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C语言实现为无声avi视频添加wave音乐

作者:乐山劲松

这篇文章主要为大家详细介绍了C语言如何实现为无声avi视频添加wave音乐,文中的示例代码讲解详细,具有一定的参考价值,感兴趣的小伙伴可以了解一下

编程中发现,头文件结构中很多参数要求很不严格,只有少数几个很重要,

其实,这个程序就是为后期的用摄像头录像,麦克风录音作准备的,此程序用的音频我就是用麦克风录制的。

现在此程序生成的avi 可以被deepin的 自带视频播放软件播放了。

我理解,单位时间内,视频和音频交叉的数据的播放时间要相等。单位内音频和视频可以多次交叉,也可交叉一次。

每一段交叉的音频视频数据前必须要要加数据类型标识xxdc,xxwb和数据长度。告诉播放器下面的数据是什麽类型,有多长。

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <malloc.h>
#include <wait.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <sys/mman.h>
static int ap;
static int at;
static int nframe = 0;
static unsigned int vzj = 0;
static unsigned int azj = 0;
//下面7个参数必须要先定义
#define zwidth  720
#define zheigth  496
#define zvrate  30   //video 帧率
#define channal  2   //audio 频道数
#define zarate   44100   //audio 采样率
#define bitper   16     //audio 采样宽度
#define vbitper  24      //video 采样宽度
int main(void) {
	struct file {
		struct riff {
			char id[4];
			unsigned int size;
			char type[4];
			struct hdrl {
				char id[4];
				unsigned int size;
				unsigned char type[4];
				struct avih {
					unsigned char id[4];            //块ID,固定为avih
					unsigned int size;              //块大小,等于struct avi_avih_chunk去掉id和size的大小
					unsigned int us_per_frame;      //视频帧间隔时间(以微秒为单位)
					unsigned int max_bytes_per_sec; //AVI文件的最大数据率
					unsigned int padding;           //设为0即可
					unsigned int flags;             //AVI文件全局属性,如是否含有索引块、音视频数据是否交叉存储等
					unsigned int total_frames;      //总帧数
					unsigned int init_frames;       //为交互格式指定初始帧数(非交互格式应该指定为0)
					unsigned int streams;           //文件包含的流的个数,仅有视频流时为1
					unsigned int suggest_buff_size; //指定读取本文件建议使用的缓冲区大小,通常为存储一桢图像
					unsigned int width;             //视频主窗口宽度(单位:像素)
					unsigned int height;            //视频主窗口高度(单位:像素)
					unsigned int reserved[4];       //保留段,设为0即可
				} av;
					struct strl {
					unsigned char id[4];    //块ID,固定为LIST
					unsigned int size;      //块大小,等于struct avi_strl_list去掉id和size的大小
					unsigned char type[4];  //strl
					struct strh1 {
						unsigned char id[4];            //块ID,固定为strh
						unsigned int size;              //块大小,等于struct avi_strh_chunk去掉id和size的大小
						unsigned char stream_type[4];   //流的类型,vids表示视频流,auds表示音频流
						unsigned char codec[4];         //指定处理这个流需要的解码器,如JPEG
						unsigned int flags;             //标记,如是否允许这个流输出、调色板是否变化等,一般设为0即可
						unsigned short priority;        //流的优先级,视频流设为0即可
						unsigned short language;        //音频语言代号,视频流设为0即可
						unsigned int init_frames;       //为交互格式指定初始帧数(非交互格式应该指定为0)
						unsigned int scale;             //
						unsigned int rate;              //对于视频流,rate / scale = 帧率fps
						unsigned int start;             //对于视频流,设为0即可
						unsigned int length;            //对于视频流,length即总帧数
						unsigned int suggest_buff_size; //读取这个流数据建议使用的缓冲区大小
						unsigned int quality;           //流数据的质量指标
						unsigned int sample_size;       //音频采样大小,视频流设为0即可
						short left;                  //这个流在视频主窗口中的显示位置,设为{0,0,width,height}即可
						short top;
						short right;
						short bottom;
					} sh1;
					struct strf1 {
						unsigned char id[4];             //块ID,固定为strf
						unsigned int size;               //块大小,等于struct avi_strf_chunk去掉id和size的大小
						//_BITMAPINFOHEADER 结构
