[FFmpeg-trac] #11313(undetermined:new): Stream loop VTT subtitles via UDP ( error = Numerical result out of range )

[FFmpeg]

#11313: Stream loop VTT subtitles via UDP ( error = Numerical result out of range )
-------------------------------------+-------------------------------------
             Reporter:  tysonite     |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:               |                  Version:
  undetermined                       |  unspecified
             Keywords:  webvtt       |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 Summary of the bug:

 Looping VTT subtitles via ffmpeg finishes with "Numerical result out of
 range" error right after first iteration.

 How to reproduce:
 {{{
 % ./ffmpeg-master-latest-linux64-gpl/bin/ffmpeg -report -y -stream_loop -1
 -re -i subtitles1.vtt -map 0:s -c:s webvtt -fflags +genpts
 -reset_timestamps 1 -avoid_negative_ts make_zero -f webvtt
 udp://127.0.0.1:1234


 ffmpeg version N-117832-ge9c3698ed2-20241119 Copyright (c) 2000-2024 the
 FFmpeg developers
   built with gcc 14.2.0 (crosstool-NG 1.26.0.120_4d36f27)
   configuration: --prefix=/ffbuild/prefix --pkg-config-flags=--static
 --pkg-config=pkg-config --cross-prefix=x86_64-ffbuild-linux-gnu-
 --arch=x86_64 --target-os=linux --enable-gpl --enable-version3 --disable-
 debug --enable-iconv --enable-zlib --enable-libfreetype --enable-
 libfribidi --enable-gmp --enable-libxml2 --enable-openssl --enable-lzma
 --enable-fontconfig --enable-libharfbuzz --enable-libvorbis --enable-
 opencl --enable-libpulse --enable-libvmaf --enable-libxcb --enable-xlib
 --enable-amf --enable-libaom --enable-libaribb24 --enable-avisynth
 --enable-chromaprint --enable-libdav1d --enable-libdavs2 --enable-
 libdvdread --enable-libdvdnav --disable-libfdk-aac --enable-ffnvcodec
 --enable-cuda-llvm --enable-frei0r --enable-libgme --enable-libkvazaar
 --enable-libaribcaption --enable-libass --enable-libbluray --enable-libjxl
 --enable-libmp3lame --enable-libopus --enable-librist --enable-libssh
 --enable-libtheora --enable-libvpx --enable-libwebp --enable-libzmq
 --enable-lv2 --enable-libvpl --enable-openal --enable-libopencore-amrnb
 --enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg
 --enable-libopenmpt --enable-librav1e --enable-librubberband --disable-
 schannel --enable-sdl2 --enable-libsoxr --enable-libsrt --enable-libsvtav1
 --enable-libtwolame --enable-libuavs3d --enable-libdrm --enable-vaapi
 --enable-libvidstab --enable-vulkan --enable-libshaderc --enable-
 libplacebo --enable-libvvenc --enable-libx264 --enable-libx265 --enable-
 libxavs2 --enable-libxvid --enable-libzimg --enable-libzvbi --extra-
 cflags=-DLIBTWOLAME_STATIC --extra-cxxflags= --extra-libs='-ldl -lgomp'
 --extra-ldflags=-pthread --extra-ldexeflags=-pie --cc=x86_64-ffbuild-
 linux-gnu-gcc --cxx=x86_64-ffbuild-linux-gnu-g++ --ar=x86_64-ffbuild-
 linux-gnu-gcc-ar --ranlib=x86_64-ffbuild-linux-gnu-gcc-ranlib --nm=x86_64
 -ffbuild-linux-gnu-gcc-nm --extra-version=20241119

 [in#0/webvtt @ 0x55dcd5262600] Task finished with error code: -34
 (Numerical result out of range)
 [in#0/webvtt @ 0x55dcd5262600] Terminating thread with return code -34
 (Numerical result out of range)


 }}}

 Log files and subtitles are attached.

 The same happens if any of "-fflags +genpts -reset_timestamps 1
 -avoid_negative_ts make_zero" flag is absent.
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/11313>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker