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• RTSP Stream Recording using FFMPEG

  9 juillet 2022, par Shanavas K Abdul Rahman

  I am not in to scripting. It would be really helpful if someone can help with a bash or python script on Raspbian v5 for my below requirement.

  


  I am trying to locally record Eufy Cam human detection using ffmpeg. I have managed to find the command to fetch the stream which is ffmpeg -hide_banner -y -loglevel verbose -rtsp_transport tcp -use_wallclock_as_timestamps 1 -i rtsp://192.168.xx.xx/live0 -vcodec copy -acodec copy -f segment -reset_timestamps 1 -segment_time 900 -segment_format mkv -strftime 1 "/media/pi/hdd/cam_name/camname$(date +"%Y-%m-%d-%H-%M-%S").mkv.

  


  Since these are battery operated cameras I cannot stream continuously. Camera generates stream only when it detects human as per my camera configuration. So when there is no human presence, ffmpeg return error "404 Stream Not Found" which is expected result. I want ffmpeg to reattempt in endless loop if previous attempts returns error 404 Stream Not Found.

  


  When human presence is detected, stream is being recorded to the mentioned location which works well. I need ffmpeg to reconnect even after successful stream fetch to seek for next motion recording. Successful stream download ends as follows.

  


  No more output streams to write to, finishing.

  


  :04.26 bitrate=N/A speed=0.559x    
[segment @ 0x2172d60] segment:'/media/pi/hdd/cam_name/camname2022-07-09-11-13-29.mkv' count:0 ended
[AVIOContext @ 0x2143630] Statistics: 16 seeks, 13 writeouts
frame=   31 fps=4.1 q=-1.0 Lsize=N/A time=00:00:04.26 bitrate=N/A speed=0.559x    
video:359kB audio:8kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
Input file #0 (rtsp://192.168.100.16/live0):
  Input stream #0:0 (video): 34 packets read (373534 bytes); 
  Input stream #0:1 (audio): 42 packets read (7884 bytes); 
  Total: 76 packets (381418 bytes) demuxed
Output file #0 (/media/pi/Extreme 900/Gate_View/GateView2022-07-09-11-13-29.mkv):
  Output stream #0:0 (video): 31 packets muxed (367940 bytes); 
  Output stream #0:1 (audio): 42 packets muxed (7884 bytes); 
  Total: 73 packets (375824 bytes) muxed


  


  In summary, I am looking for a script with below conditions.

  


  IF terminal returns 404 Stream Not Found" OR "packets muxed THEN repeat same command in endless loop.

  


  I have several battery operated cameras. Please help with script.

  


  Thanks in advance.

  


  Regards,

  


  Shanavas Abdulrahman

  


• Creating iPhone compatible video with ffmpeg from an image and MP3 file

  22 février 2020, par Gracie

  I have the following command that I have used to create an MP4 video file from an image and an MP3 file, it plays fine in a Chrome browser on desktop and on an Android phone - but it doesn’t work on an iPhone 10. Do I need some extra codec or setting to make this compatible for iPhone ? Should I be converting this into a MPEG file instead for wider compatibility ?

  ffmpeg -loop 1 -i 6f4aa5dfefc4dd32186f41315ad9d1e2-0.png -i "music.mp3" -c:v libx264 -tune stillimage -c:a aac -b:a 192k -pix_fmt yuv420p -shortest aa-image0.mp4

  Here are the ffprobe details for the input MP3 file used to create the MP4 video and also the ffprobe for that output file :

  Input #0, wav, from 'download0.mp3':
  
    Duration: 00:00:35.94, bitrate: 384 kb/s
  
      Stream #0:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 24000 Hz, 1 channels, s16, 384 kb/s

  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'aa-image0.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf58.22.100
  
    Duration: 00:00:38.76, start: 0.000000, bitrate: 505 kb/s
  
      Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 2664x1498 [SAR 1:1 DAR 1332:749], 367 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc (default)
  
      Metadata:
  
        handler_name    : VideoHandler
  
      Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, mono, fltp, 138 kb/s (default)
  
      Metadata:
  
        handler_name    : SoundHandler

  The video seems to play on the iPhone, but the audio seems to start/stop constantly. Like it is a streaming issue (even though it is not). Maybe an MP3 encoding issue when I created the video ?

