Recherche avancée

Sur d’autres sites (11310)

• ffmpeg - "Could not find the codec parameters" (Live Stream)

  8 mai 2017, par Gagandeep Singh

  I am trying to record a live HTTP stream using the following command :

  ffmpeg -analyzeduration 2147483647 -probesize 2147483647  -i "http://mumsite.cdnsrv.jio.com/jioplay.catchup.cdn.jio.com/recordings/H8_S480_H264_MP/2556/1493919000.mp4/init/LIVEPROGRAM_CHANNEL_2556_START_1493919000_END_1493922600?uid=guest_uid&recid=SCHEDULED-A00B00C00D00E00F-_-_-2556_48168092&shard=shard_a&sid=77179867662431494241905&i=2&nwk=WIFI&pk=1&CurrentNetworkType=WIFI&CurrentNetworkType=WIFI" -c copy -absf aac_adtstoasc testing.ts

  Below is a screenshot of the ff-prompt console :

  http://i64.tinypic.com/331d55w.jpg

  It looks like the URL is correct but no data is being saved in the file and these warning messages are shown :

  multiple fourcc not supported

  Could not find codec parameters for stream 1 (Video : none (encv /
  0x76636E65), none, 576x432) : unknown codec

  How do I determine which codec would handle that stream or is the reason something else ?

• Can't find ffmpeg with python

  16 avril 2017, par Edoardo Centamori

  I’m trying to use the module save from matplotlib.animation.FuncAnimation.
  This is the part of the code I’m referring to :

  import matplotlib.animation as animation
  
  plt.rcParams['animation.ffmpeg_path'] ='/Users/edoardo/Downloads/ffmpeg-3.3/ffmpeg'
  
  ...
  
  """other code"""
  
  ...
  
  ani = animation.FuncAnimation(fig, update_mode, 250,
  
                                 interval=50, blit=False)
  
  ani.save('Resonant_modes.mp4', fps=30, extra_args=['-vcodec', 'libx264'])

  But I get this error as a result :

  ValueError: Cannot save animation: no writers are available.
  
  Please install mencoder or ffmpeg to save animations.

  The problem is that I have installed ffmpeg, so I don’t know what to do.
  Could someone explain to me how to do and where should I move the executable ffmpeg file so than Python can find it easly ?

  Edit 1 :
  I’m using mac os x
  FFmpeg should be installed correctly, here’s the output from Bash :

  MBP-di-Edoardo:~ edoardo$ ffmpeg ffmpeg version 2.8.6 Copyright (c)    
  
  2000-2016 the FFmpeg developers built with gcc 4.8.5 (GCC) 
  
  ...more stuff ... 
  
  Use -h to get full help or, even better, run 'man ffmpeg' –

  Edit 2 :
  I’ve tried moving the file to \bin but even using sudo I can’t

  sudo cp ffmpeg /bin
  
  Password:
  
  cp: /bin/ffmpeg: Operation not permitted
  
  MBP-di-Edoardo:Desktop edoardo$ 

• Unable to find a suitable output format for 'pipe' - Long ffmpeg code

  7 avril 2017, par I.Alex

  this its my code which its pretty long.
  Can you tell me please why its not working ?

  ffmpeg -i input.mp4 - filter_complex \
  
     "[0:v]split=4[v0][v1][v2][v3]; \
  
      [v0]trim=start_frame=0:end_frame=1,loop=90:1:0,setpts=N/FRAME_RATE/TB[0v]; \
  
      [v1]trim=start_frame=1:end_frame=301,loop=90:1:299,setpts=N/FRAME_RATE/TB[1v]; \
  
      [v2]trim=start_frame=301:end_frame=601,loop=90:1:299,setpts=N/FRAME_RATE/TB[2v]; \
  
      [v3]trim=start_frame=601:end_frame=900,loop=90:1:298,setpts=N/FRAME_RATE/TB[3v]; \
  
      aevalsrc=0:d=3[0a]; \
  
      [0:a]asplit=3[a1][a2][a3]; \
  
      [a1]atrim=0:10,asetpts=N/SR/TB[1a]; \
  
      [a2]atrim=10:20,asetpts=N/SR/TB[2a]; \
  
      [a3]atrim=20:30,asetpts=N/SR/TB[3a]; \
  
      [0v][0a][1v][1a][2v][2a][3v][3a]concat=n=4:v=1:a=1[v][a]" \
  
     -map "[v]" -map "[a]" outva.mp4

  I get this : Unable to find a suitable output format for ’pipe :’
  pipe: : Invalid argument