I miss something important?

I have no idea about your hint. Is the "data" input wrong and I need to point to something else?

Member 14478761 · Answer 2 · 2019-06-04T11:36:00

Solution 3

I got the solution. I placed the code in the wrong place and misinterpret the error message.

Thank you for your help.

Posted 4-Jun-19 11:36am

Member 14478761

Comments

Member 15718771 18-Sep-22 9:22am

It would be nice to actually show the solution you got.