阿里短视频录制原理研究

首先阿里使用的FFmpeg基础上的修改

多段视频录制和回删原理

{
  "musics" : [

  ],
  "bitrate" : 0,
  "pasterList" : [

  ],
  "denoise" : false,
  "scaleMode" : 0,
  "audioMixVolume" : 100,
  "videoQuality" : 1,
  "outputHeight" : 1280,
  "firstVideoRotation" : 0,
  "version" : 0,
  "fps" : 25,
  "trackList" : [
    {
      "idTrack" : 0,
      "volume" : 1,
      "clipList" : [
        {
          "actions" : [

          ],
          "mediaType" : 0,
          "rotation" : 0,
          "src" : "\/var\/mobile\/Containers\/Data\/Application\/5A4C4738-3CA8-4A9C-AD4A-76CAF9605BE5\/Library\/Caches\/com.duanqu.aliyunRootPath\/record\/2E58E145-D6E3-4915-8050-29A0B17FB63C\/video\/0FA26381-8189-45EC-BDFF-68FD3AA00009.mp4",
          "audioRecordStartTime" : 0,
          "streamId" : 0,
          "mediaWidth" : 720,
          "fadeDuration" : 0,
          "mediaHeight" : 1280,
          "displayMode" : 0,
          "audioEffects" : [

          ],
          "duration" : 1.1145570278167725,
          "audioMixWeight" : 100,
          "startTime" : 0
        }
      ]
    }
  ],
  "lastModifyTimestamp" : 0,
  "mediaType" : 0,
  "animationFilters" : [

  ],
  "codecType" : 0,
  "outputWidth" : 720,
  "blurBackgrounds" : [

  ],
  "dubs" : [

  ],
  "requestId" : "FA267FC6-FA2F-4347-9CA9-1BDA0FB52E7D",
  "renderBackgroundColor" : 0,
  "primaryAudioVolume" : 100,
  "timeFilters" : [

  ],
  "runningDisplayModes" : [

  ],
  "mute" : false,
  "gop" : 30
}

者是沙盒路径的存储文件,录制一段是一段,最后使用ffmpeg 把多段视频合成导出