[FFmpeg-trac] #5448(undetermined:new): aac: wrong calculation of duration

FFmpeg trac at avcodec.org
Sun Apr 17 20:44:47 CEST 2016


#5448: aac: wrong calculation of duration
-------------------------------------+-------------------------------------
               Reporter:  ami_stuff  |                  Owner:
                   Type:  defect     |                 Status:  new
               Priority:  normal     |              Component:
                Version:             |  undetermined
  unspecified                        |               Keywords:
             Blocked By:             |               Blocking:
Reproduced by developer:  0          |  Analyzed by developer:  0
-------------------------------------+-------------------------------------
 it used to be correct long time ago:

 {{{
 C:\>ffmpeg -i 1.aac
 ffmpeg version 2.1.3 Copyright (c) 2000-2013 the FFmpeg developers
   built on Jan 21 2014 18:55:26 with gcc 4.8.2 (GCC)
   configuration: --enable-gpl --enable-version3 --disable-w32threads
 --enable-av
 isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls
 --enab
 le-iconv --enable-libass --enable-libbluray --enable-libcaca --enable-
 libfreetyp
 e --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame
 --ena
 ble-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg
 --enable-l
 ibopus --enable-librtmp --enable-libschroedinger --enable-libsoxr
 --enable-libsp
 eex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-
 libvo-aa
 cenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-
 libwavp
 ack --enable-libx264 --enable-libxavs --enable-libxvid --enable-zlib
   libavutil      52. 48.101 / 52. 48.101
   libavcodec     55. 39.101 / 55. 39.101
   libavformat    55. 19.104 / 55. 19.104
   libavdevice    55.  5.100 / 55.  5.100
   libavfilter     3. 90.100 /  3. 90.100
   libswscale      2.  5.101 /  2.  5.101
   libswresample   0. 17.104 /  0. 17.104
   libpostproc    52.  3.100 / 52.  3.100
 [aac @ 02a7a980] Estimating duration from bitrate, this may be inaccurate
 Input #0, aac, from '1.aac':
   Duration: 00:00:29.58, bitrate: 73 kb/s
     Stream #0:0: Audio: aac, 88200 Hz, mono, fltp, 73 kb/s
 At least one output file must be specified
 }}}



 {{{
 C:\>ffmpeg -i 1.aac out.wav
 ffmpeg version N-79468-ga676c29 Copyright (c) 2000-2016 the FFmpeg
 developers
   built with gcc 4.5.0 (GCC) 20100414 (Fedora MinGW 4.5.0-1.fc14)
   configuration: --prefix=/var/www/users/research/ffmpeg/snapshots/build
 --arch=
 x86 --target-os=mingw32 --cross-prefix=i686-pc-mingw32- --cc='ccache i686
 -pc-min
 gw32-gcc' --enable-pthreads --enable-memalign-hack --enable-runtime-
 cpudetect --
 enable-cross-compile --enable-static --disable-shared --extra-
 libs='-lws2_32 -lw
 inmm -lpthread' --extra-cflags='--static
 -I/var/www/users/research/ffmpeg/snapsh
 ots/build/include' --extra-ldflags='-static
 -L/var/www/users/research/ffmpeg/sna
 pshots/build/lib' --enable-bzlib --enable-zlib --enable-gpl --enable-
 version3 --
 enable-nonfree --enable-libx264 --enable-libspeex --enable-libtheora
 --enable-li
 bvorbis --enable-libfaac --enable-libxvid --enable-libopencore-amrnb
 --enable-li
 bopencore-amrwb --enable-libmp3lame --enable-libfreetype --enable-libvpx
 --disab
 le-decoder=libvpx
   libavutil      55. 22.100 / 55. 22.100
   libavcodec     57. 34.102 / 57. 34.102
   libavformat    57. 34.101 / 57. 34.101
   libavdevice    57.  0.101 / 57.  0.101
   libavfilter     6. 42.100 /  6. 42.100
   libswscale      4.  1.100 /  4.  1.100
   libswresample   2.  0.101 /  2.  0.101
   libpostproc    54.  0.100 / 54.  0.100
 [aac @ 0x2894160] Estimating duration from bitrate, this may be inaccurate
 Input #0, aac, from '1.aac':
   Duration: 00:04:47.72, bitrate: 7 kb/s
     Stream #0:0: Audio: aac (LC), 88200 Hz, mono, fltp, 7 kb/s
 File 'out.wav' already exists. Overwrite ? [y/N] y
 [wav @ 0x2897420] Using AVStream.codec to pass codec parameters to muxers
 is dep
 recated, use AVStream.codecpar instead.
