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9th September 2009, 04:05 | #1 | Link |
Registered User
Join Date: Oct 2007
Posts: 1,060
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Does MBtree affect decoding?
Videos encoded with MBtree seems to have strange seeking. i.e. it would skip in large blocks. Therefore I almost always jump too far, even though I didn't hold the FF key for very long. Videos without MBtree seems to skip to every I frame. The seeking is smooth.
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9th September 2009, 07:12 | #2 | Link |
x264aholic
Join Date: Jul 2007
Location: New York
Posts: 1,752
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MBtree shouldn't affect decoding in any noticeable way.
Have you checked the distribution of I Frames? Are there fewer I's with MBtree on? If so, that could be the cause why.
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13th September 2009, 22:48 | #6 | Link |
Moderator
Join Date: Jan 2006
Location: Portland, OR
Posts: 4,770
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If random access performance isn't good enough, a smaller max GOP duration is probably in order. The default of 250 is pretty darn long. I tend to use 4 second GOPs for most HD content, so 96 frames with 24p.
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