python和C语言视频处理
import os#视频处理
def file_name(path_file):
FileName = os.path.basename(path_file)#带后缀的文件名(不含路径)
FileName_NoExtension = FileName.split(\'.\')[0]#不带后缀的文件名(此方法不适用于文件名含多个点号的文件)
Extension_Name = os.path.splitext(path_file)[-1]#后缀
return FileName
class video():
def __init__(self):
import subprocess
print(\'(1)视频合并\n(2)视频剪辑\n(3)视频格式转换\n(4)提取音频\n(5)音视频合并\n(6)退出\')
b = eval(input(\'请选择:\n\'))
flag = input(\'是否只执行此项任务? yes or no\n\')
while True:
if(b==1):
self.video_convert()
elif(b==2):
self.video_clip()
elif(b==3):
self.video_format_conversion()
elif(b==4):
print(\'请输入视频的存储路径:\')
video = input(r\'\')
cmd = \'ffmpeg -i {} -f mp3 -vn {}\'.format(video, video+\'.mp3\')
subprocess.call(cmd,shell=True)
print(\'提取完成!\')
elif(b==5):
self.video_audio_merge()
elif(b==6):
break
else:
print(\'输入有误!\')
break
if (flag==\'no\' or flag==\'NO\'):
print(\'(1)视频合并\n(2)视频剪辑\n(3)视频格式转换\n(4)提取音频\n(5)音视频合并\n(6)退出\')
b = eval(input(\'请选择:\n\'))
#视频合并
def video_convert(self):
import subprocess
print(\'请输入视频个数:\')
num = eval(input())
cmd = \'ffmpeg -i "concat:\'
for i in range(num):
print(\'请输入视频%d的存储路径:\'%(i+1))
a = input(r\'\')
cmd = cmd + \'{}|\'.format(a)
cmd = cmd + \'" -c copy {}\'.format(a.replace(\'.mp4\',\'_merge.mp4\'))
subprocess.call(cmd,shell=True)
print(\'合并完成!\')
#\'ffmpeg -i "concat:{}|{}|{}|" -c copy {}\'
#视频格式转换
def time(self,file_path):
import cv2
cap = cv2.VideoCapture(file_path)
# get方法参数按顺序对应下表（从0开始编号)
rate = cap.get(5) # 帧速率
FrameNumber = cap.get(7) # 视频文件的帧数
duration = FrameNumber/rate/60 # 帧速率/视频总帧数 是时间，除以60之后单位是分钟
minutes = int(duration)
seconds = int((duration - minutes) * 60)
return str(minutes) + \':\' + str(seconds)
def video_format_conversion(self):
import subprocess
while True:
print(\'请输入视频路径:\')
video = input()
#print(\'请输入需要转换的视频格式:\')
style = \'mp4\'#input()
time = self.time(video)
cmd = \'ffmpeg -i {} -ss 00:00:00 -c copy -to {} {}\'.format(video,time,file_name(video))
subprocess.call(cmd,shell=True)
print(\'转换完成!\')
#视频剪辑
def video_clip(self):
import subprocess
print(\'请输入视频路径:\')
video = input()
print(\'请输入开始时间:\')
start = input()
print(\'请输入结束时间:\')
end = input()
cmd = \'ffmpeg -i {} -ss {} -c copy -to {} {}\'.format(video,start,end,video.replace(\'.mp4\',\'_clip.mp4\'))
subprocess.call(cmd,shell=True)
print(\'剪辑完成!\')
#音视频合并
def video_audio_merge(self):
import subprocess
print("请输入视频文件存放路径:")
video = input(r\'\')
print("请输入音频文件存放路径:")
audio = input(r\'\')
cmd = \'ffmpeg -i {} -i {} -c:v copy -c:a aac -strict experimental {}\'.format(video,audio,video.replace(\'.mp4\',\'_merge.mp4\'))
subprocess.call(cmd,shell=True)
print(\'合并完成!\')
if __name__ == \'__main__\':
video()
C语言:
#include<stdio.h>#include<string.h>
char* get_name(char* path, int choice){
char pure_file_name[100],file_name[100],extension_name[100];
int i,j,flag = 0;
int len = strlen(path); //取字符串长度
////////////////////////获取后缀名 //////////////////
for(i=len-1; i>=0; i--)
if(path[i] == \'.\'){ //找到最后一个点号
strcpy(extension_name,&path[i+1]);//获取后缀名
break;
