[FFmpeg-trac] #8670(ffmpeg:new): scale/rate is 1/0 which is invalid

[FFmpeg]

#8670: scale/rate is 1/0 which is invalid
-----------------------------------+----------------------------------
             Reporter:  kuzne1144  |                     Type:  defect
               Status:  new        |                 Priority:  normal
            Component:  ffmpeg     |                  Version:  4.2
             Keywords:             |               Blocked By:
             Blocking:             |  Reproduced by developer:  0
Analyzed by developer:  0          |
-----------------------------------+----------------------------------
 Summary of the bug:
 Error when converting avi file without audio stream to mp4.
 File is produced by mobile DVR.
 When file contains audio stream then converting works perfectly.

 How to reproduce:
 {{{
 ffmpeg.exe -i 1.avi -vcodec copy 1.mp4
 ffmpeg version 4.2.2
 built on 2020-01-22
 }}}


 E:\2>ffmpeg.exe -i 1.avi -vcodec copy 1.mp4
 ffmpeg version 4.2.2 Copyright (c) 2000-2019 the FFmpeg developers
   built with gcc 9.2.1 (GCC) 20200122
   configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-
 fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-
 libdav1d --enable-libbluray --enable-libfreetype --enable-libmp3lame
 --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg
 --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr
 --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack
 --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2
 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-
 libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa
 --enable-libspeex --enable-libxvid --enable-libaom --enable-libmfx
 --enable-amf --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-
 nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt
   libavutil      56. 31.100 / 56. 31.100
   libavcodec     58. 54.100 / 58. 54.100
   libavformat    58. 29.100 / 58. 29.100
   libavdevice    58.  8.100 / 58.  8.100
   libavfilter     7. 57.100 /  7. 57.100
   libswscale      5.  5.100 /  5.  5.100
   libswresample   3.  5.100 /  3.  5.100
   libpostproc    55.  5.100 / 55.  5.100
 [avi @ 0000013b44d29500] scale/rate is 1/0 which is invalid. (This file
 has been generated by broken software.)
 [avi @ 0000013b44d29500] Invalid sample rate: 0
 1.avi: Invalid data found when processing input

--
Ticket URL: <https://trac.ffmpeg.org/ticket/8670>
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