Frame Dimensions, Number of Lines, and Resolution

AVCHD supports three HD video resolutions:

å1920 x 1080: This format is sometimes called Full HD because it contains the full 1920 horizontal pixels of the 1080-line HD format.

å1440 x 1080: This is a horizontally subsampled image with 1080 lines.

å1280 x 720: This is a full-resolution 720p format.

SD NTSC- and PAL-compatible formats are also defined in the AVCHD specification:

å720 x 480 at 60i

å720 x 576 at 50i

Important: The SD AVCHD formats are not supported by Final Cut Pro.

Frame Rate

The specified AVCHD frame rates are:

åNTSC-compatible frame rate: 29.97 fps (1080i60, 720p60)

åPAL-compatible frame rate: 25 fps (1080i50, 720p50)

åFilm-compatible frame rate: 23.98 fps (1080p24, 720p24)

Scanning Method

AVCHD can record either interlaced or progressive scan images:

å1080 lines: Interlaced (1080i) or progressive (1080p)

å720 lines: Progressive

Color Recording Method

The AVCHD color sample ratio is 4:2:0, with 8 bits per sample.

Data Rate

The amount of storage space required by AVCHD footage depends on the quality setting chosen on the camcorder. Most camcorders support several quality levels, although these quality levels have different names and bit rates on different camcorders. When variable bit rate (VBR) encoding is used, complex and rapidly changing video requires more data, shortening recording time. Therefore, stated variable bit rates are an average.

Chapter 6 Working with AVCHD

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6 specifications

The Apple iPhone 6, released in September 2014, marked a significant evolution in Apple's smartphone lineup. This model introduced a larger screen and a sleeker design, setting the stage for future devices in the iPhone series.

One of the most notable features of the iPhone 6 was its display. With a 4.7-inch Retina HD screen, the iPhone 6 offered a resolution of 1334 x 750 pixels, delivering vibrant colors and sharp images. This screen size was a departure from previous models, appealing to users who favored larger displays for better viewing experiences, whether for gaming, watching videos, or browsing the web.

The design of the iPhone 6 was another highlight. It featured a slim, curved aluminum body that not only made it more aesthetically pleasing but also improved its ergonomics. Weighing just 129 grams, the phone was light yet robust. The placement of volume buttons, the power button, and the headphone jack was thoughtfully designed to enhance usability.

Under the hood, the iPhone 6 was powered by the A8 chip, a 64-bit dual-core processor that offered impressive performance and energy efficiency. Coupled with the M8 motion coprocessor, the device could effectively handle demanding apps and services while optimizing battery life, providing users with a smooth experience throughout the day.

The camera capabilities of the iPhone 6 were also advanced for its time. It featured an 8-megapixel rear camera with optical image stabilization and a f/2.2 aperture, allowing for clearer low-light photography. The front-facing camera was improved as well, offering a 1.2-megapixel resolution and support for 720p HD video, making it great for selfies and video calls.

Connectivity options included LTE support, enabling faster download speeds, and Wi-Fi calling, which allowed users to make calls over Wi-Fi networks, enhancing communication in areas with poor cellular coverage. The iPhone 6 also introduced the Apple Pay feature, allowing users to make secure transactions using their devices.

In terms of software, the iPhone 6 originally came with iOS 8, which boasted new features such as HealthKit and HomeKit, further integrating technology into daily life. Regular software updates ensured that users could enjoy the latest features and security enhancements well into the device's lifecycle.

Overall, the iPhone 6 distinguished itself with a combination of innovative design, powerful performance, and a user-friendly experience, solidifying Apple's position in the smartphone market and paving the way for future iterations in the iPhone lineup.
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