}
/////////////////////获取文件名(不含路径,含后缀)////////////////////////
for(i=len-1; i>=0; i--)
if(path[i] == \'\\\'){ //找到最后一个斜杠
strcpy(file_name,&path[i+1]);//获取文件名(不含路径,含后缀)
break;
}
/////////////////////////获取纯文件名(不含路径和后缀)////////////////////////////////
for(i=len-1; i>=0; i--){
if(path[i] == \'.\' && !flag){
j = i; //记录最后一个点号位置
flag = 1;
}
if(path[i] == \'\\\'){ //找到最后一个斜杠
strncpy(pure_file_name,path+i+1,j-i-1);//获取纯文件名(不含路径和后缀)
break;
}
}
char* result;
switch(choice){
case 1:
strcpy(result,file_name);//文件名(不含路径,含后缀)
break;
case 2:
strcpy(result,pure_file_name);//纯文件名(不含路径和后缀)
break;
case 3:
strcpy(result,extension_name);//后缀
break;
default:
return "choice error!";
}
return result;
}
char* str_replace(char* str,char* oldstr,char* newstr){
char bstr[strlen(str)*2];//转换缓冲区
int i;
memset(bstr,0,sizeof(bstr));
for(i=0; i<strlen(str); i++){
if(!strncmp(str+i,oldstr,strlen(oldstr))){//查找目标字符串
strcat(bstr,newstr);
i = i + strlen(oldstr) - 1;
}else{
strncat(bstr,str+i,1);//保存一字节进缓冲区
}
}
char tmp[strlen(str)*2];
strcpy(tmp,bstr);
return tmp;
}
//视频剪辑
void video_clip(){
char video[50],start[50],end[50],cmd[500];
printf("请输入视频路径:\n");
scanf("%s",video);
printf("请输入开始时间:\n");
scanf("%s",start);
printf("请输入结束时间:\n");
scanf("%s",end);
str_replace(video,".mp4","_clip.mp4");
//cmd = \'ffmpeg -i {} -ss {} -c copy -to {} {}\'.format(video,start,end,video.replace(\'.mp4\',\'_clip.mp4\'))
//sprintf(cmd, "%s%s%s%s%s%s%s%s", "ffmpeg -i ", video, " -ss ", start, " -c copy -to ", end, " ", video);
sprintf(cmd,"ffmpeg -i %s -ss %s -c copy -to %s %s",video,start,end,str_replace(video,".mp4","_clip.mp4"));
system(cmd);
printf("剪辑完成!\n");
}
//音视频合并
void video_audio_merge(){
char video[50],audio[50],cmd[100];
printf("请输入视频文件存放路径:\n");
scanf("%s",video);
printf("请输入音频文件存放路径:\n");
scanf("%s",audio);
str_replace(video,".mp4","_merge.mp4");
sprintf(cmd,"ffmpeg -i %s -i %s -c:v copy -c:a aac -strict experimental %s",video,audio,str_replace(video,".mp4","_merge.mp4"));
system(cmd);
printf("合并完成!\n");
}
//视频合并
void video_convert(){
int num,i;
printf("请输入视频个数:");
scanf("%d",&num);
char cmd[500] = "ffmpeg -i \"concat:";
char a[50];
for(i=0; i<num; i++){
printf("请输入视频%d的存储路径:",i+1);
scanf("%s",a);
sprintf(cmd, "%s%s%s", cmd, a, "|");
}
//\'ffmpeg -i "concat:{}|{}|{}|" -c copy {}\';
sprintf(cmd, "%s%s%s", cmd, "\" -c copy ", str_replace(a,".mp4","_merge.mp4"));
system(cmd);
printf("合并完成!");
}
int main(){
void video_clip();
void video_audio_merge();
void video_convert();
char* str_replace(char* str,char* oldstr,char* newstr);
char* get_name(char* path, int choice);
printf("(1)视频合并\n(2)视频剪辑\n(3)提取音频\n(4)音视频合并\n(5)退出\n请选择:");
int b,exit=0;
scanf("%d",&b);
char flag[10];
printf("是否只执行此项任务? yes or no\n");
scanf("%s",flag);
while(!exit){
switch (b){
case 1:
video_convert();
break;
case 2:
video_clip();
break;
case 3:
printf("请输入视频的存储路径:\n");
char video[100];
scanf("%s",video);
char cmd[100] = "ffmpeg -i ";
char audio[100];
strcpy(audio, str_replace(video,".mp4",".mp3"));
