Python: Convert bitmap to jpg on the fly

Asked May 21 '22 at 08:45

Active May 22 '22 at 11:58

Viewed 130 times

I am using autopy to take screenshots from my ubuntu desktop and publish to mqtt as a jpeg so I can view on home assistant via the mqtt camera entity. My solution works but I want to do the conversion on the fly without an intermediate file.

    screen=autopy.bitmap.capture_screen()
    screen.save("screenshot.jpeg")
    with open("screenshot.jpeg", 'rb') as f:
        filecontent = f.read()
    byteArr = bytearray(filecontent)
    client.publish(topic_screen, byteArr)

I would prefer to use autopy for the capture as I am using this to detect mouse movements in the same project.

edited May 22 '22 at 11:58

hardillb

54,545
11
67
105

asked May 21 '22 at 08:45

Sujit Vasanth

Use a `BytesIO` https://stackoverflow.com/a/70275120/2836621 – Mark Setchell May 21 '22 at 08:48
would be helpful to resize the image also to save bandwidth – Sujit Vasanth May 21 '22 at 08:49
why are you saving the image to disk? is that what you really want? – Rinkesh P May 21 '22 at 08:51
i dont need to save the image to disk - its because I couildnt find a solution to do it without an intermidiate file – Sujit Vasanth May 21 '22 at 08:52
@Mark Setchell Is there any way to avoid the PIL dependency? for isntance directing the sreen.save to an array as opposed to a file? – Sujit Vasanth May 21 '22 at 08:54
@SujitVasanth https://stackoverflow.com/questions/47797744/converting-an-autopy-bitmap-to-a-pillow-image you can look into this. Ideally you should avoid saving and reading from disk as it involves system calls and is much slower. – Rinkesh P May 21 '22 at 08:57

Python: Convert bitmap to jpg on the fly

0 Answers0