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I'm Missing Frames but Log says, "None."
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sinc747  
#1 Posted : Monday, September 5, 2016 6:05:50 PM(UTC)
sinc747

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I'm missing frames in my recording but the log says that there are no missing frames.

Here's a link to a YouTube clip from today's church service and sermon:
?t=14m19s

The recorded version has the same jump in the same place, so it's not YouTube. Other jumps noted in other places, this is just the most obvious.

Specs...
i7-4710HQ 2.5GHz, 16GB RAM, GeForce GTX 970M laptop.
vMix 17.0.0.107
vMix Recorder specs: Record to 7200 RPM 2nd drive, 1920X1080, 29.97P, 8Mbps bit rate, H264Main profile, Hardware Encoder - yes
vMix log for this recording is below

All this leads me to believe that vMix is recording a jump or skip from the camera.

Any thought?

- Tom

P.S. If you enjoy contemporary Christian praise music, start at the beginning of the video for two songs. The first is one of my favorites.


---------LOG----------------------------------

9/4/2016 10:02:42 AM, Version: 17.0.0.107 x64
9/4/2016 10:02:42 AM, Size: 1920x1080
9/4/2016 10:02:42 AM, System: NTSC 29.97p
9/4/2016 10:02:42 AM, Codec: H264
9/4/2016 10:02:42 AM, Format: UYVY 16 1498831189
9/4/2016 10:02:42 AM, AudioDevice: vMix Audio
9/4/2016 10:02:42 AM, AudioFormat: 48000 Hz 16 Bit 2 Channels
9/4/2016 10:02:42 AM, AudioDelay: 0
9/4/2016 10:02:42 AM, RestartInterval: 0
9/4/2016 10:02:42 AM, Buffers: 10
9/4/2016 10:02:42 AM, BitRate: 8 Mbps
9/4/2016 10:02:42 AM, AudioBitRate: 128 Kbps
9/4/2016 10:02:42 AM, StartRecording
9/4/2016 10:48:20 AM, StopRecording
9/4/2016 10:48:20 AM, Duration: 00:45:38
9/4/2016 10:48:20 AM, Frames: 82057
9/4/2016 10:48:20 AM, DroppedFrames: 0
9/4/2016 10:48:20 AM, DueToSourceFrameRate: 0
9/4/2016 10:48:20 AM, DueToHardDiskOrCPU: 0
9/4/2016 10:48:20 AM, DroppedSamples: 0
9/4/2016 10:48:20 AM, MissedSamples: 0
9/4/2016 10:48:20 AM, SyncedSamples: 0
9/4/2016 10:48:20 AM, AudioOffset: 0
9/4/2016 10:48:20 AM, AudioDelay: 200
9/4/2016 10:48:20 AM, AudioEngine
9/4/2016 10:48:20 AM, Running: True
9/4/2016 10:48:20 AM, SampleRate: 48000hz 16 Bit
9/4/2016 10:48:20 AM, MixingErrors: 0
9/4/2016 10:48:20 AM, Streams
9/4/2016 10:48:20 AM, Mixer
9/4/2016 10:48:20 AM, Samples: 162582
9/4/2016 10:48:20 AM, Dropped: Read 0 Write 0
9/4/2016 10:48:20 AM, Latency: 0 ms
9/4/2016 10:48:20 AM, Errors: 0
9/4/2016 10:48:20 AM, Output
9/4/2016 10:48:20 AM, Samples: 162582
9/4/2016 10:48:20 AM, Dropped: Read 0 Write 0
9/4/2016 10:48:20 AM, Latency: 30 ms
9/4/2016 10:48:20 AM, Errors: 0
9/4/2016 10:48:20 AM, A
9/4/2016 10:48:20 AM, Samples: 162582
9/4/2016 10:48:20 AM, Dropped: Read 0 Write 0
9/4/2016 10:48:20 AM, Latency: 40 ms
9/4/2016 10:48:20 AM, Errors: 0
9/4/2016 10:48:20 AM, AAC
9/4/2016 10:48:20 AM, Samples: 158497
9/4/2016 10:48:20 AM, Dropped: Read 3509 Write 0
9/4/2016 10:48:20 AM, Latency: 100 ms
9/4/2016 10:48:20 AM, TargetLatency: 100 ms
9/4/2016 10:48:20 AM, Resampled: 160/17540
9/4/2016 10:48:20 AM, Errors: 0
9/4/2016 10:48:20 AM, Audio
9/4/2016 10:48:20 AM, Samples: 162442
9/4/2016 10:48:20 AM, Dropped: Read 2 Write 0
9/4/2016 10:48:20 AM, Latency: 40 ms
9/4/2016 10:48:20 AM, TargetLatency: 67 ms
9/4/2016 10:48:20 AM, Resampled: 0/20
9/4/2016 10:48:20 AM, Errors: 0
9/4/2016 10:48:20 AM, DirectShow
9/4/2016 10:48:20 AM, Samples: 162469
9/4/2016 10:48:20 AM, Dropped: Read 12 Write 0
9/4/2016 10:48:20 AM, Latency: 1260 ms
9/4/2016 10:48:20 AM, Errors: 0
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richardgatarski  
#2 Posted : Tuesday, September 6, 2016 6:15:46 AM(UTC)
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Which Windows version?
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sinc747  
#3 Posted : Tuesday, September 6, 2016 11:15:57 PM(UTC)
sinc747

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Windows 10 Anniversary update
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admin  
#4 Posted : Wednesday, September 7, 2016 4:58:16 AM(UTC)
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Hi Tom,

It looks like you are using the IP stream from the camera, correct?
As it is not NDI (yet!) it is not as reliable or as low latency so every now and then vMix needs to "resync" the stream
to match the camera and this can lead to a small amount of missing frames.

The fix is to use a capture card or increase the buffer size of the stream, disabling low latency mode.

Regards,

Martin
vMix
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thanks 2 users thanked admin for this useful post.
stigaard on 9/7/2016(UTC), sinc747 on 9/7/2016(UTC)
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