						int       size1;                 //  指定结构所需的字节数。=size
						unsigned int width;              //指定位图的宽度(以像素为单位)。
						unsigned int height;             //指定位图的高度(以像素为单位)
						unsigned short planes;           //指定目标设备的平面数。 此值必须设置为 1。
						unsigned short bitcount;         //每个像素占的位数,只能是1、4、8、16、24和32中的一个
						unsigned char compression[4];    //指定压缩的自下而上位图的压缩类型
						unsigned int image_size;         //指定图像的大小(以字节为单位),等于width * height * bitcount / 8
						unsigned int x_pixels_per_meter; //显示设备的水平分辨率,设为0即可
						unsigned int y_pixels_per_meter; //显示设备的垂直分辨率,设为0即可
						unsigned int num_colors;         //含义不清楚,设为0即可
						unsigned int imp_colors;         //含义不清楚,设为0即可
					} sf1;
				} sl1;
				struct strl2 {
					unsigned char id[4];    //块ID,固定为LIST
					unsigned int size;      //块大小,等于struct avi_strl_list去掉id和size的大小
					unsigned char type[4];  //strl
					struct  strh2 {
						unsigned char id[4];            //块ID,固定为strh
						unsigned int size;              //块大小,等于struct avi_strh_chunk去掉id和size的大小
						unsigned char stream_type[4];   //流的类型,vids表示视频流,auds表示音频流
						unsigned char codec[4];         //指定处理这个流需要的解码器,如JPEG
						unsigned int flags;             //标记,如是否允许这个流输出、调色板是否变化等,一般设为0即可
						unsigned short priority;        //流的优先级,视频流设为0即可
						unsigned short language;        //音频语言代号,视频流设为0即可
						unsigned int init_frames;       //为交互格式指定初始帧数(非交互格式应该指定为0)
						unsigned int scale;             //
						unsigned int rate;              //对于视频流,rate / scale = 帧率fps
						unsigned int start;             //对于视频流,设为0即可
						unsigned int length;            //对于视频流,length即总帧数
						unsigned int suggest_buff_size; //读取这个流数据建议使用的缓冲区大小
						unsigned int quality;           //流数据的质量指标
						unsigned int sample_size;       //音频采样大小,视频流设为0即可
						short left;                  //这个流在视频主窗口中的显示位置,设为{0,0,width,height}即可
						short top;
						short right;
						short bottom;
					} sh2;
					struct  strf2 {
						char id[4];        //strf
						int size;
						short wFormatTag;       //波形音频格式类型,格式标记在 Microsoft Corporation 中注册,用于许多压缩算法,
						short nChannels;        //声道数                                                    85= WAVE_FORMAT_PCM
						int nSamplesPerSec;  //采样率,以每秒样本数 (赫) ,常见值为 8.0 kHz、11.025 kHz、22.05 kHz 和 44.1 kHz
						int nAvgBytesPerSec; //格式标记所需的平均数据传输速率(以字节/秒为单位)=nsam*nblock
						short nBlockAlign;      //阻止对齐(以字节为单位),nBlockAlign 必须等于 nChannels 和 wBitsPerSample 的乘积除以 8 (位/字节)
						short  wBitsPerSample;// 如果 wFormatTag WAVE_FORMAT_PCM,则 wBitsPerSample 应等于 8 或 16
						short biSize;           //追加到 WAVEFORMATEX 结构末尾的额外格式信息的大小(以字节为单位)
					} sf2;
				} sl2;
			} hd;
			struct movi {
				char id[4];
				unsigned int size;
				char type[4];
			} mo;
		} ri;
	} head;
	FILE *fo = fopen("/home/wjs/Videos/demo.avi", "w+b");  //生成avi
	FILE *f = fopen("/home/wjs/Videos/tra_mjpg.avi", "r+b"); //无声视频文件
	FILE *af = fopen("/home/wjs/Music/15s.wav", "r+b");   //wav 文件
	fseek(fo, sizeof(head), SEEK_SET);
	if (f == NULL) {
		puts("file_in error");
		exit(-1);
	}
	if (af == NULL) {
		puts("file2_in error");
		exit(-1);
	}
	fseek(f, 0, SEEK_END);
	int flen = ftell(f);
	fseek(f, 0, SEEK_SET);
	fseek(af, 0, SEEK_END);
	int aflen = ftell(af);
	fseek(af, 0, SEEK_SET);
