flutter-bounty-hunters / ffmpeg_cli Goto Github PK

// Define an output stream, which will map the filter
// graph to the video file. The ID names can be whatever
// you'd like.
const outputStream = FfmpegStream(
  videoId: "[final_v]", 
  audioId: "[final_a]",
);

// Compose your desired FFMPEG command, with inputs, filters, arguments,
// and an output location.
final command = FfmpegCommand(
  inputs: [
    FfmpegInput.asset("assets/intro.mp4"),
    FfmpegInput.asset("assets/content.mp4"),
    FfmpegInput.asset("assets/outro.mov"),
  ],
  args: [
    // Map the filter graph to the video file output.
    CliArg(name: 'map', value: outputStream.videoId!),
    CliArg(name: 'map', value: outputStream.audioId!),
    const CliArg(name: 'vsync', value: '2'),
  ],
  filterGraph: FilterGraph(
    chains: [
      FilterChain(
        inputs: [
          // Send all 3 video assets into the concat filter.
          const FfmpegStream(videoId: "[0:v]", audioId: "[0:a]"),
          const FfmpegStream(videoId: "[1:v]", audioId: "[1:a]"),
          const FfmpegStream(videoId: "[2:v]", audioId: "[2:a]"),
        ],
        filters: [
          // Concatenate 3 segments.
          ConcatFilter(
            segmentCount: 3, 
            outputVideoStreamCount: 1, 
            outputAudioStreamCount: 1,
          ),
        ],
        outputs: [
          // Give the output stream the given audio/video IDs
          outputStream,
        ],
      ),
    ],
  ),
  outputFilepath: "/my/output/file.mp4",
);

// Execute command
final process = await Ffmpeg().run(command: command);