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• Why does my video have an audio/mp4 mime type [duplicate]

  22 février 2018, par Tucker Peebles

  This question already has an answer here :

  • How do you safely identify whether an mp4 is an audio only or video file
    
    1 answer
    
  • Using ffprobe to check audio-only files
    
    3 answers
    

  I have a video file but it has a mime type of "audio/mp4". Why would that happen. The user who sent it to me said it came from a Flip video camera and was uploaded by usb to her computer.

  In my program, I’m checking for ’video/mp4’ mime type when I’m trying to determine if it’s a video, but I want to eventually support audio uploads too which would need to check ’audio/mp4’.

  Unfortunately, the video is a personal video of the user’s child so I don’t want to upload it here. Let me know if there is any information I can provide about the video that would help.

• Ffmpeg returning error code 1 in AWS Lamda function

  14 avril 2018, par Tometoyou

  I’m running a lambda function which takes an mp4 video, and adds a watermark of a png image over the top of it in the bottom right hand corner (with a 10px margin). It then outputs that image to a temporary location. It keeps failing with Error code 1, but that isn’t very helpful. I’m using a binary version of ffmpeg that is specified in the main directory of the code. I know that ffmpeg is set up correctly due to using it in another lambda function in this way, which works. But adding an overlay fails. Here is the relevant part of my code :

  function addWatermark(next) {
  
      var ffmpeg = child_process.spawn("ffmpeg", [
  
        "-i", target, // url to stream from
  
        "-i", watermarkPath,
  
        "-filter_complex" ,"overlay=x=W-w-10:y=H-h-10:format=rgb,format=yuv420p",
  
        "-c:a", "copy",
  
        "pipe:1"
  
      ]);
  
      ffmpeg.on("error", function(err) {
  
        console.log(err);
  
      })
  
      ffmpeg.on("close", function(code) {
  
        if (code != 0 ) {
  
          console.log("child process exited with code " + code); // Always exits here.
  
        } else {
  
          console.log("Processing finished !");
  
        }
  
        tmpFile.end(); 
  
        next(code);
  
      });
  
      tmpFile.on("error", function(err) {
  
        console.log("stream err: ", err);
  
      });
  
      ffmpeg.on("end", function() {
  
        tmpFile.end();  
  
      })
  
      ffmpeg.stdout.pipe(tmpFile)
  
      .on("error", function(err){
  
        console.log("error while writing: ",err);
  
      });
  
  }

  Can anyone spot what may be wrong ?

  UPDATE

  I’ve managed to print out some more logs, I’m getting the error :

  [NULL @ 0x42923e0] Unable to find a suitable output format for 'pipe:1'

• PHP execute batch files to start recording ffmpeg and to kill ffmpeg

  28 février 2018, par Mitchell Day

  Hi was just wondering if anyone knows a way that i can run a batch file that contains multiple "start ffmpeg" commands, that allows me to kill it using a batch file at some random point in time.

  I have one batch that starts 4 videos recording from a rtsp feed to file. And another one that taskkills that ffmpeg process. The problem is that i can run these successfully by running in cmd prompt, but when i try to use exec(record.bat) or popen() etc, it runs the ffmpeg process in the background, and the stoprecord.bat can’t kill it error is :

  The Process with PID x <child process="process" of="of" pid="pid" y="y"> could not be terminated.
  
  
  
  
  
  Reason: This Process can only be termintated forcefully (with /f option)
  
  </child>

  I don’t want to force it, because the mp4 file corrupts when you force close it. When i run the bat files directly i dont need that force option. I have tried giving the folders full permissions for the IIS_IUSRS user, i have made the bat and folder creater as IIS_IUSRS (thought the mkdir in the batch gives not permission to IIS usr which it is recording the video to).

  Any one have any clue why this wouldnt work. I have put the bat files below and the php script which calls them.

  Record.bat

  cd C:\inetpub\wwwroot\ESTF\batch
  
  tasklist /FI "IMAGENAME eq ffmpeg_sr.exe" | find ":" > NUL
  
  if errorlevel 1 exit
  
  set MEDIA_DIR=C:\inetpub\wwwroot\ESTF\media\recordings
  
  set WEB_DIR=C:\inetpub\wwwroot\estf\
  
  set VLC_DIR=C:\Program Files\VideoLAN\VLC
  
  set ROOM=simroom
  
  set M=1
  
  set N=1
  
  set CURRENT_DAY=day1
  
  set FFMPEG_DIR=C:\inetpub\wwwroot\ESTF\ffmpeg\bin                
  
  call "date.bat"
  
  if not exist %MEDIA_DIR%\curDate.txt (
  
      mkdir %MEDIA_DIR%
  
      icacls %MEDIA_DIR% /grant Everyone:(f)
  
      echo %DATESTR%>%MEDIA_DIR%\curDate.txt
  
      echo %CURRENT_DAY%>%MEDIA_DIR%\curDay.txt
  
      goto :LOOP2
  
  )
  
  if exist %MEDIA_DIR%\curDate.txt (
  
      set /p STORED_DATE=I %STORED_DATE%==%DATESTR% (
  
          set /p CURRENT_DAY=I NOT %STORED_DATE%==%DATESTR% (
  
      echo %DATESTR%>%MEDIA_DIR%\curDate.txt
  
      goto :LOOP1
  
  )
  