	int tf = fileno(f);
	int taf = fileno(af);
	char *mf = mmap(NULL, flen, PROT_READ | PROT_WRITE, MAP_SHARED, tf, 0);
	char *maf = mmap(NULL, aflen, PROT_READ | PROT_WRITE, MAP_SHARED, taf, 0);
	for (int a = 0; a < aflen; a++) {
		if ((maf[a] == 'd') && (maf[a + 1] == 'a') && (maf[a + 2] == 't') && (maf[a + 3] == 'a')) {
			ap = a + 4 + 4;
			at = ap;
		}
	}
	int t = 0;
	while (t < flen) {
		int n = 0;
		while ((n <zvrate) && (t < flen)) {
			if ((mf[t] == '0') && (mf[t + 1] == '0') && (mf[t + 2] == 'd') && (mf[t + 3]) == 'c') {
				char c00dc[] = {'0', '0', 'd', 'c'};
				fwrite(c00dc, 4, 1, fo);
				fwrite(&mf[t + 4], 4, 1, fo);         //写长度
				int dx = 0;
				memcpy(&dx, &mf[t + 4], 4);
				fwrite(&mf[t + 8], dx, 1, fo);  //写数据
				vzj = vzj + 8 + dx;
				n++;
				t++;
				nframe++;
			} else {
				t++;
			}
		}
//------------------------ 以一秒为单位,视频,音频数据交叉一次------------------------------------------------
		char c01wb[] = {'0', '1', 'w', 'b'};
		fwrite(c01wb, 4, 1, fo);
	    int h=channal*zarate*bitper/8;
		fwrite(&h,4,1,fo);
		azj = azj + 8;
	   	fwrite(&maf[ap],h, 1, fo);      //写audio数据
		ap = ap +h;
		azj = azj +h;
	}
	//----------------------------------------------
	typedef struct file File;
	File   ffile = {
		{
			//riff
			{'R', 'I', 'F', 'F'},
			vzj + azj + 8,
			{'A', 'V', 'I', ' '},
			//hdrl
			{
				{'L', 'I', 'S', 'T'},
				sizeof(head.ri.hd) - 8,
				{'s', 't', 'r', 'l'},
				//avih
				{
					{'a', 'v', 'i', 'h'},
					sizeof(head.ri.hd.av) - 8,
					1000000/zvrate,
					zwidth*zheigth*vbitper*zvrate,
					0, 0, nframe,0, 
					2,                      //audio + video 流总数
					zwidth*zheigth*vbitper,
					zwidth,zheigth, {0, 0, 0, 0}
				},
				//strl1
				{
					{'L', 'I', 'S', 'T'},
					sizeof(head.ri.hd.sl1) - 8,
					{'s', 't', 'r', 'l'},
					{
						//strh1
						{'s', 't', 'r', 'h'},
						sizeof(head.ri.hd.sl1.sh1) - 8,
						{'v', 'i', 'd', 's'},          //代表视频
						{'M', 'J', 'P', 'G'},       //图像格式
						0, 0, 0, 0,
						1,zvrate,              
						0, nframe, 
						zwidth*zheigth*vbitper*zvrate,
						10000, 0,
						0, 0,zwidth,zheigth
					},
					{
						//strf1
						{'s', 't', 'r', 'f'},
						sizeof(head.ri.hd.sl1.sf1) - 8,
						sizeof(head.ri.hd.sl1.sf1) - 8,
						zwidth,zheigth, 1,
						vbitper,
						{'M', 'J', 'P', 'G'},           //图像格式
						zwidth*zheigth*vbitper/8,
						0, 0, 0, 0
					}
				},
				//strl2
				{
					{'L', 'I', 'S', 'T'},
					sizeof(head.ri.hd.sl2) - 8,
					{'s', 't', 'r', 'l'},
					{
						//strh2
						{'s', 't', 'r', 'h'},
						sizeof(head.ri.hd.sl2.sh2) - 8,
						{'a', 'u', 'd', 's'},           //代表声音
						{0, 0, 0, 0},
						0, 0, 0, 0,
						1,zarate,                    //这个帧率会影响图像的帧率
						0, 0,channal*zarate*bitper/8, 10000, zarate,
						0, 0, 0, 0
					},
					{
						//strf2
						{'s', 't', 'r', 'f'},
						sizeof(head.ri.hd.sl2.sf2) - 8,
						1,channal,zarate,zarate*channal*bitper/8,channal*bitper/8,bitper, 0
					}
				}
			},
			//movi
			{
				{'L', 'I', 'S', 'T'},
				//	movisize,
				vzj,
				{'m', 'o', 'v', 'i'}
			}
		}
	};
	fseek(fo, 0, SEEK_SET);
	fwrite(&ffile, sizeof(ffile), 1, fo);
	//-----------------------------------------
	fclose(fo);
	puts("over");
	return 0;
}

