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• FFmpeg - record from stream terminating unexpectedly using kokorin/Jaffree ffmpeg wrapper for Java

  18 avril 2024, par pyrmon

  I am programming a Spring Boot Application using Maven and Java 21. I am trying to record a stream from a url and save it to a mkv file. I intend to do this with kokorin/Jaffree in version 2023.09.10. The recording seems to work ok, however longer videos are terminating unexpectedly. Sometimes after 5 minutes, other times an hour or even longer. Sometimes with Exit Code 0 and sometimes with 1.

  


  I have implemented the recording like this :

  


  @Override
    public void startRecording(RecordingSchedule recordingSchedule) {
        logger.info("Starting recording for schedule with filename {}", recordingSchedule.getFileName());

        String m3uUrl = recordingSchedule.getM3uUrl();
        LocalDateTime endTime = timeUtils.parseStringToLocalDateTime(recordingSchedule.getEndTime());
        LocalDateTime stopTime = endTime.plusSeconds(20);
        String timeToRecord = timeUtils.calculateTimeToRecord(stopTime);
        Path outputPath = Paths.get("/recordings/" + recordingSchedule.getFileName());

        try {
            FFmpeg.atPath()
                  .addInput(UrlInput.fromUrl(m3uUrl))
                  .addArgument("-xerror")
                  .addArguments("-reconnect", "5")
                  .addArguments("-reconnect_streamed", "5")
                  .addArguments("-reconnect_delay_max", "20")
                  .addArguments("-t", timeToRecord)
                  .addArguments("-c", "copy")
                  .addOutput(
                      UrlOutput.toPath(outputPath))
                  .setLogLevel(LogLevel.WARNING)
                  .execute();
            logger.info("Recording complete. Output file: {}", outputPath.toAbsolutePath());
        } catch (Exception e) {
            logger.error("Error recording M3U stream {}: {}", recordingSchedule.getFileName(), e.getMessage());
        }
    }


  


  And I am calling the method like this :
executorConfig.executorService().submit(() -> ffmpegService.startRecording(recording));

  


  Any ideas what I am doing wrong ?
Here are the log lines at the beginning and end of recording of the past two attempts :

  


  2024-04-18T00:54:48.689+02:00  INFO 1 --- [pool-2-thread-1] m.s.r.service.impl.FfmpegServiceImpl     : Starting recording for schedule with filename Example1.mkv
2024-04-18T00:54:48.697+02:00  WARN 1 --- [pool-2-thread-1] c.github.kokorin.jaffree.ffmpeg.FFmpeg   : ProgressListener isn't set, progress won't be reported
2024-04-18T00:54:48.698+02:00  INFO 1 --- [pool-2-thread-1] c.g.k.jaffree.process.ProcessHandler     : Command constructed:
ffmpeg -loglevel level+warning -i http://example.stream.url.com -n -xerror -reconnect 5 -reconnect_streamed 5 -reconnect_delay_max 20 -t 10771 -c copy /recordings/Example1.mkv
2024-04-18T00:54:48.698+02:00  INFO 1 --- [pool-2-thread-1] c.g.k.jaffree.process.ProcessHandler     : Starting process: ffmpeg
2024-04-18T00:54:48.701+02:00  INFO 1 --- [pool-2-thread-1] c.g.k.jaffree.process.ProcessHandler     : Waiting for process to finish
2024-04-18T01:31:02.633+02:00  WARN 1 --- [         StdErr] c.g.k.jaffree.process.BaseStdReader      : [h264 @ 0x559cd22dd940] [warning] Increasing reorder buffer to 2
2024-04-18T01:31:02.633+02:00  INFO 1 --- [pool-2-thread-1] c.g.k.jaffree.process.ProcessHandler     : Process has finished with status: 0
2024-04-18T01:31:02.734+02:00  INFO 1 --- [pool-2-thread-1] m.s.r.service.impl.FfmpegServiceImpl     : Recording complete. Output file: /recordings/Example1.mkv

2024-04-18T03:54:48.678+02:00  INFO 1 --- [pool-2-thread-2] m.s.r.service.impl.FfmpegServiceImpl     : Starting recording for schedule with filename Example2.mkv
2024-04-18T03:54:48.678+02:00  WARN 1 --- [pool-2-thread-2] c.github.kokorin.jaffree.ffmpeg.FFmpeg   : ProgressListener isn't set, progress won't be reported
2024-04-18T03:54:48.678+02:00  INFO 1 --- [pool-2-thread-2] c.g.k.jaffree.process.ProcessHandler     : Command constructed:
ffmpeg -loglevel level+warning -i http://example.stream.url.com/ -n -xerror -reconnect 5 -reconnect_streamed 5 -reconnect_delay_max 20 -t 11431 -c copy /recordings/Example2.mkv
2024-04-18T03:54:48.678+02:00  INFO 1 --- [pool-2-thread-2] c.g.k.jaffree.process.ProcessHandler     : Starting process: ffmpeg
2024-04-18T03:54:48.679+02:00  INFO 1 --- [pool-2-thread-2] c.g.k.jaffree.process.ProcessHandler     : Waiting for process to finish
2024-04-18T04:57:22.256+02:00  WARN 1 --- [         StdErr] c.g.k.jaffree.process.BaseStdReader      : [h264 @ 0x55707ba988c0] [warning] Increasing reorder buffer to 3
2024-04-18T04:58:47.455+02:00 ERROR 1 --- [         StdErr] c.g.k.jaffree.process.BaseStdReader      : [NULL @ 0x55707ba988c0] [error] Picture timing SEI payload too large
2024-04-18T04:58:47.456+02:00 ERROR 1 --- [         StdErr] c.g.k.jaffree.process.BaseStdReader      : [NULL @ 0x55707ba988c0] [error] non-existing PPS 1 referenced
2024-04-18T04:58:47.456+02:00  WARN 1 --- [         StdErr] c.g.k.jaffree.process.BaseStdReader      : [matroska @ 0x55707ba9a380] [warning] Timestamps are unset in a packet for stream 0. This is deprecated and will stop working in the future. Fix your code to set the timestamps properly
2024-04-18T04:58:47.456+02:00 ERROR 1 --- [         StdErr] c.g.k.jaffree.process.BaseStdReader      : [matroska @ 0x55707ba9a380] [error] Can't write packet with unknown timestamp
2024-04-18T04:58:47.463+02:00 ERROR 1 --- [         StdErr] c.g.k.jaffree.process.BaseStdReader      : [error] av_interleaved_write_frame(): Invalid argument
2024-04-18T04:58:47.463+02:00  INFO 1 --- [pool-2-thread-2] c.g.k.jaffree.process.ProcessHandler     : Process has finished with status: 1
2024-04-18T04:58:47.564+02:00 ERROR 1 --- [pool-2-thread-2] m.s.r.service.impl.FfmpegServiceImpl     : Error recording M3U stream Example2.mkv: Process execution has ended with non-zero status: 1. Check logs for detailed error message.


