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如何讓外接攝影機連接手機做行動直播

智慧手機有分成安卓手機和iOS手機
兩種手機都可以連外接直播擷取卡讓攝影機進行直播

安卓直播: app camaerafi live
 
iOS直播: app  medialink live
 使用擷取卡: FEBON iCapture hdmi擷取卡

https://febon.blogspot.com/2018/01/hdmi-capture-card-for-ios-iphone-ipad.html





比如你可以連接GoPro hero 7 , SONY DV等等

這兩種系統又以iPhone直播專用擷取卡的效能最好
所謂的效能指的是下面4件事情

1.直播流暢度:有沒有到每秒30fps
安卓直播會頓頓的

2.直播的bit rate 碼流可否可以調整
很可惜的, 安卓app camerafi live 的bit rate不太高,
直播過程中很容易看到馬賽克

iOS app medialink live的 bit rate可調整 10000~10000kbps

關於剛剛講的那兩點,可以看實際比較的模擬直播畫面比較
眼見為憑
   



How connect external camera display or live streming to iPhone iPad


  Is it possible to let external camera to the iPhone iPad (iOS)?






external camera can be divided two part

item 1. HDMI CVBS (TV out)

    eg:  SONY camcorder, GoPro hero 5 hero 6.... a




item 2.  external USB uvc webcam camera output

    eg: usb logitech webcam C310 C525 ...






HOW to Turn USB webcam to HDMI (TV out)







How to let USB UVC webcam to become HDMI output and dispaly on TV?

You can use "FEBON uvc webcam to hdmi adapter"

USB UVC webcam camera convert to HDMI and display on TV





   This box  can let uvc usb webcam become hdmi output

"UVC webcam to hdmi" have many detail technical problem to be solve

1. UVC Webcam video stream

   UVC webcam have  YUV  and MJPG  stream

   YUV means no compression . MJPG menas compression stream.

   YUV  video frame rate will be slower than MJPG video frame rate.

   Each YUV and each MJPG also have difference resolution.


   if you catch 640X 480 resolution, the resolution is bad.


   The best uvc stream that be caught  is  MJPG  1280X720.

    The reason is as below

     reason 1: the frame rate can be 30fps

     reason 2 : the video resolution is HD. video performance is better.

          if you caugh 1920x1080 uvc, the frame rate will be reduce.






2. HDMI output is  1920X1080P

    After getting the uvc stream,  it will be convert to 1920x1080p hdmi output.

        We can not fixed the uvc resoution and uvc format and uvc frame rate.

   so, it must have the ability that can let all of kind of uvc resolution  become  1920x1080p  full HD hdmi output.


   

如何讓GoPro HERO 7 Black 在iPhone iPad實況直播





GoPro hero 7 black內建的app "gopro" 可以讓gopro hero 7 black直接用wifi 連接
透過iPad iPhone做實況直播

除了無線的連線外,還可以使用有線HDMI方式連接:







1.無線連線直播
















目前只能做臉書的個人直播,無法做臉書的粉絲團直播

 沒有youtube twitch 直播,必須要透過手動貼上rtmp串流碼才能進行直播