#include?
extern?“C“
{
????#include?“libavcodec/avcodec.h“
????#include?“libavformat/avformat.h“
????#include?“libswscale/swscale.h“
????#include?“libavdevice/avdevice.h“
}
//‘1‘?Use?Dshow
//‘0‘?Use?VFW
#define?USE_DSHOW?0
//Show?Dshow?Device
void?show_dshow_device（）
{
????AVFormatContext?*pFormatCtx?=?avformat_alloc_context（）;
????AVDictionary*?options?=?NULL;
????av_dict_set（&options“list_devices““true“0）;
????AVInputFormat?*iformat?=?av_find_input_format（“dshow“）;
????printf（“========Device?Info=============\n“）;
????avformat_open_input（&pFormatCtx“video=dummy“iformat&options）;
????printf（“================================\n“）;
}
//Show?Dshow?Device?Option
void?show_dshow_device_option（）
{
????AVFormatContext?*pFormatCtx?=?avformat_alloc_context（）;
????AVDictionary*?options?=?NULL;
????av_dict_set（&options“list_options““true“0）;
????AVInputFormat?*iformat?=?av_find_input_format（“dshow“）;
????printf（“========Device?Option?Info======\n“）;
????avformat_open_input（&pFormatCtx“video=Integrated?Camera“iformat&options）;
????printf（“================================\n“）;
}
//Show?VFW?Device
void?show_vfw_device（）
{
????AVFormatContext?*pFormatCtx?=?avformat_alloc_context（）;
????AVInputFormat?*iformat?=?av_find_input_format（“vfwcap“）;
????printf（“========VFW?Device?Info======\n“）;
????avformat_open_input（&pFormatCtx“list“iformatNULL）;
????printf（“=============================\n“）;
}
//Show?AVFoundation?Device
void?show_avfoundation_device（）
{
????AVFormatContext?*pFormatCtx?=?avformat_alloc_context（）;
????AVDictionary*?options?=?NULL;
????av_dict_set（&options“list_devices““true“0）;
????AVInputFormat?*iformat?=?av_find_input_format（“avfoundation“）;
????printf（“==AVFoundation?Device?Info===\n“）;
????avformat_open_input（&pFormatCtx““iformat&options）;
????printf（“=============================\n“）;
}
#define?USE_DSHOW?1
int?main（int?argc?char*?argv[]）
{
????AVFormatContext	*pFormatCtx;
????int				i?videoindex;
????AVCodecContext	*pCodecCtx;
????AVCodec			*pCodec;

????AVCodecContext	*pH264CodecCtx;
????AVCodec			*pH264Codec;

????av_register_all（）;
????avformat_network_init（）;
????avdevice_register_all（）;//Register?Device
????pFormatCtx?=?avformat_alloc_context（）;
????//抓取屏幕
????AVInputFormat?*ifmt=av_find_input_format（“gdigrab“）;
????if（avformat_open_input（&pFormatCtx“desktop“ifmtNULL）!=0）{
????????????printf（“Couldn‘t?open?input?stream.?“）;
????????????return?-1;
????????}
????if（avformat_find_stream_info（pFormatCtxNULL）<0）
????{
????????printf（“Couldn‘t?find?stream?information.\n“）;
????????return?-1;
????}
????videoindex=-1;
????????for（i=0;?inb_streams;?i++）
????????{
????????????if（pFormatCtx->streams[i]->codec->codec_type==AVMEDIA_TYPE_VIDEO）
????????????{
????????????????videoindex=i;
????????????}
????????}
????????if（videoindex==-1）
????????{
????????????printf（“Couldn‘t?find?a?video?stream.\n“）;
????????????retu

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2018-03-28?12:12??ffmpeg1\
?????目錄???????????0??2018-03-27?17:08??ffmpeg1\ffmpeg\
?????文件?????????462??2018-03-27?22:50??ffmpeg1\ffmpeg1.pro
?????文件???????23947??2018-03-27?21:18??ffmpeg1\ffmpeg1.pro.user
?????目錄???????????0??2018-03-27?17:07??ffmpeg1\ffmpeg\bin\
?????文件????19646464??2014-12-31?06:21??ffmpeg1\ffmpeg\bin\avcodec-56.dll
?????文件?????1367552??2014-12-31?06:21??ffmpeg1\ffmpeg\bin\avdevice-56.dll
?????文件?????2314752??2014-12-31?06:21??ffmpeg1\ffmpeg\bin\avfilter-5.dll
?????文件?????5839360??2014-12-31?06:21??ffmpeg1\ffmpeg\bin\avformat-56.dll
?????文件??????452096??2014-12-31?06:21??ffmpeg1\ffmpeg\bin\avutil-54.dll
?????文件??????324608??2014-12-31?06:21??ffmpeg1\ffmpeg\bin\ffmpeg.exe
?????文件??????475136??2014-12-31?06:21??ffmpeg1\ffmpeg\bin\ffplay.exe
?????文件??????152576??2014-12-31?06:21??ffmpeg1\ffmpeg\bin\ffprobe.exe
?????文件??????121344??2014-12-31?06:21??ffmpeg1\ffmpeg\bin\postproc-53.dll
?????文件??????270336??2014-12-31?06:21??ffmpeg1\ffmpeg\bin\swresample-1.dll
?????文件??????446976??2014-12-31?06:21??ffmpeg1\ffmpeg\bin\swscale-3.dll
?????目錄???????????0??2018-03-27?17:07??ffmpeg1\ffmpeg\include\
?????目錄???????????0??2018-03-27?17:07??ffmpeg1\ffmpeg\include\libavcodec\
?????文件??????179819??2014-12-31?06:21??ffmpeg1\ffmpeg\include\libavcodec\avcodec.h
?????文件????????3111??2014-12-31?06:21??ffmpeg1\ffmpeg\include\libavcodec\avfft.h
?????文件????????3764??2014-12-31?06:21??ffmpeg1\ffmpeg\include\libavcodec\dv_profile.h
?????文件????????2358??2014-12-31?06:21??ffmpeg1\ffmpeg\include\libavcodec\dxva2.h
?????文件???????10623??2014-12-31?06:21??ffmpeg1\ffmpeg\include\libavcodec\old_codec_ids.h
?????文件????????4007??2014-12-31?06:21??ffmpeg1\ffmpeg\include\libavcodec\vaapi.h
?????文件????????5437??2014-12-31?06:21??ffmpeg1\ffmpeg\include\libavcodec\vda.h
?????文件????????7094??2014-12-31?06:21??ffmpeg1\ffmpeg\include\libavcodec\vdpau.h
?????文件????????6340??2014-12-31?06:21??ffmpeg1\ffmpeg\include\libavcodec\version.h
?????文件????????2317??2014-12-31?06:21??ffmpeg1\ffmpeg\include\libavcodec\vorbis_parser.h
?????文件????????6062??2014-12-31?06:21??ffmpeg1\ffmpeg\include\libavcodec\xvmc.h
?????目錄???????????0??2018-03-27?17:07??ffmpeg1\ffmpeg\include\libavdevice\
?????文件???????16642??2014-12-31?06:21??ffmpeg1\ffmpeg\include\libavdevice\avdevice.h
............此處省略112個文件信息