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• FFmpeg segment desktop capture and send over http

  18 décembre 2014, par static

  I’m trying to capture the desktop video and segment it in order to send it over http to my node.js server, where I want to encode it to multiple bit-rates in order to serve it to clients for live streaming.
  The video has to be received in segments in order to create the manifest for live streaming, because i’m trying to use DASH, and to play the video on the client side using dash.js.

  The problem is that i can’t seem to be able to segment the video properly when i’m sending it to the server.

  This is the ffmpeg command that i’ve tried :

  ffmpeg -rtbufsize 1500M -f dshow -r 10 -i video="UScreenCapture"
  
  -vcodec libvpx -crf 10 -quality good -cpu-used 3 -b:v 1000k -qmin 10 -qmax 42  -
  
  threads 2 -vf scale=-1:480 -bufsize 1500 -flags -global_header -map 0 -f stream_
  
  segment -segment_time 2 -segment_format webm -  http://localhost:3000/stream/22

  I’ve managed to send it over http without segmenting the video, but on the server side i need to receive segments that have a duration of 2 seconds so that i can create the manifest.

  Also processing the video on the server side is also going to be done using ffmpeg(fluent ffmpeg module).
  I’m open to any suggestions.

• Recording Video and Voice at the same time to .mp4 on raspbarry pi

  18 juin 2014, par SunBae Yim

  I tried for 3 months, But can’t resolved it.
  on Raspberry Pi.

  I want to recording video and voice to mp4, And Realtime streaming(Mjpeg) no delay.

  Of course, It has Pi Camera Module.
  And I installed a soundcard as below.

  pi@raspberrypi ~ $ aplay -l
  
  **** List of PLAYBACK Hardware Devices ****
  
  card 0: sndrpiproto [snd_rpi_proto], device 0: WM8731 HiFi wm8731-hifi-0 []
  
    Subdevices: 1/1
  
    Subdevice #0: subdevice #0

  First Goal is :

  Recording voice(aac or mp3) and video(h264) at the same time to .mp4.
  h264 and aac are combined into mp4 container.
  I failed make it using ffmpeg. too difficult.

  Sencond Goal is :

  Realtime Streaming for MJPEG.
  I receive stream using Safari, Chrome, FireFox, Explorer on Windows & Android.
  And using IP CAM VIEWER of Android App.

  I tried various solution,
  But most solutions are only video no voice.

  Third Goal is :

  Above Functions are run at the same time on Raspberry Pi.
  Maybe I will make Python and Shell Scripts files for run above solution at the same time.

  Please Help me !

  Thanks,
  SB YIM

• How to use ffmpeg to extract WAVE_FORMAT_GSM610 file to WAVE_FORMAT_PCM file

  26 juillet 2017, par xuejianbest

  I have a compressed audio file that is WAVE_FORMAT_GSM610 format.

  Now I want to open it with python wave module. But wave module only support WAVE_FORMAT_PCM file.

  I setup ffmpeg tools. What command can I use to complete this conversion ?

  Or Is there good way to complete the task ?

  Thinks.