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freenefilim  
#1 Posted : Sunday, January 15, 2012 5:38:17 PM(UTC)
freenefilim

Rank: Newbie

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Joined: 1/15/2012(UTC)
Posts: 7
Location: Paris
hello and thanks for this powerfull software, I am testing it for the moment in demo mode since one week and I found an Important problem :

my system :

computer : I7 windows seven 64bits 12go ram.
2 Sdi declink card
1 intensity
2 camera Sony Ex1 xdcam (I use the sdi-hd and sd output to the declink cards)


I did many test with this system and all works fine. But when I record (Mpg2/8Mb) I found like aliasing in the result. so I did many test in hd and sd (50i/25p/50p), mpeg or Avi, with my two Sony cameras the aliasing artefact is always here, some capture images :


recorded with Vmix http://www.actionimagepr...iane/aliasing%20Vmix.jpg
zoom in the artefact http://www.actionimagepr...iasing%20Vmix%20Zoom.jpg
more aliasing in multiview http://www.actionimagepr...Sofiane/aliasing%20multi

recorded with the camera no aliasing http://www.actionimagepr...cord%20no%20aliasing.jpg


-So, this is my problem.
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admin  
#2 Posted : Monday, January 16, 2012 12:03:24 AM(UTC)
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Man
Location: Gold Coast, Australia

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Hi,

There are three different resolution options in vMix, can you check they are all the same?

1. The resolution in Settings
2. The resolution of the Camera
3. The resolution of the Recording

Make sure they all match the resolution you have set for the camera and try recording to Mpeg2 with the highest bitrate (50Mb)

Also, what graphics card are you using?

Thanks,

martin
vMix
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admin  
#3 Posted : Monday, January 16, 2012 12:20:26 AM(UTC)
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Man
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Hi,

There appears to be a quality issue when recording to a different resolution than the output.
This will be fixed in the next release, but in the mean time if you will be recording to 1280x720 make sure the Output Size in settings is also set to 1280x720.

Regards,

Martin
vMix
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freenefilim  
#4 Posted : Monday, January 16, 2012 8:52:44 AM(UTC)
freenefilim

Rank: Newbie

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Joined: 1/15/2012(UTC)
Posts: 7
Location: Paris
Hi Martin and thanks for the answer,

my graphic card Geforce 9600Gt.

-I did the test at 720p50 and I record at 50mB ok it's working (I did it also at 25mB because is better for blueray, but I thing you know it aliasing appears)
also, I noticed in the preview screen, inputs, on air screen of Vmix, I can see the aliasing (settings, camera at 720):

http://www.actionimagepr...Capture%20vmix%20720.PNG

http://www.actionimagepr...ltiview%20vmix%20720.PNG

http://www.actionimagepr...ane/Capture%20inputs.PNG

thanks
Sofiane
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admin  
#5 Posted : Monday, January 16, 2012 10:12:52 AM(UTC)
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Man
Location: Gold Coast, Australia

Was thanked: 4332 time(s) in 1528 post(s)
Hi,

A small amount of aliasing in the previews is to be expected as vMix prioritises the high quality rendering for the video output.

If you set the output size in settings to 1280x720 and the recording to 1280x720 the aliasing in the recording will be gone.
(You will need to restart vMix after changing the settings)

Regards,

Martin
vMix
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freenefilim  
#6 Posted : Monday, January 16, 2012 11:50:34 AM(UTC)
freenefilim

Rank: Newbie

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Joined: 1/15/2012(UTC)
Posts: 7
Location: Paris
Hi Martin,

-you said "A small amount of aliasing in the previews is to be expected as vMix prioritises the high quality rendering for the video output". ok why not :) ...
-I agree at 1280x720 recorded at 50mb there is no aliasing But, The thing was interesting for me in Vmix is to record SD pal mpeg2 then burn it to dvd just after mixing (conference for exemple) ..the 720p 50mb will take lot of time to burn DVD and in the same time using the external output with hd recorder (ex : atamos ninja, samourai).

So I will wait for the next release.

Beyond that, Vmix is in my top list, including great features.
by the way some suggestions for the future releases :

-dockable windows on the main Vmix windows for the audio mixer, shortcuts pad..etc.
-possiblity to use an external controller with the shortcuts for exemple :

http://www.thomann.de/fr/novation_launchpad.htm
http://www.thomann.de/fr...0006f0c7758e883882efd665

-direct access in main window to zoom, wipe, slide transition. (button for each)


thanks again,
Sofiane
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