# How to calculate bitrate of PAL?

I have to calculate the bitrate of PAL format $$\ (576*720)$$. I have the following data:

• $$\ 25$$ frames per second
• Interlaced
• Interior representation is: $$\ 4:2:0$$
• $$\ 8$$ bpp

I have tried the following formula but I am really not sure at all if it is correct because I have not clearly understood the difference between interlaced and non-interlaced video and how this difference changes the calculation fo the bitrate.

This is what I tried:

$$\ (576*720)*(1+1/4+1/4)*8*25$$

This part: $$\ (1+1/4+1/4)$$ is due to the specific representation $$\ 4:2:0$$

• Your field rate is 50 Hz and there are 2 fields in one frame, thus you have a frame rate of 25 Hz. So your equation is correct. – Ben Sep 16 '19 at 17:42