bash脚本一次选择多种文件格式进行编码过程

Question

我下载了一个 BASH 脚本（可以使用），它可以使用 handbrake-CLI 进行一些视频转换，但目前它只允许一次从单一文件格式 avi 转换为 mkv。我希望能够让它一次转换任何类型的输入文件（avi、wmv、flv...到 mkv），而不是每次都为每种输入格式更改脚本。如何调整 bash 脚本以允许这样做？

那么我怎样才能让这个带有 input_file_type="avi" 行的 bash 脚本与 input_file_type="avi,wmv,flv,mp4"

PS：我尝试发布 bash 脚本，但是如果有人知道如何以正确的格式将 bash 脚本发布到论坛，那么格式就会变得一团糟，让我知道我会在这里发布而不是下面的链接

[http://pastebin.com/hzyxnsYY][1]

在此处粘贴代码：

#!/bin/sh

###############################################################################
#
# Script to recursively search a directory and batch convert all files of a given
# file type into another file type via HandBrake conversion.
#
# To run in your environment set the variables:
#   hbcli - Path to your HandBrakeCLI
#
#   source_dir - Starting directory for recursive search
#
#   input_file_type - Input file type to search for
#
#   output_file_type  - Output file type to convert into
#
#
# Change log:
# 2014-01-27: Initial release.  Tested on ubuntu 13.10.
#
###############################################################################

hbcli=HandBrakeCLI
source_dir="/media/rt/1tera_ext/1_Video_Stuff/1 Documentary"
#source_dir="/media/rt/1tera_ext/1_Video_Stuff/1 Nova and bbc/Carbon diamonds"



input_file_type="avi"
output_file_type="mkv"

echo "# Using HandBrakeCLI at "$hbcli
echo "# Using source directory " "$source_dir"
echo "# Converting "$input_file_type" to "$output_file_type

# Convert from one file to another
convert() {
        # The beginning part, echo "" | , is really important.  Without that, HandBrake exits the while loop.
        #echo "" | $hbcli -i "$1" -o "$2" --preset="Universal";
        echo "" | $hbcli -i "$1" -t 1 --angle 1 -c 1 -o "$2"  -f mkv  --decomb --loose-anamorphic  --modulus 2 -e x264 -q 20 --cfr -a 1,1 -E faac,copy:ac3 -6 dpl2,auto -R Auto,Auto -B 160,0 -D 0,0 --gain 0,0 --audio-fallback ffac3 --x264-profile=high  --h264-level="4.1"  --verbose=1
        #echo "" | $hbcli -i "$1" -t 1 --angle 1 -c 1 -o "$2"  -f mkv  --decomb -w 640 --loose-anamorphic  --modulus 2 -e x264 -q 20 --cfr -a 1,1 -E faac,copy:ac3 -6 dpl2,auto -R Auto,Auto -B 160,0 -D 0,0 --gain 0,0 --audio-fallback ffac3 --x264-profile=high  --h264-level="4.1"  --verbose=1

}

# Find the files and pipe the results into the read command.  The read command properly handles spaces in directories and files names.
find "$source_dir" -name *.$input_file_type | while read in_file
do
        echo "Processing…"
        echo ">Input  "$in_file

        # Replace the file type
        out_file=$(echo $in_file|sed "s/\(.*\.\)$input_file_type/\1$output_file_type/g")
        echo ">Output "$out_file

        # Convert the file
        convert "$in_file" "$out_file"

        if [ $? != 0 ]
        then
            echo "$in_file had problems" >> handbrake-errors.log
        fi

        echo ">Finished "$out_file "\n\n"
done

echo "DONE CONVERTING FILES"

Answer 1

假设所有文件类型的转换命令都相同，您可以像这样使用单个find：

find "$source_dir" -type f -regex ".*\.\(avi\|wmv\|flv\|mp4\)" -print0 | while IFS= read -r -d $'\0' in_file
do

done

或者，创建一个您感兴趣的文件类型数组并遍历它们：

input_file_types=(avi wmv flv mp4)

