RTMP流的记录

Question

我有一堂课，它在ExoPLayer的帮助下观看rtmp流：

    player = ExoPlayerFactory.newSimpleInstance(context)
    val rtmpDataSourceFactory = RtmpDataSourceFactory()
    val videoSource = ProgressiveMediaSource.Factory(rtmpDataSourceFactory)
            .createMediaSource(Uri.parse(streamURL))

    player.prepare(videoSource)
    player.setVideoTextureView(playerView)
    player.playWhenReady = true

playerView是TextureView，而不是SurfaceView，因为我还需要从流中获取屏幕截图。

据我所知，ExoPlayer没有用于流记录的方法，只能下载，所以问题是-我如何记录rtmp流？我搜索了很多库，并提出了堆栈问题，但仍然找不到干净，正常的解决方案。

[目前，我正在尝试通过基本的MediaRecorder记录流，并获得Android开发人员的帮助，但我仍然不明白MediaRecorder如何获取流数据或至少获取表面数据。

val path = "${Environment.getExternalStorageDirectory()}${File.separator}${Environment.DIRECTORY_DCIM}${File.separator}${"FILE_NAME"}"

        recorder = MediaRecorder().apply {
            setVideoSource(MediaRecorder.VideoSource.SURFACE)
            setOutputFormat(MediaRecorder.OutputFormat.MPEG_4)
            setOutputFile(path)

            start()
        }

Answer 1

我通过使用FFMpeg库找到了解决方案。如果有人需要-添加此Gradle依赖项：implementation 'com.writingminds:FFmpegAndroid:0.3.2

这是代码：

        // Build path for recorded video
        val title = "/" + System.currentTimeMillis().toString() + ".mp4"
        val targetFile = File(getExternalStoragePublicDirectory(DIRECTORY_DCIM).toString() + title)

        // FFMpeg command for stream recording
        val command = arrayOf("-i", streamURL, "-acodec", "copy", "-vcodec", "copy", targetFile.toString())

        try {
            // Load the binary
            ffmpeg.loadBinary(object : LoadBinaryResponseHandler() {})
        } catch (e: FFmpegNotSupportedException) {
            e.printStackTrace()
        }

        try {
            // Execute command
            ffmpeg.execute(command, object : ExecuteBinaryResponseHandler() {})
        } catch (e: FFmpegCommandAlreadyRunningException) {
            e.printStackTrace()
        }