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• Can't stream video when using node-rtsp-stream latest version ?

  6 avril 2022, par cauchuyennhocuatoi

  I am using node-rtsp-stream latest version (0.0.9)

  


  https://www.npmjs.com/package/node-rtsp-stream


  


  I use it (node-rtsp-stream) to stream an IP camera. I also install the latest version of ffmpeg here :

  


  https://www.gyan.dev/ffmpeg/builds/ffmpeg-git-full.7z


  


  Here is my code

  


  Stream = require('node-rtsp-stream');
stream = new Stream({
  name: 'test',
  streamUrl: 'rtsp://username:password@IP:PORT/cam/realmonitor?channel=1&subtype=0',
  wsPort: 9999,
  ffmpegOptions: { // options ffmpeg flags
    '-r': 30 // options with required values specify the value after the key
  }
});


  


  After running nodejs server I get the following output :

  


  Metadata:
    title           : Media Server
  Duration: N/A, bitrate: N/A
  Stream #0:0: Video: hevc (Main), yuv420p(tv), 2688x1520, 25 tbr, 90k tbn
Stream mapping:
  Stream #0:0 -> #0:0 (hevc (native) -> mpeg1video (native))
Press [q] to stop, [?] for help
Output #0, mpegts, to 'pipe:':
  Metadata:
    title           : Media Server
    encoder         : Lavf59.20.101
  Stream #0:0: Video: mpeg1video, yuv420p, 2688x1520, q=2-31, 200 kb/s, 30 fps, 90k tbn
    Metadata:
      encoder         : Lavc59.25.100 mpeg1video
    Side data:
      cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay: N/A
frame=    0 fps=0.0 q=0.0 Lsize=       0kB time=00:00:00.00 bitrate=N/A speed=   0x
video:0kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)


  


  This result means I can't stream video from the camera yet. Output is empty, whereas if I use 0.04 version, I can streamming the videos. Below is output if I using node-rtsp-stream version 0.0.4 :

  


  Metadata:
    title           : Media Server
  Duration: N/A, start: 0.040000, bitrate: N/A
  Stream #0:0: Video: hevc (Main), yuv420p(tv), 2688x1520, 25 fps, 25 tbr, 90k tbn
Stream mapping:
  Stream #0:0 -> #0:0 (hevc (native) -> mpeg1video (native))
Press [q] to stop, [?] for help
Output #0, mpeg1video, to 'pipe:':
  Metadata:
    title           : Media Server
    encoder         : Lavf59.20.101
  Stream #0:0: Video: mpeg1video, yuv420p(tv, progressive), 2688x1520, q=2-31, 200 kb/s, 30 fps, 30 tbn
    Metadata:
      encoder         : Lavc59.25.100 mpeg1video
    Side data:
      cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay: N/A
frame=  314 fps= 32 q=24.8 size=    4768kB time=00:00:10.40 bitrate=3755.7kbits/s dup=51 drop=0 speed=1.05x 


  


  But I need to use the latest version (node-rtsp-stream 0.0.9) for my project, please take a look.

  


• Ffmpeg didn't burn srt subtitle on mkv properly

  16 janvier 2014, par user2600010

  `ffmpeg version:git-fc6de70 (2013-07-18) with libass and fontconfig support.
  command line:ffmpeg.exe -i test.mkv -vf subtitles=test.srt out.mkv
  and i got this error. :

  Metadata:
  
      encoder         : Lavf55.12.102
  
      Stream #0:0(eng): Video: h264 (libx264) (H264 / 0x34363248), yuv420p, 1280x5
  
  76 [SAR 1:1 DAR 20:9], q=-1--1, 1k tbn, 23.98 tbc (default)
  
      Stream #0:1: Audio: vorbis (libvorbis) (oV[0][0] / 0x566F), 48000 Hz, stereo
  
  , fltp (default)
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (h264 -> libx264)
  
    Stream #0:1 -> #0:1 (aac -> libvorbis)
  
  Press [q] to stop, [?] for help
  
  [Parsed_subtitles_0 @ 00000000027b9960] Neither PlayResX nor PlayResY defined. A
  
  ssuming 384x288

  http://tinypic.com/r/2ag52so/5

• Problem with ffmpeg syntax in a for loop in batch file [duplicate]

  24 février 2019, par user1738673

  This question already has an answer here :

  • Batch character escaping
    
    4 answers
    

  My goal is to loop through my music folders, read the bitrate of each file, and if greater than 192k, convert it to 192k, then delete the original. I have working batch files that will do each task. The problem comes when I try to combine the lines from the working code. Depending on where I put the quotation marks, I get varying errors about filenames. So, I need someone who really knows how to read this code to solve the issue.

  Here are each of the working batch files. They do everything exactly as they should.

  First : Loop through files and get the bitrate

  @echo off & setlocal
  
  FOR /r %%i in (*.mp3) DO (
  
              ffprobe -v error -show_entries stream=bit_rate -of default=noprint_wrappers=1:nokey=1 "%%~fi"
  
              )
  
  ECHO Completed %~n0
  
  PAUSE

  Here is the output :

  320000
  
  320000
  
  192000
  
  320000
  
  320000
  
  320000
  
  320000
  
  320000
  
  320000
  
  320000
  
  320000
  
  320000
  
  Completed BrTestLoop6
  
  Press any key to continue . . .

  Next, the batch file for converting all MP3 files to 192k, then deleting the orginal :

  @echo off & setlocal
  
  FOR /r %%i in (*.mp3) DO (
  
                ffmpeg -i "%%~fi" -ab 192k -map_metadata 0 -id3v2_version 3 "%%~dpni_192.mp3"
  
                if not errorlevel 1 if exist "%%~fi" del /q "%%~fi"
  
              )
  
  ECHO Completed %~n0
  
  PAUSE

  I get perfect conversions at 192k and all of the originals are deleted.

  Now, the combined version :

  @echo off & setlocal
  
  
  
  FOR /R %%i in (*.mp3) DO (
  
      FOR /F "TOKENS=1 DELIMS==" %%H IN ('ffprobe -v error -show_entries stream=bit_rate -of default=noprint_wrappers=1:nokey=1 "%%i"') DO (
  
          IF %%H GTR 192000 ffmpeg -i "%%i" -ab 192k -map_metadata 0 -id3v2_version 3 "%%~dpni_192.mp3"
  
      )
  
  )
  
  
  
  PAUSE

  I get the following output :

  Argument 'noprint_wrappers' provided as input filename, but 'bit_rate' was already specified.
  
  Argument 'noprint_wrappers' provided as input filename, but 'bit_rate' was already specified.
  
  Argument 'noprint_wrappers' provided as input filename, but 'bit_rate' was already specified.
  
  Argument 'noprint_wrappers' provided as input filename, but 'bit_rate' was already specified.
  
  Argument 'noprint_wrappers' provided as input filename, but 'bit_rate' was already specified.
  
  Argument 'noprint_wrappers' provided as input filename, but 'bit_rate' was already specified.
  
  Argument 'noprint_wrappers' provided as input filename, but 'bit_rate' was already specified.
  
  Argument 'noprint_wrappers' provided as input filename, but 'bit_rate' was already specified.
  
  Argument 'noprint_wrappers' provided as input filename, but 'bit_rate' was already specified.
  
  Argument 'noprint_wrappers' provided as input filename, but 'bit_rate' was already specified.
  
  Argument 'noprint_wrappers' provided as input filename, but 'bit_rate' was already specified.
  
  Argument 'noprint_wrappers' provided as input filename, but 'bit_rate' was already specified.
  
  Press any key to continue . . .