Encoder Bit Stream Controls

I PERIOD (GOP Size)

I PERIOD defines the period, in frames, of the I-frames. This is also known as the GOP size, that is the number of frames in a Group Of Pictures.

You can select the GOP size by using the GOPSize element. By default, the value of GOPSize is 30.

Encoded Bit Stream Structure

On Picolo U4 H.264 PCI-104, the encoded bit stream is structured as follows:

Note: Each GOP starts with an IDR slice preceded by SPS and PPS NAL Units allowing an H.264 decoder to start decoding anywhere in the stream.