附 查看avi文件参数:

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <malloc.h>
#include <wait.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <sys/mman.h>
int main(void){
	struct file{
		struct riff{
			char id[4];
			unsigned int size;
			char type[4];
			struct hdrl{
				char id[4];
				unsigned int size;
				unsigned char type[4]; 
				struct avih{
					unsigned char id[4];            //块ID,固定为avih
					unsigned int size;              //块大小,等于struct avi_avih_chunk去掉id和size的大小
					unsigned int us_per_frame;      //视频帧间隔时间(以微秒为单位)
					unsigned int max_bytes_per_sec; //AVI文件的最大数据率
					unsigned int padding;           //设为0即可
					unsigned int flags;             //AVI文件全局属性,如是否含有索引块、音视频数据是否交叉存储等
					unsigned int total_frames;      //总帧数
					unsigned int init_frames;       //为交互格式指定初始帧数(非交互格式应该指定为0)
					unsigned int streams;           //文件包含的流的个数,仅有视频流时为1
					unsigned int suggest_buff_size; //指定读取本文件建议使用的缓冲区大小,通常为存储一桢图像                   
					unsigned int width;             //视频主窗口宽度(单位:像素)
					unsigned int height;            //视频主窗口高度(单位:像素)
					unsigned int reserved[4];       //保留段,设为0即可
				}av;
				struct strl{
					unsigned char id[4];    //块ID,固定为LIST
					unsigned int size;      //块大小,等于struct avi_strl_list去掉id和size的大小
					unsigned char type[4];  //strl
					struct strh1{
						unsigned char id[4];            //块ID,固定为strh
						unsigned int size;              //块大小,等于struct avi_strh_chunk去掉id和size的大小
						unsigned char stream_type[4];   //流的类型,vids表示视频流,auds表示音频流
						unsigned char codec[4];         //指定处理这个流需要的解码器,如JPEG
						unsigned int flags;             //标记,如是否允许这个流输出、调色板是否变化等,一般设为0即可
						unsigned short priority;        //流的优先级,视频流设为0即可
						unsigned short language;        //音频语言代号,视频流设为0即可
						unsigned int init_frames;       //为交互格式指定初始帧数(非交互格式应该指定为0)
						unsigned int scale;             //
						unsigned int rate;              //对于视频流,rate / scale = 帧率fps
						unsigned int start;             //对于视频流,设为0即可
						unsigned int length;            //对于视频流,length即总帧数
						unsigned int suggest_buff_size; //读取这个流数据建议使用的缓冲区大小
						unsigned int quality;           //流数据的质量指标
						unsigned int sample_size;       //音频采样大小,视频流设为0即可
						short left;                  //这个流在视频主窗口中的显示位置,设为{0,0,width,height}即可
						short top;
						short right;
						short bottom;
					}sh1;
					struct strf1{
						unsigned char id[4];             //块ID,固定为strf
						unsigned int size;               //块大小,等于struct avi_strf_chunk去掉id和size的大小
						//_BITMAPINFOHEADER 结构
						int       size1;                 //  指定结构所需的字节数。=size
						unsigned int width;              //指定位图的宽度(以像素为单位)。
						unsigned int height;             //指定位图的高度(以像素为单位)
						unsigned short planes;           //指定目标设备的平面数。 此值必须设置为 1。
						unsigned short bitcount;         //每个像素占的位数,只能是1、4、8、16、24和32中的一个
						unsigned char compression[4];    //指定压缩的自下而上位图的压缩类型 
						unsigned int image_size;         //指定图像的大小(以字节为单位),等于width * height * bitcount / 8
