[FFmpeg-trac] #2532(avcodec:open): wmv1: green artefacts with lowres

FFmpeg trac at avcodec.org
Sun May 5 00:29:57 CEST 2013


#2532: wmv1: green artefacts with lowres
-------------------------------------+-----------------------------------
             Reporter:  ami_stuff    |                    Owner:
                 Type:  defect       |                   Status:  open
             Priority:  normal       |                Component:  avcodec
              Version:  git-master   |               Resolution:
             Keywords:  wmv1 lowres  |               Blocked By:
             Blocking:               |  Reproduced by developer:  1
Analyzed by developer:  0            |
-------------------------------------+-----------------------------------
Changes (by cehoyos):

 * keywords:   => wmv1 lowres
 * status:  new => open
 * version:  unspecified => git-master
 * component:  undetermined => avcodec
 * reproduced:  0 => 1


Comment:

 {{{
 $ valgrind ./ffmpeg_g -vlowres 1 -i 1.wmv -f null -
 ==12016== Memcheck, a memory error detector.
 ==12016== Copyright (C) 2002-2007, and GNU GPL'd, by Julian Seward et al.
 ==12016== Using LibVEX rev 1854, a library for dynamic binary translation.
 ==12016== Copyright (C) 2004-2007, and GNU GPL'd, by OpenWorks LLP.
 ==12016== Using valgrind-3.3.1, a dynamic binary instrumentation
 framework.
 ==12016== Copyright (C) 2000-2007, and GNU GPL'd, by Julian Seward et al.
 ==12016== For more details, rerun with: -v
 ==12016==
 ffmpeg version N-52736-gd18341f Copyright (c) 2000-2013 the FFmpeg
 developers
   built on May  4 2013 13:41:21 with gcc 4.3 (SUSE Linux)
   configuration: --enable-gpl --disable-optimizations
   libavutil      52. 28.100 / 52. 28.100
   libavcodec     55.  7.100 / 55.  7.100
   libavformat    55.  4.101 / 55.  4.101
   libavdevice    55.  0.100 / 55.  0.100
   libavfilter     3. 63.101 /  3. 63.101
   libswscale      2.  2.100 /  2.  2.100
   libswresample   0. 17.102 /  0. 17.102
   libpostproc    52.  3.100 / 52.  3.100
 Guessed Channel Layout for  Input Stream #0.0 : stereo
 Input #0, asf, from '1.wmv':
   Metadata:
     WMFSDKVersion   : 11.0.5721.5275
     WMFSDKNeeded    : 0.0.0.0000
     IsVBR           : 0
     DeviceConformanceTemplate: @
   Duration: 00:00:05.98, start: 0.000000, bitrate: 246 kb/s
     Stream #0:0(pol): Audio: wmav2 (a[1][0][0] / 0x0161), 44100 Hz,
 stereo, fltp, 176 kb/s
     Stream #0:1(pol): Video: wmv1 (WMV1 / 0x31564D57), yuv420p, 80x60, 100
 kb/s, 24 tbr, 1k tbn, 1k tbc
 Output #0, null, to 'pipe:':
   Metadata:
     WMFSDKVersion   : 11.0.5721.5275
     WMFSDKNeeded    : 0.0.0.0000
     IsVBR           : 0
     DeviceConformanceTemplate: @
     encoder         : Lavf55.4.101
     Stream #0:0(pol): Video: rawvideo (I420 / 0x30323449), yuv420p, 80x60,
 q=2-31, 200 kb/s, 90k tbn, 24 tbc
     Stream #0:1(pol): Audio: pcm_s16le, 44100 Hz, stereo, s16, 1411 kb/s
 Stream mapping:
   Stream #0:1 -> #0:0 (wmv1 -> rawvideo)
   Stream #0:0 -> #0:1 (wmav2 -> pcm_s16le)
 Press [q] to stop, [?] for help
 [null @ 0x4587800] Encoder did not produce proper pts, making some up.
