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• Record window from CMD or PowerShell [closed]

  9 octobre 2023, par Pingui

  How can one record a window e.g. from the Command Promt or PowerShell ?

  


  I tried the following CMD-command which in principle works, but it cuts off the window (even with increased video_size 1920x1080, which seems to have no effect at all) :

  


  "C:\[your_path_to]\ffmpeg.exe" -f gdigrab -i title="New Tab - Google Chrome" -framerate 30 -video_size 1920x1080 -c:v libx264 -preset ultrafast -t 5 output.mp4


  


  The goal would be something like the above, but...

  


  

  1. Ideally, the window should be found not by its window title, but by its process name (e.g. chrome.exe)

  


  2. The video should be automatically fitted to the window size (even if larger than 1920x1080)

  


  3. The video-name.mp4 and video duration (-t) should be handed dynamically as input variables

  


  4. If the video-name.mp4 already exists, it should be overwritten without asking

  


  5. The windw should be recorded even if not on top

  


  


  Any solution in CMD, PowerShell or whatever can be called by Window's ShellExecuteW function and passed video-name.mp4 and video duration as inputs would be fine.

  


• Saving animation using FFMPEG is cutting off subplot

  13 juin 2017, par Aklys

  I’m using the following code to save an animated figure with two plots :

  c_anim = animation.FuncAnimation(c_fig, c_animate, init_func=c_init, repeat=True,
  
                                   frames=len(main_df.reset_index()['DATE'].tolist()),
  
                                   interval=graph_interval_speed, blit=True)
  
  plt.rcParams['animation.ffmpeg_path'] = '.\\FFMPEG\\bin\\ffmpeg.exe'
  
  plt.rcParams['animation.bitrate'] = -1
  
  FFwriter = animation.FFMpegWriter(fps=30, codec='libx264', extra_args=['-s', '1080:1920', '-aspect', '16:9'])
  
  c_anim.save('basic_animation.mp4', writer=FFwriter, dpi=100)

  But the video file it outputs cuts off the second plot. The animation works fine with plt.show() and the figure or plot have not been given specific sizes.

  I’m using the following versions :

  • python = 3.6.1
  • matplotlib = 1.5.3
  • ffmpeg = N-82225-gb4e9252
  • OS = Windows 10

  Please advise me if further information is needed as it’s the first time I’ve attempted to record an animated plot.

  How do I adjust the aspect and resolution to work with the figure itself so nothing is cut off in the video ?

• How can I cut segments of audio/video while keeping the other track intact in ffmpeg ?

  8 novembre 2022, par limejellodragon

  I am a newer user to ffmpeg, but I have a slightly complicated use case for it. I need to be able to cut multiple sections out of a video and/or multiple sections out of the audio, with the actual length of the video and audio files remaining intact (e.g. the audio would cut out but the video continues, or the video continues but the audio cuts out). I have been slowly learning about complex filtergraphs, but a little help would be VERY much appreciated.

  


  this is currently my super basic "test script" to see if I can get it to work (in it's actual use case, the timestamps will be variables in a python program)

  


      ffmpeg -i bdt.mkv -filter_complex 
    [0:v]trim=start=10.0:end=15.0,setpts=PTS-STARTPTS[0v];
    [0:a]atrim=start=10.0:end=15.0,asetpts=PTS-STARTPTS[0a];
    [0:v]trim=start=65.0:end=70.0,setpts=PTS-STARTPTS[1v];
    [0:a]atrim=start=65.0:end=70.0,asetpts=PTS-STARTPTS[1a];[0v][0a][1v]
    [1a]concat=n=2:v=1:a=1[outv][outa] -map [outv] -map [outa] out.mp4