The real problem is that after decoding you have realtime video stream with bandwidth of several gigabits per second (up to 10.2 Gbit/s, but average's about 3 G

The real problem is that after decoding you have realtime video stream with bandwidth of several gigabits per second (up to 10.2 Gbit/s, but average's about 3 Gbit/s if I'm not mistaken), you have to either store or encode.