command = ["E:\\Downloads\\ffmpeg.exe", "-i", f'"{mp4_path}"', "-q:a", "0", "-map", "a", f'"{mp3_path}"'] if os.name == 'nt': command = ' '.join(command) subprocess.run(command,shell=True) # 使用示例 directory = "F:\mp4" extract_audio_from_mp4(directory) ...
请看下列命令行:-map input_file_index:stream_type_specifier:stream_index.所以,你可以使用-map 1:a:2来选择第二个输入文件中的第三个音轨,因为计数从0开始。ffmpeg -i video_with_audio.mp4 -i newAudio.wav \-map 0:0 \-map 1:0 \-c:v copy \-c:a libmp3lame -q:a 1 \-shortest \ video...
* @param string $videoPath * @param array $audioPathList * @return array */ publicfunctionextractVideo(string$videoPath,array&$audioPathList) { $today=date("Y-m-d"); /** @var $dir string 创建临时工作目录 */ $dir=public_path('temp').DIRECTORY_SEPARATOR.$today; if(!is_dir($dir))...
ExtractAudioService audioService = new ExtractAudioService(); String outPath = audioService.getAudioFromVideo("G:\\Youku Files\\transcode\\化学高中必修1__第2章第3节·氧化还原反应_标清.mp4", "D:\\ffmpeg4.2\\bin\\ffmpeg.exe"); List<String> audios = new CutService().cutFile(outPath,"D...
* extract audio from media file * * copyright lichao 2020.4.10 */ #include <stdio.h> #include <libavutil/log.h> #include <libavformat/avio.h> #include <libavformat/avformat.h> #define ADTS_HEADER_LEN 7; static int get_audio_obj_type(int aactype) ...
Pa 示例: extract.exe test.mp4 out.aac
Bonus: Add, Extract, Replace - OTTVerse ffmpeg -i videoWithAudio.mp4(flv) -vn -c:a libmp3lame -q:a 0 onlyAudio.mp3 -q:a表示质量(在LAME文档中定义),质量分布范围为0~6,其中0表示高质量音频,6表示低质量音频。 补充:FFmpeg—应用程序中强大的视频音频助手 (baidu.com)...
audio_op.h #ifndef_AUDIO_OP_H_#define_AUDIO_OP_H_#include"common_header.h"#include<string>structAudioOp{AudioOp();~AudioOp();voidextract_audio(conststd::string&src_video,conststd::string&dst_audio,AUDIO_OP_ERRORS&err);private:voidadts_header(char*szAdtsHeader,intdataLen);};#endif ...
Learn how to remove an audio track from a video, select what streams a video file should have or extract the audio from a video← All how-tos FFMPEG course Introduction What FFMPEG is? Install FFMPEG FFMPEG wrappers Video containers and codecs Mapping streams How to add audio to ...
("Ffmpeg::extractAudio::[ERROR]拷贝编码失败\n"); return false; } out_stream->codecpar->codec_tag = 0; break; // 拿到音频流就可以直接退出循环,这里我们只需要音频流 } } av_dump_format(pFormatCtx_out, 0, szFilename, 1); // 解复用器,如果没有指定就使用pb if (!(pFormatCtx->flags...