Originally Posted by fatherom
Apologies if this has been covered, but does anyone know how these sets accomplish media playback? Is it part of webOS? Is it a SOC?
I find the 4K media playback (MP4, MKV, etc) quite good, and just wondering how LG implements it, and how it compares to things like a Dune media player.
Both? I'm not sure quite what you're asking.
These sets as well as just about any standalone player will use hardware decoding, since that's cheaper and much more power efficient than including a CPU powerful enough to do software decoding (especially for 4k). But you can't exactly just plug a USB stick (or other data source) into an SOC with a hardware decoding block and expect anything to happen. The whole system has to be managed by whatever software it's running.
Decoding itself isn't going to very much from player to player, though. Encoding leaves some room for flexibility (since the encoder has to choose how to map raw video data to a compressed representation), but decoding is usually clearly defined. Most video content you would be playing maps quite directly to what should
be sent over an HDMI cable, in terms of pixel values, resolution, framerate, and other metadata such as HDR or 3D. One correctly behaving video source shouldn't generally give you a different picture from another, short of extra processing like upscaling, noise reduction, or motion enhancement (which the TV can always do anyway).