# loop over the types and convert
for input_file_type in "${input_file_types[@]}"
do
    find "$source_dir" -name "*.$input_file_type" -print0 | while IFS= read -r -d $'\0' in_file
    do

    done
done

为了正确处理包含空格和换行符的文件名，您应该使用空分隔输出。这就是 -print0 和 read -d $'\0' 的用途。

Answer 2

您可以在find 车道中使用 OR(-o) 运算符。

例如

find "$source_dir" -name *.avi -o -name *wmv -o -name *.flv -o -name *.mp4 | while read in_file

Answer 3

如果通过 bash 运行：

#!/usr/bin/bash

input_file_type="avi|wmv|flv|mp4"

find "$source_dir" -type f|egrep "$input_file_type" | while read in_file
do
        echo "Processing…"
        echo ">Input  "$in_file

        # Replace the file type
        out_file=$(in_file%.*}.${output_file_type}   # replace file type with different command. 
        echo ">Output "$out_file

        # Convert the file
        convert "$in_file" "$out_file"

        if [ $? != 0 ]
        then
            echo "$in_file had problems" >> handbrake-errors.log
        fi

        echo ">Finished "$out_file "\n\n"
done

Answer 4

这是可能对其他人有所帮助的最终代码，对于链接我不知道如何在此处粘贴 bash 脚本而不会弄乱格式感到抱歉

Link to the final code

#!/bin/bash

###############################################################################
#execute using bash mkvconv.sh

# Script to recursively search a directory and batch convert all files of a given
# file type into another file type via HandBrake conversion.
#
# To run in your environment set the variables:
#   hbcli - Path to your HandBrakeCLI
#
#   source_dir - Starting directory for recursive search
#
#   input_file_types - Input file types to search for
#
#   output_file_type  - Output file type to convert into
#
#
# Change log:
# 2014-01-27: Initial release.  Tested on ubuntu 13.10.
#http://stackoverflow.com/questions/21404059/bash-script-to-select-multiple-file-formats-at-once-for-encode-process/21404530#21404530
###############################################################################

hbcli=HandBrakeCLI
source_dir="/media/rt/1tera_ext/1_Video_Stuff/1 Nova and bbc/Carbon diamonds"


input_file_types=(avi wmv flv mp4 webm mov mpg)
output_file_type="mkv"

echo "# Using HandBrakeCLI at "$hbcli
echo "# Using source directory " "$source_dir"
echo "# Converting "$input_file_types" to "$output_file_type

# Convert from one file to another
convert() {
        # The beginning part, echo "" | , is really important.  Without that, HandBrake exits the while loop.
        #echo "" | $hbcli -i "$1" -o "$2" --preset="Universal"; # dont use with preses things are left out
        echo "" | $hbcli -i "$1" -t 1 --angle 1 -c 1 -o "$2"  -f mkv  --decomb --loose-anamorphic  --modulus 2 -e x264 -q 20 --cfr -a 1,1 -E faac,copy:ac3 -6 dpl2,auto -R Auto,Auto -B 160,0 -D 0,0 --gain 0,0 --audio-fallback ffac3 --x264-profile=high  --h264-level="4.1"  --verbose=1

}
# loop over the types and convert
for input_file_types in "${input_file_types[@]}"
do

        # Find the files and pipe the results into the read command.  The read command properly handles spaces in directories and files names.
        #find "$source_dir" -name *.$input_file_type | while read in_file
        find "$source_dir" -name "*.$input_file_types" -print0 | while IFS= read -r -d $'\0' in_file
        #In order to correctly handle filenames containing whitespace and newline characters, you should use null delimited output. That's what the -print0 and read -d $'\0' is for.
        do
                echo "Processing…"
                echo ">Input  "$in_file

                # Replace the file type
                out_file=$(echo $in_file|sed "s/\(.*\.\)$input_file_types/\1$output_file_type/g")
                echo ">Output "$out_file

                # Convert the file
                convert "$in_file" "$out_file"

                if [ $? != 0 ]
                then
                    echo "$in_file had problems" >> handbrake-errors.log
                fi

                echo ">Finished "$out_file "\n\n"
        done
done
echo "DONE CONVERTING FILES"