sprintf(cmd, "ffmpeg -i %s -f mp3 -vn %s", video, audio);
system(cmd);
printf("提取完成!\n");
break;
case 4:
video_audio_merge();
break;
case 5:
exit = 1;
break;
default:
printf("Error:输入有误!\n");
break;
}
if (flag=="no" || flag=="NO"){
printf("(1)视频合并\n(2)视频剪辑\n(3)提取音频\n(4)音视频合并\n(5)退出\n请选择:\n");
scanf("%d",&b);
}
}
}
import os
#视频处理
def file_name(path_file):
FileName = os.path.basename(path_file)#带后缀的文件名(不含路径)
FileName_NoExtension = FileName.split(\'.\')[0]#不带后缀的文件名(此方法不适用于文件名含多个点号的文件)
Extension_Name = os.path.splitext(path_file)[-1]#后缀
return FileName
class video():
def __init__(self):
import subprocess
print(\'(1)视频合并\n(2)视频剪辑\n(3)视频格式转换\n(4)提取音频\n(5)音视频合并\n(6)退出\')
b = eval(input(\'请选择:\n\'))
flag = input(\'是否只执行此项任务? yes or no\n\')
while True:
if(b==1):
self.video_convert()
elif(b==2):
self.video_clip()
elif(b==3):
self.video_format_conversion()
elif(b==4):
print(\'请输入视频的存储路径:\')
video = input(r\'\')
cmd = \'ffmpeg -i {} -f mp3 -vn {}\'.format(video, video+\'.mp3\')
subprocess.call(cmd,shell=True)
print(\'提取完成!\')
elif(b==5):
self.video_audio_merge()
elif(b==6):
break
else:
print(\'输入有误!\')
break
if (flag==\'no\' or flag==\'NO\'):
print(\'(1)视频合并\n(2)视频剪辑\n(3)视频格式转换\n(4)提取音频\n(5)音视频合并\n(6)退出\')
b = eval(input(\'请选择:\n\'))
#视频合并
def video_convert(self):
import subprocess
print(\'请输入视频个数:\')
num = eval(input())
cmd = \'ffmpeg -i "concat:\'
for i in range(num):
print(\'请输入视频%d的存储路径:\'%(i+1))
a = input(r\'\')
cmd = cmd + \'{}|\'.format(a)
cmd = cmd + \'" -c copy {}\'.format(a.replace(\'.mp4\',\'_merge.mp4\'))
subprocess.call(cmd,shell=True)
print(\'合并完成!\')
#\'ffmpeg -i "concat:{}|{}|{}|" -c copy {}\'
#视频格式转换
def time(self,file_path):
import cv2
cap = cv2.VideoCapture(file_path)
# get方法参数按顺序对应下表（从0开始编号)
rate = cap.get(5) # 帧速率
FrameNumber = cap.get(7) # 视频文件的帧数
duration = FrameNumber/rate/60 # 帧速率/视频总帧数 是时间，除以60之后单位是分钟
minutes = int(duration)
seconds = int((duration - minutes) * 60)
return str(minutes) + \':\' + str(seconds)
def video_format_conversion(self):
import subprocess
while True:
print(\'请输入视频路径:\')
video = input()
#print(\'请输入需要转换的视频格式:\')
style = \'mp4\'#input()
time = self.time(video)
cmd = \'ffmpeg -i {} -ss 00:00:00 -c copy -to {}{}\'.format(video,time,file_name(video))
subprocess.call(cmd,shell=True)
print(\'转换完成!\')
#视频剪辑
def video_clip(self):
import subprocess
print(\'请输入视频路径:\')
video = input()
print(\'请输入开始时间:\')
start = input()
print(\'请输入结束时间:\')
end = input()
cmd = \'ffmpeg -i {} -ss {} -c copy -to {}{}\'.format(video,start,end,video.replace(\'.mp4\',\'_clip.mp4\'))
subprocess.call(cmd,shell=True)
print(\'剪辑完成!\')
#音视频合并
def video_audio_merge(self):
import subprocess
print("请输入视频文件存放路径:")
video = input(r\'\')
print("请输入音频文件存放路径:")
audio = input(r\'\')
cmd = \'ffmpeg -i {} -i {} -c:v copy -c:a aac -strict experimental {}\'.format(video,audio,video.replace(\'.mp4\',\'_merge.mp4\'))
subprocess.call(cmd,shell=True)
print(\'合并完成!\')
if __name__ == \'__main__\':
video()
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