[FFmpeg-trac] #8657(ffprobe:new): read_intervals parameter in ffprobe skips comma separated intervals

[FFmpeg]

#8657: read_intervals parameter in ffprobe skips comma separated intervals
-------------------------------------+-----------------------------------
             Reporter:  zeco         |                    Owner:
                 Type:  defect       |                   Status:  new
             Priority:  important    |                Component:  ffprobe
              Version:  unspecified  |               Resolution:
             Keywords:  regression   |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-----------------------------------

Comment (by zeco):

 The issue is reproducible with the current FFmpeg git head (commit
 #ba0d785).

 Here is the unabridged output from the same command as above (minus -v
 error for default log level) given to the current git head's version of
 ffprobe:

 {{{
 % ffprobe -read_intervals 10%+#1,20%+#1,30%+#1 -show_entries
 frame=pkt_pts_time test.mp4
 ffprobe version N-97645-gba0d785 Copyright (c) 2007-2020 the FFmpeg
 developers
   built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.11) 20160609
   configuration:
   libavutil      56. 43.100 / 56. 43.100
   libavcodec     58. 82.100 / 58. 82.100
   libavformat    58. 43.100 / 58. 43.100
   libavdevice    58.  9.103 / 58.  9.103
   libavfilter     7. 80.100 /  7. 80.100
   libswscale      5.  6.101 /  5.  6.101
   libswresample   3.  6.100 /  3.  6.100
 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'test.mp4':
   Metadata:
     major_brand     : isom
     minor_version   : 512
     compatible_brands: isomiso2avc1mp41
     encoder         : Lavf57.83.100
   Duration: 01:09:56.00, start: 0.000000, bitrate: 7565 kb/s
     Stream #0:0(eng): Video: h264 (Main) (avc1 / 0x31637661), yuv420p,
 1920x1080 [SAR 1:1 DAR 16:9], 7560 kb/s, 50 fps, 50 tbr, 16k tbn, 100 tbc
 (default)
     Metadata:
       handler_name    : VideoHandler
 [FRAME]
 pkt_pts_time=8.000000
 [/FRAME]
 }}}

 The output should resemble what was shown with FFmpeg 3.2.14 above, i.e.
 there should be data for 3 frames.

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Ticket URL: <https://trac.ffmpeg.org/ticket/8657#comment:2>
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