[FFmpeg-trac] #2856(undetermined:new): nuv vp3: seek only to keyframes

[FFmpeg]

#2856: nuv vp3: seek only to keyframes
-------------------------------------+-------------------------------------
               Reporter:  ami_stuff  |                  Owner:
                   Type:  defect     |                 Status:  new
               Priority:  normal     |              Component:
                Version:             |  undetermined
  unspecified                        |               Keywords:
             Blocked By:             |               Blocking:
Reproduced by developer:  0          |  Analyzed by developer:  0
-------------------------------------+-------------------------------------
 http://samples.mplayerhq.hu/nsv/64vp3.nsv

 there are visible artefacts in the output file

 {{{
 C:\>ffmpeg -ss 3 -i 64vp3.nsv -an out.avi
 ffmpeg version N-55393-g3b2e99f Copyright (c) 2000-2013 the FFmpeg
 developers
   built on Aug  8 2013 21:32:57 with gcc 4.7.3 (GCC)
   configuration: --enable-gpl --enable-version3 --disable-w32threads
 --enable-av
 isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls
 --enab
 le-iconv --enable-libass --enable-libbluray --enable-libcaca --enable-
 libfreetyp
 e --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame
 --ena
 ble-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg
 --enable-l
 ibopus --enable-librtmp --enable-libschroedinger --enable-libsoxr
 --enable-libsp
 eex --enable-libtheora --enable-libtwolame --enable-libvo-aacenc --enable-
 libvo-
 amrwbenc --enable-libvorbis --enable-libvpx --enable-libx264 --enable-
 libxavs --
 enable-libxvid --enable-zlib
   libavutil      52. 41.100 / 52. 41.100
   libavcodec     55. 24.100 / 55. 24.100
   libavformat    55. 13.102 / 55. 13.102
   libavdevice    55.  3.100 / 55.  3.100
   libavfilter     3. 82.100 /  3. 82.100
   libswscale      2.  4.100 /  2.  4.100
   libswresample   0. 17.103 /  0. 17.103
   libpostproc    52.  3.100 / 52.  3.100
 C:\64vp3.nsv: could not seek to position 3.000
 Input #0, nsv, from '64vp3.nsv':
   Duration: N/A, start: 0.000000, bitrate: N/A
     Stream #0:0: Video: vp3 (VP31 / 0x31335056), yuv420p, 240x192, 5 tbr,
 5 tbn,
  5 tbc
     Stream #0:1: Audio: mp3 (MP3  / 0x2033504D), 22050 Hz, mono, s16p, 16
 kb/s
 Output #0, avi, to 'out.avi':
   Metadata:
     ISFT            : Lavf55.13.102
     Stream #0:0: Video: mpeg4 (FMP4 / 0x34504D46), yuv420p, 240x192,
 q=2-31, 200
  kb/s, 5 tbn, 5 tbc
 Stream mapping:
   Stream #0:0 -> #0:0 (vp3 -> mpeg4)
 Press [q] to stop, [?] for help
 [vp3 @ 02bb68c0] vp3: first frame not a keyframe
 C:\64vp3.nsv: Operation not permitted
 frame=   90 fps=0.0 q=2.0 Lsize=     477kB time=00:00:57.00 bitrate=
 68.6kbits/
 s
 video:465kB audio:0kB subtitle:0 global headers:0kB muxing overhead
 2.639593%
 }}}

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2856>
FFmpeg <http://ffmpeg.org>
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