[FFmpeg-trac] #4184(ffmpeg:new): No warning is shown if -vf is specified too often.

FFmpeg trac at avcodec.org
Sat Dec 13 12:34:32 CET 2014


#4184: No warning is shown if -vf is specified too often.
--------------------------------------+--------------------------------
               Reporter:  cehoyos     |                  Owner:
                   Type:  defect      |                 Status:  new
               Priority:  minor       |              Component:  ffmpeg
                Version:  git-master  |               Keywords:
             Blocked By:              |               Blocking:
Reproduced by developer:  0           |  Analyzed by developer:  0
--------------------------------------+--------------------------------
 The following works as expected:
 {{{
 $ ffmpeg -i fate-suite/lena.pnm -vf hflip out1.png -vf vflip out2.png
 }}}
 The following should show a warning, some users expect that one filter
 chains' output is used as input for the next filter:
 {{{
 $ ffmpeg -i fate-suite/lena.pnm -vf hflip -vf vflip out.png
 ffmpeg version N-68401-g792a500 Copyright (c) 2000-2014 the FFmpeg
 developers
   built on Dec 13 2014 12:28:49 with gcc 4.7 (SUSE Linux)
   configuration: --enable-gpl
   libavutil      54. 15.100 / 54. 15.100
   libavcodec     56. 14.100 / 56. 14.100
   libavformat    56. 15.104 / 56. 15.104
   libavdevice    56.  3.100 / 56.  3.100
   libavfilter     5.  3.101 /  5.  3.101
   libswscale      3.  1.101 /  3.  1.101
   libswresample   1.  1.100 /  1.  1.100
   libpostproc    53.  3.100 / 53.  3.100
 Input #0, image2, from 'fate-suite/lena.pnm':
   Duration: 00:00:00.04, start: 0.000000, bitrate: 39333 kb/s
     Stream #0:0: Video: ppm, rgb24, 256x256, 25 tbr, 25 tbn, 25 tbc
 Output #0, image2, to 'out.png':
   Metadata:
     encoder         : Lavf56.15.104
     Stream #0:0: Video: png, rgb24, 256x256, q=2-31, 200 kb/s, 25 fps, 25
 tbn, 25 tbc
     Metadata:
       encoder         : Lavc56.14.100 png
 Stream mapping:
   Stream #0:0 -> #0:0 (ppm (native) -> png (native))
 Press [q] to stop, [?] for help
 frame=    1 fps=0.0 q=0.0 Lsize=N/A time=00:00:00.04 bitrate=N/A
 video:177kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB
 muxing overhead: unknown
 }}}

--
Ticket URL: <https://trac.ffmpeg.org/ticket/4184>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker


More information about the FFmpeg-trac mailing list