Minliang LIN 1f0

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

You can get the list of installed codecs with:

Effective Modern CMake

Getting Started

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

	set.seed(2)
	x <- 1:100

	y <- 20 + 3 * x
	e <- rnorm(100, 0, 60)
	y <- 20 + 3 * x + e

	plot(x,y)
	yx.lm <- lm(y ~ x)
	lines(x, predict(yx.lm), col="red")

	"""
	Minimal character-level Vanilla RNN model. Written by Andrej Karpathy (@karpathy)
	BSD License
	"""
	import numpy as np

	# data I/O
	data = open('input.txt', 'r').read() # should be simple plain text file
	chars = list(set(data))
	data_size, vocab_size = len(data), len(chars)

	cmake_minimum_required(VERSION 2.8.11)
	project(qtosg)

	set(CMAKE_INCLUDE_CURRENT_DIR ON)
	set(CMAKE_AUTOMOC ON)

	find_package(Qt5 REQUIRED COMPONENTS Core Gui OpenGL)
	find_package(OpenSceneGraph REQUIRED COMPONENTS osgDB osgGA osgUtil osgViewer)

	include_directories(${OPENSCENEGRAPH_INCLUDE_DIRS})

	/*
	* OJ中加速IO常用的代码片段
	* Author Jacob C
	* THU_ID 2014010812
	*/

	//OJ中常用的头文件和预编译指令
	#ifndef _OJ_
	#define DEBUG
	#endif

	import sys, getopt

	import tensorflow as tf

	usage_str = 'python tensorflow_rename_variables.py --checkpoint_dir=path/to/dir/ ' \
	'--replace_from=substr --replace_to=substr --add_prefix=abc --dry_run'


	def rename(checkpoint_dir, replace_from, replace_to, add_prefix, dry_run):
	checkpoint = tf.train.get_checkpoint_state(checkpoint_dir)

	# docker build -t ubuntu1604py36
	FROM ubuntu:16.04

	RUN apt-get update && \
	apt-get install -y software-properties-common && \
	add-apt-repository ppa:jonathonf/python-3.6
	RUN apt-get update

	RUN apt-get install -y build-essential python3.6 python3.6-dev python3-pip python3.6-venv
	RUN apt-get install -y git