[FFmpeg-trac] #4643(undetermined:new): Multiple "Past duration 0.XXXXXX too large" and "dup=0 drop=1" messages when reencoding a H.264 source to x264

FFmpeg trac at avcodec.org
Sat Jun 20 09:08:03 CEST 2015


#4643: Multiple "Past duration 0.XXXXXX too large" and "dup=0 drop=1" messages
when reencoding a H.264 source to x264
--------------------------------+----------------------------------------
             Reporter:  birdie  |                    Owner:
                 Type:  defect  |                   Status:  new
             Priority:  normal  |                Component:  undetermined
              Version:  2.7     |               Resolution:
             Keywords:          |               Blocked By:
             Blocking:          |  Reproduced by developer:  0
Analyzed by developer:  0       |
--------------------------------+----------------------------------------

Comment (by birdie):

 Encoded video:

 Duration: 00:20:54.19, start: 0.000000, bitrate: 3339 kb/s
   Stream #0:0(eng): Video: h264 (High), yuv420p, 1920x1080 [SAR 1:1 DAR
 16:9], 29.83 fps, 29.83 tbr, 1k tbn, 59.67 tbc (default)
 Or: 27411 frames.

 Source video:
   Duration: 00:20:54.19, start: 0.000000, bitrate: 17098 kb/s
     Stream #0:0(eng): Video: h264 (Baseline) (avc1 / 0x31637661), yuv420p,
 1920x1080, 17000 kb/s, SAR 1:1 DAR 16:9, 29.85 fps, 29.83 tbr, 90ktbn,
 180k tbc (default)
 Or: 37429 frames

 Actually just 18 frames have been lost during encoding but it's still not
 very pleasant 'cause it's not clear why the frames were dismissed.

--
Ticket URL: <https://trac.ffmpeg.org/ticket/4643#comment:9>
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