[Libav-user] Duplicate frames?

David R Robison drrobison at openroadsconsulting.com
Fri Dec 7 00:35:21 CET 2012


I am having a problem with poor quality of H.264 video. I've turned on 
some debugging and I'm getting the following output from within 
decode_slice_header in h264.c

[8288] slice:1 T mb:0 P fix pps:0 frame:23 poc:65582/2147483647/65582 
ref:1/1 qp:24 loop:1:0:0 weight:0
[8288] slice:1 B mb:0 P fix pps:0 frame:23 poc:65582/65583/65582 ref:1/1 
qp:24 loop:1:0:0 weight:0
[8288] slice:1 T mb:0 P fix pps:0 frame:24 poc:65584/2147483647/65584 
ref:1/1 qp:24 loop:1:0:0 weight:0
[8288] slice:1 T mb:0 P fix pps:0 frame:24 poc:65584/2147483647/65584 
ref:1/1 qp:24 loop:1:0:0 weight:0
[8288] mmco: unref short failure
[8288] mmco: unref short failure

I've added the current POC at the end of POC[0] and POC[1]. Am I correct 
in assuming that the last two slices are the same slice being processed 
twice?
David

-- 

David R Robison
Open Roads Consulting, Inc.
103 Watson Road, Chesapeake, VA 23320
phone: (757) 546-3401
e-mail: drrobison at openroadsconsulting.com
web: http://openroadsconsulting.com
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