[FFmpeg-trac] #6282(undetermined:new): Wrong bitrate information on produced .mp3 when using default options

FFmpeg trac at avcodec.org
Fri Mar 31 18:56:47 EEST 2017


#6282: Wrong bitrate information on produced .mp3 when using default options
-------------------------------------+-------------------------------------
             Reporter:  kohlhaas     |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:               |                  Version:
  undetermined                       |  unspecified
             Keywords:  mp3 bitrate  |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 What i try to do: I am trying to get the audio stream from a .flv and save
 it as .mp3 (using default options)

 Problem: When inspecting the output file with VLC media player, it shows a
 bitrate of 64 kB/s. As far as i read, default bitrate from ffmpeg should
 be 128kB/s, which also fits the actual file size.

 Consequence: When using the file in a HTML <audio>-Tag, some browsers
 (Internet Explorer, Safari) estimate the duration double as high as it
 actually is.

 Command line only specifies input and output file like
 ffmpeg -i input.flv output.mp3

 Additional Information: This problem does not occur when explicitely
 setting the bitrate with '-b:a 128k'.
 I tried this with several .flv files, also one from the web
 (http://www.mediacollege.com/video-gallery/testclips/barsandtone.flv) and
 also with a .mp3 file

 verbose -report output:
 ffmpeg version N-84348-gdb7a05d Copyright (c) 2000-2017 the FFmpeg
 developers
   built with gcc 6.3.0 (GCC)
   configuration: --enable-gpl --enable-version3 --enable-cuda --enable-
 cuvid --enable-d3d11va --enable-dxva2 --enable-libmfx --enable-nvenc
 --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r
 --enable-gnutls --enable-iconv --enable-libass --enable-libbluray
 --enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme
 --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame
 --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264
 --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libsnappy
 --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame
 --enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --enable-
 libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-
 libx265 --enable-libxavs --enable-libxvid --enable-libzimg --enable-lzma
 --enable-zlib
   libavutil      55. 50.100 / 55. 50.100
   libavcodec     57. 83.101 / 57. 83.101
   libavformat    57. 66.105 / 57. 66.105
   libavdevice    57.  3.100 / 57.  3.100
   libavfilter     6. 78.100 /  6. 78.100
   libswscale      4.  3.101 /  4.  3.101
   libswresample   2.  4.100 /  2.  4.100
   libpostproc    54.  2.100 / 54.  2.100
 Splitting the commandline.
 Reading option '-v' ... matched as option 'v' (set logging level) with
 argument '9'.
 Reading option '-loglevel' ... matched as option 'loglevel' (set logging
 level) with argument '99'.
 Reading option '-i' ... matched as input url with argument
 'test/mataudio/barsandtone.flv'.
 Reading option 'barsandtone.mp3' ... matched as output url.
 Finished splitting the commandline.
 Parsing a group of options: global .
 Applying option v (set logging level) with argument 9.
 Successfully parsed a group of options.
 Parsing a group of options: input url test/mataudio/barsandtone.flv.
 Successfully parsed a group of options.
 Opening an input file: test/mataudio/barsandtone.flv.
 [file @ 000000000050aa00] Setting default whitelist 'file,crypto'
 Probing flv score:100 size:2048
 Probing mp3 score:1 size:2048
 [flv @ 00000000006579e0] Format flv probed with size=2048 and score=100
 [flv @ 00000000006579e0] Before avformat_find_stream_info() pos: 13 bytes
 read:32768 seeks:0 nb_streams:0
 [flv @ 00000000006579e0] type:18, size:224, last:-1, dts:0 pos:21
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:0 pos:260
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:26 pos:590
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:9, size:5775, last:-1, dts:38 pos:920
 [flv @ 00000000006579e0] 0 14 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:52 pos:6710
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:78 pos:7040
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:104 pos:7370
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:130 pos:7700
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:156 pos:8030
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:182 pos:8360
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:208 pos:8690
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:235 pos:9020
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:261 pos:9350
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:287 pos:9680
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:313 pos:10010
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:339 pos:10340
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:365 pos:10670
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:391 pos:11000
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:417 pos:11330
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:444 pos:11660
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:470 pos:11990
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:496 pos:12320
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:522 pos:12650
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:548 pos:12980
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:574 pos:13310
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:600 pos:13640
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:626 pos:13970
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:653 pos:14300
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:679 pos:14630
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:705 pos:14960
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:731 pos:15290
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:757 pos:15620
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:783 pos:15950
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:809 pos:16280
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:835 pos:16610
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:862 pos:16940
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:888 pos:17270
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:914 pos:17600
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:940 pos:17930
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:966 pos:18260
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:992 pos:18590
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:1018 pos:18920
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:1044 pos:19250
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:1071 pos:19580
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:1097 pos:19910
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:1123 pos:20240
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:1149 pos:20570
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:1175 pos:20900
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:1201 pos:21230
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:1227 pos:21560
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:1253 pos:21890
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:1280 pos:22220
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:1306 pos:22550
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:1332 pos:22880
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:1358 pos:23210
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:1384 pos:23540
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:1410 pos:23870
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:1436 pos:24200
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:1462 pos:24530
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:1488 pos:24860
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:1515 pos:25190
