Server returned 404 Not Found

[gujiwork]

I am using process.run_ Asynchronous records video streams. If the streaming server does not continue streaming due to network or other reasons during the recording process, the status code returned by the process is 0 instead of 404. When I restart the recording client, I can obtain 404 error information, but the 404 error information during the recording process cannot be captured. Is there any way for me to capture Server returned 404 Not Found and restart the recording client?

process = (
    ffmpeg.input(input_stream, **{"t": str(duration), "rw_timeout": "5000000"})
        .output(output_file, **{"c": "copy"})
        .overwrite_output()
)

process = process.run_async(pipe_stdin=True, pipe_stderr=True)

Error Message

ffmpeg version 6.0-tessus  https://evermeet.cx/ffmpeg/  Copyright (c) 2000-2023 the FFmpeg developers
  built with Apple clang version 11.0.0 (clang-1100.0.33.17)
  configuration: --cc=/usr/bin/clang --prefix=/opt/ffmpeg --extra-version=tessus --enable-avisynth --enable-fontconfig --enable-gpl --enable-libaom --enable-libass --enable-libbluray --enable-libdav1d --enable-libfreetype --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libmysofa --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg --enable-libopus --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvmaf --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg --enable-libzmq --enable-libzvbi --enable-version3 --pkg-config-flags=--static --disable-ffplay
  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
[http @ 0x7f7bb9704d00] HTTP error 404 Not Found
http://172.16.18.10:8080/live/33/1ZNBK7G00C00ET.flv: Server returned 404 Not Found