 Output #0, wav, to 'out.wav':
   Metadata:
     ISFT            : Lavf57.34.101
     Stream #0:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 88200 Hz, mono,
 s16,
 1411 kb/s
     Metadata:
       encoder         : Lavc57.34.102 pcm_s16le
 Stream mapping:
   Stream #0:0 -> #0:0 (aac (native) -> pcm_s16le (native))
 Press [q] to stop, [?] for help
 [wav @ 0x2897420] Non-monotonous DTS in output stream 0:0; previous:
 88057, curr
 ent: 0; changing to 88057. This may result in incorrect timestamps in the
 output
  file.
 [wav @ 0x2897420] Non-monotonous DTS in output stream 0:0; previous:
 88057, curr
 ent: 1024; changing to 88057. This may result in incorrect timestamps in
 the out
 put file.
 [wav @ 0x2897420] Non-monotonous DTS in output stream 0:0; previous:
 88057, curr
 ent: 2048; changing to 88057. This may result in incorrect timestamps in
 the out
 put file.
 [wav @ 0x2897420] Non-monotonous DTS in output stream 0:0; previous:
 88057, curr
 ent: 3072; changing to 88057. This may result in incorrect timestamps in
 the out
 put file.
 [wav @ 0x2897420] Non-monotonous DTS in output stream 0:0; previous:
 88057, curr
 ent: 4096; changing to 88057. This may result in incorrect timestamps in
 the out
 put file.
 [wav @ 0x2897420] Non-monotonous DTS in output stream 0:0; previous:
 88057, curr
 ent: 5120; changing to 88057. This may result in incorrect timestamps in
 the out
 put file.
 [wav @ 0x2897420] Non-monotonous DTS in output stream 0:0; previous:
 88057, curr
 ent: 6144; changing to 88057. This may result in incorrect timestamps in
 the out
 put file.
 [wav @ 0x2897420] Non-monotonous DTS in output stream 0:0; previous:
 88057, curr
 ent: 7168; changing to 88057. This may result in incorrect timestamps in
 the out
 put file.
 [wav @ 0x2897420] Non-monotonous DTS in output stream 0:0; previous:
 88057, curr
 ent: 8192; changing to 88057. This may result in incorrect timestamps in
 the out
 put file.
 [wav @ 0x2897420] Non-monotonous DTS in output stream 0:0; previous:
 88057, curr
 ent: 9216; changing to 88057. This may result in incorrect timestamps in
 the out
 put file.
 [wav @ 0x2897420] Non-monotonous DTS in output stream 0:0; previous:
 88057, curr
 ent: 10240; changing to 88057. This may result in incorrect timestamps in
 the ou
 tput file.
 [wav @ 0x2897420] Non-monotonous DTS in output stream 0:0; previous:
 88057, curr
 ent: 11264; changing to 88057. This may result in incorrect timestamps in
 the ou
 tput file.
 [wav @ 0x2897420] Non-monotonous DTS in output stream 0:0; previous:
 88057, curr
 ent: 12288; changing to 88057. This may result in incorrect timestamps in
 the ou
 tput file.
