What card are you using (specific brand, speed rating, etc.)? Did you format the card in the camcorder?
You should avoid the usage of micro SD cards. These can cause all sorts of issues.
Also, we'll still need to know other details about the card (speed rating, etc. what class? Is there any "V" rating?)
See this, starting on page 31.
In additiona, the use of micro SD cards with an adapter is not recemmended. We see issues like this is both still image and camcorders all the time.
Bay Area - CA
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