101 lines
3.2 KiB
Python
101 lines
3.2 KiB
Python
import json
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import time
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import subprocess as sp
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import ffmpeg
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import cv2
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import sys
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import random
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import numpy as np
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"""
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获取视频基本信息
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"""
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def get_video_info(in_file):
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try:
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probe = ffmpeg.probe(in_file)
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# format = probe['format']
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# size = int(format['size'])/1024/1024
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video_stream = next((stream for stream in probe['streams'] if stream['codec_type'] == 'video'), None)
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if video_stream is None:
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print('No video stream found', file=sys.stderr)
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return
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width = int(video_stream['width'])
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height = int(video_stream['height'])
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# num_frames = int(video_stream['nb_frames'])
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up, down = str(video_stream['r_frame_rate']).split('/')
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video_stream['fps']=eval(up) / eval(down)
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# duration = float(video_stream['duration'])
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# bit_rate = int(video_stream['bit_rate'])/1000
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print('width: {}'.format(width))
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print('height: {}'.format(height))
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# print('num_frames: {}'.format(num_frames))
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# print('bit_rate: {}k'.format(bit_rate))
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# print('fps: {}'.format(fps))
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# print('size: {}MB'.format(size))
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# print('duration: {}'.format(duration))
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return video_stream
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except Exception as err:
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print("aaaaaaaaaaaaaaaaaaaa", err)
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return None
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if __name__ == '__main__':
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file_path = "rtmp://live.play.t-aaron.com/live/THSAa"
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while True:
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video_info = get_video_info(file_path)
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print(json.dumps(video_info))
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if video_info is None:
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time.sleep(2)
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continue
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else:
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break
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command = ['ffmpeg',
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# '-re',
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'-y',
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'-c:v', 'h264_cuvid',
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'-i', file_path,
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'-pix_fmt', 'bgr24',
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'-f', 'rawvideo',
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'-an',
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'-']
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width = int(video_info['width'])
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height = int(video_info['height'])
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fps = int(video_info['fps'])
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p = sp.Popen(command, stdout=sp.PIPE)
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ai_video_file = cv2.VideoWriter(r"C:\Users\chenyukun\Desktop\shipin\aaaa.mp4", cv2.VideoWriter_fourcc(*'mp4v'), fps,
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(width, height))
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start1 = time.time()
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while True:
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start = time.time()
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in_bytes = p.stdout.read(int(width * height * 3))
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if not in_bytes:
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print(in_bytes)
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p.stdout.close()
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p.wait()
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break
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# img = (np.frombuffer(in_bytes, np.uint8)).reshape((int(height), int(width)))
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# bgr_img = cv2.cvtColor(img, cv2.COLOR_YUV2BGR_NV12)
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in_frame = (np.frombuffer(in_bytes, np.uint8).reshape([int(height), int(width), 3]))
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# print("拉流时间：", time.time() - start)
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# frame = cv2.resize(in_frame, (1280, 720)) # 改变图片尺寸
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# i += 1
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# print(round(time.time()-start, 5))
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#
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ai_video_file.write(in_frame)
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# if time.time() - start1 > 60:
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# ai_video_file.release()
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# p.stdout.close()
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# p.wait()
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# break
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# cv2.imshow('frame', in_frame)
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# cv2.waitKey(1)
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# time.sleep(1111)
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p.stdout.close()
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p.wait()
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p.kill() |