 [wav @ 0x2897420] Non-monotonous DTS in output stream 0:0; previous:
 88057, curr
 ent: 13312; changing to 88057. This may result in incorrect timestamps in
 the ou
 tput file.
 [wav @ 0x2897420] Non-monotonous DTS in output stream 0:0; previous:
 88057, curr
 ent: 14336; changing to 88057. This may result in incorrect timestamps in
 the ou
 tput file.
 [wav @ 0x2897420] Non-monotonous DTS in output stream 0:0; previous:
 88057, curr
 ent: 15360; changing to 88057. This may result in incorrect timestamps in
 the ou
 tput file.
 [wav @ 0x2897420] Non-monotonous DTS in output stream 0:0; previous:
 88057, curr
 ent: 16384; changing to 88057. This may result in incorrect timestamps in
 the ou
 tput file.
 [wav @ 0x2897420] Non-monotonous DTS in output stream 0:0; previous:
 88057, curr
 ent: 17408; changing to 88057. This may result in incorrect timestamps in
 the ou
 tput file.
 [wav @ 0x2897420] Non-monotonous DTS in output stream 0:0; previous:
 88057, curr
 ent: 18432; changing to 88057. This may result in incorrect timestamps in
 the ou
 tput file.
 [wav @ 0x2897420] Non-monotonous DTS in output stream 0:0; previous:
 88057, curr
 ent: 19456; changing to 88057. This may result in incorrect timestamps in
 the ou
 tput file.
 [wav @ 0x2897420] Non-monotonous DTS in output stream 0:0; previous:
 88057, curr
 ent: 20480; changing to 88057. This may result in incorrect timestamps in
 the ou
 tput file.
 [wav @ 0x2897420] Non-monotonous DTS in output stream 0:0; previous:
 88057, curr
 ent: 21504; changing to 88057. This may result in incorrect timestamps in
 the ou
 tput file.
 [wav @ 0x2897420] Non-monotonous DTS in output stream 0:0; previous:
 88057, curr
 ent: 22528; changing to 88057. This may result in incorrect timestamps in
 the ou
 tput file.
 [wav @ 0x2897420] Non-monotonous DTS in output stream 0:0; previous:
 88057, curr
 ent: 23552; changing to 88057. This may result in incorrect timestamps in
 the ou
 tput file.
 [wav @ 0x2897420] Non-monotonous DTS in output stream 0:0; previous:
 88057, curr
 ent: 24576; changing to 88057. This may result in incorrect timestamps in
 the ou
 tput file.
 [wav @ 0x2897420] Non-monotonous DTS in output stream 0:0; previous:
 88057, curr
 ent: 25600; changing to 88057. This may result in incorrect timestamps in
 the ou
 tput file.
 [wav @ 0x2897420] Non-monotonous DTS in output stream 0:0; previous:
 88057, curr
 ent: 26624; changing to 88057. This may result in incorrect timestamps in
 the ou
 tput file.
 [wav @ 0x2897420] Non-monotonous DTS in output stream 0:0; previous:
 88057, curr
 ent: 27648; changing to 88057. This may result in incorrect timestamps in
 the ou
 tput file.
 [wav @ 0x2897420] Non-monotonous DTS in output stream 0:0; previous:
 88057, curr
 ent: 28672; changing to 88057. This may result in incorrect timestamps in
 the ou
 tput file.
 [wav @ 0x2897420] Non-monotonous DTS in output stream 0:0; previous:
 88057, curr
 ent: 29696; changing to 88057. This may result in incorrect timestamps in
 the ou
 tput file.
 [wav @ 0x2897420] Non-monotonous DTS in output stream 0:0; previous:
 88057, curr
 ent: 30720; changing to 88057. This may result in incorrect timestamps in
 the ou
 tput file.
 [wav @ 0x2897420] Non-monotonous DTS in output stream 0:0; previous:
 88057, curr
 ent: 31744; changing to 88057. This may result in incorrect timestamps in
 the ou
 tput file.
