ffmpeg显示视频信息

方式1：通过命令获取

ffprobe ../input.mp4

方式2：代码获取

main.c

#include "libavutil/log.h"
#include "libavformat/avformat.h"

int main(int argc,char **argv){
    av_log_set_level(AV_LOG_DEBUG);
    if(argc <2){
        av_log(NULL,AV_LOG_ERROR,"Usage:%s inputFile",argv[0]);
    }
    const char *inputFile = argv[1];
    AVFormatContext *fCtx = NULL;

    int ret = avformat_open_input(&fCtx,inputFile,NULL,NULL);
    if (ret!=0){
        av_log(NULL,AV_LOG_ERROR,"open input file:%s failed:%s\n",inputFile,av_err2str(ret));
    }
    av_dump_format(fCtx,0,inputFile,0);
    avformat_close_input(&fCtx);
    return 0;
}

Makefile

TARGET=main
SRC=main.c
cc=gcc
CFLAGS=-I /usr/local/ffmpeg/include
LDFLAGS=-L /usr/local/ffmpeg/lib
LDFLAGS+= -lavutil -lavformat
all:$(TARGET)
$(TARGET):$(SRC)
	$(CC) $(SRC) $(CFLAGS) $(LDFLAGS) -o $(TARGET)
clean:
	rm -rf $(TARGET)

编译运行

make && ./main ../input.mp4