						unsigned int x_pixels_per_meter; //显示设备的水平分辨率,设为0即可
						unsigned int y_pixels_per_meter; //显示设备的垂直分辨率,设为0即可
						unsigned int num_colors;         //含义不清楚,设为0即可
						unsigned int imp_colors;         //含义不清楚,设为0即可
					}sf1;
				}sl1;
				struct strl2{
					unsigned char id[4];    //块ID,固定为LIST
					unsigned int size;      //块大小,等于struct avi_strl_list去掉id和size的大小
					unsigned char type[4];  //strl
					struct  strh2{
						unsigned char id[4];            //块ID,固定为strh
						unsigned int size;              //块大小,等于struct avi_strh_chunk去掉id和size的���小
						unsigned char stream_type[4];   //流的类型,vids表示视频流,auds表示音频流
						unsigned char codec[4];         //指定处理这个流需要的解码器,如JPEG
						unsigned int flags;             //标记,如是否允许这个流输出、调色板是否变化等,一般设为0即可
						unsigned short priority;        //流的优先级,视频流设为0即可
						unsigned short language;        //音频语言代号,视频流设为0即可
						unsigned int init_frames;       //为交互格式指定初始帧数(非交互格式应该指定为0)
						unsigned int scale;             //
						unsigned int rate;              //对于视频流,rate / scale = 帧率fps
						unsigned int start;             //对于视频流,设为0即可
						unsigned int length;            //对于视频流,length即总帧数
						unsigned int suggest_buff_size; //读取这个流数据建议使用的缓冲区大小
						unsigned int quality;           //流数据的质量指标
						unsigned int sample_size;       //音频采样大小,视频流设为0即可
						short left;                  //这个流在视频主窗口中的显示位置,设为{0,0,width,height}即可
						short top;
						short right;
						short bottom;
					}sh2;
					struct  strf2{
						char id[4];        //strf
						int size; 
						short wFormatTag;       //波形音频格式类型,格式标记在 Microsoft Corporation 中注册,用于许多压缩算法,
						short nChannels;        //声道数                                                    85= WAVE_FORMAT_PCM
						int nSamplesPerSec;  //采样率,以每秒样本数 (赫) ,常见值为 8.0 kHz、11.025 kHz、22.05 kHz 和 44.1 kHz
						int nAvgBytesPerSec; //格式标记所需的平均数据传输速率(以字节/秒为单位)=nsam*nblock
						short nBlockAlign;      //阻止对齐(以字节为单位),nBlockAlign 必须等于 nChannels 和 wBitsPerSample 的乘积除以 8 (位/字节)
						short  wBitsPerSample;// 如果 wFormatTag WAVE_FORMAT_PCM,则 wBitsPerSample 应等于 8 或 16
						short biSize;           //追加到 WAVEFORMATEX 结构末尾的额外格式信息的大小(以字节为单位)
					}sf2;
				}sl2;
			}hd;
			struct movi{
				char id[4];
				unsigned int size;
				char type[4]; 
			}mo;
		}ri;
	}head;
	FILE *f=fopen("/home/wzpc/Videos/2vuy.avi","rb");
	if(f==NULL){
		puts("file in error");
		exit(-1);
	}
	fseek(f,0,SEEK_END);
	int len=ftell(f);
	fseek(f,0,SEEK_SET);
	int fd=fileno(f);
	char *m=mmap(NULL,len,PROT_READ,MAP_SHARED,fd,0);
	memcpy(&head,&m[0],sizeof(head));
	//avih
	printf("-----------avih--------------\n");
	printf("avih_id:           %s\n",head.ri.hd.av.id);
	printf("size:              %d\n",head.ri.hd.av.size);
	printf("us_per_frame:      %d\n",head.ri.hd.av.us_per_frame);
	printf("max_bytes_per_sec: %d\n",head.ri.hd.av.max_bytes_per_sec);
	printf("paddind:           %d\n",head.ri.hd.av.padding);
	printf("flags:             %d\n",head.ri.hd.av.flags);
	printf("total_frames:      %d\n",head.ri.hd.av.total_frames);