 [wav @ 0x2897420] Non-monotonous DTS in output stream 0:0; previous:
 88057, curr
 ent: 32768; changing to 88057. This may result in incorrect timestamps in
 the ou
 tput file.
 [wav @ 0x2897420] Non-monotonous DTS in output stream 0:0; previous:
 88057, curr
 ent: 33792; changing to 88057. This may result in incorrect timestamps in
 the ou
 tput file.
 [wav @ 0x2897420] Non-monotonous DTS in output stream 0:0; previous:
 88057, curr
 ent: 34816; changing to 88057. This may result in incorrect timestamps in
 the ou
 tput file.
 [wav @ 0x2897420] Non-monotonous DTS in output stream 0:0; previous:
 88057, curr
 ent: 35840; changing to 88057. This may result in incorrect timestamps in
 the ou
 tput file.
 [wav @ 0x2897420] Non-monotonous DTS in output stream 0:0; previous:
 88057, curr
 ent: 36864; changing to 88057. This may result in incorrect timestamps in
 the ou
 tput file.
 [wav @ 0x2897420] Non-monotonous DTS in output stream 0:0; previous:
 88057, curr
 ent: 37888; changing to 88057. This may result in incorrect timestamps in
 the ou
 tput file.
 [wav @ 0x2897420] Non-monotonous DTS in output stream 0:0; previous:
 88057, curr
 ent: 38912; changing to 88057. This may result in incorrect timestamps in
 the ou
 tput file.
 [wav @ 0x2897420] Non-monotonous DTS in output stream 0:0; previous:
 88057, curr
 ent: 39936; changing to 88057. This may result in incorrect timestamps in
 the ou
 tput file.
 [wav @ 0x2897420] Non-monotonous DTS in output stream 0:0; previous:
 88057, curr
 ent: 40960; changing to 88057. This may result in incorrect timestamps in
 the ou
 tput file.
 [wav @ 0x2897420] Non-monotonous DTS in output stream 0:0; previous:
 88057, curr
 ent: 41984; changing to 88057. This may result in incorrect timestamps in
 the ou
 tput file.
 [wav @ 0x2897420] Non-monotonous DTS in output stream 0:0; previous:
 88057, curr
 ent: 43008; changing to 88057. This may result in incorrect timestamps in
 the ou
 tput file.
 [wav @ 0x2897420] Non-monotonous DTS in output stream 0:0; previous:
 88057, curr
 ent: 44032; changing to 88057. This may result in incorrect timestamps in
 the ou
 tput file.
 [wav @ 0x2897420] Non-monotonous DTS in output stream 0:0; previous:
 88057, curr
 ent: 45056; changing to 88057. This may result in incorrect timestamps in
 the ou
 tput file.
 [wav @ 0x2897420] Non-monotonous DTS in output stream 0:0; previous:
 88057, curr
 ent: 46080; changing to 88057. This may result in incorrect timestamps in
 the ou
 tput file.
 [wav @ 0x2897420] Non-monotonous DTS in output stream 0:0; previous:
 88057, curr
 ent: 47104; changing to 88057. This may result in incorrect timestamps in
 the ou
 tput file.
 [wav @ 0x2897420] Non-monotonous DTS in output stream 0:0; previous:
 88057, curr
 ent: 48128; changing to 88057. This may result in incorrect timestamps in
 the ou
 tput file.
 [wav @ 0x2897420] Non-monotonous DTS in output stream 0:0; previous:
 88057, curr
 ent: 49152; changing to 88057. This may result in incorrect timestamps in
 the ou
 tput file.
 [wav @ 0x2897420] Non-monotonous DTS in output stream 0:0; previous:
 88057, curr
 ent: 50176; changing to 88057. This may result in incorrect timestamps in
 the ou
 tput file.