  
  
  :LOOP1
  
      set DAY_LOOP=%MEDIA_DIR%\day%M%
  
      if exist %DAY_LOOP% (
  
          set /a M = %M%+1
  
          goto :LOOP1
  
      )
  
      if not exist %DAY_LOOP% (
  
          mkdir %DAY_LOOP%
  
          icacls %DAY_LOOP% /grant Everyone:(f)
  
      )
  
      set CURRENT_DAY=day%M%
  
      @echo %CURRENT_DAY%>%MEDIA_DIR%\curDay.txt
  
  
  
  :LOOP2
  
      set CURRENT_ROOM=%MEDIA_DIR%\%CURRENT_DAY%\%ROOM%\Team%N%
  
      if exist %CURRENT_ROOM% (
  
          set /a N = %N%+1
  
          goto :LOOP2
  
      )
  
      if not exist %CURRENT_ROOM% (
  
          mkdir %CURRENT_ROOM%
  
          icacls %CURRENT_ROOM% /grant Everyone:(f)
  
      )
  
  
  
  cd %FFMPEG_DIR%
  
  
  
  echo %CURRENT_ROOM%>%MEDIA_DIR%\%CURRENT_DAY%\%ROOM%\teamNo.txt
  
  echo recording>%WEB_DIR%\srRecording.txt
  
  start ffmpeg_sr  -i rtsp://192.168.0.50:554/Streaming/Channels/1 -c:v copy -c:a libmp3lame -strict experimental "%CURRENT_ROOM%\1.mp4"
  
  start ffmpeg_sr  -i rtsp://192.168.0.51:554/Streaming/Channels/1 -c:v copy "%CURRENT_ROOM%\2.mp4"
  
  start ffmpeg_sr  -i rtsp://192.168.0.52:554/Streaming/Channels/1 -c:v copy "%CURRENT_ROOM%\3.mp4"
  
  start ffmpeg_sr  -i rtsp://192.168.0.21:554/Streaming/Channels/1 -c:v copy "%CURRENT_ROOM%\4.mp4"
  
  start ffmpeg_sr -f dshow -i audio="Microphone (High Definition Audio Device)" -c:a libmp3lame -strict experimental "%CURRENT_ROOM%\0.mp3"
  
  exit

  Stoprecord.bat

  taskkill /im ffmpeg_sr.exe /t
  
  set WEB_DIR=c:\inetpub\wwwroot\estf\
  
  set FFMPEG_DIR=C:\inetpub\wwwroot\ESTF\ffmpeg\bin\
  
  echo stopped>%WEB_DIR%\srRecording.txt
  
  set /p CURRENT_DAY=p CURRENT_ROOM= -i %CURRENT_ROOM%/0.mp3 -c:v copy -c:a copy -strict experimental -map 0:v:0 -map 1:a:0 %CURRENT_ROOM%/1.mp4
  
  ffmpeg -i %CURRENT_ROOM%/1_temp.mp4 -c:v copy -c:a copy -strict experimental -map 0:v:0 -map 1:a:0 %CURRENT_ROOM%/1.mp4
  
  REM del %CURRENT_ROOM%\1_temp.mp4
  
  del %CURRENT_ROOM%\0.mp3
  
  exit

  record.php

  <?php
  
  echo exec('whoami');
  
  //$recordPath = 'c:\inetpub\wwwroot\estf\batch\srRecord.bat';
  
  //exec('c:\inetpub\wwwroot\estf\batch\srRecord.bat');
  
  $handle = popen('start c:\inetpub\wwwroot\estf\batch\srRecord.bat exit','r');
  
  pclose($handle);
  
  echo $handle;
  
  ?>

  stoprecord.php

  <?php
  
  //exec('c:\inetpub\wwwroot\estf\batch\srRecordStop.exe /dev/null');
  
  $handle = popen('start c:\inetpub\wwwroot\estf\batch\srRecordStop.bat','r');
  
  pclose($handle);
  
  //die();
  
  echo $handle;
  
  ?>

  I have tried exec(), pclose(popen()), shell_exec(), tried adding /dev/nul & to both the php file and ffmpeg in the batch file.

  Regards,

  Mitchell