[FFmpeg-trac] #9782(avformat:new): avformat_find_stream_info too slow with open TS stream

FFmpeg trac at avcodec.org
Mon May 16 11:52:48 EEST 2022 

#9782: avformat_find_stream_info too slow with open TS stream
----------------------------------+--------------------------------------
             Reporter:  GJJ       |                     Type:  defect
               Status:  new       |                 Priority:  important
            Component:  avformat  |                  Version:  git-master
             Keywords:            |               Blocked By:
             Blocking:            |  Reproduced by developer:  0
Analyzed by developer:  0         |
----------------------------------+--------------------------------------
 Summary of the bug: avformat_find_stream_info take too long time return,
 when open single video or audio TS stream.

 How to reproduce:
 {{{
 %ffmpeg -i udp://172.16.171.10:50000
 ffmpeg version 5.0-essentials_build-www.gyan.dev Copyright (c) 2000-2022
 the FFmpeg developers
   built with gcc 11.2.0 (Rev5, Built by MSYS2 project)
   configuration: --enable-gpl --enable-version3 --enable-static --disable-
 w32threads --disable-autodetect --enable-fontconfig --enable-iconv
 --enable-gnutls --enable-libxml2 --enable-gmp --enable-lzma --enable-zlib
 --enable-libsrt --enable-libssh --enable-libzmq --enable-avisynth
 --enable-sdl2 --enable-libwebp --enable-libx264 --enable-libx265 --enable-
 libxvid --enable-libaom --enable-libopenjpeg --enable-libvpx --enable-
 libass --enable-libfreetype --enable-libfribidi --enable-libvidstab
 --enable-libvmaf --enable-libzimg --enable-amf --enable-cuda-llvm
 --enable-cuvid --enable-ffnvcodec --enable-nvdec --enable-nvenc --enable-
 d3d11va --enable-dxva2 --enable-libmfx --enable-libgme --enable-libopenmpt
 --enable-libopencore-amrwb --enable-libmp3lame --enable-libtheora
 --enable-libvo-amrwbenc --enable-libgsm --enable-libopencore-amrnb
 --enable-libopus --enable-libspeex --enable-libvorbis --enable-
 librubberband
   libavutil      57. 17.100 / 57. 17.100
   libavcodec     59. 18.100 / 59. 18.100
   libavformat    59. 16.100 / 59. 16.100
   libavdevice    59.  4.100 / 59.  4.100
   libavfilter     8. 24.100 /  8. 24.100
   libswscale      6.  4.100 /  6.  4.100
   libswresample   4.  3.100 /  4.  3.100
   libpostproc    56.  3.100 / 56.  3.100
 [h264 @ 000002aab67f4b00] non-existing PPS 0 referenced
     Last message repeated 1 times
 [h264 @ 000002aab67f4b00] decode_slice_header error
 [h264 @ 000002aab67f4b00] no frame!
 [h264 @ 000002aab67f4b00] non-existing PPS 0 referenced
     Last message repeated 1 times
 [h264 @ 000002aab67f4b00] decode_slice_header error
 [h264 @ 000002aab67f4b00] no frame!
 [h264 @ 000002aab67f4b00] non-existing PPS 0 referenced
     Last message repeated 1 times
 [h264 @ 000002aab67f4b00] decode_slice_header error
 [h264 @ 000002aab67f4b00] no frame!
 [h264 @ 000002aab67f4b00] non-existing PPS 0 referenced
     Last message repeated 1 times
 [h264 @ 000002aab67f4b00] decode_slice_header error
 [h264 @ 000002aab67f4b00] no frame!
 [h264 @ 000002aab67f4b00] non-existing PPS 0 referenced
     Last message repeated 1 times
 [h264 @ 000002aab67f4b00] decode_slice_header error
 [h264 @ 000002aab67f4b00] no frame!
 [h264 @ 000002aab67f4b00] non-existing PPS 0 referenced
     Last message repeated 1 times
 [h264 @ 000002aab67f4b00] decode_slice_header error
 [h264 @ 000002aab67f4b00] no frame!
 [h264 @ 000002aab67f4b00] non-existing PPS 0 referenced
     Last message repeated 1 times
 [h264 @ 000002aab67f4b00] decode_slice_header error
 [h264 @ 000002aab67f4b00] no frame!
 [h264 @ 000002aab67f4b00] non-existing PPS 0 referenced
     Last message repeated 1 times
 [h264 @ 000002aab67f4b00] decode_slice_header error
 [h264 @ 000002aab67f4b00] no frame!
 [h264 @ 000002aab67f4b00] non-existing PPS 0 referenced