 [wav @ 0x2897420] Non-monotonous DTS in output stream 0:0; previous:
 88057, curr
 ent: 51200; changing to 88057. This may result in incorrect timestamps in
 the ou
 tput file.
 [wav @ 0x2897420] Non-monotonous DTS in output stream 0:0; previous:
 88057, curr
 ent: 52224; changing to 88057. This may result in incorrect timestamps in
 the ou
 tput file.
 [wav @ 0x2897420] Non-monotonous DTS in output stream 0:0; previous:
 88057, curr
 ent: 53248; changing to 88057. This may result in incorrect timestamps in
 the ou
 tput file.
 [wav @ 0x2897420] Non-monotonous DTS in output stream 0:0; previous:
 88057, curr
 ent: 54272; changing to 88057. This may result in incorrect timestamps in
 the ou
 tput file.
 [wav @ 0x2897420] Non-monotonous DTS in output stream 0:0; previous:
 88057, curr
 ent: 55296; changing to 88057. This may result in incorrect timestamps in
 the ou
 tput file.
 [wav @ 0x2897420] Non-monotonous DTS in output stream 0:0; previous:
 88057, curr
 ent: 56320; changing to 88057. This may result in incorrect timestamps in
 the ou
 tput file.
 [wav @ 0x2897420] Non-monotonous DTS in output stream 0:0; previous:
 88057, curr
 ent: 57344; changing to 88057. This may result in incorrect timestamps in
 the ou
 tput file.
 [wav @ 0x2897420] Non-monotonous DTS in output stream 0:0; previous:
 88057, curr
 ent: 58368; changing to 88057. This may result in incorrect timestamps in
 the ou
 tput file.
 [wav @ 0x2897420] Non-monotonous DTS in output stream 0:0; previous:
 88057, curr
 ent: 59392; changing to 88057. This may result in incorrect timestamps in
 the ou
 tput file.
 [wav @ 0x2897420] Non-monotonous DTS in output stream 0:0; previous:
 88057, curr
 ent: 60416; changing to 88057. This may result in incorrect timestamps in
 the ou
 tput file.
 [wav @ 0x2897420] Non-monotonous DTS in output stream 0:0; previous:
 88057, curr
 ent: 61440; changing to 88057. This may result in incorrect timestamps in
 the ou
 tput file.
 [wav @ 0x2897420] Non-monotonous DTS in output stream 0:0; previous:
 88057, curr
 ent: 62464; changing to 88057. This may result in incorrect timestamps in
 the ou
 tput file.
 [wav @ 0x2897420] Non-monotonous DTS in output stream 0:0; previous:
 88057, curr
 ent: 63488; changing to 88057. This may result in incorrect timestamps in
 the ou
 tput file.
 [wav @ 0x2897420] Non-monotonous DTS in output stream 0:0; previous:
 88057, curr
 ent: 64512; changing to 88057. This may result in incorrect timestamps in
 the ou
 tput file.
 [wav @ 0x2897420] Non-monotonous DTS in output stream 0:0; previous:
 88057, curr
 ent: 65536; changing to 88057. This may result in incorrect timestamps in
 the ou
 tput file.
 [wav @ 0x2897420] Non-monotonous DTS in output stream 0:0; previous:
 88057, curr
 ent: 66560; changing to 88057. This may result in incorrect timestamps in
 the ou
 tput file.
 [wav @ 0x2897420] Non-monotonous DTS in output stream 0:0; previous:
 88057, curr
 ent: 67584; changing to 88057. This may result in incorrect timestamps in
 the ou
 tput file.
 [wav @ 0x2897420] Non-monotonous DTS in output stream 0:0; previous:
 88057, curr
 ent: 68608; changing to 88057. This may result in incorrect timestamps in
 the ou
 tput file.
 [wav @ 0x2897420] Non-monotonous DTS in output stream 0:0; previous:
 88057, curr
 ent: 69632; changing to 88057. This may result in incorrect timestamps in
 the ou
 tput file.
