id,summary,reporter,owner,description,type,status,priority,component,version,resolution,keywords,cc,blockedby,blocking,reproduced,analyzed
1266,force_key_frames does not work for more than one key frame,shgzs,,"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
",defect,closed,normal,FFmpeg,git-master,fixed,force_key_frames regression,,,,0,0