ffmpeg -y -i music.mp4 -vcodec copy -acodec copy -vbsf h264_mp4toannexb out\music.ts # 2. ts 文件切片 ffmpeg -i music.ts -c copy -map 0 -f segment -segment_list out\music.m3u8 -segment_time 10 out\15s_%3d.ts -c copy WILL copy all the streams。表明要**拷贝所有的流**。
in_stream = fmt_ctx->streams[1]; //aac参数信息 AVCodecParameters *in_codecpar = in_stream->codecpar; //找到最好的音频流 audio_stream_index = av_find_best_stream(fmt_ctx, AVMEDIA_TYPE_AUDIO, -1, -1, NULL, 0); if(audio_stream_index < 0) { av_log(NULL, AV_LOG_DEBUG, "寻找...
ffmepg.c 文件中添加获取音视频流的基本信息的接口 // 封装:查找解码器// type:[0:video, 1:audio]void get_decoder_name(AVGeneralMediaInfo *avmi, AVFormatContext *avFmtctx, int type){int nindex = -1;if (type == 0) { // videonindex = avmi->videoStreamIndex;}else if (type == 1) {...
[music_error]Can't find audiostream" <<endl; return -1; } //3.Find and open the audio decoder Codec type or id mismatches l_pstAStream= l_pstFormatCtx->streams[l_s32AStreamSubscript]; l_pstACodec = avcodec_find_decoder(l_pstAStream->codecpar->codec_id); l_pstACodecCtx = ...
int stream_index = av_find_best_stream(avFormatContext, AVMEDIA_TYPE_AUDIO, -1, -1, NULL, 0); if (stream_index == -1) { // 标识没有音频流; } AVStream *audioStream = avFormatContext->streams[stream_index]; if (audioStream->time_base.den && audioStream->time_base.num) { ...
("audio_stream_index=[%d]\n",audio_stream_index);in_stream=fmt_ctx->streams[audio_stream_index];in_codecpar=(void*)(in_stream->codec);//输出上下文ofmt_ctx=avformat_alloc_context();//根据目标文件名生成最适合的输出容器output_fmt=av_guess_format(NULL,dst_filename,NULL);if(!output_fmt...
{if(fmt_ctx->streams[i]->codec->codec_type ==AVMEDIA_TYPE_AUDIO) { audio_index=i;break; } } printf("Audio Stream Index = %d", audio_index);//检查发现音频流的结果if(audio_index <0) { av_log(NULL, AV_LOG_ERROR,"Can't find Best Audio Stream!\n");//printf("Reason = %s",...
ffmpeg -f dshow -i audio="麦克风 (HD Webcam C310)" -ar 16000 -ac 1 lib.wav 1. 2. 3. 4. 视频生成图片 ::1秒输出一张图片,从26秒开始,持续7秒 ::ffmpeg -i toolba.mkv -r 1 -ss 00:00:26 -t 00:00:07 %03d.png @echo off ...
if(audio_stream_index <0){ //av_log(NULL, AV_LOG_DEBUG, "寻找最好音频流失败,请检查输入文件!\n"); returnAVERROR(EINVAL); } // //拿到文件中音频流 或者 视频流,所有流都在streams数组中 // in_stream = fmt_ctx->streams[1];
pAVFormatContext->streams[audioIndex]->codecpar) <0) { printf("Failed to copy codec parameters to decoder context!\n");gotoEND; }#endif// 步骤六:打开解码器ret = avcodec_open2(pAVCodecContext, pAVCodec,NULL);if(ret) { LOG <<"Failed to avcodec_open2(pAVCodecContext, pAVCodec, pAVDictio...