[FFmpeg-trac] #2154(FFmpeg:open): IF '-flags:v gray' THEN '-pass' is ignored

[FFmpeg]

#2154: IF '-flags:v gray' THEN '-pass' is ignored
-------------------------------------+-------------------------------------
             Reporter:  Bizup        |                    Owner:
                 Type:  defect       |                   Status:  open
             Priority:  important    |                Component:  FFmpeg
              Version:  git-master   |               Resolution:
             Keywords:  gray         |               Blocked By:
  ratecontrol regression             |  Reproduced by developer:  1
             Blocking:               |
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
Changes (by cehoyos):

 * keywords:  multipass gray => gray ratecontrol regression
 * priority:  normal => important
 * version:  1.0.1 => git-master
 * status:  new => open
 * reproduced:  0 => 1


Comment:

 The log file ffmpeg2pass-0.log is empty after the first pass, this is a
 regression since 5dc6bd8 / bf174a7.
 {{{
 $ ffmpeg -i fate-suite/svq3/Vertical400kbit.sorenson3.mov -flags gray -an
 -vb 100k -pass 1 out.avi
 ffmpeg version N-49005-g44d5a28 Copyright (c) 2000-2013 the FFmpeg
 developers
   built on Jan 18 2013 20:45:11 with gcc 4.7 (SUSE Linux)
   configuration: --enable-gpl --disable-indev=jack
   libavutil      52. 15.100 / 52. 15.100
   libavcodec     54. 89.100 / 54. 89.100
   libavformat    54. 61.100 / 54. 61.100
   libavdevice    54.  3.102 / 54.  3.102
   libavfilter     3. 32.100 /  3. 32.100
   libswscale      2.  1.103 /  2.  1.103
   libswresample   0. 17.102 /  0. 17.102
   libpostproc    52.  2.100 / 52.  2.100
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x3497060] max_analyze_duration 5000000 reached
 at 5000998 microseconds
 Guessed Channel Layout for  Input Stream #0.1 : mono
 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'fate-
 suite/svq3/Vertical400kbit.sorenson3.mov':
   Metadata:
     creation_time   : 2001-03-20 16:17:18
     title           : Vertical Online SV3 Demo
     title-eng       : Vertical Online SV3 Demo
     artist          : Logan Kelsey
     artist-eng      : Logan Kelsey
     copyright       : © Vertical Online 2001
     copyright-eng   : © Vertical Online 2001
     encoder         : Sorenson Video 3
     encoder-eng     : Sorenson Video 3
   Duration: 00:00:43.58, start: 0.000000, bitrate: 580 kb/s
     Stream #0:0(eng): Video: svq3 (SVQ3 / 0x33515653), yuvj420p, 320x240,
 391 kb/s, 30.02 fps, 30 tbr, 600 tbn, 600 tbc
     Metadata:
       creation_time   : 2001-03-20 16:17:18
       handler_name    : Apple Alias Data Handler
     Stream #0:1(eng): Audio: adpcm_ima_qt (ima4 / 0x34616D69), 44100 Hz,
 mono, s16p, 176 kb/s
     Metadata:
       creation_time   : 2001-03-20 16:17:18
       handler_name    : Apple Alias Data Handler
 Output #0, avi, to 'out.avi':
   Metadata:
     encoder-eng     : Sorenson Video 3
     INAM            : Vertical Online SV3 Demo
     title-eng       : Vertical Online SV3 Demo
     IART            : Logan Kelsey
     artist-eng      : Logan Kelsey
     ICOP            : © Vertical Online 2001
     copyright-eng   : © Vertical Online 2001
     ISFT            : Lavf54.61.100
     Stream #0:0(eng): Video: mpeg4 (FMP4 / 0x34504D46), yuv420p, 320x240,
 q=2-31, 100 kb/s, 30 tbn, 30 tbc
     Metadata:
       creation_time   : 2001-03-20 16:17:18
       handler_name    : Apple Alias Data Handler
 Stream mapping:
   Stream #0:0 -> #0:0 (svq3 -> mpeg4)
 Press [q] to stop, [?] for help
 frame= 1308 fps=0.0 q=5.2 Lsize=     671kB time=00:00:43.60 bitrate=
 126.1kbits/s
 video:634kB audio:0kB subtitle:0 global headers:0kB muxing overhead
 5.827027%
 }}}

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2154#comment:3>
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