[FFmpeg-trac] #542(undetermined:new): Missing audio when encoding to mpeg-ts with "-threads 0"

[FFmpeg]

#542: Missing audio when encoding to mpeg-ts with "-threads 0"
-------------------------------------+-------------------------------------
             Reporter:  terran       |                    Owner:  michael
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:
              Version:  git-master   |  undetermined
             Keywords:               |               Resolution:
             Blocking:               |               Blocked By:
Analyzed by developer:  0            |  Reproduced by developer:  0
-------------------------------------+-------------------------------------

Comment (by terran):

 That command does reproduce the issue:

 {{{
 ffmpeg -threads 1 -i ../rehearsal_short.mp4 -qscale 1 -strict experimental
 -acodec aac out.ts
 ffmpeg version N-33726-g0556eee, Copyright (c) 2000-2011 the FFmpeg
 developers
   built on Oct 17 2011 17:57:32 with gcc 4.1.2 20080704 (Red Hat 4.1.2-48)
   configuration: --enable-pthreads --enable-avfilter --enable-shared
 --enable-gpl --enable-version3 --enable-nonfree --enable-libx264 --enable-
 libfaac
   libavutil    51. 21. 0 / 51. 21. 0
   libavcodec   53. 20. 1 / 53. 20. 1
   libavformat  53. 16. 0 / 53. 16. 0
   libavdevice  53.  4. 0 / 53.  4. 0
   libavfilter   2. 43. 6 /  2. 43. 6
   libswscale    2.  1. 0 /  2.  1. 0
   libpostproc  51.  2. 0 / 51.  2. 0
 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '../rehearsal_short.mp4':
   Metadata:
     major_brand     : isom
     minor_version   : 512
     compatible_brands: isomiso2avc1mp41
     creation_time   : 2011-08-17 05:00:00
     encoder         : Lavf53.15.0
   Duration: 00:00:05.03, start: 0.000000, bitrate: 9978 kb/s
     Stream #0:0(eng): Video: h264 (Constrained Baseline) (avc1 /
 0x31637661), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 10015 kb/s, 30 fps, 30
 tbr, 30 tbn, 60 tbc
     Metadata:
       creation_time   : 2011-08-17 05:00:00
     Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo,
 s16, 33 kb/s
     Metadata:
       creation_time   : 2011-08-17 05:00:00
 File 'out.ts' already exists. Overwrite ? [y/N] y
 w:1920 h:1080 pixfmt:yuv420p tb:1/1000000 sar:1/1 sws_param:
 [mpegts @ 0xc1223c0] muxrate VBR, pcr every 3 pkts, sdt every 200, pat/pmt
 every 40 pkts
 Output #0, mpegts, to 'out.ts':
   Metadata:
     major_brand     : isom
     minor_version   : 512
     compatible_brands: isomiso2avc1mp41
     creation_time   : 2011-08-17 05:00:00
     encoder         : Lavf53.16.0
     Stream #0:0(eng): Video: mpeg2video, yuv420p, 1920x1080 [SAR 1:1 DAR
 16:9], q=2-31, 200 kb/s, 90k tbn, 30 tbc
     Metadata:
       creation_time   : 2011-08-17 05:00:00
     Stream #0:1(eng): Audio: aac, 44100 Hz, stereo, s16, 128 kb/s
     Metadata:
       creation_time   : 2011-08-17 05:00:00
 Stream mapping:
   Stream #0.0 -> #0.0 (h264 -> mpeg2video)
   Stream #0.1 -> #0.1 (aac -> aac)
 Press [q] to stop, [?] for help
 frame=  150 fps= 30 q=1.0 Lsize=   12148kB time=00:00:04.96
 bitrate=20036.6kbits/s
 video:11218kB audio:32kB global headers:0kB muxing overhead 7.977625%
 }}}
 {{{
 ffmpeg -i out.ts
 ffmpeg version N-33726-g0556eee, Copyright (c) 2000-2011 the FFmpeg
 developers
   built on Oct 17 2011 17:57:32 with gcc 4.1.2 20080704 (Red Hat 4.1.2-48)
   configuration: --enable-pthreads --enable-avfilter --enable-shared
 --enable-gpl --enable-version3 --enable-nonfree --enable-libx264 --enable-
 libfaac
   libavutil    51. 21. 0 / 51. 21. 0
   libavcodec   53. 20. 1 / 53. 20. 1
   libavformat  53. 16. 0 / 53. 16. 0
   libavdevice  53.  4. 0 / 53.  4. 0
   libavfilter   2. 43. 6 /  2. 43. 6
   libswscale    2.  1. 0 /  2.  1. 0
   libpostproc  51.  2. 0 / 51.  2. 0
 [NULL @ 0xe3e1140] start time is not set in estimate_timings_from_pts
 Input #0, mpegts, from 'out.ts':
   Duration: 00:00:04.96, start: 1.400000, bitrate: 20036 kb/s
   Program 1
     Metadata:
       service_name    : Service01
       service_provider: FFmpeg
     Stream #0:0[0x100]: Video: mpeg2video (Main) ([2][0][0][0] / 0x0002),
 yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 104857 kb/s, 30 fps, 30 tbr, 90k
 tbn, 60 tbc
     Stream #0:1[0x101](eng): Audio: aac ([15][0][0][0] / 0x000F), 0
 channels, s16
 }}}

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/542#comment:47>
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