mpeg-4 – Make Me Engineer

Fetching the dimensions of a H264Video stream

July 19, 2022 by Tarik

NO!!! You must run a complex function to extract video dimensions from Sequence Parameter Sets. How to do this? Well first you must write your own Exp-Golomb decoder, or find one online… in live555 source code somewhere there is one for example… Then you must get one SPS frame. It has NAL=0x67 (NAL is the … Read more

How to process raw UDP packets so that they can be decoded by a decoder filter in a directshow source filter

June 18, 2022 by Tarik

Peace of cake! 1. Get the data As I can see, you already know how to do that (start RTSP session, SETUP a RTP/AVP/UDP;unicast; transport, and get user datagrams)… but if you are in doubt, ask. No matter the transport (UDP or TCP) the data format is mainly the same: RTP data: [RTP Header – … Read more