From last few weeks in camtasia I had a problem when i put more than one clip on timeline my preview screen start start lagging

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From last few weeks in camtasia I had a problem when i put more than one clip on timeline my preview screen start start lagging i have tried many way to fix it still its lagging i have also change change to software mode but still its not working please reply me as soon as possible
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My Advice

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Posted 2 years ago

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kayakman, Champion

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what is the source of the clips?  their dimensions? file types?  are they 60 FPS, or variable bit rate?

more details would help
(Edited)
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My Advice

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Its 30fps and source of the clips is .mp4 and also when I put more than one clip preview screen start lagging
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kayakman, Champion

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where did the MP4 come from; "some" MP4s can have issues in Camtasia

clip dimensions?

are you editing [project settings] at the same dimensions as the clip?
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entinel_entinel

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Same problem here. All the clips come from my phone, Samsung Galaxy S10.  Shot in 1920x1080. When I add the audio files and annotations the video starts lagging and the audio and images are off sync
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kayakman, Champion

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I don't work with phone video clips; suggest you contact free tech support; available if you use Camtasia 2019
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entinel_entinel

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Thanks! Ok, how do I do that? I thought this was it... :D
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kayakman, Champion

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This is a free service and you can submit a ticket here:
http://support.techsmith.com/?_ga=2.147219063.1528368540.1546739436-815980675.1365725991

Or call, >>> 1.517.381.2300
Toll Free: 800.517.3001 (U.S. & Canada Only)
8:00 AM to 7:00 PM EST Monday through Friday

(Edited)
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entinel_entinel

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Got it! Thanks a bunch!