Hello guys,
Continuing from this guide to building ffmpeg and libav with NVENC and VAAPI enabled, this snippet will cover advanced options that you can use with ffmpeg and libav on both NVENC and VAAPI hardware-based encoders.
For ffmpeg:
Preamble:
In this post I will explore how to stream a video and audio capture from one computer to another using ffmpeg and netcat, with a latency below 100ms, which is good enough for presentations and general purpose remote display tasks on a local network.
The problem:
Streaming low-latency live content is quite hard, because most software-based video codecs are designed to achieve the best compression and not best latency. This makes sense, because most movies are encoded once and decoded often, so it is a good trade-off to use more time for the encoding than the decoding.
| package main | |
| import ( | |
| agwd "github.com/sclevine/agouti" | |
| tbwd "github.com/tebeka/selenium" | |
| "log" | |
| sgwd "sourcegraph.com/sourcegraph/go-selenium" | |
| ) | |
| // Helper for sourcegraph/go-selenium |
This is a story about how I tried to use Go for scripting. In this story, I’ll discuss the need for a Go script, how we would expect it to behave and the possible implementations; During the discussion I’ll deep dive to scripts, shells, and shebangs. Finally, we’ll discuss solutions that will make Go scripts work.
While python and bash are popular scripting languages, C, C++ and Java are not used for scripts at all, and some languages are somewhere in between.
For a brief user-level introduction to CMake, watch C++ Weekly, Episode 78, Intro to CMake by Jason Turner. LLVM’s CMake Primer provides a good high-level introduction to the CMake syntax. Go read it now.
After that, watch Mathieu Ropert’s CppCon 2017 talk Using Modern CMake Patterns to Enforce a Good Modular Design (slides). It provides a thorough explanation of what modern CMake is and why it is so much better than “old school” CMake. The modular design ideas in this talk are based on the book [Large-Scale C++ Software Design](https://www.amazon.de/Large-Scale-Soft
What would you need:
Hardware requirements
| `` | |
| // | |
| // Created by Razak Zakari on 12/04/2018. | |
| // | |
| #define BASE64_VARIATION sodium_base64_VARIANT_ORIGINAL | |
| #include <algorithm> | |
| #include <math.h> | |
| #include <vector> |
| cd /home/<user>/ | |
| sudo apt-get install unzip | |
| wget https://dl.google.com/android/repository/sdk-tools-linux-4333796.zip | |
| unzip sdk-tools-linux-4333796.zip -d Android | |
| rm sdk-tools-linux-4333796.zip | |
| sudo apt-get install -y lib32z1 openjdk-8-jdk | |
| export JAVA_HOME=/usr/lib/jvm/java-8-openjdk-amd64 | |
| export PATH=$PATH:$JAVA_HOME/bin | |
| printf "\n\nexport JAVA_HOME=/usr/lib/jvm/java-8-openjdk-amd64\nexport PATH=\$PATH:\$JAVA_HOME/bin" >> ~/.bashrc | |
| cd Android/tools/bin |
