250 lines
10 KiB
Python
250 lines
10 KiB
Python
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# -*- coding: utf-8 -*-
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import time
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import cv2
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import subprocess as sp
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import ffmpeg
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import numpy as np
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from loguru import logger
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'''
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获取视频信息
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'''
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def get_video_info(pullUrl):
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try:
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probe = ffmpeg.probe(pullUrl)
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if probe is None or probe.get("streams") is None:
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return
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# 视频大小
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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.get('codec_type') == 'video'), None)
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if video_stream is None:
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logger.error("根据拉流地址未获取到视频流")
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return
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width = video_stream.get('width')
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height = video_stream.get('height')
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nb_frames = video_stream.get('nb_frames')
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fps = video_stream.get('r_frame_rate')
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# duration = video_stream.get('duration')
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bit_rate = video_stream.get('bit_rate')
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if width:
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width = int(width)
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if height:
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height = int(height)
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if nb_frames:
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all_frames = int(nb_frames)
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if fps:
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up, down = str(fps).split('/')
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fps = int(eval(up) / eval(down))
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# if duration:
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# self.duration = float(video_stream['duration'])
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if bit_rate:
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bit_rate = int(bit_rate) / 1000
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logger.info("视频信息, width:{}|height:{}|fps:{}|all_frames:{}|bit_rate:{}", width,
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height, fps, all_frames, bit_rate)
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except ffmpeg._run.Error as er:
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logger.error("获取视频信息异常: {}", er.stderr.decode(encoding='utf-8'))
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except Exception as e:
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logger.exception("获取视频信息异常：{}", e)
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'''
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拉取视频
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'''
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def build_pull_p(wh, pullUrl):
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try:
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command = [r'E:\liumeiti\ffmpeg\ffmpeg-master-latest-win64-gpl\bin\ffmpeg',
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'-re',
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'-y',
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'-c:v', 'h264_cuvid',
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'-resize', wh,
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'-i', pullUrl,
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'-f', 'rawvideo',
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'-an',
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'-']
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return sp.Popen(command, stdout=sp.PIPE)
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except Exception as e:
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logger.exception("构建拉流管道异常：{}", e)
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return None
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def read(whr, whrz, pullUrl, h, w):
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result = None
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try:
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in_bytes = build_pull_p(whrz, pullUrl).stdout.read(whr)
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if in_bytes is not None and len(in_bytes) > 0:
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# result = (np.frombuffer(in_bytes, np.uint8).reshape([int(self.height), int(self.width), 3]))
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try:
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img = (np.frombuffer(in_bytes, np.uint8)).reshape((h, w))
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except Exception as ei:
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logger.exception("视频格式异常：{}", ei)
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result = cv2.cvtColor(img, cv2.COLOR_YUV2BGR_NV12)
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except Exception as e:
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logger.exception("读流异常：{}", e)
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return result
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def close(self):
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if self.pull_p:
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if self.pull_p.stdout:
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self.pull_p.stdout.close()
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self.pull_p.terminate()
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self.pull_p.wait()
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logger.info("关闭拉流管道完成, requestId:{}", self.requestId)
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if self.p:
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if self.p.stdin:
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self.p.stdin.close()
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self.p.terminate()
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self.p.wait()
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# self.p.communicate()
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# self.p.kill()
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logger.info("关闭管道完成, requestId:{}", self.requestId)
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if self.or_video_file:
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self.or_video_file.release()
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logger.info("关闭原视频写入流完成, requestId:{}", self.requestId)
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if self.ai_video_file:
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self.ai_video_file.release()
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logger.info("关闭AI视频写入流完成, requestId:{}", self.requestId)
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# async def push_stream_write(self, frame):
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# self.p.stdin.write(frame.tostring())
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#
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# async def push_stream(self, frame):
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# if self.p is None:
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# self.build_p()
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# try:
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# await self.push_stream_write(frame)
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# return True
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# except Exception as ex:
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# logger.exception("推流进管道异常：{}, requestId: {}", ex, self.requestId)
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# current_retry_num = 0
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# while True:
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# try:
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# time.sleep(1)
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# self.p_push_retry_num += 1
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# current_retry_num += 1
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# if current_retry_num > 3 or self.p_push_retry_num > 600:
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# return False
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# self.build_p()
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# await self.push_stream_write(frame)
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# logger.info("构建p管道重试成功, 当前重试次数: {}, requestId: {}", current_retry_num,
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# self.requestId)
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# return True
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# except Exception as e:
