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14th April 2014, 22:18 | #1 | Link |
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Maximum buffer size in HEVC per profile/level?
I am having a hard time finding a definitive reference for the max buffer size (VBV/HRD) for different different HEVC profiles and levels.
I can kinda squint to see how I could figure it out from the spec, but I'm not the world's best spec->parameter translator ? Has anyone done this already? Given that Main/Main 10 lowered the max bitrate a lot from H.264, I imagine that buffer sizes may have seen a similar (proportional?) reduction. I want to make ensure I'm making spec-compliant test streams. And have a public reference everyone can clearly see for setting their --vbv-bufsize or similar parameters |
14th April 2014, 22:27 | #2 | Link | |
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14th April 2014, 22:35 | #3 | Link | |
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As I warned, reading specs isn't my strong suit . Thanks! |
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17th April 2014, 22:31 | #6 | Link |
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It is interesting that the buffers for Main Tier are so much lower than for H.264 - HEVC Level 5 is less than H.264 Level 4! Presumably this is to constrain worst-case decoder complexity. And HEVC certainly should be able to get away with a lot less VBV.
Anyone have any sense for whether many real-world decoders will be constrained to Main Tier, or if High Tier is going to be ubiquitous? |
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buffer underflow, vbv, x265 |
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