Este script converte legendas.srt para webvtt utilizando  ffmpeg, um programa em linha de comando que é composto de uma coleção de software livre e bibliotecas de código aberto.

Para converter a legenda.srt você precisa informar a codificação (encode) da legenda.srt,  por exemplo: ASCII text

Uma forma simples de descobrir qual é a codificação do arquivo é utilizando o comando file. Você também pode baixar o encode.txt ou copiar e colar a lista de codificações: https://trac.ffmpeg.org/attachment/ticket/2431/sub_charenc_parameters.txt

Renomeie o download acima para encode.txt. O arquivo encode.txt deve estar no seu diretorio $HOME.

• Download srt2vtt.sh
• Enviar nova versão

Esconder código-fonte

#/usr/bin/env bash

# PATH
log_path=/tmp/srt2vtt.log                # the output of ffmpeg
list_path=$(find $HOME -name enccode.txt)   # ffmpeg sub charenc parameters (2006)
if [ -z $list_path ];then list_not_found=true ;else list_not_found=false ;fi
# COLORS
red="\033[1;31m"
green="\033[1;32m"
end="\033[0m"

srt=$2 # subtile.srt
check=$(file asd.srt | cut -d':' -f2 | tr -d [:blank:])

# verifies that ffmpeg is installed
if [[ ! -e $(which ffmpeg) ]];then echo -e "${red}ffmpeg isn't installed ${end}" ; exit 1 ;fi

_whitespaces(){
   if [ -n "$srt" -a -e "$srt" ];then
      file $srt
      if [ $? -ne 0 ];then
         echo -e "${red}\nError: whitespaces "
         echo -e "Please run srt2vtt -r to Rename the subtitle${end}\n"
         exit 1
      fi
   fi
}

_fileExist(){
   if ! [ -e "$srt" ];then
      echo -e "${red}\nError: no such file or directory${end}"
      exit 1
   fi
}

_HELP_(){
   echo """
srt2vtt version 1.0
Usage: srt2vtt <option> <subtitle.srt>
   
   -c ) Convert srt to vtt whitout verbose
   -h ) show this Help message
   -v ) enable Verbose mode and convert
   -r ) Rename the subtitle (use in case of the sub has whitespaces)
   -l ) shows the last sub log
   
   by erickDarko 2018
"""
exit 0
}

_rename(){
   if [[ ! -e $(which python3) ]];then echo -e "${red}python3 isn't installed ${end}" ; exit 1 ;fi
   echo """
from os import listdir

ls = listdir()
for c,v in enumerate(ls):
   if 'srt' in v:
      print('mv',end=' ')
      print('\"{}\" \"{}\"'.format(ls[c],v.replace(' ','_')))
      print()
   """ > rename.py
   python3 rename.py > rename
   chmod +x rename ; ./rename 2> /dev/null ; sleep 0.5s ; rm rename*
   echo ; exit 0 
}

_convert(){
   if [ "$check" == "empty" ];then echo -e "${red}Error: empty file${end}"; exit 2 ;fi
   _fileExist      # verifies if the file exist
   _whitespaces   # verifies whitespaces
   len=$(expr ${#srt} - 4)         # length of the subtile without the extension ".srt"
   vtt=$(echo $srt | cut -c-$len)
   if [ -e $vtt.vtt ];then rm -iv $vtt.vtt ;fi    # delete the subtitle if it already exists
   encode=$(file $srt | cut -d":" -f2 | cut -d" " -f2)      # get the file encode
   if [ $list_not_found == false ];then
      # verifies if the encode is on the $list_path
      list=$(cat $list_path | grep "$encode")      
      if [ $1 == false ];then
         for enc in $list;do
            ffmpeg -fix_sub_duration -sub_charenc $enc -i $srt $vtt.vtt &> $log_path   
         done
      else
         for enc in $list;do
            ffmpeg -fix_sub_duration -sub_charenc $enc -i $srt $vtt.vtt 0> $log_path   
         done
      fi
      if [ $? -ne 0 ];then 
         echo -ne "${red}Error: ${end}"
         echo -e "${red}$(cat $log_path | tail -n1)${end}"
         rm $vtt.vtt &> /dev/null
         exit 2
      fi
   else
      while true;do
         echo "File information: $(file $srt)"
         read -p "File encode: " encode
         if [ $1 == false ];then
            ffmpeg -fix_sub_duration -sub_charenc $encode -i $srt $vtt.vtt &> $log_path
         else
            ffmpeg -fix_sub_duration -sub_charenc $encode -i $srt $vtt.vtt 0> $log_path         
         fi
         if [ $? -ne 0 ];then 
            echo -ne "${red}Error: ${end}"
            echo -e "${red}$(cat $log_path | tail -n1)${end}"
            rm $vtt.vtt &> /dev/null
            exit 2
         fi
         break
      done
   fi
}

# srt2vtt parameters
case $1 in
   -h) _HELP_ ;;
   --help) __HELP__ ;;
   -c) _convert false ;;
   -v) _convert true ;;
   -r) _rename ;;
   -l) less $log_path ;;
   *) echo -e "${red}Error: no option was given${end}" ; _HELP_ ;;
esac

if [ -e $vtt.vtt ];then 
   echo -e "\nENCODE: $encode"
   l=$(wc -l $vtt.vtt | cut -d" " -f1)      # lines in the subtitle
   if [ $l -eq 0 ];then
      echo -e "[ ${red}${l}${end} ]"
   else
      echo -e "[ ${green}${l}${end} ]"
      rm -iv $srt    # remove the original subtitle 
   fi
fi

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