  


  They were supposed to run nearly 3 hours and the other one over 3 hours. And with the timestamps you can see that they are not running nearly as long.
Thank you for your help !

  


• Video Live wallpaper android

  12 juillet 2014, par NZT Solution

  I am trying to implement https://github.com/frankandrobot/GLWallpaperVideoDemo but this is 3 year old code. I didn’t find any other tutorial. I am using eclipse on windows 7. I have searched on google and found that NDK-r7 versions and later can also be build on windows without using Cygwin. I have also followed this link How to play video as live wallpaper android ?. I have generated .so files as well but when i try to install this in my device It is getting crashed. I have installed NDK also tried to replace latest FFMpeg libraries but no Luck ! I wonder if someone could help me out of these ? Error java.lang.RuntimeException: Unable to instantiate service frankandrobot.glwallpapervideodemo.com

• How to stream to NestJS if the data is transmitted through a NATS broker ?

  13 août 2023, par О. Войтенко

  I have an rtsp to mpegts streamer (ffmpeg wrapped in Express for publishing) that streams by publish to a NATS Jetstream.

  


  const options =
     [
         "-rtsp_transport", "tcp",
         "-i", streamUrl,
         '-f', 'mpegts',
         '-pix_fmt', 'yuv420p',
         '-c:v', 'h264',
         '-b:v', '800k',
         '-r', '30',
         '-muxdelay', '0.4',
         '-movflags', 'frag_keyframe+empty_moov',
         '-'
     ];


  


  try {
         const natsConnection = await nats.connect({
             servers: 'ws://127.0.0.1:9222',
             preserveBuffers: true
         })

         conststream = spawn('ffmpeg', options);

         stream.stdout.on('data', (chunk) => {
             console log(chunk);
             natsConnection.publish('stream.1', chunk);
         });

         stream.stdout.on('error', (error) => {
             console.error('FFmpeg error:', error);
         });

         stream.stdout.on('close', (code) => {
             console.log('FFmpeg process closed with code:', code);
         });
     } catch (e) {
         console.error(e);
     }


  


  It's all about the NestJS application signing up for this when the visitor follows the route.
The controller method itself

  


  @get()
   async findOne(
     @Headers() headers,
     @Res() res,
   ) {
     const streamObservable = this.natsService.subscribeStreamEvents('1');

     // Set appropriate headers for video streaming
     res.setHeader('Content-Type', 'video/mp4');
     res.setHeader('Transfer-Encoding', 'chunked');

     res.status(200);

     // Write data chunks directly to the response
     const subscription = streamObservable.subscribe({
       next: (chunk) => {
         console.log('wwww', chunk);
         res.write(chunk);
       },
       error: (error) => {
         console.error('Error streaming video:', error);
       },
       complete: () => {
         res end();
       },
     });

     res.on('close', () => {
       subscription.unsubscribe();
     });
   }


  


  Well, and service service

  


  subscribeToCameraEvents(cameraId: string) {&#xA;     const subject = new Subject<any>();&#xA;&#xA;     this.natsConnection.subscribe(`stream.${cameraId}`, {&#xA;       callback: (err, msg: Msg) => {&#xA;         if (err) {&#xA;           subject.error(err);&#xA;           return;&#xA;         }&#xA;         // console.log(msg.data);&#xA;         subject.next(msg.data);&#xA;       },&#xA;     });&#xA;&#xA;     return subject.asObservable();&#xA;   }&#xA;</any>

  


  The data is consoled as a Buffer.

  


  trying to play the stream

  


  &#xA;&#xA;&#xA;     &#xA;&#xA;&#xA;<video controls="controls" width="640" height="480" style="background: black">&#xA;     <source src="http://localhost:3301/api/streams" type="video/mp4">&#xA;     Your browser does not support the video tag.&#xA;</source></video>&#xA;&#xA;&#xA;

  


  the route is true in the source.

  


  The problem is that through VLC and ffplay - localhost:3301/api/streams the stream is displayed, and everything works fine, without any additional settings.

  


  And here in html does not want.

  


  **What am I doing wrong ? **

  


  I will be glad to any comments and additional questions.

  


  I have tried canvas and jsmpeg (not working too), @Res(passthrough : true) - stream does not work in VLC, ffplay and html (without passthrough stream is working only in VLS and ffplay)