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ClementN  
#1 Posted : Wednesday, May 9, 2012 5:00:00 AM(UTC)
ClementN

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Testing v3

We had 3 sessions in a row to for recording and streaming in the same time (full hd).

Settings fro the recorder: .mpg, bitrate 25

Unfortunately, the third "video" is not ok as it has only sound and no video.


After that, we had another 2-3 tries with wrong results and then everything was back to normal.

We tried to analyze what happened and didn't found any wrong step.

Is this a known situation ?

Thank you very much
admin  
#2 Posted : Wednesday, May 9, 2012 9:01:49 PM(UTC)
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Hi,

Could you try the following on the broken video clip:

1. Download MediaInfo from http://mediainfo.sourceforge.net/en
2. Open MediaInfo and go to File -> Open to open the video clip.
3. Have a look at the results and report back if it is showing a video and/or audio stream.

Thanks,

Martin
vMix
ClementN  
#3 Posted : Thursday, May 17, 2012 10:52:53 AM(UTC)
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Hello Martin,


Sorry, I didn't see your reply.

So, I downloaded the program and the details from some of those files are bellow.

Please note that since then, we saw that same problem (no video but sound) several times without seeing any pattern for that.



FILE 1
==============================================================
CompleteName : ..................... - 08 May 2012 - 10-48-24 AM.mpg
Format : MPEG-PS
FileSize/String : 152 MiB
Duration/String : 33mn 47s
OverallBitRate_Mode/String : Constant
OverallBitRate/String : 627 Kbps

Audio
ID/String : 192 (0xC0)
Format : MPEG Audio
Format_Version : Version 1
Format_Profile : Layer 2
Duration/String : 33mn 47s
BitRate_Mode/String : Constant
BitRate/String : 384 Kbps
Channel(s)/String : 2 channels
SamplingRate/String : 44.1 KHz
Compression_Mode/String : Lossy
StreamSize/String : 92.8 MiB (61%)
==============================================================


FILE 2
==============================================================
CompleteName : .................. - 16 May 2012 - 09-34-32 AM.mpg
Format : MPEG-PS
FileSize/String : 15.8 MiB
Duration/String : 3mn 30s
OverallBitRate_Mode/String : CBR
OverallBitRate/String : 627 Kbps

Audio
ID/String : 192 (0xC0)
Format : MPEG Audio
Format_Version : Version 1
Format_Profile : Layer 2
Duration/String : 3mn 30s
BitRate_Mode/String : CBR
BitRate/String : 384 Kbps
Channel(s)/String : 2 channel2
SamplingRate/String : 44.1 KHz
Compression_Mode/String : Lossy
StreamSize/String : 9.64 MiB (61%)
==============================================================
admin  
#4 Posted : Thursday, May 17, 2012 7:55:51 PM(UTC)
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What CPU, GraphicsCard and Memory do you have installed on your system?

Thanks,

Martin
ClementN  
#5 Posted : Friday, May 18, 2012 3:33:04 AM(UTC)
ClementN

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Windows 7 Professional 64 bit

Intel® CoreTM i7-2600K SandyBridge, 3400MHz, 8MB
8GB 1600MHz DDR3 Non-ECC CL9
Gainward nVidia GeForce GTX 460, 2048MB
2 x SSD
Asus P8P67-PRO/REV3.0
admin  
#6 Posted : Friday, May 18, 2012 6:41:01 AM(UTC)
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Thanks,

How many inputs were running approximately when the issue occurred?
Were you using the Video Delay input at all?

Regards,

Martin
vMix
ClementN  
#7 Posted : Friday, May 18, 2012 11:06:46 AM(UTC)
ClementN

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3 video inputs. All of them Intensity pro

No video delay used. Only audio delay (sometimes).

But the same problem occurred both with and without audio delay.
ClementN  
#8 Posted : Tuesday, May 22, 2012 4:12:56 AM(UTC)
ClementN

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This is the only problem we have before adopting this software for our live productions.

Martin, can we find a way to be alerted on this is happening before the end of the show?

At this moment there is no way for us to know the recorder started wrong before the end.

Thank you,


admin  
#9 Posted : Tuesday, May 22, 2012 4:42:23 AM(UTC)
admin

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Man
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Try the latest version and check in Task Manager the memory usage of vMix.
If the memory usage is under 1-1.5GB then the recording should be fine. It seems to be a bug in the MPEG-2 encoder (by Microsoft) when
a lot of memory is in use.

Also, if you are using "Stereo Mix" as the audio source, use vMix Virtual Capture instead.
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