Sony NEX-3NL α Handbook - Page 193
AVCHD format
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Table of contents Sample photo Menu Index AVCHD format The AVCHD format is a high definition digital video camera format used to record a high definition (HD) signal of either the 1080i specification1) or the 720p specification2) using efficient data compression coding technology. The MPEG-4 AVC/H.264 format is adopted to compress video data, and the Dolby Digital or Linear PCM system is used to compress audio data. The MPEG-4 AVC/H.264 format is capable of compressing images at higher efficiency than that of the conventional image compressing format. The MPEG-4 AVC/H.264 format enables a high definition video signal shot on a digital video camera recorder to be recorded on 8 cm DVD discs, hard disk drive, flash memory, memory card, etc. Discs recorded with HD (high definition) image quality can be played back only on AVCHD format-compatible devices. DVD-based players or recorders cannot play back HD image quality discs, as they are incompatible with the AVCHD format. Also, DVDbased players or recorders may fail to eject HD image quality discs. Recording and playback on your camera Based on the AVCHD format, your camera records with the high definition image quality (HD) mentioned below. Video signal3): 1080 60i-compatible device MPEG-4 AVC/H.264 1920 × 1080/60i, 1920 × 1080/24p 1080 50i-compatible device MPEG-4 AVC/H.264 1920 × 1080/50i, 1920 × 1080/25p Audio signal: Dolby Digital 2ch Recording media: Memory card 1) 1080i specification A high definition specification which utilizes 1,080 effective scanning lines and the interlace system. 2) 720p specification A high definition specification which utilizes 720 effective scanning lines and the progressive system. 3) Data recorded in AVCHD format other than the above mentioned cannot be played on your camera. 193GB