 frame=   28 fps= 21 q=0.0 size=N/A time=00:00:01.34 bitrate=N/A dup=10
 drop=0   frame=   50 fps= 27 q=0.0 size=N/A time=00:00:02.72 bitrate=N/A
 dup=10 drop=0   frame=   74 fps= 31 q=0.0 size=N/A time=00:00:03.42
 bitrate=N/A dup=10 drop=0   dc overflow- block: 4 qscale: 4//
 [wmv1 @ 0x446d020] dc overflow- block: 2 qscale: 4//
     Last message repeated 1 times
 [wmv1 @ 0x446d020] dc overflow- block: 3 qscale: 4//
 [wmv1 @ 0x446d020] dc overflow- block: 0 qscale: 4//
 ==12016== Invalid read of size 1
 ==12016==    at 0x87F2AD8: get_dc (msmpeg4.c:186)
 ==12016==    by 0x87F2E7A: ff_msmpeg4_pred_dc (msmpeg4.c:288)
 ==12016==    by 0x855C933: msmpeg4_decode_dc (msmpeg4dec.c:622)
 ==12016==    by 0x855CA1F: ff_msmpeg4_decode_block (msmpeg4dec.c:651)
 ==12016==    by 0x855A240: msmpeg4v34_decode_mb (msmpeg4dec.c:275)
 ==12016==    by 0x83199DD: decode_slice (h263dec.c:226)
 ==12016==    by 0x831B1DE: ff_h263_decode_frame (h263dec.c:685)
 ==12016==    by 0x863DE4A: avcodec_decode_video2 (utils.c:1933)
 ==12016==    by 0x805F1C1: decode_video (ffmpeg.c:1640)
 ==12016==    by 0x80600D6: output_packet (ffmpeg.c:1836)
 ==12016==    by 0x8065E7D: process_input (ffmpeg.c:3042)
 ==12016==    by 0x80661AD: transcode_step (ffmpeg.c:3138)
 ==12016==  Address 0x46f1ca8 is not stack'd, malloc'd or (recently) free'd
     Last message repeated 1 times
 [wmv1 @ 0x446d020] dc overflow- block: 1 qscale: 4//
 [wmv1 @ 0x446d020] dc overflow- block: 3 qscale: 4//
 [wmv1 @ 0x446d020] dc overflow- block: 2 qscale: 4//
 [wmv1 @ 0x446d020] dc overflow- block: 3 qscale: 4//
 ==12016==
 ==12016== Invalid read of size 1
 ==12016==    at 0x87F2AD8: get_dc (msmpeg4.c:186)
 ==12016==    by 0x87F2ED1: ff_msmpeg4_pred_dc (msmpeg4.c:290)
 ==12016==    by 0x855C933: msmpeg4_decode_dc (msmpeg4dec.c:622)
 ==12016==    by 0x855CA1F: ff_msmpeg4_decode_block (msmpeg4dec.c:651)
 ==12016==    by 0x855A240: msmpeg4v34_decode_mb (msmpeg4dec.c:275)
 ==12016==    by 0x83199DD: decode_slice (h263dec.c:226)
 ==12016==    by 0x831B1DE: ff_h263_decode_frame (h263dec.c:685)
 ==12016==    by 0x863DE4A: avcodec_decode_video2 (utils.c:1933)
 ==12016==    by 0x805F1C1: decode_video (ffmpeg.c:1640)
 ==12016==    by 0x80600D6: output_packet (ffmpeg.c:1836)
 ==12016==    by 0x8065E7D: process_input (ffmpeg.c:3042)
 ==12016==    by 0x80661AD: transcode_step (ffmpeg.c:3138)
 ==12016==  Address 0x46f2530 is not stack'd, malloc'd or (recently) free'd
 [wmv1 @ 0x446d020] dc overflow- block: 4 qscale: 4//
 [wmv1 @ 0x446d020] dc overflow- block: 0 qscale: 6//
 [wmv1 @ 0x446d020] dc overflow- block: 1 qscale: 6//
 [wmv1 @ 0x446d020] dc overflow- block: 0 qscale: 6//
 [wmv1 @ 0x446d020] dc overflow- block: 4 qscale: 6//
 [wmv1 @ 0x446d020] dc overflow- block: 5 qscale: 6//
 [wmv1 @ 0x446d020] dc overflow- block: 4 qscale: 6//
 [wmv1 @ 0x446d020] dc overflow- block: 1 qscale: 6//
 [wmv1 @ 0x446d020] dc overflow- block: 3 qscale: 6//
 [wmv1 @ 0x446d020] dc overflow- block: 2 qscale: 8//
 [wmv1 @ 0x446d020] dc overflow- block: 0 qscale: 7//
 [wmv1 @ 0x446d020] dc overflow- block: 1 qscale: 7//
 [wmv1 @ 0x446d020] dc overflow- block: 2 qscale: 7//
