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• FFmpeg command line vs programatically

  10 avril 2018, par John

  How do I reproduce the ffmpeg rtsp streaming/codec copying/audio disabling command line entry

  ffmpeg -i rtsp://abcd:123456@1.2.3.4/rtspvideostream -vcodec copy -an /home/pc/video.avi

  within ffmpeg library referencing code ? Currently I use (along with all the necessary av_find_stream_info / avcodec_find_decoder etc. commands)

  numBytes = av_open_input_file(&pFormatCtx,"rtsp://abcd:123456@1.2.3.4/rtspvideostream", NULL, 0, NULL))

  which to me appears to reproduce the command line entry

  ffmpeg -i rtsp://abcd:123456@1.2.3.4/rtspvideostream /home/pc/video.avi

  without the hugely CPU saving flags of ’-vcodec copy -an’.

• Is there a way to open a batch file at a certain line using a command prompt window

  14 août 2024, par Voidmaster01

  Im testing a batch file that Im still in the process of making and I want to open it at line 6 instead of line 1 since ive already run that part of the code. it takes a couple of minutes to run it since im using ffmpeg.

  


  this is the first area of the code

  


  1 @Echo off
2 set /p IPath=Enter the Path of the file you wish to remux from (use "Copy as path" option and keep  the Quotations): 
3 set /P M=what is the first letter of the path of your new file?(do not include the semicolon(:))
4 set /p NewPath=Enter the Path you wish to remux to (must be path minus the directory BUT do not use  Quotations for this)(I also recommend using a single folder to hold the files while remuxing them before sending them  to their separate folders):
5 ffmpeg -i %IPath%  -c copy -map 0 "%M%:\%NewPath%"
6 goto :Premiere &:: This command takes inputs from the previous lines and sets up to remux files
7
8 :Premiere &:: this command line starts the preferred editor and waits 30 seconds to allow it to start
9 set /p EDITOR=Enter the .exe file for your prefered editor should look like: 'Adobe Premiere Pro.exe':
10 start "" "%EDITOR%"
11 echo Starting Process. . . Please Wait
12 timeout /t 30
13 tasklist | find /I "%EDITOR%" &:: The next couple of lines test for the editor to see if it opened or not
14 if errorlevel 1 (
15      echo could not start process 
16      goto :FailEditor
17 ) Else (
18      echo Process completed, next question--->
19      goto :choice
20 )


  


  so instead of starting at line 1 i would like to start at line 6 to bypass the longest section of the code.

  


  Im thinking its something along the lines of

  


  Start M:\REMUX.bat at line 6

  


  however AT is a command to tell a time to start the batch file so im not sure

  


• c# and ffpmeg command line trouble

  26 février 2016, par mirzahat

  I have a php code that calls ffmpeg from the windows command line (because I run apache locally) with :

  //ffmpeg -i input.mp4 -r 20 output.gif
  
          echo exec('C:\ffmpeg\bin\ffmpeg.exe -i videos/file.avi -r 10  -s 450x230 videos/file.gif');

  And it works fine ! Now I wrote a C# program and I try to do the same thing with :

   System.Diagnostics.Process.Start

  but it fails.

  Question : How do I execute the same command from the PHP code but from inside a C# code ?