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Recorder - no video, only sound
Rank: Advanced Member
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Joined: 5/7/2012(UTC) Posts: 185  Location: Bucharest Thanks: 48 times
Was thanked: 13 time(s) in 11 post(s)
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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
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Rank: Administration
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Joined: 1/13/2010(UTC) Posts: 5,208  Location: Gold Coast, Australia Was thanked: 4287 time(s) in 1520 post(s)
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Hi, Could you try the following on the broken video clip: 1. Download MediaInfo from http://mediainfo.sourceforge.net/en2. 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
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Rank: Advanced Member
Groups: Registered
Joined: 5/7/2012(UTC) Posts: 185 Location: Bucharest Thanks: 48 times
Was thanked: 13 time(s) in 11 post(s)
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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%)
==============================================================
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Rank: Administration
Groups: Administrators
Joined: 1/13/2010(UTC) Posts: 5,208 Location: Gold Coast, Australia Was thanked: 4287 time(s) in 1520 post(s)
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What CPU, GraphicsCard and Memory do you have installed on your system?
Thanks,
Martin
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Rank: Advanced Member
Groups: Registered
Joined: 5/7/2012(UTC) Posts: 185 Location: Bucharest Thanks: 48 times
Was thanked: 13 time(s) in 11 post(s)
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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
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Rank: Administration
Groups: Administrators
Joined: 1/13/2010(UTC) Posts: 5,208 Location: Gold Coast, Australia Was thanked: 4287 time(s) in 1520 post(s)
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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
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Rank: Advanced Member
Groups: Registered
Joined: 5/7/2012(UTC) Posts: 185 Location: Bucharest Thanks: 48 times
Was thanked: 13 time(s) in 11 post(s)
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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.
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Rank: Advanced Member
Groups: Registered
Joined: 5/7/2012(UTC) Posts: 185 Location: Bucharest Thanks: 48 times
Was thanked: 13 time(s) in 11 post(s)
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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,
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Rank: Administration
Groups: Administrators
Joined: 1/13/2010(UTC) Posts: 5,208 Location: Gold Coast, Australia Was thanked: 4287 time(s) in 1520 post(s)
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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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