Please remember to only report problems for ffplay if they are not reproducible with ffmpeg (and that means that whenever a ticket for ffplay is reported, some implicit or explicit reason is needed why the ticket is not reported for ffmpeg). The two reasons are that bugs are much more difficult to reproduce with ffplay and that ffplay depends on an external library that is known to contain bugs.
$ ffmpeg -ss 8 -i bad_seek_wmv2.wmv out.png
ffmpeg version N-43291-gcf753d5 Copyright (c) 2000-2012 the FFmpeg developers
built on Aug 7 2012 07:51:32 with gcc 4.3.2 (GCC)
configuration: --cc=/usr/local/gcc-4.3.2/bin/gcc --enable-gpl --enable-libopenjpeg --enable-libvorbis --enable-libspeex --enable-libmp3lame --enable-libtheora --extra-ldflags=-lm --enable-libvpx --enable-libxavs --enable-x11grab --enable-libass --enable-nonfree --enable-libfaac --enable-libopus --enable-libfdk-aac
libavutil 51. 66.101 / 51. 66.101
libavcodec 54. 50.100 / 54. 50.100
libavformat 54. 22.101 / 54. 22.101
libavdevice 54. 2.100 / 54. 2.100
libavfilter 3. 5.102 / 3. 5.102
libswscale 2. 1.101 / 2. 1.101
libswresample 0. 15.100 / 0. 15.100
libpostproc 52. 0.100 / 52. 0.100
Guessed Channel Layout for Input Stream #0.0 : mono
Input #0, asf, from 'bad_seek_wmv2.wmv':
Metadata:
title : CreaToon 3
artist : ANIMANTE BALEARES S.L.
copyright : ANIMANTE BALEARES S.L. 2004
WMFSDKVersion : 9.00.00.2980
WMFSDKNeeded : 0.0.0.0000
IsVBR : 0
Duration: 00:00:42.23, start: 0.000000, bitrate: 664 kb/s
Stream #0:0(spa): Audio: wmav2 (a[1][0][0] / 0x0161), 44100 Hz, mono, s16, 20 kb/s
Stream #0:1(spa): Video: wmv2 (WMV2 / 0x32564D57), yuv420p, 640x480, 671 kb/s, 25 tbr, 1k tbn, 1k tbc
Output #0, image2, to 'out.png':
Metadata:
title : CreaToon 3
artist : ANIMANTE BALEARES S.L.
copyright : ANIMANTE BALEARES S.L. 2004
WMFSDKVersion : 9.00.00.2980
WMFSDKNeeded : 0.0.0.0000
IsVBR : 0
encoder : Lavf54.22.101
Stream #0:0(spa): Video: png, rgb24, 640x480, q=2-31, 200 kb/s, 90k tbn, 25 tbc
Stream mapping:
Stream #0:1 -> #0:0 (wmv2 -> png)
Press [q] to stop, [?] for help
[asf @ 0x9115500] ignoring invalid packet_obj_size (15 116 116 310)
[asf @ 0x9115500] freeing incomplete packet size 310, new 1580
[wmv2 @ 0x911c7c0] warning: first frame is no keyframe
[image2 @ 0x910f960] Could not get frame filename number 2 from pattern 'out.png'
av_interleaved_write_frame(): Invalid argument
