[FFmpeg-trac] #10592(undetermined:new): piped input partial file error

[FFmpeg]

#10592: piped input partial file error
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             Reporter:  Mark          |                     Type:  defect
               Status:  new           |                 Priority:  normal
            Component:  undetermined  |                  Version:  6.0
             Keywords:                |               Blocked By:
             Blocking:                |  Reproduced by developer:  0
Analyzed by developer:  0             |
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 Summary of the bug:

 ffmpeg failes to read file from the piped input

 ffmpeg -i - out.mp3 < in.mp4 # it works perfectly

 cat in.mp4 | ffmpeg -i - out.mp3 # fails with the error below.

 Why do I need it:
 I'm trying to convert to pcm_s16le file while downloading it from the
 internet. And this is the simplest example to reproduce the issue. cat is
 the replacement of wget/curl.

 How to reproduce:
 {{{
 % cat in.mp4 | ffmpeg -i - out.mp3
 ffmpeg version 6.0 Copyright (c) 2000-2023 the FFmpeg developers
   built with Apple clang version 14.0.3 (clang-1403.0.22.14.1)
   configuration: --prefix=/usr/local/Cellar/ffmpeg/6.0_1 --enable-shared
 --enable-pthreads --enable-version3 --cc=clang --host-cflags= --host-
 ldflags= --enable-ffplay --enable-gnutls --enable-gpl --enable-libaom
 --enable-libaribb24 --enable-libbluray --enable-libdav1d --enable-
 libmp3lame --enable-libopus --enable-librav1e --enable-librist --enable-
 librubberband --enable-libsnappy --enable-libsrt --enable-libsvtav1
 --enable-libtesseract --enable-libtheora --enable-libvidstab --enable-
 libvmaf --enable-libvorbis --enable-libvpx --enable-libwebp --enable-
 libx264 --enable-libx265 --enable-libxml2 --enable-libxvid --enable-lzma
 --enable-libfontconfig --enable-libfreetype --enable-frei0r --enable-
 libass --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-
 libopenjpeg --enable-libspeex --enable-libsoxr --enable-libzmq --enable-
 libzimg --disable-libjack --disable-indev=jack --enable-videotoolbox
 --enable-audiotoolbox
   libavutil      58.  2.100 / 58.  2.100
   libavcodec     60.  3.100 / 60.  3.100
   libavformat    60.  3.100 / 60.  3.100
   libavdevice    60.  1.100 / 60.  1.100
   libavfilter     9.  3.100 /  9.  3.100
   libswscale      7.  1.100 /  7.  1.100
   libswresample   4. 10.100 /  4. 10.100
   libpostproc    57.  1.100 / 57.  1.100
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fe6f5704b80] stream 0, offset 0x2c: partial
 file
 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'fd:':
   Metadata:
     major_brand     : isom
     minor_version   : 512
     compatible_brands: isomiso2mp41
     encoder         : Lavf60.3.100
   Duration: 00:00:08.00, start: 0.000000, bitrate: N/A
   Stream #0:0[0x1](eng): Audio: aac (mp4a / 0x6134706D), 48000 Hz, mono,
 fltp, 69 kb/s (default)
     Metadata:
       handler_name    : SoundHandle
       vendor_id       : [0][0][0][0]
 Stream mapping:
   Stream #0:0 -> #0:0 (aac (native) -> mp3 (libmp3lame))
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fe6f5704b80] stream 0, offset 0x2c: partial
 file
 Error demuxing input file 0: Invalid data found when processing input
 fd:: Invalid data found when processing input
 Output #0, mp3, to 'out.mp3':
   Metadata:
     major_brand     : isom
     minor_version   : 512
     compatible_brands: isomiso2mp41
     TSSE            : Lavf60.3.100
   Stream #0:0(eng): Audio: mp3, 48000 Hz, mono, fltp (default)
     Metadata:
       handler_name    : SoundHandle
       vendor_id       : [0][0][0][0]
       encoder         : Lavc60.3.100 libmp3lame
 size=       0kB time=-577014:32:22.77 bitrate=N/A speed=N/A    ed=N/A
 video:0kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB
 muxing overhead: unknown
 Output file is empty, nothing was encoded (check -ss / -t / -frames
 parameters if used)
 }}}
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/10592>
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