     Last message repeated 1 times
 [h264 @ 000002aab67f4b00] decode_slice_header error
 [h264 @ 000002aab67f4b00] no frame!
 [h264 @ 000002aab67f4b00] non-existing PPS 0 referenced
     Last message repeated 1 times
 [h264 @ 000002aab67f4b00] decode_slice_header error
 [h264 @ 000002aab67f4b00] no frame!
 [h264 @ 000002aab67f4b00] non-existing PPS 0 referenced
     Last message repeated 1 times
 [h264 @ 000002aab67f4b00] decode_slice_header error
 [h264 @ 000002aab67f4b00] no frame!
 [h264 @ 000002aab67f4b00] non-existing PPS 0 referenced
     Last message repeated 1 times
 [h264 @ 000002aab67f4b00] decode_slice_header error
 [h264 @ 000002aab67f4b00] no frame!
 [h264 @ 000002aab67f4b00] non-existing PPS 0 referenced
     Last message repeated 1 times
 [h264 @ 000002aab67f4b00] decode_slice_header error
 [h264 @ 000002aab67f4b00] no frame!
 [h264 @ 000002aab67f4b00] non-existing PPS 0 referenced
     Last message repeated 1 times
 [h264 @ 000002aab67f4b00] decode_slice_header error
 [h264 @ 000002aab67f4b00] no frame!
 [h264 @ 000002aab67f4b00] non-existing PPS 0 referenced
     Last message repeated 1 times
 [h264 @ 000002aab67f4b00] decode_slice_header error
 [h264 @ 000002aab67f4b00] no frame!
 [h264 @ 000002aab67f4b00] non-existing PPS 0 referenced
     Last message repeated 1 times
 [h264 @ 000002aab67f4b00] decode_slice_header error
 [h264 @ 000002aab67f4b00] no frame!
 [h264 @ 000002aab67f4b00] non-existing PPS 0 referenced
     Last message repeated 1 times
 [h264 @ 000002aab67f4b00] decode_slice_header error
 [h264 @ 000002aab67f4b00] no frame!
 [h264 @ 000002aab67f4b00] non-existing PPS 0 referenced
     Last message repeated 1 times
 [h264 @ 000002aab67f4b00] decode_slice_header error
 [h264 @ 000002aab67f4b00] no frame!
 [h264 @ 000002aab67f4b00] non-existing PPS 0 referenced
     Last message repeated 1 times
 [h264 @ 000002aab67f4b00] decode_slice_header error
 [h264 @ 000002aab67f4b00] no frame!
 [h264 @ 000002aab67f4b00] non-existing PPS 0 referenced
     Last message repeated 1 times
 [h264 @ 000002aab67f4b00] decode_slice_header error
 [h264 @ 000002aab67f4b00] no frame!
 [h264 @ 000002aab67f4b00] non-existing PPS 0 referenced
     Last message repeated 1 times
 [h264 @ 000002aab67f4b00] decode_slice_header error
 [h264 @ 000002aab67f4b00] no frame!
 [h264 @ 000002aab67f4b00] non-existing PPS 0 referenced
     Last message repeated 1 times
 [h264 @ 000002aab67f4b00] decode_slice_header error
 [h264 @ 000002aab67f4b00] no frame!
 [h264 @ 000002aab67f4b00] non-existing PPS 0 referenced
     Last message repeated 1 times
 [h264 @ 000002aab67f4b00] decode_slice_header error
 [h264 @ 000002aab67f4b00] no frame!
 [h264 @ 000002aab67f4b00] non-existing PPS 0 referenced
     Last message repeated 1 times
 [h264 @ 000002aab67f4b00] decode_slice_header error
 [h264 @ 000002aab67f4b00] no frame!
 [h264 @ 000002aab67f4b00] non-existing PPS 0 referenced
     Last message repeated 1 times
 [h264 @ 000002aab67f4b00] decode_slice_header error
 [h264 @ 000002aab67f4b00] no frame!
 [h264 @ 000002aab67f4b00] non-existing PPS 0 referenced
     Last message repeated 1 times
 [h264 @ 000002aab67f4b00] decode_slice_header error
 [h264 @ 000002aab67f4b00] no frame!
 [h264 @ 000002aab67f4b00] non-existing PPS 0 referenced
     Last message repeated 1 times
 [h264 @ 000002aab67f4b00] decode_slice_header error
 [h264 @ 000002aab67f4b00] no frame!

 Input #0, mpegts, from 'udp://172.16.171.10:50000':
   Duration: N/A, start: 2642.758444, bitrate: N/A
   Program 1
     Metadata:
       service_name    : Service01
       service_provider: FFmpeg
   Stream #0:0[0x100]: Video: h264 (Main) ([27][0][0][0] / 0x001B),
 yuvj420p(pc, bt709, progressive), 1920x1080, 30 tbr, 90k tbn
 }}}

 ref: https://trac.ffmpeg.org/ticket/4090
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/9782>
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