	printf("init_frame:        %d\n",head.ri.hd.av.init_frames);
	printf("stream:            %d\n",head.ri.hd.av.streams);
	printf("suggest_buff_size: %d\n",head.ri.hd.av.suggest_buff_size);
	printf("width:             %d\n",head.ri.hd.av.width);
	printf("height:            %d\n",head.ri.hd.av.height);
	//strh
	printf("-----------video strh--------------\n");
	printf("strh_id:            %s\n",head.ri.hd.sl1.sh1.id);
	printf("size:               %d\n",head.ri.hd.sl1.sh1.size);
	printf("stream_type:        %s\n",head.ri.hd.sl1.sh1.stream_type);
	printf("codes:              %s\n",head.ri.hd.sl1.sh1.codec);
	printf("flags:              %d\n",head.ri.hd.sl1.sh1.flags);
	printf("priority:           %d\n",head.ri.hd.sl1.sh1.priority);
	printf("language:           %d\n",head.ri.hd.sl1.sh1.language);
	printf("init_frame:         %d\n",head.ri.hd.sl1.sh1.init_frames);
	printf("scale:              %d\n",head.ri.hd.sl1.sh1.scale);
	printf("rate:               %d\n",head.ri.hd.sl1.sh1.rate);
	printf("start:              %d\n",head.ri.hd.sl1.sh1.start);
	printf("length:             %d\n",head.ri.hd.sl1.sh1.length);
	printf("suggest_buff_size:  %d\n",head.ri.hd.sl1.sh1.suggest_buff_size);
	printf("quality:            %d\n",head.ri.hd.sl1.sh1.quality);
	printf("sample_size:        %d\n",head.ri.hd.sl1.sh1.sample_size);
	printf("-----------audio strh--------------\n");
	printf("ausio strh_id:      %s\n",head.ri.hd.sl2.sh2.id);
	printf("size:               %d\n",head.ri.hd.sl2.sh2.size);
	printf("stream_type:        %s\n",head.ri.hd.sl2.sh2.stream_type);
	printf("codes:              %s\n",head.ri.hd.sl2.sh2.codec);
	printf("flags:              %d\n",head.ri.hd.sl2.sh2.flags);
	printf("priority:           %d\n",head.ri.hd.sl2.sh2.priority);
	printf("language:           %d\n",head.ri.hd.sl2.sh2.language);
	printf("init_frame:         %d\n",head.ri.hd.sl2.sh2.init_frames);
	printf("scale:              %d\n",head.ri.hd.sl2.sh2.scale);
	printf("rate:               %d\n",head.ri.hd.sl2.sh2.rate);
	printf("start:              %d\n",head.ri.hd.sl2.sh2.start);
	printf("length:             %d\n",head.ri.hd.sl2.sh2.length);
	printf("suggest_buff_size:  %d\n",head.ri.hd.sl2.sh2.suggest_buff_size);
	printf("quality:            %d\n",head.ri.hd.sl2.sh2.quality);
	printf("sample_size:        %d\n",head.ri.hd.sl2.sh2.sample_size);
	printf("-----------audio strf--------------\n");
	printf("audio strf:id       %s\n",head.ri.hd.sl2.sf2.id);
	printf("size:               %d\n",head.ri.hd.sl2.sf2.size);
	printf("波型格式  :         %d\n",head.ri.hd.sl2.sf2.wFormatTag);
	printf("nChannls:           %d\n",head.ri.hd.sl2.sf2.nChannels);
	printf("采样率        :     %d\n",head.ri.hd.sl2.sf2.nSamplesPerSec);
	printf("平均数率:           %d\n",head.ri.hd.sl2.sf2.nAvgBytesPerSec);
	printf("nMlockAlign:        %d\n",head.ri.hd.sl2.sf2.nBlockAlign);
	printf("采样位宽:           %d\n",head.ri.hd.sl2.sf2.wBitsPerSample);
	printf("biSize:             %d\n",head.ri.hd.sl2.sf2.biSize);
	return 0;
}

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