[FFmpeg-trac] #1266(FFmpeg:new): force_key_frames does not work for more than one key frame

[FFmpeg]

#1266: force_key_frames does not work for more than one key frame
-------------------------------------+-------------------------------------
             Reporter:  shgzs        |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:  FFmpeg       |                  Version:
             Keywords:               |  unspecified
  force_key_frame keyframe           |               Blocked By:
  seekpoint                          |  Reproduced by developer:  0
             Blocking:               |
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 hi
 I'm new to ffmpeg
 I want to convert user-uploaded videos to mp4, to be played later via a
 online flash-based media player. so to add some seek-point, I use
 force_key_frames in this way:
 (I use 32bit windows static builds)
 ffmpeg -i input.mp4 -force_key_frames 1,2,3,4,5 output.mp4

 it was ok until build "FFmpeg git-9849515 32-bit Static" dated 2012-04-21
 , but next two builds (i.e. git-3bbf3f7 on 2012-04-24 and git-a4b58fd on
 2012-04-26) produce this error:

 "Invalid duration specification for force_key_frames: 1,2,3,4,5"

 there is no error when I use just one point (e.g. -force_key_frames
 00:00:01 ), also I tried 64bit build and same error in last two builds was
 encountered.

 - is this a bug or something has changed about parameter entry format?
 - is there a better way to make video "scroll-able"?




 and this is full output with error in last line:
 ---------------------------------------------------
 ffmpeg version N-40092-g3bbf3f7 Copyright (c) 2000-2012 the FFmpeg
 developers
   built on Apr 24 2012 00:55:38 with gcc 4.6.3
   configuration: --enable-gpl --enable-version3 --disable-w32threads
 --enable-ru
 ntime-cpudetect --enable-avisynth --enable-bzlib --enable-frei0r --enable-
 libass
  --enable-libcelt --enable-libopencore-amrnb --enable-libopencore-amrwb
 --enable
 -libfreetype --enable-libgsm --enable-libmp3lame --enable-libnut --enable-
 libope
 njpeg --enable-librtmp --enable-libschroedinger --enable-libspeex
 --enable-libth
 eora --enable-libutvideo --enable-libvo-aacenc --enable-libvo-amrwbenc
 --enable-
 libvorbis --enable-libvpx --enable-libx264 --enable-libxavs --enable-
 libxvid --e
 nable-zlib
   libavutil      51. 47.100 / 51. 47.100
   libavcodec     54. 15.100 / 54. 15.100
   libavformat    54.  3.100 / 54.  3.100
   libavdevice    53.  4.100 / 53.  4.100
   libavfilter     2. 72.100 /  2. 72.100
   libswscale      2.  1.100 /  2.  1.100
   libswresample   0. 11.100 /  0. 11.100
   libpostproc    52.  0.100 / 52.  0.100
 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'input.mp4':
   Metadata:
     major_brand     : FACE
     minor_version   : 1337
     compatible_brands: isomavc1FACE
     creation_time   : 2011-07-26 19:43:30
   Duration: 00:01:36.26, start: 0.000000, bitrate: 260 kb/s
     Stream #0:0(und): Video: h264 (Constrained Baseline) (avc1 /
 0x31637661), yu
 v420p, 400x300 [SAR 1:1 DAR 4:3], 182 kb/s, 17.33 fps, 17.33 tbr, 17330
 tbn, 34.
 66 tbc
     Metadata:
       creation_time   : 2011-07-26 19:43:30
       handler_name    : GPAC ISO Video Handler
     Stream #0:1(und): Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo,
 s16, 77
 kb/s
     Metadata:
       creation_time   : 2011-07-26 19:43:30
       handler_name    : GPAC ISO Audio Handler
 Invalid duration specification for force_key_frames: 1,2,3,4,5

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/1266>
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