Welcome to the forum.
Can you give us some details on your Sony camera? As mfgr's sites can be heck to navigate, if you can give both the model number, and also the full specs. of the files, that would be helpful.
Next, please tell us about the Project/Sequence, that you are Capturing into, plus your Preferences>Capture settings?
If you are Capturing SD material, you might have more luck with Scenealyzer, and if HD, then more success with HDVSplit.