 [wmv1 @ 0x446d020] dc overflow- block: 3 qscale: 7//
 [wmv1 @ 0x446d020] dc overflow- block: 2 qscale: 7//
 [wmv1 @ 0x446d020] dc overflow- block: 3 qscale: 7//
 [wmv1 @ 0x446d020] dc overflow- block: 0 qscale: 7//
 [wmv1 @ 0x446d020] dc overflow- block: 1 qscale: 7//
 [wmv1 @ 0x446d020] dc overflow- block: 2 qscale: 7//
 [wmv1 @ 0x446d020] dc overflow- block: 3 qscale: 7//
 [wmv1 @ 0x446d020] dc overflow- block: 0 qscale: 7//
 [wmv1 @ 0x446d020] dc overflow- block: 1 qscale: 7//
 [wmv1 @ 0x446d020] dc overflow- block: 2 qscale: 7//
 [wmv1 @ 0x446d020] dc overflow- block: 3 qscale: 7//
 [wmv1 @ 0x446d020] dc overflow- block: 2 qscale: 7//
 [wmv1 @ 0x446d020] dc overflow- block: 3 qscale: 7//
     Last message repeated 1 times
 [wmv1 @ 0x446d020] dc overflow- block: 1 qscale: 7//
 [wmv1 @ 0x446d020] dc overflow- block: 2 qscale: 7//
 [wmv1 @ 0x446d020] dc overflow- block: 3 qscale: 7//
 [wmv1 @ 0x446d020] dc overflow- block: 0 qscale: 7//
 [wmv1 @ 0x446d020] dc overflow- block: 1 qscale: 7//
 [wmv1 @ 0x446d020] dc overflow- block: 2 qscale: 7//
 [wmv1 @ 0x446d020] dc overflow- block: 3 qscale: 7//
 [wmv1 @ 0x446d020] dc overflow- block: 2 qscale: 7//
 [wmv1 @ 0x446d020] dc overflow- block: 3 qscale: 7//
 [wmv1 @ 0x446d020] dc overflow- block: 2 qscale: 7//
 [wmv1 @ 0x446d020] dc overflow- block: 3 qscale: 7//
 [wmv1 @ 0x446d020] dc overflow- block: 2 qscale: 9//
 [wmv1 @ 0x446d020] dc overflow- block: 3 qscale: 9//
 [wmv1 @ 0x446d020] dc overflow- block: 2 qscale: 9//
 [wmv1 @ 0x446d020] dc overflow- block: 3 qscale: 9//
 frame=   88 fps= 31 q=0.0 size=N/A time=00:00:04.11 bitrate=N/A dup=10
 drop=0   frame=  111 fps= 33 q=0.0 size=N/A time=00:00:05.51 bitrate=N/A
 dup=10 drop=0   dc overflow- block: 0 qscale: 15//
 [wmv1 @ 0x446d020] dc overflow- block: 1 qscale: 15//
 [wmv1 @ 0x446d020] dc overflow- block: 2 qscale: 15//
 [wmv1 @ 0x446d020] dc overflow- block: 0 qscale: 18//
 [wmv1 @ 0x446d020] dc overflow- block: 1 qscale: 18//
 [wmv1 @ 0x446d020] dc overflow- block: 2 qscale: 18//
 [wmv1 @ 0x446d020] dc overflow- block: 3 qscale: 18//
 [wmv1 @ 0x446d020] dc overflow- block: 1 qscale: 19//
 [wmv1 @ 0x446d020] dc overflow- block: 0 qscale: 19//
 [wmv1 @ 0x446d020] dc overflow- block: 1 qscale: 19//
 [wmv1 @ 0x446d020] dc overflow- block: 2 qscale: 19//
 [wmv1 @ 0x446d020] dc overflow- block: 3 qscale: 19//
 [wmv1 @ 0x446d020] dc overflow- block: 2 qscale: 19//
 [wmv1 @ 0x446d020] dc overflow- block: 3 qscale: 19//
 frame=  143 fps= 37 q=0.0 Lsize=N/A time=00:00:05.95 bitrate=N/A dup=10
 drop=0
 video:9kB audio:952kB subtitle:0 global headers:0kB muxing overhead
 -100.002236%
 ==12016==
 ==12016== ERROR SUMMARY: 7082 errors from 2 contexts (suppressed: 3 from
 1)
 ==12016== malloc/free: in use at exit: 0 bytes in 0 blocks.
 ==12016== malloc/free: 8,856 allocs, 8,856 frees, 6,738,528 bytes
 allocated.
 ==12016== For counts of detected errors, rerun with: -v
 ==12016== All heap blocks were freed -- no leaks are possible.
 }}}

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2532#comment:1>
FFmpeg <http://ffmpeg.org>
FFmpeg issue tracker


More information about the FFmpeg-trac mailing list