[FFmpeg-trac] #1143(undetermined:new): Timecode skipped in drawtext filter

FFmpeg trac at avcodec.org
Wed Mar 28 18:06:36 CEST 2012


#1143: Timecode skipped in drawtext filter
-------------------------------------+-------------------------------------
             Reporter:  rmk          |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:               |                  Version:
  undetermined                       |  unspecified
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 when transcoding a certain file from the apple trailers section, I get
 strange behaviour with the drawtext filter in that the timecode
 00:00:00:01 stays for two frames and then everything appears to be normal.
 I haven't been able to reproduce this with another file but this one:

 http://trailers.apple.com/movies/dreamworks/megamind/megamind-
 tlr2_h480p.mov

 here's the command line and output:

 ffmpeg -i Megamind.mov -t 10 -vcodec mpeg4 -acodec copy -vf
 drawtext="fontfile=/System/Library/Fonts/HelveticaLight.ttf:timecode='00\\:00\\:00\\:00':rate=24:x=10:y=60-descent:fontsize=24:fontcolor=white"
 -qscale 1 -y drawtexttest-megamind-net.mov

 ffmpeg version N-39366-g247fbf0 Copyright (c) 2000-2012 the FFmpeg
 developers
   built on Mar 28 2012 17:12:08 with gcc 4.2.1 (Apple Inc. build 5664)
   configuration: --enable-gpl --enable-libfreetype
   libavutil      51. 44.100 / 51. 44.100
   libavcodec     54. 12.100 / 54. 12.100
   libavformat    54.  3.100 / 54.  3.100
   libavdevice    53.  4.100 / 53.  4.100
   libavfilter     2. 66.101 /  2. 66.101
   libswscale      2.  1.100 /  2.  1.100
   libswresample   0. 10.100 /  0. 10.100
   libpostproc    52.  0.100 / 52.  0.100
 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from
 '/Users/krueger/Documents/Megamind.mov':
   Metadata:
     major_brand     : qt
     minor_version   : 537199360
     compatible_brands: qt
     creation_time   : 2012-03-28 15:59:28
     comment         : Encoded and delivered by apple.com/trailers/
     comment-eng     : Encoded and delivered by apple.com/trailers/
     copyright       : © 2010 Dreamworks Pictures. All Rights Reserved
     copyright-eng   : © 2010 Dreamworks Pictures. All Rights Reserved
     title           : Megamind
     title-eng       : Megamind
   Duration: 00:02:29.50, start: 0.000000, bitrate: 2344 kb/s
     Stream #0:0(eng): Video: h264 (Main) (avc1 / 0x31637661), yuv420p,
 848x352, 2209 kb/s, 24 fps, 24 tbr, 2400 tbn, 4800 tbc
     Metadata:
       creation_time   : 2012-03-28 15:59:28
       handler_name    : ?Apple Alias Data Handler
     Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 48000 Hz, stereo,
 s16, 131 kb/s
     Metadata:
       creation_time   : 2012-03-28 15:59:28
       handler_name    : ?Apple Alias Data Handler
     Stream #0:2(eng): Data: none (tmcd / 0x64636D74)
     Metadata:
       creation_time   : 2012-03-28 15:59:28
       handler_name    : ?Apple Alias Data Handler
       timecode        : 00:00:00:00
 Please use -q:a or -q:v, -qscale is ambiguous
 [buffer @ 0x101013060] w:848 h:352 pixfmt:yuv420p tb:1/1000000 sar:0/1
 sws_param:
 Output #0, mov, to 'drawtexttest-megamind-net.mov':
   Metadata:
     major_brand     : qt
     minor_version   : 537199360
     compatible_brands: qt
     creation_time   : 2012-03-28 15:59:28
     comment         : Encoded and delivered by apple.com/trailers/
     comment-eng     : Encoded and delivered by apple.com/trailers/
     copyright       : © 2010 Dreamworks Pictures. All Rights Reserved
     copyright-eng   : © 2010 Dreamworks Pictures. All Rights Reserved
     title           : Megamind
     title-eng       : Megamind
     encoder         : Lavf54.3.100
     Stream #0:0(eng): Video: mpeg4 (mp4v / 0x7634706D), yuv420p, 848x352,
 q=2-31, 200 kb/s, 24 tbn, 24 tbc
     Metadata:
       creation_time   : 2012-03-28 15:59:28
       handler_name    : ?Apple Alias Data Handler
     Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 48000 Hz, stereo,
 131 kb/s
     Metadata:
       creation_time   : 2012-03-28 15:59:28
       handler_name    : ?Apple Alias Data Handler
 Stream mapping:
   Stream #0:0 -> #0:0 (h264 -> mpeg4)
   Stream #0:1 -> #0:1 (copy)
 Press [q] to stop, [?] for help
 [h264 @ 0x1020bd600] Increasing reorder buffer to 1
 frame=  240 fps=0.0 q=1.0 Lsize=    3115kB time=00:00:10.00
 bitrate=2552.2kbits/s dup=1 drop=0
 video:2983kB audio:126kB global headers:0kB muxing overhead 0.207059%

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/1143>
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