n different streamings about flask-video-streaming

[miguelgrinberg]

Streaming videos was not what I was thinking when I created this demo, but sure, it would be fairly easy to have the client pass the source as an argument to the streaming endpoint.

I just have to say, that if what you are after is streaming videos, there are much better ways to do that than sending the video as a sequence of jpeg images.

[dragonxtek]

What other better ways are?
I guess send video as a sequence of jpeg images uses less bandwidth.
If I have a video with 30fps, camera.read() reads 30fps by default or less?
How can you define the fps on camera.read() ?

[miguelgrinberg]

Videos use more efficient compression algorithms than motion jpeg. Jpeg streaming is not efficient, it is mostly use for security cameras and similar type of low-end live video streaming.

The <video> tag in the browser can play mp4 video without any additional help, for example. Consider that if you stream as jpegs, the server will have to decode the original video and then re-encode as a sequence of jpegs. it's a lot of work, and you end up using more bandwith. If you have the videos already stored in your server, just serve them as files and let the browser deal with them directly.

[dragonxtek]

Exactly, but I'm thinking in pre-process the on-real time video with opencv to detect some pattern

[miguelgrinberg]

@dragonxtek Okay, if you have to decode the frames in the server for the image detection part, then serving the result as motion jpeg might be okay.

[miguelgrinberg]

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