Thread: Writing an avi file!!Important

Hi EveryOne,

I am trying to write avi file, and am having problem. The problem that i am having is that i am send each frame, size and OutputAviFile to a function... Something like this. but i have to write more the one frame to the avifile. so when a add another frame it over write the old one. is there anyway to set a postion from where i can start writing

Code:

void avi_add(ofstream &OutputAviFile, unsigned char *buff, int size)
{
	DBBREAKS db;
	strcpy(db.db,"00db");
    db.size = size;
    OutputAviFile.write(reinterpret_cast<char *>(&db),sizeof(db));
	OutputAviFile.write(buff,db.size);	
}

ofstream fout (whatever.txt);

fout<<info;

fout.seekp(sizeof(info)+1);

fout<<moreInfo;

When you declare the ofstream variable, make it so it appends to the file and doesn't overwrite existing data. So, you could then do this:

Code:

ofstream AVI_FRAME("myAviFile.avi",ios::app);// append
avi_add(AVI_FRAME,someText,someSize);

Hope that helps!

Brendan