英文:
How would I go about playing a video stream with ffpyplayer?
问题
First time poster here, so go easy on me.
我第一次在这里发帖,所以请对我宽容一些。
I'm working on a fun little project for myself and friends, basically I want to be able to stream and recieve video using ffmpeg, as a sort of screen sharing application. I'm a complete python noob and im just going off of the documentation for each.
我正在为自己和朋友做一个有趣的小项目,基本上我想要能够使用ffmpeg来流式传输和接收视频,作为一种屏幕共享应用程序。我完全不懂Python,只是根据每个文档进行操作。
Heres what I have for sending:
这是我用于发送的代码:
import ffmpeg
stream = ffmpeg.input("video.mp4")
stream = ffmpeg.output(stream, "tcp://127.0.0.1:1234", format="mpegts")
ffmpeg.run(stream)
It's simple but it works, when I run ffplay.exe -i tcp://127.0.0.1:1234?listen -hide_banner
in a command prompt and run the code to send the video, it works perfectly, but when I try and use my code to recieve a video, all I get is audio, no video, and after the video has finished the last second of the audio is repeated.
这很简单但有效,当我在命令提示符中运行ffplay.exe -i tcp://127.0.0.1:1234?listen -hide_banner
并运行发送视频的代码时,它完美运行。但是当我尝试使用我的代码接收视频时,我只得到音频,没有视频,并且在视频结束后,音频的最后一秒会被重复播放。
Heres the recieving code:
这是接收代码:
from ffpyplayer.player import MediaPlayer
test = MediaPlayer("tcp://127.0.0.1:1234?listen")
while True:
test.get_frame()
if test == "eof":
break
Thanks for any help and sorry if im just being oblivious to something
感谢任何帮助,如果我对什么事情视而不见,请原谅
英文:
First time poster here, so go easy on me.
I'm working on a fun little project for myself and friends, basically I want to be able to stream and recieve video using ffmpeg, as a sort of screen sharing application. I'm a complete python noob and im just going off of the documentation for each.
Heres what I have for sending:
import ffmpeg
stream = ffmpeg.input("video.mp4")
stream = ffmpeg.output(stream, "tcp://127.0.0.1:1234", format="mpegts")
ffmpeg.run(stream)
It's simple but it works, when I run ffplay.exe -i tcp://127.0.0.1:1234?listen -hide_banner
in a command prompt and run the code to send the video, it works perfectly, but when I try and use my code to recieve a video, all I get is audio, no video, and after the video has finished the last second of the audio is repeated.
Heres the recieving code:
from ffpyplayer.player import MediaPlayer
test = MediaPlayer("tcp://127.0.0.1:1234?listen")
while True:
test.get_frame()
if test == "eof":
break
Thanks for any help and sorry if im just being oblivious to something
答案1
得分: 1
你的代码中只是从 video.mp4 中提取帧。
test = MediaPlayer("tcp://127.0.0.1:1234?listen")
while True:
test.get_frame()
if test == "eof":
break
现在,你需要使用一些第三方库来显示这些提取出的帧,因为ffpyplayer没有提供内置功能来循环显示帧。
以下代码使用OpenCV来显示提取的帧。使用以下命令安装OpenCV和numpy:
pip3 install numpy opencv-python
将你的接收器代码更改为:
from ffpyplayer.player import MediaPlayer
import numpy as np
import cv2
player = MediaPlayer("tcp://127.0.0.1:1234?listen")
val = ''
while val != 'eof':
frame, val = player.get_frame()
if val != 'eof' and frame is not None:
img, t = frame
w = img.get_size()[0]
h = img.get_size()[1]
arr = np.uint8(np.asarray(list(img.to_bytearray()[0])).reshape(h, w, 3)) # h - 帧的高度, w - 帧的宽度, 3 - 帧中的通道数
cv2.imshow('test', arr)
if cv2.waitKey(25) & 0xFF == ord('q'):
cv2.destroyAllWindows()
break
你也可以直接使用Python的subprocess运行ffplay命令。
英文:
You are only extracting frames from video.mp4 in your code.
test = MediaPlayer("tcp://127.0.0.1:1234?listen")
while True:
test.get_frame()
if test == "eof":
break
Now, you need to display them using some third-party library since ffpyplayer doesn't provide any inbuilt feature to display frames in a loop.
Below code uses OpenCV to display extracted frames. Install OpenCV and numpy using below command
pip3 install numpy opencv-python
Change your receiver code to
from ffpyplayer.player import MediaPlayer
import numpy as np
import cv2
player = MediaPlayer("tcp://127.0.0.1:1234?listen")
val = ''
while val != 'eof':
frame, val = player.get_frame()
if val != 'eof' and frame is not None:
img, t = frame
w = img.get_size()[0]
h = img.get_size()[1]
arr = np.uint8(np.asarray(list(img.to_bytearray()[0])).reshape(h,w,3)) # h - height of frame, w - width of frame, 3 - number of channels in frame
cv2.imshow('test', arr)
if cv2.waitKey(25) & 0xFF == ord('q'):
cv2.destroyAllWindows()
break
you can also run ffplay command directly using python subprocess
通过集体智慧和协作来改善编程学习和解决问题的方式。致力于成为全球开发者共同参与的知识库,让每个人都能够通过互相帮助和分享经验来进步。
评论