IF '-flags:v gray' THEN '-pass' is ignored

[Bizup]

Summary of the bug:

If the option '-flags:v gray' is specified on the command line, option '-pass' is ignored.

How to reproduce:

% ffmpeg -i foo.dv -flags:v gray -pass [1|2] foo.avi

ffmpeg version 1.0.1

built on Dec  5 2012 21:12:43 with gcc 4.2.1 (GCC) (Apple Inc. build 5666) (dot 3)
configuration: --prefix=/opt/local --enable-swscale --enable-avfilter --enable-libmp3lame --enable-libvorbis --enable-libopus --enable-libtheora --enable-libschroedinger --enable-libopenjpeg --enable-libmodplug --enable-libvpx --enable-libspeex --enable-libfreetype --mandir=/opt/local/share/man --enable-shared --enable-pthreads --cc=/usr/bin/gcc-4.2 --arch=x86_64 --enable-yasm --enable-gpl --enable-postproc --enable-libx264 --enable-libxvid

Patches should be submitted to the ffmpeg-devel mailing list and not this bug tracker.

[cehoyos]

Please add complete, uncut console output together with your command line.

[Bizup]

Replying to cehoyos:

Please add complete, uncut console output together with your command line.

~> ffmpeg -i foo.dv -flags:v gray -pass 2 foo.avi
ffmpeg version 1.0.1 Copyright (c) 2000-2012 the FFmpeg developers
  built on Dec  5 2012 21:12:43 with gcc 4.2.1 (GCC) (Apple Inc. build 5666) (dot 3)
  configuration: --prefix=/opt/local --enable-swscale --enable-avfilter --enable-libmp3lame --enable-libvo
rbis --enable-libopus --enable-libtheora --enable-libschroedinger --enable-libopenjpeg --enable-libmodplug
 --enable-libvpx --enable-libspeex --enable-libfreetype --mandir=/opt/local/share/man --enable-shared --en
able-pthreads --cc=/usr/bin/gcc-4.2 --arch=x86_64 --enable-yasm --enable-gpl --enable-postproc --enable-li
bx264 --enable-libxvid
  libavutil      51. 73.101 / 51. 73.101
  libavcodec     54. 59.100 / 54. 59.100
  libavformat    54. 29.104 / 54. 29.104
  libavdevice    54.  2.101 / 54.  2.101
  libavfilter     3. 17.100 /  3. 17.100
  libswscale      2.  1.101 /  2.  1.101
  libswresample   0. 15.100 /  0. 15.100
  libpostproc    52.  0.100 / 52.  0.100
[dv @ 0x10200f800] Estimating duration from bitrate, this may be inaccurate
Guessed Channel Layout for  Input Stream #0.1 : stereo
Guessed Channel Layout for  Input Stream #0.2 : stereo
Input #0, dv, from 'foo.dv':
  Metadata:
    timecode        : 00:00:01:18
  Duration: 01:23:56.48, start: 0.000000, bitrate: 57600 kb/s
    Stream #0:0: Video: dvvideo, yuv422p, 720x576 [SAR 16:15 DAR 4:3], 57600 kb/s, 25 tbr, 25 tbn, 25 tbc
    Stream #0:1: Audio: pcm_s16le, 48000 Hz, stereo, s16, 1536 kb/s
    Stream #0:2: Audio: pcm_s16le, 48000 Hz, stereo, s16, 1536 kb/s
Output #0, avi, to 'foo.avi':
  Metadata:
    ISMP            : 00:00:01:18
    ISFT            : Lavf54.29.104
    Stream #0:0: Video: mpeg4 (FMP4 / 0x34504D46), yuv420p, 720x576 [SAR 16:15 DAR 4:3], q=2-31, 200 kb/s, 25 tbn, 25 tbc
 25 tbn, 25 tbc
    Stream #0:1: Audio: mp3 (U[0][0][0] / 0x0055), 48000 Hz, stereo, s16
Stream mapping:
  Stream #0:0 -> #0:0 (dvvideo -> mpeg4)
  Stream #0:1 -> #0:1 (pcm_s16le -> libmp3lame)
Press [q] to stop, [?] for help
frame= 1106 fps=145 q=31.0 Lsize=    2197kB time=00:00:44.24 bitrate= 406.8kbits/s
video:1426kB audio:692kB subtitle:0 global headers:0kB muxing overhead 3.751480%
~>

[cehoyos]

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%