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Martin, Can you explain the difference please (x64 Version 9.0.0.106) ? simple short test with (build in laptop) webcam of recordings: recording(with title): Quote:1-3-2013 0:12:42, Size: 640x480
1-3-2013 0:12:42, System: NTSC 60i or 30p
1-3-2013 0:12:42, Codec: DV Video Encoder
1-3-2013 0:12:42, RestartInterval: 0
1-3-2013 0:12:42, BitRate: 8
1-3-2013 0:21:44, StartRecording
1-3-2013 0:22:43, StopRecording
1-3-2013 0:22:43, Duration: 00:00:59
1-3-2013 0:22:43, Frames: 1772
1-3-2013 0:22:43, DroppedFrames: 0
1-3-2013 0:22:43, DueToSourceFrameRate: 0
1-3-2013 0:22:43, DueToHardDiskOrCPU: 0
multicorder (same source): Quote:1-3-2013 0:21:45, Size: 640x480
1-3-2013 0:21:45, System: NTSC 60i or 30p
1-3-2013 0:21:45, Codec: DV Video Encoder
1-3-2013 0:21:45, RestartInterval: 0
1-3-2013 0:21:45, StartRecording
1-3-2013 0:22:40, StopRecording
1-3-2013 0:22:40, Duration: 00:00:55
1-3-2013 0:22:40, Frames: 417
1-3-2013 0:22:40, DroppedFrames: 1246
1-3-2013 0:22:40, DueToSourceFrameRate: 1246
1-3-2013 0:22:40, DueToHardDiskOrCPU: 0
-recording started at same time -filesize recorder 204.640 kB; Multicorder 48.960 kB -side by side playback in coaching software : recorder clip plays speeded up 4 times ; multicorder clip normal speed Thanks Guy
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To me, this seems obvious: some of your settings were wrong. The single recording has 1772 frames, none dropped; yet the multicording has only 417 valid frames, while 1246 frames have been dropped, that's why the multicording is only 1/4 the size and plays 4x too fast. The good news is: none of the dropped frames were dropped because your disk or cpu are to slow, they all got dropped "due to source frame rate".
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Joined: 1/13/2010(UTC) Posts: 5,208  Location: Gold Coast, Australia Was thanked: 4288 time(s) in 1520 post(s)
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The MultiCorder requires that the source is able to produce a frame rate equal to what has been selected (30p in this case).
It looks like the webcam is only sending frames at around 15fps which would make it unsuitable for use with MultiCorder.
Regards,
Martin
vMix
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Rank: Advanced Member
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Joined: 12/27/2012(UTC) Posts: 5,216 Location: Belgium Thanks: 291 times
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Thank you Martin tried a bit more , internal , external webcam and SD camera through firewire . The momenent I want to also record one of the webcamfeeds the DV feed recording is also dropping frames I can understand that that multicorder might not be suited if a webcam can not produce the framerate needed but why would that also influence the DV feed then ? How can I test the fps of a webcam ? btw, the speeded up playback was notiçed in other software, in vMix it looked 'normal' Quote:The good news is: none of the dropped frames were dropped because your disk or cpu are to slow, they all got dropped "due to source frame rate". :-) i7, dual HD 7200 in raid laptop
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On a somewhat related topic...
What settings provide the best "lossless" recording?
And is there a way to "tweak" them?
My findings so far:
I have tended to use DV encoder AVI but find that the image is soft and graphics not clean (look good in windows media player but not Premiere Pro CS5) Ave Data rate 3.6 MB/sec.
MPEG-2 TS is not compatible with Premiere Pro CS5.
MPEG-2 mpg seems to give the best results for editing with Premiere Pro CS5, Ave Data Rate 6.1 MB/sec, but I have not used this setting extensively.
WMV obvious compression, Ave Data rate 85 KB/sec
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