Studio 4K Plays Out Using VLC Player

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Doug Westly

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Studio 4K Plays Out Using VLC Player

PostFri Apr 07, 2017 8:34 pm

I would like to use the Studio 4K to play "video out" of a Windows 10 computer by way of a VLC player.

I work for a television station that insists on using Windows 10 computers to play all of their programming. I use the Windows 10 "Task Scheduler" to activate the VLC player to play videos. I then use a "PC to TV" converter, (scaler), for the actual "video out" display. This poses a problem because when a video does not play when it is supposed to, the viewer will see the desktop of a computer, (no video is playing so it displays the computer desktop instead). I want to use a "no video detection" switch, so that when there is no video, the "no video detection" switch automatically switches over to another computer that is playing video.

My thought is that the Studio 4K will either be putting out a video signal, or it will not.

The Studio 4k would be needed to play video out into an baseline analog environment, using RCA fittings.
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Tom_Bassford

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Re: Studio 4K Plays Out Using VLC Player

PostFri Apr 07, 2017 10:23 pm

Use CasparCG with a decklink. This is a proper professional solution designed for broadcast. VLC isn't a pro solution.


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if it was easy it wouldn't be called engineering
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Doug Westly

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Re: Studio 4K Plays Out Using VLC Player

PostSun Apr 09, 2017 9:19 pm

Tom,

Thank you for your reply. Please consider the following:
1. I am using a desktop computer that runs Windows 10 Home version.
2. I am in the U.S. and we use NTSC and not PAL.
3. I am intrigued by the program that you suggest, and I am going to look into it. For now though, will the VLC player work with Studio 4K in my situation?
4. As to the program that you suggested: will it work with a desktop computer running Windows 10 home version?
5. Does the program that you suggest have it's own scheduling program?
6. The videos that are being produced are .avi files. Will that program run them?
7. They are still in an SD environment, and I have to use RCA fittings that will run through a switching system that is all baseline SD.
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Tom_Bassford

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Re: Studio 4K Plays Out Using VLC Player

PostMon Apr 10, 2017 4:31 pm

1. should be OK with CasparCG
2. yes thats fine
3. VLC probably will not work with a decklink but take a look at https://trac.videolan.org/vlc/ticket/12678 you *might* manage to get it going..
4. see 1 :)
5. There are various playout clients for CasparCG - look at http://cast.red/ and http://forum.casparcg.com/viewtopic.php?t=3644
6. Almost certainly, CasparCG uses FFMPEG to playback thus it supports most codecs in the avi wrapper.
7. CasparCG supports proper interlaced NTSC output vis decklink so you are all good there.

cheers
http://www.atemuser.com
if it was easy it wouldn't be called engineering
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chasapis.christos

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Re: Studio 4K Plays Out Using VLC Player

PostTue Apr 18, 2017 6:02 pm

There is an alternative to VLC or CasparCG automation software
https://sourceforge.net/projects/cbroad ... =directory

But it is on Linux

if you need help mail to software.chasapis@gmail.com
It's for free!

Keyfetures :
Decode Streams
Scheduling
Web interface
Cliend and Server for free
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tracygreen201503

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Re: Studio 4K Plays Out Using VLC Player

PostFri Apr 21, 2017 12:55 am

Very informative information.
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Ronan Le Meillat

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Re: Studio 4K Plays Out Using VLC Player

PostMon Jun 05, 2017 1:37 pm

On MacOS Sierra 10.12.5 I managed to compile VLC git with Decklink support (SDK 10.9.3) it works perfectly with PCI Decklink Mini Monitor 4k except bugs:
I cannot success to have a letterbox movie (ie 1920x800 in UHD or HD) but files with no aspect resizing plays correctly.
Also x264 codec does not work to decklink / ultrastudio but if I specify ffmpeg as a prefered codec gives a good result

This is how I proceed
Compile:

I have the BMD SDK installed in /Users/rlemeill/Development/blackmagic-declink-sdk-10.9.3

I followed the official VLC procedure with BMD Desktop Video 10.9.3 SDK
https://wiki.videolan.org/OSXCompile/#Prebuilt_libraries_.28recommended.29 with
Code: Select all
--with-decklink-sdk=/Users/rlemeill/Development/blackmagic-declink-sdk-10.9.3/Mac/
configure parameter
It does not compile out of the box git. Because of the declaration of CFString in the SDK
So I made a basic patch. It changes a few Strings and add some debug info. It is not correctly coded but it is only for my personal use, if someone wants to make it correct (remove hardcoded audio rate, add listboxs for selecting cards/outpiut format…), It is something like a proof of concept!
The couter part is now it needs "-framework CoreFramework" in g++ parameters due to Apple's CFString

I manually added this parameter in
build/modules/Makefile
Code: Select all
CXX = g++ -framework CoreFoundation -stdlib=libc++ -std=c++11 -mmacosx-version-min=10.7


But I did not try if defining CXXFLAGS="-framework CoreFoundation" while executing

Configuration:
In preferences click on "Show All"
Image
Image
Image

The card number is the order it appears under Blackmagic Video Setup tool.

Here there is my build but it is not signed

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