![]() ![]() C The MaxDpbSize, maximum number of pictures in the decoded picture buffer, for the maximum luma picture size of that level is 6 for all levels. B The maximum frame rate supported by HEVC is 300 frames per second (fps). For the Intra profiles the maximum bit rate increases by 2x. For chroma sampling the maximum bit rate increases by 1.5x for 4:2:2 profiles and 2x for 4:4:4 profiles. For bit depth the maximum bit rate increases by 1.5x for 12-bit profiles and 2x for 16-bit profiles. Tiers and levels with maximum property values LevelĮxample picture resolution frame rate Ī The maximum bit rate of the profile is based on the combination of bit depth, chroma sampling, and the type of profile. A decoder that conforms to a given tier/level is required to be capable of decoding all bitstreams that are encoded for that tier/level and for all lower tiers/levels. For levels below level 4 only the Main tier is allowed. A level is a set of constraints for a bitstream. ![]() The HEVC standard defines thirteen levels. The Main tier was designed for most applications while the High tier was designed for very demanding applications. The tiers were made to deal with applications that differ in terms of their maximum bit rate. The Main tier is a lower tier than the High tier. The HEVC standard defines two tiers: Main and High. Lower tiers are more constrained than higher tiers and lower levels are more constrained than higher levels. ![]() High Efficiency Video Coding tiers and levels are constraints that define a High Efficiency Video Coding (HEVC) bitstream in terms of maximum bit rate, maximum luma sample rate, maximum luma picture size, minimum compression ratio, maximum number of slices allowed, and maximum number of tiles allowed. ![]()
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