output_file='audio.wav'# 创建一个`ffmpeg.output()`对象,指定输出文件路径和参数output=ffmpeg.output(input,output_file,output_params)# 运行音频提取操作ffmpeg.run(output) 1. 2. 3. 4. 5. 6. 7. 上述代码中,output_file变量指定了输出音频文件的路径。我们使用ffmpeg.output()创建了一个FFmpeg输出对象...
Remove all audio streams from a video file with map In this example, I only keep the video streams, dismissing any other tracks (audio tracks, subtitles, data, etc). The final result is exactly the same the example above. ffmpeg \ -i video1.mp4 \ -map 0:v \ -c copy \ -y output...
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...
@echo off ::编码切换为utf-8 chcp 65001 ::遍历拖入的文件路径 for %%i in (%*) do ( echo %%i call :getAudioFromVideo %%i ) pause ::从文件路径中提取文件名(不含拓展名) :getFileName set %~2=%~n1 goto :eof ::提取音频源,重命名为原文件名 :getAudioFromVideo SETLOCAL call :getFileName...
MediaMuxer类主要用于将音频和视频数据进行混合生成多媒体文件（如：mp4文件），而MediaExtractor则刚好相反...
audio_decode_thread(void *arg) { player_stat_t *is = (player_stat_t *)arg; AVFrame *p_frame = av_frame_alloc(); frame_t *af; int got_frame = 0; AVRational tb; int ret = 0; if (p_frame == NULL) { return AVERROR(ENOMEM); } while (1) { got_frame = audio_decode_...
Input #0, flv, from 'cctv1.flv': Metadata: encoder : Lavf58.20.100 Duration: 00:00:23.69, start: 0.000000, bitrate: 1793 kb/s Stream #0:0: Audio: mp3, 48000 Hz, stereo, fltp, 128 kb/s Stream #0:1: Video: flv1, yuv420p, 1920x1080, 200 kb/s, 25 fps, 25 tbr, 1k tbn...
3, 从视频中分离 video, audio 片断 仅仅要音频 ffmpeg -i src.mp4 -ss 00:00:10 -t 00:00:5 -vn -acodec copy dst.mp4 ( -vn 表示 "video no" , -ss 00:00:10 -t 00:00:5 表示開始时间为10秒,长度5秒) 仅仅要视频 ffmpeg -i src.mp4 -ss 00:00:10 -t 00:00:5 -an -vcodec ...
FFmpegis a cross-platform solution to record, convert and edit audio and video. It is a command line tool to convert one video file format to another. However, you could also find a FFmpeg GUI for user-friendly video editing. In this article, we will show you how to use FFmpeg for da...
enum{AV_SYNC_AUDIO_MASTER,/* default choice */AV_SYNC_VIDEO_MASTER,AV_SYNC_EXTERNAL_CLOCK,/* synchronize to an external clock */}; 2.4.1 time_base time_base是PTS和DTS的时间单位,也称时间基。 不同的封装格式time_base不一样,转码过程中的不同阶段time_base也不一样。