mjpg-streamer + C920 webcam

Started by eduard, October 28, 2014, 06:33:23 PM

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eduard

I use to broadcast
mjpg-streamer + C920 webcam
but I am unable to use hardware compression chamber
1280s720 = 40Mbit / s
how to get 1280s720 = 2 Mbit / s
Help is very necessary !!!

RUS:
Для трансляции я использую
mjpg-streamer + C920 webcam
но мне не удается задействовать аппаратное сжатие камеры
1280с720 = 40Мбит/с 
как получить  1280с720 = 2Мбит/с
Помогите очень надо!!!

Gerrit

MJPG-streamer converts your camera pictures to JPG images, the way to get a lower bitrate is a smaller picture (less pixels), or slow down the frame-rate (less refreshing)

so find a way to make the camera produce a smaller picture


Help for input plugin..: UVC webcam grabber
[-r | --resolution ]...: the resolution of the video device,
                          can be one of the following strings:
                          QSIF QCIF CGA QVGA CIF VGA
                          SVGA XGA SXGA
                          or a custom value like the following
                          example: 640x480



something like this .mjpg_streamer -i "./input_uvc.so -d /dev/video0 -r 640x480" -o "./output_http.so -w ./www"


eduard

Then why objasnit Raspberry Pi c 1280x720 settings creates a flow 2.5Mbt / s

Gerrit

what size is the jpeg picture you are streaming ?

eduard

I do not know the size but pretty sure that the case hardware compression chamber s920 in jpeg
when the processor attempts to compress the A20 immediately CPU load of 100%.
how it is achieved in hardware compression chamber do not understand!