执行ffmpeg -help后，在终端会打印下面的帮助信息：ffmpeg version 3.4.2-1~16.04.york0 Copyright ...
-vn disable video -vcodec codec force video codec ('copy' to copy stream) -timecode hh:mm:ss[:;.]ff set initial TimeCode value. -pass n select the pass number (1 to 3) -vf filter_graph set video filters -ab bitrate audio bitrate (please use -b:a) -b bitrate video bitrate (pl...
ffmpeg是一个非常强大的工具,它可以转换任何格式的媒体文件,并且还可以用自己的AudioFilter以及VideoFilter进行处理和编辑。有了它,我们就可以对媒体文件做很多我们想做的事情了。 二、命令行参数 1. 通用参数 -f fmt : 指定格式 -i filename:指定输入文件名 -y:覆盖已有文件 -t duration:指定时长 -fs limit_...
def extract_audio(video_path, audio_path): """从视频中提取音频""" try: video = VideoFileClip(video_path) video.audio.write_audiofile(audio_path) video.close() except Exception as e: print(f"音频提取错误: {str(e)}") raise def generate_srt(segments, output_srt): """生成SRT格式字幕...
extract.export(output_file, format="wav") os.remove(temp_audio) # Read audio file data, samplerate = sf.read(input_video) # Calculate start and end samples start_sample = int(start_ms * samplerate / 1000) end_sample = int(end_ms * samplerate / 1000) # Extract audio segment extract...
And you’re done. For example, you could convert an MP3 into a WAV file, or an MKV video into MP4 (but don’t do that just yet, please). You could also just extract audio from a video file. ffmpeg -iaudio.mp3audio.wavffmpeg -ivideo.mp4video.mkvffmpeg -ivideo.mp4audio.wav ...
$video ->filters() ->extractMultipleFrames(FFMpeg\Filters\Video\ExtractMultipleFramesFilter::FRAMERATE_EVERY_10SEC, '/path/to/destination/folder/') ->synchronize(); $video ->save(new FFMpeg\Format\Video\X264(), '/path/to/new/file'); ...
提取音频:ffmpeg -i v.f802185.mp4 -vn -f s16le -ac 1 -ar 16000 extract.pcm (不需要指定编码,且指定编码acodec格式如果和输出格式不一致会报错) 提取视频和音频:ffmpeg -i video_compressed.mp4 -map 0 -c:v copy -an output_video.mp4 -map 0:a -f s16le -ac 1 -ar 16000 output_audio.pcm...
2. FFmpeg源码下载FFmpeg源码下载肯定是优先去官网下载: 官网 ffmpeg.org/download.ht…打开官网如下: 可以选择直接下载,或者git命令直接克隆一份,作为开发人员一般都喜欢选择git克隆的方式,这样方便后续更新…
(WeaveContext, x) #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM static const AVOption weave_options[] = { { "first_field", "set first field", OFFSET(first_field), AV_OPT_TYPE_INT, {.i64=0}, 0, 1, FLAGS, "field"}, { "top", "set top field first", 0...