Hi I am decoding a H.264 video using Nvidia's Graphics Card and Vaapi Library on Ubuntu 10.04. I am able to decode an entire video and display it using vaPutSurface, no problems at all. Now I need the data in RGBA format so I get the data in BRGA format which is supported in my implementation (I can convert it into RGBA). <div style="margin-left: 40px;"> VAImage vaimage; </div><div style="margin-left: 40px;"> unsigned char *imagedata = NULL; FILE *fp1; char file[100]; printf("%x\n",myimgfmt.fourcc); vastatus = pfn_vaCreateImage(vaapi->display,&myimgfmt,avcc->width,avcc->height,&vaimage); checkVaStatus(); pfn_vaGetImage (vaapi->display,va_surface_ids[current_surface],0,0,avcc->width,avcc->height,vaimage.image_id); checkVaStatus(); imagedata = (char *)malloc(vaimage.data_size*sizeof(char)); pfn_vaMapBuffer(vaapi->display,vaimage.buf,(void *)&imagedata); sprintf(file,"brga/frame%d.raw",framenumber++); fp1 = fopen(file,"wb"); fwrite(imagedata,vaimage.data_size*sizeof(unsigned char),1,fp1); fclose(fp1); free(imagedata); imagedata = NULL; vastatus = pfn_vaUnmapBuffer(vaapi->display,vaimage.buf); checkVaStatus(); vastatus = vaDestroyImage(vaapi->display,vaimage.image_id); </div> Everthing is working fine except that I am getting Segmentaion fault at vaDestroyImage. I am unable to correct this error. Can anybody help me with that ? Regards Varun