Not at some arbitrary time limit. The reason for the limit was to avoid being classified as a video camera and getting hit with extra duties/taxes. Did some searching, there are firmware hacks for the D3100, D5100, and D7000 that remove the limit, haven't found anything working on the D3200 yet.
Resolution. 4672 x 3084. Sensor photo detectors (Mpix) 14.41. Sensor size (mm) 15.4 x 23.1. Color filter array. RGB. Pixel pitch (µm)
The Nikon D3100 has a wide range of resolutions and frame rates. The only video recording formats supported are H.263/MPEG-4 AVC and H.263/MPEG-4. It is not specified how the sample rate of the audio track varies during movie recording. Audio is recorded at 24 kHz inmonaural 16-bit PCM, regardless of frame rate or quality, regardless of video
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nikon d3100 video recording time limit