[FFmpeg-trac] #1521(avformat:open): Seek does not work on a asf file.

[FFmpeg]

#1521: Seek does not work on a asf file.
------------------------------------+------------------------------------
             Reporter:  dongwon     |                    Owner:
                 Type:  defect      |                   Status:  open
             Priority:  normal      |                Component:  avformat
              Version:  git-master  |               Resolution:
             Keywords:  asf seek    |               Blocked By:
             Blocking:              |  Reproduced by developer:  1
Analyzed by developer:  0           |
------------------------------------+------------------------------------
Changes (by cehoyos):

 * keywords:  asf,seek => asf seek
 * status:  new => open
 * reproduced:  0 => 1


Comment:

 For future bug reports: Please always add a command line together with
 complete, uncut console output

 Seeking works, but not as expected:
 With ffplay and mplayer -demuxer lavf, the only reachable times are (0:00
 and) 0:15 and 3:22 (except if the first forward seek is later than 16
 seconds into the stream).
 mplayer -demuxer asf seeks fine, there are enough I-frames in the stream.
 {{{
 $ ffplay seek_does_not_work.asf
 ffplay version N-42404-gb4d0c3d Copyright (c) 2003-2012 the FFmpeg
 developers
   built on Jul 10 2012 09:31:25 with gcc 4.3.2
   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
   libavutil      51. 64.100 / 51. 64.100
   libavcodec     54. 33.100 / 54. 33.100
   libavformat    54. 15.104 / 54. 15.104
   libavdevice    54.  1.100 / 54.  1.100
   libavfilter     3.  2.100 /  3.  2.100
   libswscale      2.  1.100 /  2.  1.100
   libswresample   0. 15.100 /  0. 15.100
   libpostproc    52.  0.100 / 52.  0.100
 [wmv3 @ 0x90725c0] Extra data: 8 bits left, value: 0
 Input #0, asf, from 'seek_does_not_work.asf':
   Metadata:
     WMFSDKVersion   : 11.0.5721.5251
     WMFSDKNeeded    : 0.0.0.0000
     IsVBR           : 0
   Duration: 00:03:27.16, start: 0.000000, bitrate: 935 kb/s
     Stream #0:0: Audio: wmav2 (a[1][0][0] / 0x0161), 44100 Hz, 2 channels,
 s16, 128 kb/s
     Stream #0:1: Video: wmv3 (Main) (WMV3 / 0x33564D57), yuv420p, 512x384,
 800 kb/s, SAR 1:1 DAR 4:3, 29.97 tbr, 1k tbn, 1k tbc
 [wmv3 @ 0x90725c0] Extra data: 8 bits left, value: 0
 Frame changed from size:0x0 to size:512x384B vq=  183KB sq=    0B f=0/0
 [ffplay_buffer @ 0x90c8c60] w:512 h:384 pixfmt:yuv420p tb:1/1000 fr:0/1
 sar:0/1 sws_param:
 [asf @ 0x906afe0] asf_read_pts failedB vq=  284KB sq=    0B f=0/0   f=0/0
     Last message repeated 3 times
 [asf @ 0x906afe0] freeing incomplete packet size 1479, new 6289
 [asf @ 0x906afe0] asf_read_pts failed
 [asf @ 0x906afe0] ignoring invalid packet_obj_size (821 2734 2734 5031)
 [asf @ 0x906afe0] freeing incomplete packet size 5031, new 4747
 [asf @ 0x906afe0] asf_read_pts failed
 [asf @ 0x906afe0] ignoring invalid packet_obj_size (2608 850 850 3897)
 [asf @ 0x906afe0] freeing incomplete packet size 3897, new 7871
 [asf @ 0x906afe0] asf_read_pts failed
 [asf @ 0x906afe0] freeing incomplete packet size 2951, new 3758
 [asf @ 0x906afe0] asf_read_pts failed
 [asf @ 0x906afe0] ignoring invalid packet_obj_size (13124 2191 2191 18427)
 [asf @ 0x906afe0] ignoring invalid packet_obj_size (15315 574 3357 18427)
 [asf @ 0x906afe0] freeing incomplete packet size 18427, new 3357
 [asf @ 0x906afe0] freeing incomplete packet size 3357, new 7060
 [asf @ 0x906afe0] asf_read_pts failed
 [asf @ 0x906afe0] freeing incomplete packet size 3297, new 3039
 [asf @ 0x906afe0] ignoring invalid packet_obj_size (13124 2191 2191 18427)
 [asf @ 0x906afe0] ignoring invalid packet_obj_size (15315 574 3357 18427)
 [asf @ 0x906afe0] freeing incomplete packet size 18427, new 3357
 [asf @ 0x906afe0] freeing incomplete packet size 3357, new 7060
 [asf @ 0x906afe0] asf_read_pts failed
 [asf @ 0x906afe0] freeing incomplete packet size 5726, new 1927
 [asf @ 0x906afe0] freeing incomplete packet size 3429, new 3296
 [asf @ 0x906afe0] ignoring invalid packet_obj_size (10657 3031 3031 17027)
 [asf @ 0x906afe0] ignoring invalid packet_obj_size (13688 2201 2870 17027)
 [asf @ 0x906afe0] ignoring invalid packet_obj_size (15889 669 2870 17027)
 [asf @ 0x906afe0] freeing incomplete packet size 17027, new 1111
 [asf @ 0x906afe0] freeing incomplete packet size 2843, new 1068
 [asf @ 0x906afe0] ignoring invalid packet_obj_size (565 2055 2055 3239)
 [asf @ 0x906afe0] freeing incomplete packet size 3239, new 18427
  203.75 A-V: -0.018 fd=   1 aq=   35KB vq=  228KB sq=    0B f=0/0
 }}}

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/1521#comment:2>
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