#6232 closed defect (duplicate)
mpegts demuxer cannot get pkt->duration
Reported by: | stevenliu | Owned by: | |
---|---|---|---|
Priority: | normal | Component: | avcodec |
Version: | git-master | Keywords: | h264 |
Cc: | Blocked By: | ||
Blocking: | Reproduced by developer: | no | |
Analyzed by developer: | no |
Description
Summary of the bug:
How to reproduce:
% ffprobe -select_streams v -show_packets ~/test.mpeg |grep duration ffmpeg version : git-master localhost:flvenc liuqi$ ./ffprobe ffprobe version N-83886-g33e997d Copyright (c) 2007-2017 the FFmpeg developers built with Apple LLVM version 8.0.0 (clang-800.0.42.1) configuration: --enable-fontconfig --enable-gpl --enable-libass --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libspeex --enable-libx264 --enable-libx265 --enable-libfdk-aac --enable-version3 --cc='ccache gcc' --enable-nonfree libavutil 55. 48.100 / 55. 48.100 libavcodec 57. 83.100 / 57. 83.100 libavformat 57. 66.104 / 57. 66.104 libavdevice 57. 3.100 / 57. 3.100 libavfilter 6. 76.100 / 6. 76.100 libswscale 4. 3.101 / 4. 3.101 libswresample 2. 4.100 / 2. 4.100 libpostproc 54. 2.100 / 54. 2.100 Simple multimedia streams analyzer usage: ffprobe [OPTIONS] [INPUT_FILE] You have to specify one input file. Use -h to get full help or, even better, run 'man ffprobe'.
Patches should be submitted to the ffmpeg-devel mailing list and not this bug tracker.
Attachments (2)
Change History (10)
Changed 14 months ago by stevenliu
comment:1 follow-up: ↓ 4 Changed 14 months ago by heleppkes
comment:2 Changed 14 months ago by stevenliu
the test input file can be download from: https://pan.baidu.com/s/1miLS5G8
comment:3 Changed 14 months ago by stevenliu
the test input file can be download from: https://pan.baidu.com/s/1miLS5G8
comment:4 in reply to: ↑ 1 ; follow-up: ↓ 5 Changed 14 months ago by stevenliu
Replying to heleppkes:
mpegts as a format just doesn't store a duration. There is no data to provide, so no data to show.
No the audio duration can be get, but video cannot be get
comment:5 in reply to: ↑ 4 ; follow-up: ↓ 6 Changed 14 months ago by heleppkes
Replying to stevenliu:
Replying to heleppkes:
mpegts as a format just doesn't store a duration. There is no data to provide, so no data to show.
No the audio duration can be get, but video cannot be get
The demuxer provides the information thats stored directly in the file on a container level, and there is no duration there, it is not designed to extract the audio duration of every known audio codec. You'll get the audio duration after decoding.
comment:6 in reply to: ↑ 5 Changed 14 months ago by stevenliu
Replying to heleppkes:
Replying to stevenliu:
Replying to heleppkes:
mpegts as a format just doesn't store a duration. There is no data to provide, so no data to show.
No the audio duration can be get, but video cannot be get
The demuxer provides the information thats stored directly in the file on a container level, and there is no duration there, it is not designed to extract the audio duration of every known audio codec. You'll get the audio duration after decoding.
Let me try the other mpegts format:
localhost:flvenc liuqi$ ffprobe -show_packets -select_streams v ~/Movies/Test/M1.mpg |grep duration > the_other_mpegts_have_duration ffprobe version N-83692-gb8a7dcb Copyright (c) 2007-2017 the FFmpeg developers built with Apple LLVM version 8.0.0 (clang-800.0.42.1) configuration: --enable-fontconfig --enable-gpl --enable-libass --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libspeex --enable-libx264 --enable-libx265 --enable-libfdk-aac --enable-version3 --cc='ccache gcc' --enable-nonfree libavutil 55. 47.100 / 55. 47.100 libavcodec 57. 81.100 / 57. 81.100 libavformat 57. 66.102 / 57. 66.102 libavdevice 57. 3.100 / 57. 3.100 libavfilter 6. 74.100 / 6. 74.100 libswscale 4. 3.101 / 4. 3.101 libswresample 2. 4.100 / 2. 4.100 libpostproc 54. 2.100 / 54. 2.100 Input #0, mpegts, from '/Users/liuqi/Movies/Test/M1.mpg': Duration: 00:05:06.21, start: 0.996322, bitrate: 1720 kb/s Program 2 Stream #0:0[0x30]: Video: mpeg1video ([1][0][0][0] / 0x0001), yuv420p(tv), 352x240 [SAR 200:219 DAR 880:657], 1500 kb/s, 29.97 fps, 29.97 tbr, 90k tbn, 29.97 tbc Stream #0:1[0x31]: Audio: mp2 ([3][0][0][0] / 0x0003), 44100 Hz, stereo, s16p, 128 kb/s
I have try the other mpegts, it's can get duration;
the attechment file name : the_other_mpegts_have_duration.txt
Changed 14 months ago by stevenliu
comment:7 Changed 14 months ago by cehoyos
- Component changed from avformat to avcodec
- Keywords h264 added; mpegts duration removed
- Resolution set to duplicate
- Status changed from new to closed
This is a duplicate of other h264-related tickets.
comment:8 Changed 14 months ago by stevenliu
the mpegts file ok: https://pan.baidu.com/s/1bp1SgzH
mpegts as a format just doesn't store a duration. There is no data to provide, so no data to show.