[FFmpeg-trac] #4789(undetermined:new): v4l2 -ts abs not always working
FFmpeg
trac at avcodec.org
Fri Aug 21 11:25:58 CEST 2015
#4789: v4l2 -ts abs not always working
--------------------------------------+----------------------------------
Reporter: basinilya | Type: defect
Status: new | Priority: normal
Component: undetermined | Version: 2.7
Keywords: | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
--------------------------------------+----------------------------------
Summary of the bug:
When capturing from stk1160-based DVR, frames PTS start with zero
regardless of -ts option.
How to reproduce:
Not sure, whether it's possible without the device.
The issue occurs on my laptop with 32bit Arch Linux.
Tried with v4l2loopback on vbox, but PTS were correct.
{{{
[il at mar ~]$ ffmpeg -loglevel info -y -f video4linux2 -ts default -t 0.2 -i
/dev/video0 -vf "showinfo" -f rawvideo - >/dev/null
ffmpeg version 2.7.2 Copyright (c) 2000-2015 the FFmpeg developers
built with gcc 5.2.0 (GCC)
configuration: --prefix=/usr --disable-debug --disable-static --disable-
stripping --enable-avisynth --enable-avresample --enable-fontconfig
--enable-gnutls --enable-gpl --enable-libass --enable-libbluray --enable-
libfreetype --enable-libfribidi --enable-libgsm --enable-libmodplug
--enable-libmp3lame --enable-libopencore_amrnb --enable-libopencore_amrwb
--enable-libopenjpeg --enable-libopus --enable-libpulse --enable-
libschroedinger --enable-libsoxr --enable-libspeex --enable-libssh
--enable-libtheora --enable-libv4l2 --enable-libvorbis --enable-libvpx
--enable-libwebp --enable-libx264 --enable-libx265 --enable-libxvid
--enable-shared --enable-version3 --enable-x11grab
libavutil 54. 27.100 / 54. 27.100
libavcodec 56. 41.100 / 56. 41.100
libavformat 56. 36.100 / 56. 36.100
libavdevice 56. 4.100 / 56. 4.100
libavfilter 5. 16.101 / 5. 16.101
libavresample 2. 1. 0 / 2. 1. 0
libswscale 3. 1.101 / 3. 1.101
libswresample 1. 2.100 / 1. 2.100
libpostproc 53. 3.100 / 53. 3.100
Input #0, video4linux2,v4l2, from '/dev/video0':
Duration: N/A, start: 83594.430406, bitrate: 165888 kb/s
Stream #0:0: Video: rawvideo (UYVY / 0x59565955), uyvy422, 720x576,
165888 kb/s, 25 fps, 25 tbr, 1000k tbn, 1000k tbc
[Parsed_showinfo_0 @ 0x997c380] config in time_base: 1/1000000,
frame_rate: 25/1
[Parsed_showinfo_0 @ 0x997c380] config out time_base: 0/0, frame_rate: 0/0
Output #0, rawvideo, to 'pipe:':
Metadata:
encoder : Lavf56.36.100
Stream #0:0: Video: rawvideo (UYVY / 0x59565955), uyvy422, 720x576,
q=2-31, 200 kb/s, 25 fps, 25 tbn, 25 tbc
Metadata:
encoder : Lavc56.41.100 rawvideo
Stream mapping:
Stream #0:0 -> #0:0 (rawvideo (native) -> rawvideo (native))
Press [q] to stop, [?] for help
[Parsed_showinfo_0 @ 0x997c380] n: 0 pts: 0 pts_time:0 pos:
-1 fmt:uyvy422 sar:0/1 s:720x576 i:P iskey:1 type:I checksum:3AB03E64
plane_checksum:[3AB03E64] mean:[133] stdev:[19.0]
[Parsed_showinfo_0 @ 0x997c380] n: 1 pts: 40025 pts_time:0.040025 pos:
-1 fmt:uyvy422 sar:0/1 s:720x576 i:P iskey:1 type:I checksum:8139611B
plane_checksum:[8139611B] mean:[133] stdev:[19.0]
[Parsed_showinfo_0 @ 0x997c380] n: 2 pts: 80026 pts_time:0.080026 pos:
-1 fmt:uyvy422 sar:0/1 s:720x576 i:P iskey:1 type:I checksum:CC8E5A2F
plane_checksum:[CC8E5A2F] mean:[133] stdev:[19.0]
[Parsed_showinfo_0 @ 0x997c380] n: 3 pts: 120026 pts_time:0.120026 pos:
-1 fmt:uyvy422 sar:0/1 s:720x576 i:P iskey:1 type:I checksum:15DF85CC
plane_checksum:[15DF85CC] mean:[133] stdev:[19.0]
[Parsed_showinfo_0 @ 0x997c380] n: 4 pts: 160026 pts_time:0.160026 pos:
-1 fmt:uyvy422 sar:0/1 s:720x576 i:P iskey:1 type:I checksum:B12C62CE
plane_checksum:[B12C62CE] mean:[133] stdev:[19.0]