  Here are the test files I have used and created (any iPhone users will likely find the MP4 will not play the audio in the video properly) :

  https://ffmpeg-iphone-issue.netlify.com/tesla.jpg

  https://ffmpeg-iphone-issue.netlify.com/tesla.mp3

  https://ffmpeg-iphone-issue.netlify.com/tesla.mp4 (OUTPUT - Created from the 2 files above)

  ---

  In summary, two FFmpeg commands are required :

  1) Used to create iPhone/iOS compatible videos in FFmpeg from an image and MP3 (A slight modification to the command at the top of the page)

  and

  2) An FFmpeg command that could be used to fix or re-encode the video above so that it works on iPhone (A new command incorporating the parts so it works with iPhone and then to rebuild and fix the "broken" video. In a similar fashion to this video where he fixes a broken video https://www.youtube.com/watch?v=2FhmbKKh6mc [command in Youtube description])

• Replace Special Characters In Batch-File Variable Feeding ffmpeg program

  14 janvier 2019, par whereswaller

  I am attempting to write a batch-file that leverages ffmpeg.exe to convert all files in a folder structure to mp3 format (specifically 128 KBps).

  My batch-file is presently unable to process filenames (constructed by concatenating the %_SOURCE% and %%~F variables) containing certain special characters generating the following errors :

  No such file or directory

  • … ellipsis sign
  • – en dash
  • — em dash
  • − minus sign

  Invalid argument

  • ‘ and ’ curved single quotation marks
  • “ and ” curved double quotation marks

  Invalid argument (yet sometimes passes depending on where symbol is in the filename, for example, seems to work if placed between the n and t of Dont in C:\Users\Test\Documents\Input\Peter Bjorn And John - I Know You Dont Love Me.mp3)

  • - hyphen
  • ! exclamation mark
  • ~ tilde
  • ' non-curved single quotation mark
  • = equals sign
  • + plus sign
  • % percentage sign
  • ( open bracket

  How can I modify my batch-file script so that the %%~F variable escapes these characters correctly ?

  Example current filename input : C:\Users\Test\Documents\Input\Peter Bjorn And John - I Know You Don't Love Me.mp3

  Example desired filename input : C:\Users\Test\Documents\Input\Peter Bjorn And John - I Know You Don"^'"t Love Me.mp3

  Script (see line beginning C:\ffmpeg\bin\ffmpeg.exe) :

  @echo off
  
  setlocal EnableExtensions DisableDelayedExpansion
  
  
  
  rem // Define constants here:
  
  set "_SOURCE=C:\Users\Test\Documents\Input" & rem // (absolute source path)
  
  set "_TARGET=C:\Users\Test\Documents\Output"  & rem // (absolute target path)
  
  set "_PATTERN=*.*" & rem // (pure file pattern for input files)
  
  set "_FILEEXT=.mp3"   & rem // (pure file extension of output files)
  
  
  
  pushd "%_TARGET%" || exit /B 1
  
  for /F "delims=" %%F in ('
  
      cd /D "%_SOURCE%" ^&^& ^(rem/ list but do not copy: ^
  
          ^& xcopy /L /S /Y /I ".\%_PATTERN%" "%_TARGET%" ^
  
          ^| find ".\" ^& rem/ remove summary line;
  
      ^)
  
  ') do (
  
      2> nul mkdir "%%~dpF."
  
  
  
      rem // Set up the correct `ffmpeg` command line here:
  
      set "FFREPORT=file=C\:\\Users\\Test\\Documents\\Output\\ffreport-%%~F.log:level=32"
  
      "C:\ffmpeg\bin\ffmpeg.exe" -report -n -i "%_SOURCE%\%%~F" -vn -c:a libmp3lame -b:a 128k "%%~dpnF%_FILEEXT%"
  
      if not errorlevel 1  if exist "%%~dpnF%_FILEEXT%" del /f /q "%_SOURCE%\%%~F"
  
  
  
  )
  
  popd
  
  
  
  endlocal
  
  pause