Choosing the right video codec

The recommended codecs for capture with the AlchemyTV are Motion-JPEG and MPEG-4.

Motion JPEG: This codec has some fairly large space requirements, but has the advantage of requiring less processing power to encode (eg. record) and remains editable in some video applications. You can for example open a MJPEG video in Final Cut. You can also do some basic editing (cut the adverts out of your recorded programme, for example) with QuickTime Pro.

MPEG-4: The MPEG-4 codec requires more processing power, but requires less hard drive space to be recorded. MPEG-4 files cannot be edited by a video application.

You can attempt to use other codecs, but this might result in dropped frames or the inability to record video at all.

5.Via the Motion sub-menu, you can select the number of frame per second that should be recorded. If you capture from a PAL source, 25 fps is the optimum value. For NTSC, choose 30 fps. The ‘Best’ option will automatically set the fps value at the maximum possible.

You can force the software to create a ‘key frame’ at a given value. Unlike normal frames, a key frame is not based on the previous frame and will increase the overall quality of your video. Having more key frames increases the size of the captured video. This function is for advanced users.

It is possible to increase the compression rate of your video by limiting the data rate. Note that picture quality will suffer. Limiting the data rate requires additional processing power as well.

The Motion sub-menu allows you to modify the fps value as well as the data rate and key frame

occurance

Note: The compression menu is an essential tool if you wish to record programmes onto your hard drive. The type of compression and image size depend on the processing power of your computer. If the captured video is not running at full frame rate, select the MJPEG codec instead of MPEG-4 (if applicable) or reduce the video size. It might take a few attempts before you find the right setting for your Mac.

AlchemyTV™ User Guide

Page 12

Page 13 Page 15
Page 14
Image 14
Miglia Technology Alchemy TV manual Choosing the right video codec
Page 13 Page 15

Alchemy TV specifications

Miglia Technology Alchemy TV is a cutting-edge device designed to revolutionize the way users interact with television and media. Specifically tailored for Mac users, it merges entertainment with advanced technology, providing a seamless experience that enhances viewing enjoyment.

One of the standout features of Alchemy TV is its ability to receive and display digital television signals. This ensures that users can access high-definition broadcasts without the need for a separate cable box or satellite dish. By connecting the device to the Mac via USB, users instantly transform their computer into a powerful television viewing station.

The user interface of Alchemy TV is intuitively designed, making it easy for even the least tech-savvy individuals to navigate. The application that accompanies the device allows users to schedule recordings, pause live television, and even rewind shows, providing a personalized viewing experience that can be accessed at any time. This flexibility is particularly appealing in today's fast-paced world, where viewers often multitask or have unpredictable schedules.

In terms of technology, Alchemy TV incorporates advanced video processing technology to deliver crisp and clear pictures. It supports various resolutions, including standard and high-definition formats, ensuring compatibility with a wide range of displays. Moreover, the device is equipped with sophisticated encoding software that optimizes video quality while minimizing storage requirements.

Another remarkable aspect of Alchemy TV is its integration capabilities. Users can easily transfer recorded programs from their Mac to other devices, such as iPods or iPhones, allowing for on-the-go entertainment. This feature promotes a seamless media experience, where users are not confined to their living rooms but can enjoy their favorite shows wherever they are.

The device also supports a variety of input sources, including cable, satellite, and over-the-air broadcasting. This versatility makes Alchemy TV an excellent choice for users with diverse viewing preferences. Additionally, it features a built-in electronic program guide (EPG), which provides users with detailed information about upcoming shows, making it easier to plan viewing schedules.

Ultimately, Miglia Technology Alchemy TV stands out for its combination of user-friendly features, advanced technology, and integration capabilities. This device not only enhances the television viewing experience but also embodies the future of digital media consumption, making it an essential accessory for any modern Mac user.
Top Page Image Contents