背景
需要获取视频基础信息，如果分辨率、大小、播放时长等，研究发现ffprobe工具已经提供了非常全面的视频信息，用ffprobe分析视频很简单，且看我是怎么在python码中调用ffprobe来提取视频信息的
ffprobe 命令
我们先来看下ffprobe命令分析网络视频
ffprobe -print_format json -show_format -show_streams -v quiet https://1252524126.vod2.myqcloud.com/9764a7a5vodtransgzp1252524126/4e89d74d5285890792243257460/drm/voddrm.token.YTY4YThkNGE4ZDQ4NmVkNXRGWWRTTk1kMmwrUkF3VHZ6YUduS3diR1ZTRzlSZVJzSnVsajFBQ0VWREZtQ3VMbA.v.f230.m3u8?time=1592902124084
输出结果：
{ "streams": [ { "index": 0, "codec_name": "h264", "codec_long_name": "H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10", "profile": "High", "codec_type": "video", "codec_time_base": "1/48", "codec_tag_string": "[27][0][0][0]", "codec_tag": "0x001b", "width": 1280, "height": 720, "coded_width": 1280, "coded_height": 720, "has_b_frames": 2, "sample_aspect_ratio": "1:1", "display_aspect_ratio": "16:9", "pix_fmt": "yuv420p", "level": 31, "chroma_location": "left", "refs": 1, "is_avc": "false", "nal_length_size": "0", "r_frame_rate": "24/1", "avg_frame_rate": "24/1", "time_base": "1/90000", "start_pts": 7500, "start_time": "0.083333", "bits_per_raw_sample": "8", "disposition": { "default": 0, "dub": 0, "original": 0, "comment": 0, "lyrics": 0, "karaoke": 0, "forced": 0, "hearing_impaired": 0, "visual_impaired": 0, "clean_effects": 0, "attached_pic": 0, "timed_thumbnails": 0 }, "tags": { "variant_bitrate": "0" } }, { "index": 1, "codec_name": "aac", "codec_long_name": "AAC (Advanced Audio Coding)", "profile": "LC", "codec_type": "audio", "codec_time_base": "1/44100", "codec_tag_string": "[15][0][0][0]", "codec_tag": "0x000f", "sample_fmt": "fltp", "sample_rate": "44100", "channels": 2, "channel_layout": "stereo", "bits_per_sample": 0, "r_frame_rate": "0/0", "avg_frame_rate": "0/0", "time_base": "1/90000", "start_pts": 3320, "start_time": "0.036889", "disposition": { "default": 0, "dub": 0, "original": 0, "comment": 0, "lyrics": 0, "karaoke": 0, "forced": 0, "hearing_impaired": 0, "visual_impaired": 0, "clean_effects": 0, "attached_pic": 0, "timed_thumbnails": 0 }, "tags": { "variant_bitrate": "0" } } ], "format": { "filename": "https://1252524126.vod2.myqcloud.com/9764a7a5vodtransgzp1252524126/4e89d74d5285890792243257460/drm/voddrm.token.YTY4YThkNGE4ZDQ4NmVkNXRGWWRTTk1kMmwrUkF3VHZ6YUduS3diR1ZTRzlSZVJzSnVsNXRGWWRTTk1kMmwrUkF3VHZ6YUduSdiR1ZTRzlSZVJzSnVsajFBQ0VWREZtQ3VMbA.v.f230.m3u8?time=1592902124084", "nb_streams": 2, "nb_programs": 1, "format_name": "hls", "format_long_name": "Apple HTTP Live Streaming", "start_time": "0.036889", "duration": "225.005000", "size": "14608", "bit_rate": "519", "probe_score": 100 }}
这里面已经可以提取到视频的基本信息了，我们只需要通过python调用ffprobe命令就可以了python调用ffprobe获取视频信息
import subprocess,jsonclass FFprobe(): def __init__(self): self.filepath = '' self._video_info = {} def parse(self,filepath): self.filepath = filepath try: res = subprocess.check_output(['ffprobe','-i',self.filepath,'-print_format','json','-show_format','-show_streams','-v','quiet']) res = res.decode('utf8') self._video_info = json.loads(res) # print('_video_info ',self._video_info) except Exception as e: print(e) raise Exception('获取视频信息失败') def video_width_height(self): streams = self._video_info['streams'][0] return (streams['width'],streams['height']) def video_filesize(self, format = 'gb'): v_format = self._video_info['format'] size = int(v_format['size']) kb=1024 mb=kb*1024 gb=mb*1024 tb=gb*1024 if size>=tb: return "%.1f TB" % float(size / tb) if size>=gb: return "%.1f GB" % float(size / gb) if size>=mb: return "%.1f MB" % float(size / mb) if size>=kb: return "%.1f KB" % float(size / kb) def video_full_frame(self): stream = self._video_info['streams'][0] return stream['nb_frames'] def video_time_length(self): v_format = self._video_info['format'] return str(int(float(v_format['duration'])/3600)).__add__('小时').__add__(str(int(float(v_format['duration'])%3600/60))).__add__('分钟') def video_info(self): item = { 'path': self.filepath, 'height_width': self.video_width_height(), 'filesize': self.video_filesize(), 'time_length': self.video_time_length() } print('item = ', item) return itemif __name__ == "__main__": ffprobe = FFprobe() ffprobe.parse('https://1252524126.vod2.myqcloud.com/9764a7a5vodtransgzp1252524126/4e89d74d5285890792243257460/drm/voddrm.token.MWVmNGRkjI2MTEzNDEzMVFxUFU4SEs3d3crUWREbTVTSk55YUhxRW1VTTBjVzMrTFN6T0VnbjhZZmZscTRVcQ.v.f230.m3u8?time=1592901564214') print(ffprobe.video_info())