[FFmpeg-trac] #5648(ffmpeg:new): ffmpeg cannot recognize (get infomation of) width and hight of flv video stream

[FFmpeg]

#5648: ffmpeg cannot recognize (get infomation of) width and hight of flv video
stream
--------------------------------+---------------------------------------
             Reporter:  orz-    |                     Type:  defect
               Status:  new     |                 Priority:  normal
            Component:  ffmpeg  |                  Version:  unspecified
             Keywords:  flv     |               Blocked By:
             Blocking:          |  Reproduced by developer:  0
Analyzed by developer:  0       |
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 Summary of the bug:
 I am trying to transcode from flv(VP6+mp3) video to mp4(avc+aac-le)
 format,
 with our(saccubus team) mod verison of ffmpeg in Windows OS(7 or 8.1 or
 10).
 I could transcode that kind of flv to mp4 older than n2.8 mod,
 but I cannot transcode now with newer than n2.8.2 version of ffmpeg ,not
 only mod but also original ffmpeg(windows binary of
 https://ffmpeg.zeranoe.com/builds/).

 How to reproduce:
 My trial of latest version is (using mingw_w64-32-i686 + msys2)

 {{{
 % ffmpeg.exe -analyzeduration 30M -probesize 30M -y -i
 flv_width_hight_unrecognizable.flv -threads 0 -s 512x384 -acodec aac -ab
 128k -ar 44100 -ac 2 -vcodec libx264 -crf 23 -b 1400k -bt 2000k -maxrate
 2000k -bufsize 2000k -async 1 -coder 1 -sws_flags lanczos -flags +loop
 -cmp +chroma -partitions +parti4x4+partp8x8+partb8x8 -me_method umh -subq
 8 -me_range 16 -g 250 -keyint_min 25 -sc_threshold 40 -i_qfactor 0.71
 -b_strategy 2 -qcomp 0.6 -qmin 10 -qmax 51 -qdiff 4 -bf 3 -refs 3 -direct-
 pred auto -trellis 1 -weightp 1 -mixed-refs 1 -8x8dct 1 -fast-pskip 1
 -pix_fmt yuv420p output.mp4
  }}}
 #ffmpeg version: 20160614-git-cb46b78-win32

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Ticket URL: <https://trac.ffmpeg.org/ticket/5648>
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