[Libav-user] failed to open a flash screen video

[黄轩宇]

Hi Guys

I'm using FFmpeg 1.1.3 and had a problem in opening a flash sc video.

av_open_input_file succeeded but avformat_find_stream_info returns -1.

FFmpeg output blow logs:

00:00:16.115  MAIN  FFMPEG: Format flv probed with size=2048 and score=100

00:00:18.221  MAIN  FFMPEG: File position before
avformat_find_stream_info() is 13

00:00:18.284  MAIN  FFMPEG: Could not find codec parameters for stream 0
(Video: flashsv): unspecified size
Consider increasing the value for the 'analyzeduration' and 'probesize'
options

00:00:18.284  MAIN  FFMPEG: File position after avformat_find_stream_info()
is 1263968

video link is here: https://dl.dropbox.com/u/89678527/flash-screen.flv
and ffprobe output was

$ ffprobe.exe flash-screen.flv
ffprobe version N-50025-gb8bb661 Copyright (c) 2007-2013 the FFmpeg
developers
  built on Feb 17 2013 02:37:45 with gcc 4.7.2 (GCC)
  configuration: --enable-gpl --enable-version3 --disable-w32threads
--enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r
--enable-gnutls --enable-libass --enable-libbluray --enable-libcaca
--enable-libfreetype --enable-libgsm --enable-libmp3lame
--enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg
--enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsoxr
--enable-libspeex --enable-libtheora --enable-libtwolame
--enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis
--enable-libvpx --enable-libx264 --enable-libxavs --enable-libxvid
--enable-zlib
  libavutil      52. 17.101 / 52. 17.101
  libavcodec     54. 91.103 / 54. 91.103
  libavformat    54. 63.100 / 54. 63.100
  libavdevice    54.  3.103 / 54.  3.103
  libavfilter     3. 38.100 /  3. 38.100
  libswscale      2.  2.100 /  2.  2.100
  libswresample   0. 17.102 /  0. 17.102
  libpostproc    52.  2.100 / 52.  2.100
Input #0, flv, from 'flash-screen.flv':
  Duration: 00:00:25.97, start: 0.000000, bitrate: 389 kb/s
    Stream #0:0: Video: flashsv, bgr24, 466x311, 3 tbr, 1k tbn, 1k tbc

and ffplay can play the video successfully (ffprobe and ffplay were
downloaded Zeranoe build and FFmpeg 1.1.3 was build by myself)

Great thanks for any help
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