ffmpeg(avconv) jpeg quality

conversion with good jpeg quality:

avconv  -i ./input.avi -q:v 1 output_frame_%05d.jpg

Fast way of copying byte array in C/C++ (With measurements)

I have the following code for copying several buffers from one object to another:

// Copy several buffers (images)
for( int i = 0; i < MIN( conf_.size(), src.conf_.size() ); ++ i )
{
   // Copy one image per pixel
   for( int j = 0; j < MIN( sizeOfBuffer_, src.sizeOfBuffer_ ); ++ j )
   {
      conf_[i][j] = src.conf_[i][j];
   }
}

Array conf_ is defined as follows:

std::vector<BYTE*> conf_;

BYTE is unsigned char. That code is written with no doubt about software performance. It just works. When I do so I hope compiler make it better for me.
This fragment takes about 45 ms for copying of 2 images with ( 1980x1080 pixels ) x 3 planes = 6.2 MPixels.
I use Microsoft Visual Studio 2008 compiler on Intel Core i7 950 @ 3.07 GHz. The code is built for x64 platform. Disabled compiler option for buffer security check (GS-) and debug information has no effect on the productivity.

Slightly better solution:

// Copy several buffers (images)
for( int i = 0; i < MIN( conf_.size(), src.conf_.size() ); ++ i )
{

   int sizeOfArray = MIN( sizeOfBuffer_, src.sizeOfBuffer_ );

   // Copy one image per pixel
   for( int j = 0; j < sizeOfArray; ++ j )

   {
      conf_[i][j] = src.conf_[i][j];
   }
}

It takes about 35 ms per full copy.

Much better solution: