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DuongHieuMAI / ffmpeg.md
Created July 13, 2020 15:00 — forked from protrolium/ffmpeg.md
ffmpeg guide

ffmpeg

Converting Audio into Different Formats / Sample Rates

Minimal example: transcode from MP3 to WMA:
ffmpeg -i input.mp3 output.wma

You can get the list of supported formats with:
ffmpeg -formats

Convert WAV to MP3, mix down to mono (use 1 audio channel), set bit rate to 64 kbps and sample rate to 22050 Hz:

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DuongHieuMAI / index.md
Created June 17, 2020 09:18 — forked from bojand/index.md
gRPC and Load Balancing

Just documenting docs, articles, and discussion related to gRPC and load balancing.

https://github.com/grpc/grpc/blob/master/doc/load-balancing.md

Seems gRPC prefers thin client-side load balancing where a client gets a list of connected clients and a load balancing policy from a "load balancer" and then performs client-side load balancing based on the information. However, this could be useful for traditional load banaling approaches in clound deployments.

https://groups.google.com/forum/#!topic/grpc-io/8s7UHY_Q1po

gRPC "works" in AWS. That is, you can run gRPC services on EC2 nodes and have them connect to other nodes, and everything is fine. If you are using AWS for easy access to hardware then all is fine. What doesn't work is ELB (aka CLB), and ALBs. Neither of these support HTTP/2 (h2c) in a way that gRPC needs.

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DuongHieuMAI / a-mongodb-replica-set-docker-compose-readme.md
Last active April 12, 2021 10:16 — forked from harveyconnor/a-mongodb-replica-set-docker-compose-readme.md
MongoDB Replica Set / docker-compose / mongoose transaction with persistent volume

Ourcase:

  • use setup2.sh
  • make sure that network are same

Origin:

This will guide you through setting up a replica set in a docker environment using.

  • Docker Compose
  • MongoDB Replica Sets
  • Mongoose

How to setup AWS lambda function to talk to the internet and VPC

I'm going to walk you through the steps for setting up a AWS Lambda to talk to the internet and a VPC. Let's dive in.

So it might be really unintuitive at first but lambda functions have three states.

  1. No VPC, where it can talk openly to the web, but can't talk to any of your AWS services.
  2. VPC, the default setting where the lambda function can talk to your AWS services but can't talk to the web.
  3. VPC with NAT, The best of both worlds, AWS services and web.
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DuongHieuMAI / trial.md
Created November 5, 2018 06:52 — forked from satish-setty/trial.md
Beyond Compare 4 license for Linux

Beyond Compare 4.x

Licensed to: ASIO Allsoftinone Quantity: 1 user Serial number: 1822-9597 License type: Pro Edition for Linux

First delete away trial mode:

sudo sed -i "s/keexjEP3t4Mue23hrnuPtY4TdcsqNiJL-5174TsUdLmJSIXKfG2NGPwBL6vnRPddT7tH29qpkneX63DO9ECSPE9rzY1zhThHERg8lHM9IBFT+rVuiY823aQJuqzxCKIE1bcDqM4wgW01FH6oCBP1G4ub01xmb4BGSUG6ZrjxWHJyNLyIlGvOhoY2HAYzEtzYGwxFZn2JZ66o4RONkXjX0DF9EzsdUef3UAS+JQ+fCYReLawdjEe6tXCv88GKaaPKWxCeaUL9PejICQgRQOLGOZtZQkLgAelrOtehxz5ANOOqCaJgy2mJLQVLM5SJ9Dli909c5ybvEhVmIC0dc9dWH+/N9KmiLVlKMU7RJqnE+WXEEPI1SgglmfmLc1yVH7dqBb9ehOoKG9UE+HAE1YvH1XX2XVGeEqYUY-Tsk7YBTz0WpSpoYyPgx6Iki5KLtQ5G-aKP9eysnkuOAkrvHU8bLbGtZteGwJarev03PhfCioJL4OSqsmQGEvDbHFEbNl1qJtdwEriR+VNZts9vNNLk7UGfeNwIiqpxjk4Mn09nmSd8FhM4ifvcaIbNCRoMPGl6KU12iseSe+w+1kFsLhX+OhQM8WXcWV10cGqBzQE9OqOLUcg9n0krrR3KrohstS9smTwEx9olyLYppvC0p5i7dAx2deWvM1ZxKNs0BvcXGukR+/g" /usr/lib/beyondcompare/BCompare
max$ telnet 192.168.0.112 9527
Trying 192.168.0.112...
Connected to 192.168.0.112.
Escape character is '^]'.
AVdec - PlayGetChannels(2857): enter 4 channles
AVenc - CaptureGetChannels(756): 1
AVdec - PlayGetChannels(2857): enter 4 channles
AVdec - PlayGetChannels(2857): enter 4 channles
**********************************************************************
| SYSTEM INFO
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DuongHieuMAI / camera.md
Created August 3, 2018 03:07 — forked from gabonator/camera.md
Cheap chinese IP camera with H264 encoding based on Hisilicon 8M (Hi3518E) chip

Cheap chinese IP camera with H264 encoding based on Hisilicon 8M (Hi3518E) chip

Video stream url for VLC/DVR:

  • rtsp://192.168.1.93:554/user=admin&password=&channel=&stream=.sdp?real_stream--rtp-caching=100

Telnet access

  • telnet 192.168.1.10 23
  • Localhost login: root
  • Password: xmhdipc