FFmpeg是一套可以用来记录、转换数字音频、视频，并能将其转化为流的开源计算机程序。采用LGPL或GPL许可证。它提供了录制、转换以及流化音视频的完整解决方案。
它包含了非常先进的音频/视频编解码库libavcodec，为了保证高可移植性和编解码质量，libavcodec里很多code都是从头开发的。
FFmpeg在Linux平台下开发，但它同样也可以在其它操作系统环境中编译运行，包括Windows、Mac OS X等。
这个项目最早由Fabrice Bellard发起，2004年至2015年间由Michael Niedermayer主要负责维护。许多FFmpeg的开发人员都来自MPlayer项目，而且当前FFmpeg也是放在MPlayer项目组的服务器上。
项目的名称来自MPEG视频编码标准，前面的"FF"代表"Fast Forward"。
多媒体视频处理工具FFmpeg有非常强大的功能包括视频采集功能、视频格式转换、视频抓图、给视频加水印等。

# -!- coding: utf-8 -!-
'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
#作者：cacho_37967865
#博客：https://blog.csdn.net/sinat_37967865
#文件：ffmpegModel.py
#日期：2019-06-12
#备注：通过ffmpeg库处理视频信息   pip install ffmpeg-python ，在这之前还需要安装windows版本FFmpeghttps://ffmpeg.zeranoe.com/builds/
'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''import ffmpegdef getInfo(file):info = ffmpeg.probe(file)dict_to_json(info)if __name__ == '__main__':#getInfo('F:\image\\temp\\d.mp4')

{"format":{"bit_rate":"1634932","duration":"334.067000","filename":"F:\\image\\d-min.mp4","format_long_name":"QuickTime / MOV","format_name":"mov,mp4,m4a,3gp,3g2,mj2","nb_programs":0,"nb_streams":2,"probe_score":100,"size":"68272120","start_time":"0.000000","tags":{"compatible_brands":"isomiso2avc1mp41","encoder":"Lavf58.20.100","major_brand":"isom","minor_version":"512"}},"streams":[{"avg_frame_rate":"30/1","bit_rate":"1497468","bits_per_raw_sample":"8","chroma_location":"left","codec_long_name":"H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10","codec_name":"h264","codec_tag":"0x31637661","codec_tag_string":"avc1","codec_time_base":"1/60","codec_type":"video","coded_height":1280,"coded_width":720,"disposition":{"attached_pic":0,"clean_effects":0,"comment":0,"default":1,"dub":0,"forced":0,"hearing_impaired":0,"karaoke":0,"lyrics":0,"original":0,"timed_thumbnails":0,"visual_impaired":0},"duration":"334.066667","duration_ts":5131264,"has_b_frames":2,"height":1280,"index":0,"is_avc":"true","level":31,"nal_length_size":"4","nb_frames":"10022","pix_fmt":"yuv420p","profile":"High","r_frame_rate":"30/1","refs":1,"start_pts":0,"start_time":"0.000000","tags":{"handler_name":"VideoHandler","language":"eng"},"time_base":"1/15360","width":720},{"avg_frame_rate":"0/0","bit_rate":"128807","bits_per_sample":0,"channel_layout":"stereo","channels":2,"codec_long_name":"AAC (Advanced Audio Coding)","codec_name":"aac","codec_tag":"0x6134706d","codec_tag_string":"mp4a","codec_time_base":"1/44100","codec_type":"audio","disposition":{"attached_pic":0,"clean_effects":0,"comment":0,"default":1,"dub":0,"forced":0,"hearing_impaired":0,"karaoke":0,"lyrics":0,"original":0,"timed_thumbnails":0,"visual_impaired":0},"duration":"334.029002","duration_ts":14730679,"index":1,"max_bit_rate":"128807","nb_frames":"14385","profile":"LC","r_frame_rate":"0/0","sample_fmt":"fltp","sample_rate":"44100","start_pts":0,"start_time":"0.000000","tags":{"handler_name":"SoundHandler","language":"eng"},"time_base":"1/44100"}]
}

ffmpeg.probe(mp3)结果中的streams参数介绍
"codec_type":"audio",                          -- 类型：audio-音频，video-视频
"codec_long_name":"MP3 (MPEG audio layer 3)"
"codec_name":"mp3",
"channel_layout":"stereo",                   -- 音频声道类型：stereo-双声道(立体声)；mono-单声道
"channels":2,                                       -- 音频声道数量
"sample_rate":"48000",                       -- 音频采样率 Hz 
"bit_rate":"128000",                             -- 音频数据流量

ffmpeg.probe(mp4)结果中的streams参数介绍
"codec_type":"video",
"codec_long_name":"H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10",
"codec_name":"h264",
"coded_height":1280,
"coded_width":720,
"avg_frame_rate":"30/1",         -- 平均帧率
"bit_rate":"1854254",               -- 平均码率（比特率）