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• ffmpeg real-time buffer too full or near too full frame dropped, I even tried increasing rtbufsize. What could be going wrong ?

  21 mai 2024, par Ali Azlan

  We have a software where we capture the stream from the camera connected to the laptop or device using ffmpeg python,

  


                   ffmpeg
                .input(video, s='640x480', **self.args) //tried with rtbufsize=1000M (enough I suupose/ also sometimes the error does not occur even on default rtbufsize which is around 3MB)
                .output('pipe:', format='rawvideo', pix_fmt='rgb24')
                .overwrite_output()
                .run_async(pipe_stdout=True) 


  


  majority of the times when I start the software like the software is still initiating we receive the following error, I have also received this error when the software has initiated fully and completely and it is running from a long time like after 12hrs or more.

  


  


  Error : [dshow @ 000002248916e240] real-time buffer [Integrated
Camera] [video input] too full or near too full (80% of size : 3041280
[rtbufsize parameter]) ! frame dropped !
Last message repeated 1 times [dshow @ 000002248916e240] real-time buffer [Integrated Camera] [video input] too full or near too full
(101% of size : 3041280 [rtbufsize parameter]) ! frame dropped !

  


  


  What are the things we possibly might be doing wrong ?

  


  Edit 1 :

  


  below is the code to consume the frame captured in the video using ffmpeg

  


      def frame_reader(self):
    while True:
        in_bytes = self.process.stdout.read(self.width * self.height * 3)
        if not in_bytes:
            break
        try:
            in_frame = (
                np
                    .frombuffer(in_bytes, np.uint8)
                    .reshape([self.height, self.width, 3])
            )
            frame = cv2.resize(in_frame, (640, 480))
            frame = cv2.cvtColor(frame, cv2.COLOR_RGB2BGR)
        except Exception as e:
            logger.error(e, exc_info=True)
            in_frame = (
                np
                    .frombuffer(in_bytes, np.uint8)
            )

        if not self.q.empty():
            try:
                self.q.get_nowait()
            except queue.Empty:
                pass
        self.q.put(frame)


  


• ffmpeg Windows stream desktop real time to web

  14 avril 2019, par ilapasle

  Hello i want to stream my Windows desktop in realtime with ffmpeg

  for capture desktop i use this code :

  ffmpeg.exe -f gdigrab -framerate 60 -i desktop output.mkv

  it’s work

  Now i not want to record video of my desktop but stream my desktop and view this in web browser.
  i need to export stream video in m3u8 file

  i have use this code :

  ffmpeg.exe -f gdigrab -framerate 60 -i desktop -c:v libx264 -crf 18 -maxrate 400k -bufsize 1835k -pix_fmt yuv420p -hls_time 10 -hls_wrap 6 output.m3u8

  in my current dir i have 6 ts file and output.m3u8 but i can not open output.m3u8 file, the file is empty why ?

  i want to read this file in web browser like this code :

      
  
  
  
  
  
  
  
  <div>
  
  <video autoplay="true" controls="controls" width="640" height="480">
  
  <source src="output.m3u8" type="application/x-mpegURL"></source>
  
  Your browser does not support HTML5 streaming!
  
  </video>
  
  </div>

  thanks for advance for your help

• Revision 63c5bf2b9c : Fix Tsan errors This patch fixed 2 reported Tsan errors while running VP9 real-

  15 avril 2015, par Yunqing Wang

  Changed Paths :
   Modify /vp9/encoder/vp9_encodeframe.c

  
   Modify /vp9/encoder/vp9_encodeframe.h

  
   Modify /vp9/encoder/vp9_encoder.c

  
   Modify /vp9/encoder/vp9_pickmode.c

  
  
  Fix Tsan errors

  This patch fixed 2 reported Tsan errors while running VP9 real-time
  encoder.

  Change-Id : Ib0278fe802852862c3ce87c4a500e544d7089f67