写一个shell脚本实现视频处理

# 起始时间+时长
ffmpeg -ss [start] -i [input] -t [duration] -c copy [output]
# 起始时间+结束时间
ffmpeg -ss [start] -i [input] -to [end] -c copy [output]

ffmpeg -i demo.mp4 -profile:v baseline -level 3.0 
-start_number 0 -hls_time 10 -hls_list_size 0 -f hls output.m3u8

File=source.mp4 # 待处理文件地址
Cut_config=videos.csv # 时间戳数据
Output_path=./output/ # 裁剪、转格式后视频文件输出路径
Qiniu_prefix=videos/source/ # 上传七牛的路径

file=`sed '/^File=/!d;s/.*=//' config`  
cutConfig=`sed '/^Cut_config=/!d;s/.*=//' config`  
outputPath=`sed '/^Output_path=/!d;s/.*=//' config`  
qiniuPrefix=`sed '/^Qiniu_prefix=/!d;s/.*=//' config` 

00:00:45,00:12:10,car-mainmaterial-from-commercial-vehicle
00:12:05,00:15:25,car-mainmaterial-from-nameplate
00:15:25,00:29:00,car-mainmaterial-from-certificate-registry
00:29:00,00:33:00,car-mainmaterial-from-driving-license
00:33:00,00:36:40,car-mainmaterial-from-cargo-import-permission
00:36:40,00:48:33,car-mainmaterial-from-practice-case

# 变量声明
count=0 # 计数
videos=() # 视频列表

# 遍历
for line in $(cat $cutConfig)
do 
    OLD_IFS="$IFS"
    IFS="," # 用,切割字符串
    arr=($line) # 切割完，得到三个字符串的数组
    IFS="$OLD_IFS" # 恢复IFS
    videos[$count]="$outputPath${arr[2]}" # 存储裁剪后的视频片段文件名
    count=$(($count+1))
    # ffmpeg裁剪文件
    ffmpeg -ss ${arr[0]} -t ${arr[1]} -i $file -vcodec copy -acodec copy $outputPath${arr[2]}.mp4 -loglevel quiet 
done

# 转换视频格式
for video in ${videos[@]}
do
    ffmpeg -i $video.mp4 -profile:v baseline -level 3.0  -start_number 0 -hls_time 10 -hls_list_size 0 -f hls $video.m3u8
done

# 上传视频
qshell qupload2 --src-dir=$outputPath --bucket=assets --key-prefix=$qiniuPrefix --skip-suffixes=mp4 --overwrite=true --rescan-local=true