Author: Min Wang

H.264 profile-level-id in sdp: profile-level-id = 428014  ( remember SDP use hex, wiki/h264 they use decimal ) profile_idc 0x42 == 66 so it is Baseline profile profile-iop 0x80 mean constraint_set0_flag=1 (so…

https://www.italiancpp.org/2016/11/02/coroutines-internals https://www.boost.org/doc/libs/1_70_0/libs/coroutine2/doc/html/index.html https://theboostcpplibraries.com/boost.coroutine https://www.netways.de/en/blog/2019/04/04/modern-c-programming-coroutines-with-boost/ https://blog.panicsoftware.com/coroutines-introduction/ https://blog.panicsoftware.com/your-first-coroutine/ https://blog.panicsoftware.com/co_awaiting-coroutines/   https://en.cppreference.com/w/cpp/language/coroutines  

Pytoch is a quite powerful, flexible and yet popular deep learning framework. The learning curve could be steep if you do not have much deep learning background. So what is…

debian 10 have nvidia GPU driver, cuda 9 etc, it is a good thing  for deep learning ( keras or pytorch). but  if let it running for some time (…

How gdb generally works In a debugging session, when the debugger wants to set a breakpoint, it replaces an instruction by int3 When the trap instruction (0xCC on x86) is executed,…

Some notes about C++ lamba capture, shared_ptr/weak_ptr, they are not quite obvious! (1) lambda capture implement it is simply just put the captures as members either by copy or reference.…

shared_ptr is some sort of confusing especially why we need atomic_store, atomic_load on that. It is NOT thread safe. In fact,  the primary intended use of std::shared_ptr is letting multiple threads…

First of all, shared_ptr can be a nullptr.  Nothing wrong passing a null shared pointer. In fact, a null shared pointer is an actual Null Object, which means that it’s designed…

SRTP RFCs and h.235 is Not an easy read. Here is my very high level beriefing: AES Encryption (1) AES is the foundation for both srtp and h.235.6 secured rtp…

RabiitMQ implement the  AMQP protocol. written in Erlang. it is a quite useful message broker or message middleware. It works like this: sender or receiver can create different type of…