[FFmpeg-trac] #7928(swresample:new): Regression in libswresample

[FFmpeg]

#7928: Regression in libswresample
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             Reporter:  Nomis101    |                     Type:  defect
               Status:  new         |                 Priority:  normal
            Component:  swresample  |                  Version:  git-master
             Keywords:  regression  |               Blocked By:
             Blocking:              |  Reproduced by developer:  0
Analyzed by developer:  0           |
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 Summary of the bug:
 I regularly build HandBrake against the latest FFmpeg master to check if
 all works as expected or something is broken and I need to open a bug.
 With the latest master I found some issues (but I'm unsure if this is a
 regression or not).

 After commit a9fa6b8e025cd138f8c3ed4cfa6d568bd79d0123 to swresample.c HB
 doesn't recognize the audio stream anymore, so the encoded file has no
 audio stream at all. This is true for every movie file and every output
 audio codec. The HB console is spilled a hundred times with the very same
 error

 [SWR @ 0x11a44a000] Requested input sample rate 0 is invalid
 [01:15:37] decavcodec: hb_audio_resample_update() failed
 [SWR @ 0x11a44a000] Requested input sample rate 0 is invalid
 [01:15:37] decavcodec: hb_audio_resample_update() failed
 [SWR @ 0x11a44a000] Requested input sample rate 0 is invalid
 [01:15:37] decavcodec: hb_audio_resample_update() failed
 [SWR @ 0x11a44a000] Requested input sample rate 0 is invalid
 [01:15:37] decavcodec: hb_audio_resample_update() failed
 [SWR @ 0x11a44a000] Requested input sample rate 0 is invalid
 [01:15:37] decavcodec: hb_audio_resample_update() failed
 [SWR @ 0x11a44a000] Requested input sample rate 0 is invalid
 [01:15:37] decavcodec: hb_audio_resample_update() failed
 [SWR @ 0x11a44a000] Requested input sample rate 0 is invalid
 [01:15:37] decavcodec: hb_audio_resample_update() failed
 [SWR @ 0x11a44a000] Requested input sample rate 0 is invalid
 [01:15:37] decavcodec: hb_audio_resample_update() failed
 [SWR @ 0x11a44a000] Requested input sample rate 0 is invalid
 error: hb_audio_resample_update: swr_init() failed (Invalid argument)
 error: Last error repeated 51 times

 The altered code is used inside HB here:
 https://github.com/HandBrake/HandBrake/blob/5a65df0d5838a3c8896ca0f5ce077cdf051358dc/libhb/encavcodecaudio.c#L254

 FFmpeg itself works without any issue, so there is no FFmpeg output I
 could post. If this behavior is intended, then I will report it to HB.

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Ticket URL: <https://trac.ffmpeg.org/ticket/7928>
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