raspivid doesn't include b-frames

Question

I'm streaming raw h264 using raspivid on Raspberry Pi 3 and PiCam v1 . However, even I set the h264 profile to main or high, stream only contains I and P frames. Here is the command that I use for starting stream over TCP;

raspivid --verbose --framerate 10 -b 1000000 --stats --intra 50 --inline --nopreview  -t 0 -l --output tcp://0.0.0.0:5001

When I parse the byte stream, I only see SPS,PPS,I-frames and P-frames. How can I make raspivid to add B-frames also?

Answer 1

Regarding the official answer on Raspberry Pi forum, it is not possible to include B-Frames into h264 stream since hardware encoder doesn't support it.