本标准规定了包含压缩视频、AES3音频数据和相关数据的数据块的轨道内容、格式和记录方法，这些数据块在盒式磁带中的12.65 mm磁带上形成螺旋记录。本标准支持以23.98 Hz、24 Hz、25 Hz和29.97 Hz的帧速率，使用1920 x1080像素，以及SMPTE 274M中规定的4:4:4和4:2:2采样结构记录源图片格式，并以50 Hz和59.94 Hz的帧速率，使用1280x720像素，以及SMPTE 296M中规定的4:2:2采样结构（见注释）。该标准还支持记录12个通道的AES3音频数据和3行未压缩的消隐间隔数据。 本标准包括使用ISO/IEC 14496-2（MPEG-4 simple studio profile）定义的DCT和DPCM编码方法支持图片压缩的打包和洗牌操作。笔记本标准的早期实施可能不符合SMPTE 296M中规定的50Hz帧速率。

This standard specifies the track content, format, and recording method of the data blocks containing compressed video, AES3 audio data, and associated data which form the helical records on 12.65-mm tape in cassettes. This standard supports recording of source picture formats using 1920 x1080 pixels with the 4:4:4 and 4:2:2 sampling structure specified in SMPTE 274M at the frame rate of 23.98 Hz, 24 Hz, 25 Hz, and 29.97 Hz, and using 1280x720 pixels with the 4:2:2 sampling structure specified in SMPTE 296M at the frame rates of 50 Hz and 59.94 Hz (see note). This standard also supports recording of 12 channels of AES3 audio data and 3 lines of uncompressed blanking interval data. This standard includes packetizing and shuffling operations supporting picture compression using the DCT and DPCM encoding methods defined by ISO/IEC 14496-2 (MPEG-4 simple studio profile). NOTE?Early implementations of this standard might not comply to the frame rate of 50Hz as specified in SMPTE 296M.