Recherche avancée

Sur d’autres sites (4517)

• Adaptive nmls filters matlab python [closed]

  1er juin 2012, par user1314738

  I am interested in removing noise in audio from mike for reatime audio streaming using ffmpeg.

  As I get some background noise while I pass the recorded stream I am interested in removing this noise before I encode the stream the stream.

  There are few issues :-

  1.as i need to this in real time for audio streaming I cannot use Matlab TOOLBOX filters !
  so please suggest other audio processing platforms I can use for the purpose.
  If that is in python it would be really good.

  2.through ffmpeg I can link the alsa sound card using :-

  $ ffmpeg -i hw:0:0 -acodec............... rtp//255:130:40 and stream on rtp.

  but when I will be filtering the sound from mic before it is being used by the ffmpeg, i am bit confused about the syntax for the input to the ffmpeg encoder for rtp streaming.

  would it be fine to use some sort of pipe-lined buffer in between ?But the issue of real time stream and time sync between streaming and filtering still haunts.

  Please help me out in selecting right platform for filtering the audio stream and it's integration with ffmpeg encoder for real time streaming.

• ffmpeg dshow - Getting duplicate/dropped frames, I'm not doing anything [closed]

  30 juin, par ENunn

  I'm messing around with recording my capture card with ffmpeg. No matter what I do I get duplicate and dropped frames.


  


  I'm not even doing anything on my computer. Is there a fix for this at all ?
Here's my command.

  


  


  ffmpeg -hide_banner -rtbufsize 2G -f dshow -video_size 2560x1440
-framerate 60.0002 -pix_fmt bgr24 -video_pin_name 0 -audio_pin_name 1 -i video="AVerMedia HD Capture GC573 1":audio="AVerMedia HD Capture GC573 1" -async 1 -rtbufsize 1M -f dshow -sample_rate 48000 -i
audio="Digital Audio (S/PDIF) (Sound Blaster X-Fi Xtreme Audio)" -map
0 -map 1 -colorspace:v "bt709" -color_primaries:v "bt709" -color_trc:v
"bt709" -color_range:v "tv" -c:v hevc_nvenc -pix_fmt yuv444p16le -gpu
any -g 30 -rc vbr -cq 16 -qmin 16 -qmax 16 -b:v 0K -b_ref_mode 1
-spatial_aq 1 -temporal_aq 1 -preset p7 -c:a copy -f segment -segment_time 9999999999 -strftime 1 "F :\ffmpeg recordings%%Y-%%m-%%d_%%H-%%M-%%S.mkv"

  


  


• 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