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• Methods : Adding Smart Quotes to stripHTML's punctuation removal

  14 janvier 2014, par jamierytlewski

  Methods : Adding Smart Quotes to stripHTML's punctuation removal
  Addresses an issue with the word count where smart quotes were not
  
  removed, but the word count counted the words as the punctuation was not
  
  removed.
  Closes gh-811
  

• ffmpeg get the audio stream from mp4 and send it to speech recognition

  12 juillet 2013, par user1896859

  I have few .mp4 video files in which at the start of each video file there is a word, I want to load these files get the audio check what is the spoken word and rename the file accordingly.

  Currently what i am doing is, converting all the mp4 files to wav and then sending the to speech recognition and then doing the renaming stuff.

  Is there a way to cut short the "converting to wav" part out and directly send the mp4 audio stream to speech recognition ??

  Thanks,

• Windows batch - unable to assign a variable within an iterative for loop

  17 janvier 2024, par user23254772

  I am using ffprobe to get the codec_name of subtitles in media files. But when I try to get the codec extension it fails. What am I doing wrong ?

  


  I have edited this post to address the comments and include the complete batch file

  


  Re : ns.txt - this command outputs the stream number of the subtitles :

  


  C:\ffmpeg\bin\ffprobe -loglevel error -select_streams s -show_entries stream=index:stream_tags=language -of csv=p=0 -i "%~dpnx1">ns.txt


  


  and the output in the txt file is :

  


  2
3


  


  Now I need to count the number of lines in this text file which will tell me how many subtitles my media file has :

  


  set "cmd=findstr /R /N "^^" ns.txt | find /C ":""
for /f %%a in ('!cmd!') do set nums=%%a
set /A nums=%nums%-1


  


  In this case nums = 2 but in ffprobe the first subtitle is s:0, so I subtract 1 from nums

  


  My iterative loop is :

  


  FOR %%i in (1,1,%nums%) DO (
C:\ffmpeg\bin\ffprobe.exe -v quiet -select_streams s:%%i -show_entries stream=%arg% -of default=noprint_wrappers=1:nokey=1 -i "%~dpnx1" >sub.txt
set /p codecs=code>

  


  Which puts the codec name in sub.txt and I create the variable codecs to store this value.

  


  Then I need to determine the appropriate container [extension] for the subtitle - here I changed my code from what I posted earlier :

  


  if !codecs! == mov_text set codecs1=srt
if !codecs! == subrip set codecs1=srt
if !codecs! == ass set codecs1=ass
if !codecs! == webvtt set codecs1=vtt
if !codecs! == ttml set codecs1=ttml
if !codecs! == dvb_subtitle set codecs1=dvbsub
if !codecs! == dvd_subtitle set codecs1=dvdsub
if !codecs! == hdmv_pgs_subtitle setcodecs1=sup
if !codecs! == xsub set codecs1=xsub


  


  Then I demux [extract] the subtitle using ffmpeg :

  


  c:\ffmpeg\bin\ffmpeg -i "%~dpnx1" -an -vn -c:s "!codecs!" "%~n1_d."!codecs1!"


  


  This is working, except I have an extra iteration, my output is :

  


  Mediafile: C:\Users\UNOIT\Desktop\Tears of Steel_2sub.mkv
subtile: Tears of Steel_2sub_d.srt
subtile: Tears of Steel_2sub_d.ass
subtile: Tears of Steel_2sub_d.ass
File 'Tears of Steel_2sub_d.ass' already exists. Overwrite? [y/N]


  


  And if the media file has only one subtitle, my ffmpeg output is :

  


  Mediafile: C:\Users\UNOIT\Desktop\_Jan2024-Media\mkv\Tears of Steel_ass.mkv
subtile: Tears of Steel_ass_d.ass
subtile: Tears of Steel_ass_d.ass
File 'Tears of Steel_ass_d.ass' already exists. Overwrite? [y/N]
subtile: Tears of Steel_ass_d.ass
File 'Tears of Steel_ass_d.ass' already exists. Overwrite? [y/N]


  


  I can choose not to overwrite the file - but obviously there is a problem with my iterative loop - maybe a subroutine would work

  


  Here is the batch file :

  


  ECHO OFF
SETLOCAL ENABLEDELAYEDEXPANSION
set "arg=codec_name"
set "arg1=codec_name"
set "arg2=codec_name"
echo Mediafile: %~dpnx1
C:\ffmpeg\bin\ffprobe -v quiet -loglevel error -select_streams s -show_entries stream=index:stream_tags=language -of csv=p=0 -i "%~dpnx1" >ns.txt
set "cmd=findstr /R /N "^^" ns.txt | find /C ":""
for /f %%a in ('!cmd!') do set nums=%%a
set /A nums=%nums%-1
FOR %%i in (0,1,%nums%) DO (
    C:\ffmpeg\bin\ffprobe.exe -v quiet -select_streams s:%%i -show_entries stream=%arg% -of default=noprint_wrappers=1:nokey=1 -i "%~dpnx1" >sub%%i.txt
    set /p codecs=code>