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:1541 pos:25520
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:1567 pos:25850
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:1593 pos:26180
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:1619 pos:26510
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:1645 pos:26840
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:1671 pos:27170
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:1697 pos:27500
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:1724 pos:27830
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:1750 pos:28160
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:1776 pos:28490
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:1802 pos:28820
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:1828 pos:29150
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:1854 pos:29480
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:1880 pos:29810
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:1906 pos:30140
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:1933 pos:30470
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:1959 pos:30800
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:1985 pos:31130
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:2011 pos:31460
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:2037 pos:31790
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:2063 pos:32120
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:2089 pos:32450
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:2115 pos:32780
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:2142 pos:33110
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:2168 pos:33440
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:2194 pos:33770
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:2220 pos:34100
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:2246 pos:34430
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:2272 pos:34760
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:2298 pos:35090
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:2324 pos:35420
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:2351 pos:35750
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:2377 pos:36080
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:2403 pos:36410
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:2429 pos:36740
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:2455 pos:37070
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:2481 pos:37400
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:2507 pos:37730
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:2533 pos:38060
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:2560 pos:38390
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:2586 pos:38720
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:2612 pos:39050
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:2638 pos:39380
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:2664 pos:39710
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:2690 pos:40040
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:2716 pos:40370
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:2742 pos:40700
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:2768 pos:41030
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:2795 pos:41360
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:2821 pos:41690
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:2847 pos:42020
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:2873 pos:42350
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:2899 pos:42680
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:2925 pos:43010
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:2951 pos:43340
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:2977 pos:43670
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:3004 pos:44000
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:3030 pos:44330
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:3056 pos:44660
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:3082 pos:44990
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:3108 pos:45320
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:3134 pos:45650
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:3160 pos:45980
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:3186 pos:46310
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:3213 pos:46640
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:3239 pos:46970
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:3265 pos:47300
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:3291 pos:47630
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:3317 pos:47960
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:3343 pos:48290
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:3369 pos:48620
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:3395 pos:48950
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:3422 pos:49280
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:3448 pos:49610
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:3474 pos:49940
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:3500 pos:50270
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:3526 pos:50600
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:3552 pos:50930
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:3578 pos:51260
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:3604 pos:51590
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:3631 pos:51920
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:3657 pos:52250
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:3683 pos:52580
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:3709 pos:52910
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:3735 pos:53240
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:3761 pos:53570
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:3787 pos:53900
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:3813 pos:54230
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:3840 pos:54560
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:3866 pos:54890
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:3892 pos:55220
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:3918 pos:55550
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:3944 pos:55880
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:3970 pos:56210
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:3996 pos:56540
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:4022 pos:56870
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:4048 pos:57200
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:4075 pos:57530
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:4101 pos:57860
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:4127 pos:58190
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:4153 pos:58520
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:4179 pos:58850
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:4205 pos:59180
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:4231 pos:59510
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:4257 pos:59840
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:4284 pos:60170
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:4310 pos:60500
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:4336 pos:60830
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:4362 pos:61160
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:4388 pos:61490
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:4414 pos:61820
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:4440 pos:62150
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:4466 pos:62480
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:4493 pos:62810
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:4519 pos:63140
