#10819: start_time overflow after 95379 seconds
-------------------------------------+-------------------------------------
Reporter: Alex | Type: defect
Kapustin |
Status: new | Priority: normal
Component: | Version: 6.1
undetermined |
Keywords: start_time, | Blocked By:
HLS |
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
-------------------------------------+-------------------------------------
Summary of the bug: looks like it's not possible to have start_time after
95379. It resets.
How to reproduce:
{{{
ffmpeg -y -fflags nobuffer \
-v 9 -loglevel 99 \
-rtsp_transport tcp \
-i 'rtsp://login:pass@host:554/cam/realmonitor?channel=9&subtype=1' \
-use_wallclock_as_timestamps 1 \
-reset_timestamps 1 \
-avoid_negative_ts 1 \
-vcodec copy \
-movflags frag_keyframe+empty_moov+genpts+discardcorrupted \
-hls_flags append_list \
-f hls \
-segment_list_flags live \
-output_ts_offset 95379 \
-hls_time 1 \
-hls_list_size 3 \
-hls_segment_filename ./v9/%06d.ts ./v9/index.m3u8
Wait 10 seconds and interrupt command.
Then:
$ ffprobe -v error -show_entries format=start_time,duration -of
default=noprint_wrappers=1:nokey=1 000000.ts
95383.420000
1.860011
$ ffprobe -v error -show_entries format=start_time,duration,start_pts -of
default=noprint_wrappers=1:nokey=1 000001.ts
-58.297689 <- overflow
1.860011
$ ffmpeg version
ffmpeg version n6.1.1 Copyright (c) 2000-2023 the FFmpeg developers
built with gcc 13.2.1 (GCC) 20230801
configuration: --prefix=/usr --disable-debug --disable-static --disable-
stripping --enable-amf --enable-avisynth --enable-cuda-llvm --enable-lto
--enable-fontconfig --enable-frei0r --enable-gmp --enable-gnutls --enable-
gpl --enable-ladspa --enable-libaom --enable-libass --enable-libbluray
--enable-libbs2b --enable-libdav1d --enable-libdrm --enable-libfreetype
--enable-libfribidi --enable-libgsm --enable-libharfbuzz --enable-
libiec61883 --enable-libjack --enable-libjxl --enable-libmodplug --enable-
libmp3lame --enable-libopencore_amrnb --enable-libopencore_amrwb --enable-
libopenjpeg --enable-libopenmpt --enable-libopus --enable-libplacebo
--enable-libpulse --enable-librav1e --enable-librsvg --enable-
librubberband --enable-libsnappy --enable-libsoxr --enable-libspeex
--enable-libsrt --enable-libssh --enable-libsvtav1 --enable-libtheora
--enable-libv4l2 --enable-libvidstab --enable-libvmaf --enable-libvorbis
--enable-libvpl --enable-libvpx --enable-libwebp --enable-libx264
--enable-libx265 --enable-libxcb --enable-libxml2 --enable-libxvid
--enable-libzimg --enable-nvdec --enable-nvenc --enable-opencl --enable-
opengl --enable-shared --enable-version3 --enable-vulkan
libavutil 58. 29.100 / 58. 29.100
libavcodec 60. 31.102 / 60. 31.102
libavformat 60. 16.100 / 60. 16.100
libavdevice 60. 3.100 / 60. 3.100
libavfilter 9. 12.100 / 9. 12.100
libswscale 7. 5.100 / 7. 5.100
libswresample 4. 12.100 / 4. 12.100
libpostproc 57. 3.100 / 57. 3.100
[AVFormatContext @ 0x5dfd110c9140] Unable to choose an output format for
'version'; use a standard extension for the filename or specify the format
manually.
[out#0 @ 0x5dfd110c9040] Error initializing the muxer for version: Invalid
argument
Error opening output file version.
Error opening output files: Invalid argument
}}}
Patches should be submitted to the ffmpeg-devel mailing list and not this
bug tracker.
--
Ticket URL: <https://trac.ffmpeg.org/ticket/10819>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker
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