[M4IF Technotes] ´ð¸´:_[M4IF_Technotes]_solution_yuv2avi_?

[anna]

high 
think for your help i've modified my source like your
example . I ve in output a file avi akyio but the
color of the image are not the same that the original
séquence. the blue in the screen is now red and the
color are not the same. I believe that the problem are
in the video format . In your example you've wrote   
yuvfmtYV12[4]= 'Y''V''1''2'
are you sur that is the right value ? and what does't
mean these value? 
Best regards 
 --- lmwang <lmwang   brovic.com> a écrit : > You should
learn from the avilib API first,
> input_yuv is buffer which
> store YUV data and the three parameter is the buffer
> length.(WIDTH*HEIGHT*3/2)
> So you had to do like below, only pieces:(YUV,4CIF
> format,4:2:0)
> 
> FILE*  fpYUV;
> Char input_yuv[704*576*3/2]; // width*height*3/2
> 
> FpYUV = fopen("test.yuv","rb");
> 
> 
> Do {
> fread(input_yuv,1,704*576*3/2,fpYUV);
> AVI_write_frame(pAviHandle,input_yuv,704*576*3/2);
> }
> 
> fclose(fpYUV);
> 
> 
> Best Regards,
> Limin
> 
> -----????-----
> ???: technotes-admin   lists.m4if.org
> [mailto:technotes-admin   lists.m4if.org] ?? anna
> ????: 2003?4?10? 2:19
> ???: technotes   lists.m4if.org
> ??: [M4IF Technotes] solution yuv2avi ?
> 
> hi
> 
> i make this programme that is best than the other 
>  
> #include <string.h>
> #include "avilib.h"
> > 
> > void main(int argc,char argv[])
> > { 	
> 	char input_yuv[100]; 
>         avi_t*  pAviHandle;
> >  
> >  	char VideoFmtYV12[4] = 
> >  	{
> >  		'Y','V','1','2'
> >  	};
> >  
> > pAviHandle = AVI_open_output_file("anna.avi");
> >  	
> >       if(! pAviHandle)
> >  	{
> >  		printf("avi file open failed \n");
> >  		return -1;
> >  	}
> > 
> AVI_set_video(pAviHandle,352,288,25,VideoFmtYV12);
> >   strcpy(input_yuv,argv[1]);
> > 
> 	do {
> > 	    AVI_write_frame(pAviHandle,input_yuv,8);
> >  	} while(1)
> >  
> >  	// close open file
> >  	AVI_close(pAviHandle);
> > }
> > 
> 
> now i have the name of my input file in "input_yuv"
> the problem is in the function AVI_write_frame the
> compilator said that it 'is a few argument for this
> function. why i dont know ?
> the second question i must open the  input file with
> fopen or not before the function AVI_write_frame ?
> 
> thinks 
> 
> anna :)
> 
> 
> 
> 
> 
> 
> 
>  Hello  
> > 
> > think you for the answer , i've installed avilib
> and
> > i
> > create file .c. In your source i dont understand
> > where
> > i place the name for my file yuv. for example i
> have
> > "akiyo.yuv" input file et and i would to have in
> the
> > output "anna.avi":) . i give you an example  :
> > 
> > #include "avilib.h"
> > 
> > void main()
> > { 	
> >         avi_t*  pAviHandle;
> >  
> >  	char VideoFmtYV12[4] = 
> >  	{
> >  		'Y','V','1','2'
> >  	};
> >  
> > pAviHandle = AVI_open_output_file("anna.avi");
> >  	
> >       if(! pAviHandle)
> >  	{
> >  		printf("avi file open failed \n");
> >  		return -1;
> >  	}
> > 
> AVI_set_video(pAviHandle,352,288,25,VideoFmtYV12);
> >  
> > 	do {
> > 	    AVI_write_frame(pAviHandle,akiyo.yuv);
> >  	} while(1)
> >  
> >  	// close open file
> >  	AVI_close(pAviHandle);
> > }
> > 
> > I dont understand where i declared the path of my
> > input and output file . 
> > 
> > If it is possible give me an complete source for
> > this
> > programme that work. and why i will compile it.
> > 
> > think you for help :)
> > anna 
> > 
> >  
> >  
> > 
> > 
> > 
> > 
> >
>
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