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| Nevs |
| Posted: Apr 5 2013, 03:15 PM |
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Newbie
Group: Members
Posts: 2
Member No.: 36376
Joined: 5-April 13
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I recently got a Logitech HD Pro C920 Webcam, and I am using a Sennheiser PC 360 headset. I am trying to capture video with this through Virtualdub but I am having a problem. The video and audio seem to capture fine, but if I record about a minute long video, the audio will slow start to move out of sync with the video, and then my voice will start to increase in pitch. I've tried tweaking the capture formats for both the audio and video, but the same thing continues to happen. Does anyone have any suggestions on how to fix this? I'm stumped... |
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| Nevs |
| Posted: Apr 9 2013, 03:32 PM |
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Newbie
Group: Members
Posts: 2
Member No.: 36376
Joined: 5-April 13
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nobody? I feel like this should be pretty easy to fix...Let me know if there's anything I can add to make solving the issue easier. |
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| Abrazo |
| Posted: Apr 9 2013, 06:42 PM |
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Advanced Member
Group: Members
Posts: 775
Member No.: 28995
Joined: 5-November 10
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If you insist...
Mostly there is no problem when your pc must only record audio. The time to compress and to write the information to the harddisk are rather limited.
It is something else when recording video at the same time. Depending on the video-compression codec that you are using and the bitrate that you have set, it can be that your pc cannot follow anymore. In that manner you get what is called "dropped frames".
In VirtualDub in 'capture mode' you can decide what must be done in this case, via Capture > Timing...
My experience is that you best uncheck all the checkboxes and choose "Do not resync between video and audio streams".
To avoid dropped frames you can try:
- changing parameters in the video (compression-)codec,
- choosing an other video-codec (that takes less cpu- and/or harddisk-resources),
- not using any 'filters' nor 'cropping' while capturing,
- not compress the audio (so there is a little more time for compressing the video).
Eventually you can select some more information that is interesting to you, out of this thread:
> http://forums.virtualdub.org/index.php?act...=ST&f=6&t=21444 |
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