A script for splitting videos using ffmpeg v2

 //author:hnrayer@gmail.com

#if _MSC_VER

#define inline __inline

#endif

#include <libavformat/avformat.h>

#include <libavcodec/avcodec.h>

#include <libavutil/log.h>

#include <stdio.h>

#include <stdlib.h>

#pragma warning(disable : 4996)

int main(int argc, char **argv)

{

AVFormatContext *piFormatCtx = NULL;

//the number of segments

char *pszSegments = NULL;

int   i_segments;       

//the duration of each segment

int sum_secs = 0;

int step = 0;

char szcmd[128];//command

char *pszFullname;

char drive[_MAX_DRIVE];

char dir[_MAX_DIR];

char fname[_MAX_FNAME];

char ext[_MAX_EXT];

if (argc < 3)

{

printf("usage: ffsplit infile num [num:the number of segments]\n");

return -1;

}

pszSegments = argv[2];

i_segments = atoi(pszSegments);

//Register all formats and codecs

av_register_all();

//Open video file

if(avformat_open_input(&piFormatCtx, argv[1], NULL, NULL) != 0)

{

return -1; 

}

//Retrieve stream information

if(avformat_find_stream_info(piFormatCtx, NULL) < 0)

{

return -1; 

}

//print the info of duration

av_log(NULL, AV_LOG_INFO, "  Duration: ");

if (piFormatCtx->duration != AV_NOPTS_VALUE)

{

int hours, mins, secs, us;

int64_t duration = piFormatCtx->duration + 5000;  

secs = duration / AV_TIME_BASE;

us = duration % AV_TIME_BASE; 

mins = secs / 60;

secs %= 60;

hours = mins / 60;

mins %= 60;

av_log(NULL, AV_LOG_INFO, "%02d:%02d:%02d.%02d\n", hours, mins, secs, (100 * us) / AV_TIME_BASE); 

sum_secs = hours*60*60 + mins*60 +secs;

} 

else 

{

av_log(NULL, AV_LOG_INFO, "N/A");

}

step = sum_secs / i_segments;

pszFullname = piFormatCtx->filename;

_splitpath(pszFullname, drive, dir, fname, ext);

/

sprintf(szcmd, "ffmpeg -i %s -codec copy -map 0 -f segment -segment_time %d %s_%%03d%s", argv[1], step, fname, ext);

puts(szcmd);

system(szcmd);

//Close the video file

avformat_close_input(&piFormatCtx);

return 0;

}

转载于:https://www.cnblogs.com/elesos/archive/2013/04/08/3008523.html