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• avcodec/dvbsubdec : DVB subtitles decoder : support of 5 bytes extradata format

  3 février 2014, par mrlika

  avcodec/dvbsubdec : DVB subtitles decoder : support of 5 bytes extradata format
  Reviewed-by : Marton Balint <cus@passwd.hu>
  
  Signed-off-by : Michael Niedermayer <michaelni@gmx.at>
  

  • [DH] libavcodec/dvbsubdec.c

• how to add watermark and subtitles to multi video in the same time with ffmpeg

  19 novembre 2020, par Fady Sawairas

  hello i am using ffmpeg to add watermark to multi video with this code

  


  for %i in ("C :\Users\fady\Downloads\Fady\new2*.mp4") do ffmpeg -i "%i" -i C :\Users\fady\Downloads\convert\cima2u.png -preset ultrafast -filter_complex "[0]scale=1280:720 :-2[bg] ;[bg][1]overlay=main_w-overlay_w-10:10" -b:v 1000k "C :\Users\fady\Downloads\Fady\new\new2% ni.mp4"

  


  now i want to add subtitles to multi video at the same time
like video1.mp4 with subtitle video1.srt
video2.mp4 with subtitle video2.srt
video3.mp4 with subtitle video3.srt

  


  i am wondering is there any code to make it with ffmpeg one time with all video in one folder or i must make each video alone ?

  


• Python script to copy subtitles in their respective mp4 with FFMPEG

  4 mars 2016, par Shywel

  I have many video files (mp4), with their respective subtitles (each video and subtitle have the same name).

  The idea is to create a Python script to invoke ffmpeg to copy each subtitle in a video without re-encoding again. To do the first video, I tried this command on Terminal and it worked OK :

  $ffmpeg -i 01-01-Introduction.mp4 -fix_sub_duration -i 01-01-Introduction.srt -c:s mov_text -c:v copy -c:a copy -map 0:v -map 0:a -map 1 -metadata:s:s:0 language=eng 01-01-Introduction-sub.mp4

  I tried this code in Python 3.5.1 :

  #!/usr/bin/env python3.5
  
  
  
  import os
  
  import subprocess
  
  import fnmatch
  
  
  
  current_dir = os.getcwd()
  
  video_ext = "*.mp4"
  
  subtitle_ext = '*.srt'
  
  def copy_subtitle(current_dir, video_ext):
  
  
  
  for files in os.listdir("."):
  
      if fnmatch.fnmatch(files, video_ext):
  
          mp4 = files
  
      elif fnmatch.fnmatch(files, subtitle_ext):
  
          subtitles = files
  
          print(subprocess.run(["ffmpeg", "-i", "{mp4}".format(**locals()),
  
          "-fix_sub_duration", "-i", "{subtitles}".format(**locals()),
  
          "-c:s mov_text", "-c:v copy", "-map 0:v", "-map 0:a", "-map 1",
  
          "copy_{mp4}".format(**locals())]))
  
  
  
  print(copy_subtitle(current_dir, video_ext))

  ffmpeg threw an error :

  Unrecognized option 'map 0:v'.
  
  Error splitting the argument list: Option not found
  
  CompletedProcess(args=['ffmpeg', '-i', '01-01-Introduction.mp4', 
  
  '-fix_sub_duration', '-i', '01-01-Introduction.srt', '-c:s mov_text', 
  
  '-c:v copy', '-map 0:v', '-map 0:a', '-map 1', 
  
  'copy_01-01-Introduction.mp4'], returncode=1)

  I also tried with this :

  print(subprocess.run(["ffmpeg", "-i", "{mp4}".format(**locals()), 
  
  "-fix_sub_duration", "-i", "{subtitles}".format(**locals()), 
  
  "-c:s mov_text -c:v copy -c:a copy -map 0:v -map 0:a -map 1 -metadata:s:s:0 language=eng", 
  
  "copy_{mp4}".format(**locals())]), sep=' ')

  and the error is :

  Trailing options were found on the command line.
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '01-01-Introduction.mp4':
  
    Metadata:
  
       major_brand     : isom
  
       minor_version   : 1
  
       compatible_brands: isomavc1mp42
  
       creation_time   : 2014-09-15 18:49:34
  
    Duration: 00:01:01.16, start: 0.000000, bitrate: 1099 kb/s
  
      Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 852x480 [SAR 1:1 DAR 71:40], 1002 kb/s, 29.97 fps, 29.97 tbr, 30k tbn, 59.94 tbc (default)
  
      Metadata:
  
        creation_time   : 2014-09-15 18:49:21
  
        handler_name    : GPAC ISO Video Handler
  
      Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 95 kb/s (default)
  
      Metadata:
  
        creation_time   : 2014-09-15 18:49:34
  
        handler_name    : GPAC ISO Audio Handler
  
  Input #1, srt, from '01-01-Introduction.srt':
  
    Duration: N/A, bitrate: N/A
  
      Stream #1:0: Subtitle: sub rip
  
  At least one output file must be specified
  
  CompletedProcess(args=['ffmpeg', '-i', '01-01-Introduction.mp4', 
  
  '-fix_sub_duration', '-i', '01-01-Introduction.srt', '-c:s mov_text 
  
  -c:v copy -c:a copy -map 0:v -map 0:a -map 1 -metadata:s:s:0 
  
  language=eng', 'copy_01-01-Introduction.mp4'], returncode=1)

  Any suggestions ?