Igor <[email protected]> added the comment:

This short asf file is a header from mms stream.

Before 20618 ffmpeg ->

bash-3.2# ffmpeg -i ./template_252 
FFmpeg version SVN-r20618, Copyright (c) 2000-2009 Fabrice Bellard, et al.
  built on Nov 28 2009 15:27:52 with gcc 4.2.1 (Apple Inc. build 5646) (dot 1)
  configuration: --prefix=/opt/local/ --arch=x86_64 --prefix=/usr/local
--enable-avfilter --disable-debug --enable-avfilter --disable-ffserver
--enable-ffplay --enable-memalign-hack --enable-postproc --enable-gpl
--enable-shared --mandir=/usr/local/man --enable-libxvid --enable-libfaac
--enable-libfaad --enable-libfaadbin --enable-libopencore-amrwb
--enable-version3 --enable-libopencore-amrnb --enable-nonfree --disable-libgsm
--enable-libmp3lame --disable-ffplay --enable-libtheora --enable-libvorbis
--enable-libxvid --extra-cflags=-I/opt/local/include/
--extra-ldflags=-L/opt/local/lib --disable-devices --enable-network
  libavutil     50. 5. 0 / 50. 5. 0
  libavcodec    52.42. 0 / 52.42. 0
  libavformat   52.39. 2 / 52.39. 2
  libavdevice   52. 2. 0 / 52. 2. 0
  libavfilter    1.11. 0 /  1.11. 0
  libswscale     0. 7. 2 /  0. 7. 2
  libpostproc   51. 2. 0 / 51. 2. 0
[asf @ 0x10180b010]Could not find codec parameters (Video: wmv3, 320x180, 220 
kb/s)
Input #0, asf, from './template_252':
  Duration: 00:00:00.16, bitrate: 252 kb/s
    Stream #0.0(eng): Audio: wmav2, 44100 Hz, 1 channels, s16, 32 kb/s
    Stream #0.1(eng): Video: wmv3, 320x180, 220 kb/s, 1k tbr, 1k tbn, 1k tbc
  Metadata
    title           : Sky News
    author          : BSkyB
    copyright       : BSkyB
    comment         : 
    WMFSDKVersion   : 11.0.5721.5145
    WMFSDKNeeded    : 0.0.0.0000
    IsVBR           : 0
At least one output file must be specified

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<https://roundup.ffmpeg.org/roundup/ffmpeg/issue1575>
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