[FFmpeg-trac] #9277(undetermined:new): ffmpeg concat cannot mix pipe and file input

[FFmpeg]

#9277: ffmpeg concat cannot mix pipe and file input
-------------------------------------+-------------------------------------
             Reporter:  Trevor       |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:               |                  Version:  git-
  undetermined                       |  master
             Keywords:  concat       |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 Summary of the bug:
 Between 4.2.2 and 4.3.2 you can no longer use both pipe and file input for
 concat (file input for the images, and pipe for the list of files and
 durations).

 How to reproduce:
 {{{
 % ffmpeg "-v" "error" "-f" "concat" "-protocol_whitelist" "file,pipe" "-i"
 "-" "-pix_fmt" "yuv420p" "-vcodec" "libx264" "-vf"
 "scale=trunc(iw/2)*2:trunc(ih/2)*2,fps=30" "-crf" "28" "output.mp4"

 ffmpeg version N-57631-gebedd26eef-static
 https://johnvansickle.com/ffmpeg/  Copyright (c) 2000-2021 the FFmpeg
 developers
 built with gcc 8 (Debian 8.3.0-6)
 configuration: --enable-gpl --enable-version3 --enable-static --disable-
 debug --disable-ffplay --disable-indev=sndio --disable-outdev=sndio
 --cc=gcc --enable-fontconfig --enable-frei0r --enable-gnutls --enable-gmp
 --enable-libgme --enable-gray --enable-libaom --enable-libfribidi
 --enable-libass --enable-libvmaf --enable-libfreetype --enable-libmp3lame
 --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg
 --enable-librubberband --enable-libsoxr --enable-libspeex --enable-libsrt
 --enable-libvorbis --enable-libopus --enable-libtheora --enable-libvidstab
 --enable-libvo-amrwbenc --enable-libvpx --enable-libwebp --enable-libx264
 --enable-libx265 --enable-libxml2 --enable-libdav1d --enable-libxvid
 --enable-libzvbi --enable-libzimg
 libavutil      57.  0.100 / 57.  0.100
 libavcodec     59.  1.100 / 59.  1.100
 libavformat    59.  2.101 / 59.  2.101
 libavdevice    59.  0.100 / 59.  0.100
 libavfilter     8.  0.101 /  8.  0.101
 libswscale      6.  0.100 /  6.  0.100
 libswresample   4.  0.100 /  4.  0.100
 libpostproc    56.  0.100 / 56.  0.100
 }}}

 The content piped to stdin is:
 {{{
 ffconcat version 1.0
 file S2bioaerIaLTABx8PcEU0w.1622751258.259273.jpg
 duration 0.19855499267578125
 file S2bioaerIaLTABx8PcEU0w.1622751258.468068.jpg
 duration 0.027949094772338867
 file S2bioaerIaLTABx8PcEU0w.1622751258.496017.jpg
 duration 0.47649693489074707
 file S2bioaerIaLTABx8PcEU0w.1622751258.972514.jpg
 duration 0.13218116760253906
 file S2bioaerIaLTABx8PcEU0w.1622751259.104695.jpg
 duration 0.05051994323730469
 file S2bioaerIaLTABx8PcEU0w.1622751259.155215.jpg
 duration 0.06785297393798828
 file S2bioaerIaLTABx8PcEU0w.1622751259.223068.jpg
 duration 0.0591120719909668
 file S2bioaerIaLTABx8PcEU0w.1622751259.28218.jpg
 duration 0.07902193069458008
 file S2bioaerIaLTABx8PcEU0w.1622751259.361202.jpg
 duration 0.48149991035461426
 file S2bioaerIaLTABx8PcEU0w.1622751259.842702.jpg
 duration 0.5122950077056885
 file S2bioaerIaLTABx8PcEU0w.1622751260.354997.jpg
 duration 0.11454916000366211
 file S2bioaerIaLTABx8PcEU0w.1622751260.469546.jpg
 duration 2.9862449169158936
 file S2bioaerIaLTABx8PcEU0w.1622751263.455791.jpg
 duration 0.09715390205383301
 file S2bioaerIaLTABx8PcEU0w.1622751263.552945.jpg
 duration 0.1610550880432129
 file S2bioaerIaLTABx8PcEU0w.1622751263.552945.jpg
 }}}

 With an error:
 {{{
 [concat @ 0x6323e00] Impossible to open
 'pipe:S2bioaerIaLTABx8PcEU0w.1622751258.259273.jpg'
 pipe:: Invalid data found when processing input
 }}}

 I can fix it by changing the stdin to be a file rather than pipe and
 change the command line to `-i input.txt` rather than `-i -` and remove
 pipe from the protocol_whitelist. But this worked from ffmpeg version 3.3
 through 4.2.2.
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/9277>
FFmpeg <https://ffmpeg.org>
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