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• FFMPEG : closing RTSP stream cleanly — av_read_frame crash on avformat_close_input

  15 octobre 2019, par braden

  I’m using KxMovie : https://github.com/kolyvan/kxmovie

  It appears to stop a stream and close the view controller one should use [pause] ;
  However, I’m trying to receive a stream from a version of gstreamer that has a memory leak if a stream isn’t closed properly (it’s just left hanging).

  So, just [pause]ing isn’t an option for me.

  I’m trying to use [closeFile] in the KxMovie decoder :

  -(void) closeFile
  
  {
  
  
  
  [self closeAudioStream];
  
  [self closeVideoStream];
  
  [self closeSubtitleStream];
  
  
  
  _videoStreams = nil;
  
  _audioStreams = nil;
  
  _subtitleStreams = nil;
  
  
  
       if (_formatCtx) {
  
           _formatCtx->interrupt_callback.opaque = NULL;
  
           _formatCtx->interrupt_callback.callback = NULL;
  
           avformat_close_input(&_formatCtx);
  
           _formatCtx = NULL;
  
       }
  
  }

  However, I usually get a EXC_BAD_ACCESS from av_read_frame after [closeFile] issues avformat_close_input.

  Can anyone give me some advice on how to cleanly shutdown an RTSP stream using ffmpeg ?

  Thanks !

• FFMPEG : closing RTSP stream cleanly — av_read_frame crash on avformat_close_input

  29 novembre 2016, par braden

  I’m using KxMovie : https://github.com/kolyvan/kxmovie

  It appears to stop a stream and close the view controller one should use [pause] ;
  However, I’m trying to receive a stream from a version of gstreamer that has a memory leak if a stream isn’t closed properly (it’s just left hanging).

  So, just [pause]ing isn’t an option for me.

  I’m trying to use [closeFile] in the KxMovie decoder :

  -(void) closeFile
  
  {
  
  
  
  [self closeAudioStream];
  
  [self closeVideoStream];
  
  [self closeSubtitleStream];
  
  
  
  _videoStreams = nil;
  
  _audioStreams = nil;
  
  _subtitleStreams = nil;
  
  
  
       if (_formatCtx) {
  
           _formatCtx->interrupt_callback.opaque = NULL;
  
           _formatCtx->interrupt_callback.callback = NULL;
  
           avformat_close_input(&_formatCtx);
  
           _formatCtx = NULL;
  
       }
  
  }

  However, I usually get a EXC_BAD_ACCESS from av_read_frame after [closeFile] issues avformat_close_input.

  Can anyone give me some advice on how to cleanly shutdown an RTSP stream using ffmpeg ?

  Thanks !

• FFmpeg Streaming Video SpringBoot endpoint not show video duration in video players

  7 avril 2024, par lxluxo23

  it turns out that I've been working on a personal project just out of curiosity.
the main function is to stream video by first encoding it through ffmpeg
then playback said video from any other device
call it "plex" very very primitive

  


  although I achieve my goal which is to encode and send the video to the devices that make the request
this video is sent so to speak as a live broadcast.
I can only pause it, no forward or rewind, anyone have any idea what I am doing wrong or if I should take some other approach either in my service or controller ?

  


  I leave fragments of my code

  


  THE CONTROLLER

  


  @RestController&#xA;@RequestMapping("/api")&#xA;@Log4j2&#xA;public class StreamController {&#xA;&#xA;    @Autowired&#xA;    VideoStreamingService videoStreamingService;&#xA;&#xA;    @Autowired&#xA;    VideoService videoService;&#xA;&#xA;&#xA;    @GetMapping("/stream/{videoId}")&#xA;    public ResponseEntity<streamingresponsebody> livestream(@PathVariable Long videoId,@RequestParam(required = false)  String codec) {&#xA;        Video video = videoService.findVideoById(videoId);&#xA;        if (video != null) {&#xA;            Codec codecEnum = Codec.fromString(codec);&#xA;            return ResponseEntity.ok()&#xA;                    .contentType(MediaType.valueOf("video/mp4"))&#xA;                    .body(outputStream -> videoStreamingService.streamVideo(video.getPath(), outputStream,codecEnum));&#xA;        }&#xA;        return ResponseEntity.notFound().build();&#xA;    }&#xA;}&#xA;</streamingresponsebody>

  


  THE SERVICE

  


  @Service
public class VideoStreamingService {

    public void streamVideo(String videoPath, OutputStream outputStream, Codec codec) {

        FFmpeg ffmpeg = FFmpeg.atPath()
                .addArguments("-i", videoPath)
                .addArguments("-b:v", "5000k")
                .addArguments("-maxrate", "5000k")
                .addArguments("-bufsize", "10000k")
                .addArguments("-c:a", "aac")
                .addArguments("-b:a", "320k")
                .addArguments("-movflags", "frag_keyframe+empty_moov+faststart")
                .addOutput(PipeOutput.pumpTo(outputStream)
                        .setFormat("mp4"))
                .addArgument("-nostdin");
        if (codec == Codec.AMD) {
            ffmpeg.addArguments("-profile:v", "high");
        }
        ffmpeg.addArguments("-c:v", codec.getFfmpegArgument());
        ffmpeg.execute();
    }
}


  


  I have some enums to vary the encoding and use hardware acceleration or not.

  


  and here is an example from my player
the endpoint is the following

  


  http://localhost:8080/api/stream/2?codec=AMD
screenshot

  


  I'm not sure if there's someone with more knowledge in either FFmpeg or Spring who could help me with this minor issue, I would greatly appreciate it. I've included the URL of the repository in case anyone would like to review it when answering my question

  


  repo

  


  I tried changing the encoding format.
I tried copying the metadata from the original video.
I tried sending a custom header.
None of this has worked.

  


  I would like to achieve what is mentioned in many sites, which is when you load a video from the network, the player shows how much of that video you have in the local "buffer".