tajpure

const renderer = new marked.Renderer()
let originParagraph = renderer.paragraph.bind(renderer)
renderer.paragraph = (text) => {
  const blockRegex = /\$\$[^\$]*\$\$/g
  const inlineRegex = /\$[^\$]*\$/g
  let blockExprArray = text.match(blockRegex)
  let inlineExprArray = text.match(inlineRegex)
  for (let i in blockExprArray) {
    const expr = blockExprArray[i]
    const result = renderMathsExpression(expr)

v5tech

使用ffmpeg合并MP4文件

ffmpeg -i "Apache Sqoop Tutorial Part 1.mp4" -c copy -bsf:v h264_mp4toannexb -f mpegts intermediate1.ts
ffmpeg -i "Apache Sqoop Tutorial Part 2.mp4" -c copy -bsf:v h264_mp4toannexb -f mpegts intermediate2.ts
ffmpeg -i "Apache Sqoop Tutorial Part 3.mp4" -c copy -bsf:v h264_mp4toannexb -f mpegts intermediate3.ts
ffmpeg -i "Apache Sqoop Tutorial Part 4.mp4" -c copy -bsf:v h264_mp4toannexb -f mpegts intermediate4.ts
ffmpeg -i "concat:intermediate1.ts|intermediate2.ts|intermediate3.ts|intermediate4.ts" -c copy -bsf:a aac_adtstoasc "Apache Sqoop Tutorial.mp4"