Ffmepg
Usage
# mylist.txt >>> file '1.mp4' file '2.mp4' file '3.mp4' # 这些文件是相对路径，如使用绝对路径需要添加 `-safe 0` 参数 $ ffmpeg -f concat -i mylist.txt -c copy output.mp3 #or output.mp4
对有字母和数字的文件名排序后合并shell version
原因 kevin大神合并的文件是有漏的，而我想合并一些只是自己喜欢学过的比较easy的 所以
1. 得到文件列表
➜ 111 for loop in `ls`
for> do
for> echo $loop
for> done
englishpod_B0111mydg.mp3
englishpod_B0113mydg.mp3
englishpod_B0115mydg.mp3
englishpod_B0119mydg.mp3
englishpod_C0112mydg.mp3
englishpod_C0114mydg.mp3
englishpod_C0118mydg.mp3
englishpod_D0117mydg.mp3
2. 按字母 awk sort
➜ 111 awk -v OFS='\t' '{rec=$0; gsub(/[^[:digit:]]+/, "", rec); print rec, $0}' 0 |sort -nk1 | cut -d $'\t' -f2-
englishpod_B0111mydg.mp3
englishpod_C0112mydg.mp3
englishpod_B0113mydg.mp3
englishpod_C0114mydg.mp3
englishpod_B0115mydg.mp3
englishpod_D0117mydg.mp3
englishpod_C0118mydg.mp3
englishpod_B0119mydg.mp3
awk -v OFS='\t' '{rec=$0; gsub(/[^[:digit:]]+/, "", rec); print rec, $0}' 0 |sort -nk1 | cut -d $'\t' -f2- >list.txt
3. 添加head
➜ 111 sed "s/^/file '/g" list.txt
file 'englishpod_B0111mydg.mp3
file 'englishpod_C0112mydg.mp3
file 'englishpod_B0113mydg.mp3
file 'englishpod_C0114mydg.mp3
file 'englishpod_B0115mydg.mp3
file 'englishpod_D0117mydg.mp3
file 'englishpod_C0118mydg.mp3
file 'englishpod_B0119mydg.mp3
添加 tail
➜ 111 sed "s/$/&'/g" list.txt
file 'englishpod_B0111mydg.mp3'
file 'englishpod_C0112mydg.mp3'
file 'englishpod_B0113mydg.mp3'
file 'englishpod_C0114mydg.mp3'
file 'englishpod_B0115mydg.mp3'
file 'englishpod_D0117mydg.mp3'
file 'englishpod_C0118mydg.mp3'
file 'englishpod_B0119mydg.mp3'
cat mylist.txt #最后文件列表文件排序后如下
file 'englishpod_B0111mydg.mp3'
file 'englishpod_C0112mydg.mp3'
file 'englishpod_B0113mydg.mp3'
file 'englishpod_C0114mydg.mp3'
file 'englishpod_B0115mydg.mp3'
file 'englishpod_D0117mydg.mp3'
file 'englishpod_C0118mydg.mp3'
file 'englishpod_B0119mydg.mp3'
ffmpeg -f concat -i mylist.txt -c copy 111-120.mp3
shell 解说
awk -v OFS='\t' '{rec=$0; gsub(/[^[:digit:]]+/, "", rec); print rec, $0}' file
| sort -nk1 | cut -d $'\t' -f2-
bc14de
cd 18
abc90
100def
awk用于在输入中添加仅使用gsub的数字字符的第一列。
sort -nk1用于对第一列的输入进行数字排序。
cut最终用于截断第一列。
awk -v OFS='\t' '{rec=$0; gsub(/[^[:digit:]]+/, "", rec); print rec, $0}' file \
| sort -nk1 | cut -d $'\t' -f2-
bc14de
cd 18
abc90
100def
awk is used to add a first column in input with only numeric characters using gsub
sort -nk1 is used for sorting input numerically on first column
cut is finally used to truncate first column
https://stackoverflow.com/questions/31889233/how-to-sort-alphanumeric-by-numbers-in-shell
https://wangchujiang.com/reference/docs/ffmpeg.html
install
yum
rpm --import /etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-7 rpm --import http://li.nux.ro/download/nux/RPM-GPG-KEY-nux.ro #rpm -Uvh http://li.nux.ro/download/nux/dextop/el7/x86_64/nux-dextop-release-0-1.el7.nux.noarch.rpm sudo rpm -Uvh http://li.nux.ro/download/nux/dextop/el7/x86_64/nux-dextop-release-0-5.el7.nux.noarch.rpm yum install -y ffmpeg #ffmpeg-devel 开发包
