[FFmpeg-trac] #10461(ffmpeg:new): AAC-LC RTP Multicast bug

[FFmpeg]

#10461: AAC-LC RTP Multicast bug
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             Reporter:  Aaron Jowitt  |                    Owner:  (none)
                 Type:  defect        |                   Status:  new
             Priority:  normal        |                Component:  ffmpeg
              Version:  6.0           |               Resolution:
             Keywords:                |               Blocked By:
             Blocking:                |  Reproduced by developer:  0
Analyzed by developer:  0             |
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Description changed by Aaron Jowitt:

Old description:

> After 8-10 hours of AAC-LC stereo audio TP Multicast streaming ok, the
> stream changes to continuously output silence or distorted low level
> audio (sometimes with audio in one channel only). It requires a restart
> of FFMPEG to resolve, but then always the problem occurs another 8-10
> hours later.
>
> It occurs with AAC-LC whether using the native AAC encoder or libFDK_AAC.
> It does not occur with Opus or HE-AAC.
>
> 96 kbps 32 kHz. Windows 11.
>
> {{{ffmpeg -re -f s16le -ar 32000 -ac 2 -i pipe:0 -af "lowpass=f=16000,
> volume=-2dB" -c:a libfdk_aac -profile:a aac_low -flags +global_header
> -b:a 96k -pkt_size 1480 -f rtp -payload_type 96 rtp://225.0.0.20:6004
> -async 2000}}}

New description:

 After 8-10 hours of AAC-LC stereo audio RTP Multicast streaming ok, the
 stream changes to continuously output silence or distorted low level audio
 (sometimes with audio in one channel only). It requires a restart of
 FFMPEG to resolve, but then always the problem occurs another 8-10 hours
 later.

 It occurs with AAC-LC whether using the native AAC encoder or libFDK_AAC.
 It does not occur with Opus or HE-AAC.

 96 kbps 32 kHz. Windows 11.

 {{{ffmpeg -re -f s16le -ar 32000 -ac 2 -i pipe:0 -af "lowpass=f=16000,
 volume=-2dB" -c:a libfdk_aac -profile:a aac_low -flags +global_header -b:a
 96k -pkt_size 1480 -f rtp -payload_type 96 rtp://225.0.0.20:6004 -async
 2000}}}

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Ticket URL: <https://trac.ffmpeg.org/ticket/10461#comment:1>
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