Comparison World Vision T625D5 vs Romsat T7085HD

IPTV service support — broadcasting by the IP protocol, using computer networks (including the Internet).

This feature should not be confused with online TV: in fact, IPTV is a type of cable television, where not an antenna cable is used to transmit the signal, but network equipment. Otherwise, IPTV and cable TV are completely similar: broadcasting is carried out through the operator; the choice of channels is limited by the assortment presented by the operator; and additional charges may apply for access. At the same time, the possibilities of IPTV are much wider than those of traditional cable broadcasting. Most specialized applications have a Time Shift feature (see below); any excerpt of a recently watched broadcast can be re-watched; in addition, it is often also possible to rewind the broadcast to a point in time before the start of viewing (if you turned on such a TV later than you planned). Other features may be provided for additional convenience, such as favorite channel lists, parental guaid, etc.

In this case, the term coaxial refers to a type of SP/DIF interface that uses an electrical cable with an RCA connector. This interface provides sound transmission, including multichannel, in digital format; at the same time, the electrical cable is more susceptible to interference than the optical one, but is not as fragile.

The model of the CPU installed in the media player.

This information is mainly of reference value: the processor is selected in such a way as to provide certain practical characteristics (maximum resolution, support for certain standards, embedded applications, etc.). So when choosing, you should focus primarily on these specifications. However, if you wish, knowing the processor model, you can find detailed data on it and evaluate the capabilities of the media centre to work with resource-consuming applications. This can be useful, in particular, if you choose an Android model (see above) and plan to use additional software intensively — the set of applications for this OS is very extensive, and some of them are quite demanding on system resources.

Also note that CPU data is often specified for advertising purposes — to emphasize that the device has a fairly advanced chip from a well-known brand. Among the most common brands of such processors are Allwinner, Amlogic, Rockchip, Realtek.

Codec — from the phrase "Encoder-DECoder" — in this case is the format used for encoding digital video during storage/transmission and decoding during playback (without encoding, video data would take up an unjustifiably large amount of space). Do not confuse this parameter with the format of video files: different files of the same format can be encoded with different codecs, and if the corresponding codec is not supported by the player, video playback will be impossible, even if the file format itself corresponds to the capabilities of the device. And in models with online TV support (see "Features") this nuance also determines compatibility with a specific broadcast: the general format of the broadcast is indicated by the codec used for this.

In general, modern devices usually have quite extensive sets of codecs (one of the most advanced for 2021 is H.265), and there are usually no problems with video playback; in extreme cases, you can use special programs for transcoding files. As for specific codecs, detailed data on them can be found in special sources, but with standard use of media players, such details are not needed.

The set of audio codecs supported by the device

Codec — from the phrase "Encoder-DEcoder" — in this case, the format used for encoding and compressing sound in digital form during storage/transmission and decoding — during playback (digital sound is basically impossible without encoding, and compression allows to reduce the amount of data). Information about supported codecs is relevant primarily for assessing whether the player will be able to work with sound in a particular video file. The fact is that even in video files of the same format (see below), sound can be compressed by different codecs; and if the player supports the file format, but does not support the codec, sound playback will become impossible.

Theoretically, these rules are also relevant for audio files and online broadcasts (all formats — TV, video, audio). However, in fact, when working with such content, you can ignore codec data. So, for each audio file format, usually, its own standard codec is used, and file type support automatically means codec support. Broadcasts usually use generally accepted audio decoders like MPEG-1 or MPEG-2, which are practically guaranteed to be supported by any modern player designed for such broadcasts.

As for specific codecs, detailed information on them can be found in special sources, however, with the standard use of devices, such details are usually not needed.

The device has its own external screen. Such a screen has a small size and performs an auxiliary role; various additional information can be displayed on it: operating mode, selected media, file name and location, playback time, etc.