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# logger.exception("构建p管道异常：{}, 开始重试, 当前重试次数：{}, requestId: {}", e,
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# current_retry_num, self.requestId)
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# return False
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# async def video_frame_write(self, or_frame, ai_frame):
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# if or_frame is not None:
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# self.or_video_file.write(or_frame)
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# if ai_frame is not None:
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# self.ai_video_file.write(ai_frame)
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# async def video_write(self, or_frame, ai_frame):
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# try:
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# self.build_write()
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# if or_frame is not None and len(or_frame) > 0:
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# await self.video_frame_write(or_frame, None)
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# if ai_frame is not None and len(ai_frame) > 0:
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# await self.video_frame_write(None, ai_frame)
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# return True
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# except Exception as ex:
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# ai_retry_num = 0
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# while True:
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# try:
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# ai_retry_num += 1
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# if ai_retry_num > 3:
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# logger.exception("重新写入离线分析后视频到本地,重试失败：{}, requestId: {}", e, self.requestId)
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# return False
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# if or_frame is not None and len(or_frame) > 0:
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# await self.or_video_file.write(or_frame)
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# if ai_frame is not None and len(ai_frame) > 0:
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# await self.ai_video_file.write(ai_frame)
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# logger.info("重新写入离线分析后视频到本地, 当前重试次数: {}, requestId: {}", ai_retry_num,
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# self.requestId)
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# return True
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# except Exception as e:
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# logger.exception("重新写入离线分析后视频到本地：{}, 开始重试, 当前重试次数：{}, requestId: {}", e,
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# ai_retry_num, self.requestId)
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# def build_write(self):
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# try:
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# if self.fps is None or self.width is None or self.height is None:
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# raise ServiceException(ExceptionType.VIDEO_CONFIG_EXCEPTION.value[0],
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# ExceptionType.VIDEO_CONFIG_EXCEPTION.value[1])
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# if self.orFilePath is not None and self.or_video_file is None:
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# self.or_video_file = cv2.VideoWriter(self.orFilePath, cv2.VideoWriter_fourcc(*'mp4v'), self.fps,
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# (int(self.wn), int(self.hn)))
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# if self.or_video_file is None:
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# raise ServiceException(ExceptionType.OR_WRITE_OBJECT_EXCEPTION.value[0],
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# ExceptionType.OR_WRITE_OBJECT_EXCEPTION.value[1])
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# if self.aiFilePath is not None and self.ai_video_file is None:
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# self.ai_video_file = cv2.VideoWriter(self.aiFilePath, cv2.VideoWriter_fourcc(*'mp4v'), self.fps,
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# (int(self.width), int(self.hn)))
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# if self.ai_video_file is None:
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# raise ServiceException(ExceptionType.AI_WRITE_OBJECT_EXCEPTION.value[0],
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# ExceptionType.AI_WRITE_OBJECT_EXCEPTION.value[1])
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# except ServiceException as s:
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# logger.exception("构建文件写对象异常: {}, requestId:{}", s, self.requestId)
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# raise s
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# except Exception as e:
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# logger.exception("构建文件写对象异常: {}, requestId:{}", e, self.requestId)
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# raise e
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# def video_merge(self, frame1, frame2):
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# # frameLeft = cv2.resize(frame1, (int(self.width / 2), int(self.height / 2)), interpolation=cv2.INTER_LINEAR)
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# # frameRight = cv2.resize(frame2, (int(self.width / 2), int(self.height / 2)), interpolation=cv2.INTER_LINEAR)
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# # frame_merge = np.hstack((frameLeft, frameRight))
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# frame_merge = np.hstack((frame1, frame2))
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# return frame_merge
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#
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# def getP(self):
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# if self.p is None:
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# logger.error("获取管道为空, requestId:{}", self.requestId)
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# raise ServiceException(ExceptionType.PULL_PIPELINE_INIT_EXCEPTION.value[0],
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# ExceptionType.PULL_PIPELINE_INIT_EXCEPTION.value[1])
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# return self.p
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#
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# def getCap(self):
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# if self.cap is None:
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# logger.error("获取cv2为空, requestId:{}", self.requestId)
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# raise ServiceException(ExceptionType.CV2_IS_NULL_EXCEPTION.value[0],
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# ExceptionType.CV2_IS_NULL_EXCEPTION.value[1])
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# return self.cap
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#
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# def getOrVideoFile(self):
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# if self.or_video_file is None:
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# logger.error("获取原视频写入对象为空, requestId:{}", self.requestId)
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# raise ServiceException(ExceptionType.OR_WRITE_OBJECT_EXCEPTION.value[0],
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# ExceptionType.OR_WRITE_OBJECT_EXCEPTION.value[1])
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# return self.or_video_file
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#
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# def getAiVideoFile(self):
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# if self.ai_video_file is None:
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# logger.error("获取AI视频写入对象为空, requestId:{}", self.requestId)
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# raise ServiceException(ExceptionType.AI_WRITE_OBJECT_EXCEPTION.value[0],
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# ExceptionType.AI_WRITE_OBJECT_EXCEPTION.value[1])
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# return self.ai_video_file
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if __name__== "__main__":
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command = ['ffmpeg',
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'-rtsp_transport', 'tcp',
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'-i', 'rtsp://127.0.0.1:8554/video', # 指定输入文件
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'-c', 'copy',
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'-f', 'flv',
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"rtmp://192.168.10.101:19350/rlive/stream_9?sign=f8a15b6n"]
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p = sp.Popen(command, shell=False)
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while True:
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time.sleep(2)
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print("pid", p.pid)
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print("poll", p.poll())
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print("returncode", p.returncode)
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# p.terminate()
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# p.wait()
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