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• How to run the ffmpeg command using node.js ?

  12 juillet 2019, par Sachin Shah

  In node, When I got the request from /playMovie from App, I need to broadcast the video.

  When I execute this command in terminal it works fine.

  ffmpeg -re -i movie.mkv  -c:v libx264 -preset superfast -tune zerolatency -c:a aac -ar 44100 -f flv rtmp://192.168.1.13/live/myStream

  Now I’m going to setup this dynamic.

  app.use('/playMovie', function (req, res) {
  
    console.log("playMovie...");
  
    let filePaht = 'movie.mkv';
  
    let fileName = 'marvel-avengers';
  
  
  
    let ffmpeg = spawn(`ffmpeg -re -i ${filePaht}  -c:v libx264 -preset 
  
      superfast -tune zerolatency -c:a aac -ar 44100 -f flv 
  
  rtmp://192.168.1.13/live/${fileName}`);
  
       ffmpeg.on('exit', (statusCode) => {
  
     console.log("statusCode ::::::::::::::::::::::::::::::::: ",statusCode);
  
     if (statusCode === 0) {
  
        console.log('conversion successful')
  
     }
  
   })
  
  
  
  ffmpeg
  
    .stderr
  
    .on('data', (err) => {
  
      console.log('err:', new String(err))
  
    })
  
  }); 

  Refrence Link

  While run the app I got this error.

  playMovie...
  
  12/07/2019 15:27:17 31722 [ERROR] uncaughtException { Error: spawn ffmpeg -re -i movie.mkv  -c:v libx264 -preset superfast -tune zerolatency -c:a aac -ar 44100 -f flv rtmp://192.168.1.13/live/marvel-avengers ENOENT
  
  at _errnoException (util.js:1022:11)
  
  at Process.ChildProcess._handle.onexit (internal/child_process.js:190:19)
  
  at onErrorNT (internal/child_process.js:372:16)
  
  at _combinedTickCallback (internal/process/next_tick.js:138:11)
  
  at process._tickCallback (internal/process/next_tick.js:180:9)
  
  code: 'ENOENT',
  
  errno: 'ENOENT',
  
  syscall: 'spawn ffmpeg -re -i movie.mkv  -c:v libx264 -preset superfast -tune zerolatency -c:a aac -ar 44100 -f flv 
  
  rtmp://192.168.1.13/live/marvel-avengers',
  
  path: 'ffmpeg -re -i movie.mkv  -c:v libx264 -preset superfast -tune zerolatency -c:a aac -ar 44100 -f flv rtmp://192.168.1.13/live/marvel-avengers',
  
  spawnargs: [] }

• Combine mp4 files by order based on number from filenames in Python

  14 décembre 2022, par ah bon

  I try to merge lots of mp4 files from a directory test into one output.mp4 using ffmpeg in Python.

  


  import os

path = '/Users/x/Documents/test'

for filename in os.listdir(path):
    if filename.endswith(".mp4"):
        print(filename)


  


  Output :

  


  4. 04-unix,minix,Linux.mp4
6. 05-Linux.mp4
7. 06-ls.mp4
5. 04-unix.mp4
9. 08-command.mp4
1. 01-intro.mp4
3. 03-os.mp4
8. 07-minux.mp4
2. 02-os.mp4
10. 09-help.mp4


  


  I have tried with the solution below from the reference here : ffmpy concatenate multiple files with a file list

  


  import os
import subprocess
import time


base_dir = "/path/to/the/files"
video_files = "video_list.txt"
output_file = "output.avi"

# where to seek the files
file_list = open(video_files, "w")

# remove prior output
try:
    os.remove(output_file)
except OSError:
    pass

# scan for the video files
start = time.time()
for root, dirs, files in os.walk(base_dir):
    for video in files:
        if video.endswith(".avi"):
            file_list.write("file './%s'\n" % video)
file_list.close()

# merge the video files
cmd = ["ffmpeg",
       "-f",
       "concat",
       "-safe",
       "0",
       "-loglevel",
       "quiet",
       "-i",
       "%s" % video_files,
       "-c",
       "copy",
       "%s" % output_file
       ]

p = subprocess.Popen(cmd, stdin=subprocess.PIPE)

fout = p.stdin
fout.close()
p.wait()

print(p.returncode)
if p.returncode != 0:
    raise subprocess.CalledProcessError(p.returncode, cmd)

end = time.time()
print("Merging the files took", end - start, "seconds.")


