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• batch - run command through directory and sub-directory

  30 août 2015, par user1901188

  I’m writing a quick little batch script that will use ffmpeg to create gif’s from short movie clips.

  I’m having trouble figuring out how to get it to run the ffmpeg commands in the for loop on any subfolders (and movies within them) . I was trying to use -r but that doesn’t seem to work. I am pretty new to this, and I have kind of bashed my way through with this script. Any help would be greatly appreciated

  ECHO Movie Dir, please?
  
  SET /p movdir=
  
  
  
  IF EXIST "%movdir%" (
  
  MKDIR "%movdir%\palgen"
  
  MKDIR "%movdir%\gif"
  
  
  
  FOR %%a in ("%movdir%\*.mov*") do (
  
  "%ffmpeg%\ffmpeg" -i "%%a" -vf fps="%fps%",scale="%scale%":flags=lanczos,palettegen -y "%movdir%\palgen\%%~na.bmp"
  
  "%ffmpeg%\ffmpeg" -i "%%a" -i "%movdir%\palgen\%%~na.bmp" -lavfi fps="%fps%",scale="%scale%":flags=lanczos,paletteuse -y "%movdir%\gif\%%~na.gif"
  
  )
  
  
  
  ) ELSE (
  
  ECHO That Directory doesn't exist, try again 
  
  GOTO Start
  
  )
  
  
  
  RD /s /q "%movdir%\palgen"
  
  ECHO All Done, bye :)

• FFMPEG Android Storage Access Framework

  6 juillet 2017, par martisan

  I’m using FFMPEG on Android to change bitrate etc of videos that weren’t recorded within my app.

  The problem I’m facing is that I can’t get the absolute path for a video the user selects from the SD Card.

  I’m using the Android Storage Access Framework and currently get the following Uri :
  content://com.android.externalstorage.documents/document/9C33-6BBD%3AVideos%2Freaps-driving.mp4

  The FFMPEG command I use :

  String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
  
                      String[] cmd = {"-y", "-i", mVideoUri.toString(), "-c:v", "libx264", "-preset", "ultrafast", "-strict", "-2", "-s", optimalVideoSize, "-aspect", "16:9", "-b", bitrate, String.format("/storage/emulated/0/Movies/InstaVid/VID_INSTAVID%s.mp4", timeStamp)};
  
                      executeFFmpegBinary(cmd, timeStamp);

  It doesn’t matter if I use mVideoUri.toString() or mVideoUri.getPath().

  Is there any way I can get the absolute path ?

• send point to point video stream using ffmpeg with rtsp (c++)

  8 décembre 2015, par seleciii44

  I need to send a h264 encoded video stream to a(only one) specific IP address with RTSP protocol on a windows PC with C++. I’m trying to use the FFMPEG library.

  I used the example in this post and i can play the stream as :

  ffplay -rtsp_flags listen -i rtsp://127.0.0.1:8554/live.sdp

  The problem is, according to the solution of post i need a server. Where -rtsp_flags listen option of ffplay behaves like a server.

  On the other hand, according to StreamingGuide of ffmpeg i can send a point to point stream like :

  ffmpeg -i INPUT -acodec libmp3lame -ar 11025 --f rtp rtp://host:port

  This is fine and works well. But i need to use rtsp. According to StreamingGuide again,

  Another option is to use RTP (which by default uses UDP) but by
  specifying it use TCP :

  ffmpeg -i input -f rtsp -rtsp_transport tcp rtsp://localhost:8888/live.sdp

  which seems to be what i’m looking for. Yet the ffmpeg tool seems to be doing nothing when i try this method (don’t know why i need tcp,but udp does not work neither). Why is that ?

  FFMPEG protocols documentation, says that i need to use a media server to send the video.

  • Why would i need a media server to just send the video stream to another PC or whatever ?
  • If i need a media server, how does the IP Camera sends the stream ?
  • If i have no option but to use a media server, could some one please recommend a server for Windows 7 ?
    • ffserver is only for linux
    • live555mediaServer seems to be used for local files or am i wrong ?
    • ..?

  Best regards,
  Gokhan.