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OBS (Open Broadcaster Software) let DV Camcorder livestreaming with facebook live Youtube live

 

How to let DV camcorder live streaming on PC?

OBS (open broadcaster software) is the best choice.

OBS have MAC version and windows version.


Besides OBS, it still have anther livesteaming software

for exmaple :  wirecast, xplit.....

This article is base on  OBS livestreaming  software. 





How to use MAC OBS

The below video use facebook live



 USB2.0 FEBON168HDMI
grabber card
 USB3.0 FEBON169 HDMI
grabber card
 
 USB3.0 FEBON179 HDMI
grabber card
 
 VIDEO DEMO
 1.audio shfit 350-400ms
2.APPLE hardware
  compression
3.resolution 1280x720
 1.audio shfit 250-350ms
2.APPLE hardware
  compression
3.resolution 1280x720
 1. audio shfit 250-350ms
2.APPLE hardware
  compression
3.resolution 1280x720








 USB3.0 FEBON180HDM capture card
video demo

1.audio shfit 350-400ms2.APPLE hardware
  compression
3.resolution 1280x720



How to use WINDOWS OBS
The below video use facebook live


 USB2.0 FEBON168
HDMI grabber card




 1.audio shfit 250-350ms
2.hardware. compression
3.resolution 1280x720
 USB3.0 FEBON178
HDMI grabber card



1.audio shfit 150-250ms
2.hardware. compression
3.resolution 1280x720
 USB3.0 FEBON169 HDMI grabber card




1.audio shfit 150-250ms
2.hardware compression
3.resolution 1280x720
 USB3.0 FEBON179 HDMI
grabber card



1.audio shfit 150-250ms
2. hardware compression
3.resolution 1280x720




新推出!!! USB3.0 FEBON80 HDMI 擷取卡
Video demo

1.audio shfit 150-250ms
2.hardware. compression
3.resolution 1280x720





HDMI output of DV camcorder input PC.
and then use OBS to process the video  and then...... live upload into facebook / Youtube


diagram:






We can divided many things to discuss.

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Internet connecting


Internet is the basic problem.
if your video performance is  better but internet is not good, the livesstreaming will be bad


internet is the basic issue!!


Usually, we can see the internet speed on the end of OBS software 

For example: 
you can see the internet upload speed is 2726 


if the number is below. 1000, the internet is bad!

it will occur the interrupt livesteaming!






W suggest that you can use the wire internet. 

For MAC use,  you can add the " RJ45 to USB adapter"



internet main chip is  AX88772A


This chip AX88772A is dirverless for MAC OSX








DV camcorder:


 We always use HDMI output of camcorder as the video source


But, Not all of camorder have live hdmi output.

Although you can see the hdmi connector on the Camcorder,  it just for play back not live video



For examle:
Panasonic GF3 GF4 .

its hdmi output just for play back only





By the way, some camera hdmi  output is just video only and no audio

For example: Canon DSLR  (500d, 450d....7d......)


I DO NOT recommend that you use Canon as the video source.

reason:
1. no audio
2. video is just 1920x1080i output.

For USB2.0 FEOBN168 UVC HDMI grabber card, it will have a little up and down.





I suggest that you can use SONY DV camcorder as video / audio source






USB UVC hdmi  grabber card:

I recommend driver free  no driver UVC HDMI grabber card

1. USB2.0 FEBON168 UVC HDMI grabber card


2. USB3.0 FEBON169 UVC HDMI grabber card 



3. USB3.0 FEBON179 UVC HDMI grabber card

Why driver free ?

1.Good compatible for difference platform

 MAC OSX. / WIDNWOS /  some of android phone....




2.Good compatible for video conference software

compatible for OBS / wirecast / xplit


PC:

windows / mac / ubuntu





OBS setup



Windows OBS input video setup

If you use windows OBS to select the device,it do not show the video right now

please follow the below steps






audio sampling rate

The sample rate of audio from the HDMI machine are  44.1khz  / 48khz.
The audio sample rate in the PC ( windows / MAC ) must equal the audio  sample rate of HDMI

if audio  sample rate of hdmi is  44.1Khz and UAC audio  44.1Khz in the PC, the audio will be normal
if audio  sample rate of hdmi is  48Khz and UAC audio 48Khz in the PC, the audio will be normal
If audio sample rate of hdmi is  44.1Khz and UAC audio  48Khz in the PC, the audio will happen "Bi Bi" noise.
If audio sample rate of hdmi is  48Khz and UAC audio  44.1Khz in the PC, the audio will happen "Bi Bi" noise.







Use hardware compression to keep sync of Video and audio

Depend on my many experience,  The CPU using rate must be below 40%

please follow the table to setup the parameter
 


audio be shit +300 to +400ms

why shift?
two reason
1.MAC OBS video latency itself is about  +200ms
 2.video uvc capture card latency is about 100-  250 ms.
  it is depend on  difference the grabber card

total latency is about  +300ms to  +400ms




video input and output resolution

When you use facebook live, it is enough for use  1280x720

if you select higher than 1280x720, it will let your cpu using rate be higher.




Hardware compression:


The default compression of OBS is X264
X264 is software compression.

For the same video,
if you use X264, it will be 60% cpu using rate
if you use hardware compression, it will reduce and become 30%











OBS also provide some extra service.

Picture in picture,  add Logo,   add words (electronic scroll )....



Use OBS to add Logo







Use OBS to add electronic scroll










 Video demo for OBS setup by using USB2.0 FEOBN168


Youtube live

facebook live


Livehouse.in




MAC OBS setting

Youtube Live

 
facebook LiVE

Taiwan Livehouse.in









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