  


  I have merged them and get an output.mp4 but the files are not merged in order with the first number split by point (1, 2, 3, ...) : which I can get by filename.split(".")[0] :

  


  1. 01-intro.mp4
2. 02-os.mp4
3. 03-os.mp4
4. 04-unix,minix,Linux.mp4
5. 04-unix.mp4
6. 05-Linux.mp4
7. 06-ls.mp4
8. 07-minux.mp4
9. 08-command.mp4
10. 09-help.mp4


  


  How can I merge them correctly and concisely in Python ? Thanks.

  


• Video file not trimming and copying using FFMpeg in C#

  15 mai 2019, par chapperzuk

  I am trying to clip a video using C# in Visual Studios with FFMpeg. I run the code below and it doesn’t come back with any errors, except it doesn’t create a new video file.

  I’ve looked around here to make sure I’m using the correct code, but after multiple attempts it still won’t copy.

  string videoFile = @"C:\Users\dave\Documents\video 1.mp4";
  
  string outputFile = @"C:\Users\dave\Documents\video 2.mp4";
  
  
  
  Process process = new Process();
  
  process.StartInfo.RedirectStandardOutput = true;
  
  process.StartInfo.RedirectStandardError = true;
  
  process.StartInfo.FileName = @"C:\Users\dave\Documents\ffmpeg.exe";
  
  process.StartInfo.Arguments = "ffmpeg -i " + videoFile + " -ss 00:30:00 -t 00:00:10 -c copy " + outputFile;
  
  process.StartInfo.UseShellExecute = false;
  
  process.StartInfo.CreateNoWindow = true;
  
  process.Start();

  I was expecting to get a video cut from the original video, starting at the 30 second mark and lasting 10 seconds, but nothing is created.

  I am using the latest FFMpeg from https://ffmpeg.zeranoe.com/builds/

  UPDATE If I run the code in command prompt - The file comes out corrupt though

  ffmpeg -i "C:\\Users\\dave\\Documents\\video 1.mp4" -ss 00:30:00 -t 00:00:10 -c copy "C:\\Users\\dave\\Documents\\video 2.mp4"
  
  ffmpeg version N-93851-gdcc999819d Copyright (c) 2000-2019 the FFmpeg developers
  
    built with gcc 8.3.1 (GCC) 20190414
  
    configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libdav1d --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-libmfx --enable-amf --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt
  
    libavutil      56. 27.100 / 56. 27.100
  
    libavcodec     58. 52.101 / 58. 52.101
  
    libavformat    58. 27.103 / 58. 27.103
  
    libavdevice    58.  7.100 / 58.  7.100
  
    libavfilter     7. 51.100 /  7. 51.100
  
    libswscale      5.  4.101 /  5.  4.101
  
    libswresample   3.  4.100 /  3.  4.100
  
    libpostproc    55.  4.100 / 55.  4.100
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'C:\\Users\\dave\\Documents\\video 1.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2mp41
  
      creation_time   : 2019-01-15T21:57:04.000000Z
  
      title           : My Movie
  
      encoder         : Lavf56.15.102
  
      description     : This video is about My Movie
  
    Duration: 00:06:48.22, start: 0.000000, bitrate: 1283 kb/s
  
      Stream #0:0(und): Video: mpeg4 (Simple Profile) (mp4v / 0x7634706D), yuv420p, 640x480 [SAR 1:1 DAR 4:3], 1202 kb/s, 29.97 fps, 29.97 tbr, 11988 tbn, 2997 tbc (default)
  
      Metadata:
  
        creation_time   : 2019-01-15T21:57:04.000000Z
  
        handler_name    : VideoHandler
  
      Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 74 kb/s (default)
  
      Metadata:
  
        creation_time   : 2019-01-15T21:57:04.000000Z
  
        handler_name    : SoundHandler
  
  Output #0, mp4, to 'C:\\Users\\dave\\Documents\\video 2.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2mp41
  
      description     : This video is about My Movie
  
      title           : My Movie
  
      encoder         : Lavf58.27.103
  
      Stream #0:0(und): Video: mpeg4 (Simple Profile) (mp4v / 0x7634706D), yuv420p, 640x480 [SAR 1:1 DAR 4:3], q=2-31, 1202 kb/s, 29.97 fps, 29.97 tbr, 11988 tbn, 11988 tbc (default)
  
      Metadata:
  
        creation_time   : 2019-01-15T21:57:04.000000Z
  
        handler_name    : VideoHandler
  
      Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 74 kb/s (default)
  
      Metadata:
  
        creation_time   : 2019-01-15T21:57:04.000000Z
  
        handler_name    : SoundHandler
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (copy)
  
    Stream #0:1 -> #0:1 (copy)
  
  Press [q] to stop, [?] for help
  
  frame=    0 fps=0.0 q=-1.0 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