[FFmpeg-trac] #9102(undetermined:new): make HLS from multicast with ac3 audio track which have 0 channels

[FFmpeg]

#9102: make HLS from multicast with ac3 audio track which have 0 channels
-------------------------------------+-------------------------------------
             Reporter:  krs_vital    |                    Owner:
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:
                                     |  undetermined
              Version:  git-master   |               Resolution:
             Keywords:  ac3          |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------

Comment (by krs_vital):

 i cant record with ffmpeg becouse it cat stream with 0 channels:

 ffmpeg -i udp://239.192.39.3:1234 -c copy /var/db/stream.ts

 [mpegts @ 0x3027e00] Could not find codec parameters for stream 3 (Audio:
 ac3 (AC-3 / 0x332D4341), 0 channels, fltp): unspecified sample rate
 Consider increasing the value for the 'analyzeduration' (0) and
 'probesize' (5000000) options
 Input #0, mpegts, from 'udp://239.192.39.3:1234':
   Duration: N/A, start: 75125.665644, bitrate: N/A
   Program 17104
     Metadata:
       service_name    : VIP Premiere
       service_provider: HTB+
     Stream #0:1[0x130]: Video: h264 (High) ([27][0][0][0] / 0x001B),
 yuv420p(tv, bt709, top first), 1920x1080 [SAR 1:1 DAR 16:9], 25 fps, 50
 tbr, 90k tbn, 50 tbc
     Stream #0:2[0x194](rus): Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz,
 stereo, fltp, 192 kb/s
     Stream #0:3[0x1a8](rus): Audio: ac3 (AC-3 / 0x332D4341), 0 channels,
 fltp
     Stream #0:4[0x1f8](rus): Subtitle: dvb_subtitle ([6][0][0][0] /
 0x0006)
   No Program
     Stream #0:0[0x12]: Data: epg
 Output #0, mpegts, to '/var/db/stream.ts':
   Metadata:
     encoder         : Lavf58.65.101
     Stream #0:0: Video: h264 (High) ([27][0][0][0] / 0x001B), yuv420p(tv,
 bt709, top first), 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 25 fps, 50 tbr,
 90k tbn, 90k tbc
     Stream #0:1(rus): Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz,
 stereo, fltp, 192 kb/s
 Stream mapping:
   Stream #0:1 -> #0:0 (copy)
   Stream #0:2 -> #0:1 (copy)
 Press [q] to stop, [?] for help

 but i managed to do this with multicat from videolan:

 /usr/local/bin/multicat -Uuf -t 10 @239.192.39.3 /var/db/stream.ts

 https://mycloud.g-service.ru:4430/s/A0OG7IFql1Tc6Zz

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Ticket URL: <https://trac.ffmpeg.org/ticket/9102#comment:2>
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