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:4545 pos:63470
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:4571 pos:63800
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:4597 pos:64130
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:4623 pos:64460
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:4649 pos:64790
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:4675 pos:65120
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:4702 pos:65450
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:4728 pos:65780
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:4754 pos:66110
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:4780 pos:66440
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:4806 pos:66770
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:4832 pos:67100
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:4858 pos:67430
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:4884 pos:67760
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:4911 pos:68090
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:4937 pos:68420
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:4963 pos:68750
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:4989 pos:69080
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:5015 pos:69410
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:5041 pos:69740
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:5067 pos:70070
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:5093 pos:70400
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:5120 pos:70730
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:5146 pos:71060
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:5172 pos:71390
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:5198 pos:71720
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:5224 pos:72050
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:5250 pos:72380
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:5276 pos:72710
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:5302 pos:73040
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:5328 pos:73370
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:5355 pos:73700
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:5381 pos:74030
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:5407 pos:74360
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:5433 pos:74690
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:5459 pos:75020
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:5485 pos:75350
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:5511 pos:75680
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:5537 pos:76010
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:5564 pos:76340
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:5590 pos:76670
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:5616 pos:77000
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:5642 pos:77330
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:5668 pos:77660
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:5694 pos:77990
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:5720 pos:78320
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:5746 pos:78650
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:5773 pos:78980
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:5799 pos:79310
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:5825 pos:79640
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:5851 pos:79970
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:5877 pos:80300
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:5903 pos:80630
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:5929 pos:80960
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:5955 pos:81290
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:5982 pos:81620
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:6008 pos:81950
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:6034 pos:82280
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:9, size:5775, last:-1, dts:6038 pos:82610
 [flv @ 00000000006579e0] 0 14 0
 [flv @ 00000000006579e0] type:8, size:315, last:-1, dts:6060 pos:88400
 [flv @ 00000000006579e0] 1 2F 0
 [flv @ 00000000006579e0] type:0, size:0, last:-1, dts:0 pos:88722
 [flv @ 00000000006579e0] stream 0: start_time: 0.000 duration:
 -9223372036854776.000
 [flv @ 00000000006579e0] stream 1: start_time: 0.038 duration:
 -9223372036854776.000
 [flv @ 00000000006579e0] format: start_time: 0.000 duration: 6.000
 bitrate=118 kb/s
 [flv @ 00000000006579e0] After avformat_find_stream_info() pos: 88722
 bytes read:88722 seeks:0 frames:235
 Input #0, flv, from 'test/mataudio/barsandtone.flv':
   Metadata:
     audiodelay      : 0
     canSeekToEnd    : true
   Duration: 00:00:06.00, start: 0.000000, bitrate: 118 kb/s
     Stream #0:0, 233, 1/1000: Audio: mp3, 44100 Hz, stereo, s16p, 98 kb/s
     Stream #0:1, 2, 1/1000: Video: vp6f, 1 reference frame, yuv420p,
 360x288 (368x288), 0/1, 409 kb/s, 10 fps, 1k tbr, 1k tbn
 Successfully opened the file.
 Parsing a group of options: output url barsandtone.mp3.
 Successfully parsed a group of options.
 Opening an output file: barsandtone.mp3.
 [file @ 0000000000512520] Setting default whitelist 'file,crypto'
 Successfully opened the file.
 Stream mapping:
   Stream #0:0 -> #0:0 (mp3 (native) -> mp3 (libmp3lame))
 Press [q] to stop, [?] for help
 cur_dts is invalid (this is harmless if it occurs once at the start per
 stream)
 detected 8 logical cores
 [graph_0_in_0_0 @ 000000000051bee0] Setting 'time_base' to value '1/44100'
 [graph_0_in_0_0 @ 000000000051bee0] Setting 'sample_rate' to value '44100'
 [graph_0_in_0_0 @ 000000000051bee0] Setting 'sample_fmt' to value 's16p'
 [graph_0_in_0_0 @ 000000000051bee0] Setting 'channel_layout' to value
 '0x3'
 [graph_0_in_0_0 @ 000000000051bee0] tb:1/44100 samplefmt:s16p
 samplerate:44100 chlayout:0x3
 [format_out_0_0 @ 00000000005610e0] Setting 'sample_fmts' to value
 's32p|fltp|s16p'
 [format_out_0_0 @ 00000000005610e0] Setting 'sample_rates' to value
 '44100|48000|32000|22050|24000|16000|11025|12000|8000'
 [format_out_0_0 @ 00000000005610e0] Setting 'channel_layouts' to value
 '0x4|0x3'
 [AVFilterGraph @ 0000000000581980] query_formats: 4 queried, 9 merged, 0
 already done, 0 delayed
 Output #0, mp3, to 'barsandtone.mp3':
   Metadata:
     audiodelay      : 0
     canSeekToEnd    : true
     TSSE            : Lavf57.66.105
     Stream #0:0, 0, 1/44100: Audio: mp3 (libmp3lame), 44100 Hz, stereo,
 s16p, delay 1105
     Metadata:
       encoder         : Lavc57.83.101 libmp3lame
 cur_dts is invalid (this is harmless if it occurs once at the start per
 stream)
     Last message repeated 2 times
 [flv @ 00000000006579e0] type:0, size:0, last:-1, dts:0 pos:88722
 No more output streams to write to, finishing.
 [libmp3lame @ 000000000055b480] Trying to remove 47 more samples than
 there are in the queue
 size=      96kB time=00:00:06.08 bitrate= 128.9kbits/s speed=18.1x
 video:0kB audio:96kB subtitle:0kB other streams:0kB global headers:0kB
 muxing overhead: 0.312877%
 Input file #0 (test/mataudio/barsandtone.flv):
   Input stream #0:0 (audio): 233 packets read (73162 bytes); 233 frames
 decoded (268416 samples);
   Input stream #0:1 (video): 2 packets read (11546 bytes);
   Total: 235 packets (84708 bytes) demuxed
 Output file #0 (barsandtone.mp3):
   Output stream #0:0 (audio): 233 frames encoded (268416 samples); 234
 packets muxed (97802 bytes);
   Total: 234 packets (97802 bytes) muxed
 233 frames successfully decoded, 0 decoding errors
 [AVIOContext @ 000000000051bdc0] Statistics: 1 seeks, 236 writeouts
 [AVIOContext @ 0000000000512c60] Statistics: 88722 bytes read, 0 seeks

--
Ticket URL: <https://trac.ffmpeg.org/ticket/6282>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker


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