 [wav @ 0x2897420] Non-monotonous DTS in output stream 0:0; previous:
 88057, curr
 ent: 70656; changing to 88057. This may result in incorrect timestamps in
 the ou
 tput file.
 [wav @ 0x2897420] Non-monotonous DTS in output stream 0:0; previous:
 88057, curr
 ent: 71680; changing to 88057. This may result in incorrect timestamps in
 the ou
 tput file.
 [wav @ 0x2897420] Non-monotonous DTS in output stream 0:0; previous:
 88057, curr
 ent: 72704; changing to 88057. This may result in incorrect timestamps in
 the ou
 tput file.
 [wav @ 0x2897420] Non-monotonous DTS in output stream 0:0; previous:
 88057, curr
 ent: 73728; changing to 88057. This may result in incorrect timestamps in
 the ou
 tput file.
 [wav @ 0x2897420] Non-monotonous DTS in output stream 0:0; previous:
 88057, curr
 ent: 74752; changing to 88057. This may result in incorrect timestamps in
 the ou
 tput file.
 [wav @ 0x2897420] Non-monotonous DTS in output stream 0:0; previous:
 88057, curr
 ent: 75776; changing to 88057. This may result in incorrect timestamps in
 the ou
 tput file.
 [wav @ 0x2897420] Non-monotonous DTS in output stream 0:0; previous:
 88057, curr
 ent: 76800; changing to 88057. This may result in incorrect timestamps in
 the ou
 tput file.
 [wav @ 0x2897420] Non-monotonous DTS in output stream 0:0; previous:
 88057, curr
 ent: 77824; changing to 88057. This may result in incorrect timestamps in
 the ou
 tput file.
 [wav @ 0x2897420] Non-monotonous DTS in output stream 0:0; previous:
 88057, curr
 ent: 78848; changing to 88057. This may result in incorrect timestamps in
 the ou
 tput file.
 [wav @ 0x2897420] Non-monotonous DTS in output stream 0:0; previous:
 88057, curr
 ent: 79872; changing to 88057. This may result in incorrect timestamps in
 the ou
 tput file.
 [wav @ 0x2897420] Non-monotonous DTS in output stream 0:0; previous:
 88057, curr
 ent: 80896; changing to 88057. This may result in incorrect timestamps in
 the ou
 tput file.
 [wav @ 0x2897420] Non-monotonous DTS in output stream 0:0; previous:
 88057, curr
 ent: 81920; changing to 88057. This may result in incorrect timestamps in
 the ou
 tput file.
 [wav @ 0x2897420] Non-monotonous DTS in output stream 0:0; previous:
 88057, curr
 ent: 82944; changing to 88057. This may result in incorrect timestamps in
 the ou
 tput file.
 [wav @ 0x2897420] Non-monotonous DTS in output stream 0:0; previous:
 88057, curr
 ent: 83968; changing to 88057. This may result in incorrect timestamps in
 the ou
 tput file.
 [wav @ 0x2897420] Non-monotonous DTS in output stream 0:0; previous:
 88057, curr
 ent: 84992; changing to 88057. This may result in incorrect timestamps in
 the ou
 tput file.
 [wav @ 0x2897420] Non-monotonous DTS in output stream 0:0; previous:
 88057, curr
 ent: 86016; changing to 88057. This may result in incorrect timestamps in
 the ou
 tput file.
 [wav @ 0x2897420] Non-monotonous DTS in output stream 0:0; previous:
 88057, curr
 ent: 87040; changing to 88057. This may result in incorrect timestamps in
 the ou
 tput file.
 size=    5188kB time=00:00:29.10 bitrate=1460.2kbits/s speed= 133x
 video:0kB audio:5188kB subtitle:0kB other streams:0kB global headers:0kB
 muxing
 overhead: 0.001920%
 }}}

--
Ticket URL: <https://trac.ffmpeg.org/ticket/5448>
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