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Old 11th April 2022, 15:13   #8  |  Link
nevcairiel
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Join Date: Mar 2010
Location: Hamburg/Germany
Posts: 10,342
Level 6 is generally not well supported in hardware due to DPB limits - assuming they use a hardware decoder for acceleration, which is certainly a likely scenario.

Generally, that many ref frames are often not very beneficial, and for >1080p you might also benefit from using newer codecs.
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