frame= 5 fps=0.0 q=0.0 Lsize= 4050kB time=00:00:00.20
bitrate=165888.0kbits/s
video:4050kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB
muxing overhead: 0.000000%
[il at mar ~]$ ffmpeg -loglevel info -y -f video4linux2 -ts abs -t 0.2 -i
/dev/video0 -vf "showinfo" -f rawvideo - >/dev/null
ffmpeg version 2.7.2 Copyright (c) 2000-2015 the FFmpeg developers
built with gcc 5.2.0 (GCC)
configuration: --prefix=/usr --disable-debug --disable-static --disable-
stripping --enable-avisynth --enable-avresample --enable-fontconfig
--enable-gnutls --enable-gpl --enable-libass --enable-libbluray --enable-
libfreetype --enable-libfribidi --enable-libgsm --enable-libmodplug
--enable-libmp3lame --enable-libopencore_amrnb --enable-libopencore_amrwb
--enable-libopenjpeg --enable-libopus --enable-libpulse --enable-
libschroedinger --enable-libsoxr --enable-libspeex --enable-libssh
--enable-libtheora --enable-libv4l2 --enable-libvorbis --enable-libvpx
--enable-libwebp --enable-libx264 --enable-libx265 --enable-libxvid
--enable-shared --enable-version3 --enable-x11grab
libavutil 54. 27.100 / 54. 27.100
libavcodec 56. 41.100 / 56. 41.100
libavformat 56. 36.100 / 56. 36.100
libavdevice 56. 4.100 / 56. 4.100
libavfilter 5. 16.101 / 5. 16.101
libavresample 2. 1. 0 / 2. 1. 0
libswscale 3. 1.101 / 3. 1.101
libswresample 1. 2.100 / 1. 2.100
libpostproc 53. 3.100 / 53. 3.100
[video4linux2,v4l2 @ 0x9e76ae0] Detected monotonic timestamps, converting
Input #0, video4linux2,v4l2, from '/dev/video0':
Duration: N/A, start: 1440149031.144507, bitrate: 165888 kb/s
Stream #0:0: Video: rawvideo (UYVY / 0x59565955), uyvy422, 720x576,
165888 kb/s, 25 fps, 25 tbr, 1000k tbn, 1000k tbc
[Parsed_showinfo_0 @ 0x9e67380] config in time_base: 1/1000000,
frame_rate: 25/1
[Parsed_showinfo_0 @ 0x9e67380] config out time_base: 0/0, frame_rate: 0/0
Output #0, rawvideo, to 'pipe:':
Metadata:
encoder : Lavf56.36.100
Stream #0:0: Video: rawvideo (UYVY / 0x59565955), uyvy422, 720x576,
q=2-31, 200 kb/s, 25 fps, 25 tbn, 25 tbc
Metadata:
encoder : Lavc56.41.100 rawvideo
Stream mapping:
Stream #0:0 -> #0:0 (rawvideo (native) -> rawvideo (native))
Press [q] to stop, [?] for help
[Parsed_showinfo_0 @ 0x9e67380] n: 0 pts: 0 pts_time:0 pos:
-1 fmt:uyvy422 sar:0/1 s:720x576 i:P iskey:1 type:I checksum:4AE93264
plane_checksum:[4AE93264] mean:[133] stdev:[19.0]
[Parsed_showinfo_0 @ 0x9e67380] n: 1 pts: 40010 pts_time:0.04001 pos:
-1 fmt:uyvy422 sar:0/1 s:720x576 i:P iskey:1 type:I checksum:BCAC168B
plane_checksum:[BCAC168B] mean:[133] stdev:[19.0]
[Parsed_showinfo_0 @ 0x9e67380] n: 2 pts: 80043 pts_time:0.080043 pos:
-1 fmt:uyvy422 sar:0/1 s:720x576 i:P iskey:1 type:I checksum:23F7AA94
plane_checksum:[23F7AA94] mean:[133] stdev:[19.0]
[Parsed_showinfo_0 @ 0x9e67380] n: 3 pts: 120016 pts_time:0.120016 pos:
-1 fmt:uyvy422 sar:0/1 s:720x576 i:P iskey:1 type:I checksum:C91BC157
plane_checksum:[C91BC157] mean:[133] stdev:[19.0]
[Parsed_showinfo_0 @ 0x9e67380] n: 4 pts: 160042 pts_time:0.160042 pos:
-1 fmt:uyvy422 sar:0/1 s:720x576 i:P iskey:1 type:I checksum:1EB54BC1
plane_checksum:[1EB54BC1] mean:[133] stdev:[19.0]
frame= 5 fps=0.0 q=0.0 Lsize= 4050kB time=00:00:00.20
bitrate=165888.0kbits/s
video:4050kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB
muxing overhead: 0.000000%
[il at mar ~]$ ffmpeg -loglevel info -y -f video4linux2 -ts mono2abs -t 0.2
-i /dev/video0 -vf "showinfo" -f rawvideo - >/dev/null
ffmpeg version 2.7.2 Copyright (c) 2000-2015 the FFmpeg developers
built with gcc 5.2.0 (GCC)
configuration: --prefix=/usr --disable-debug --disable-static --disable-
stripping --enable-avisynth --enable-avresample --enable-fontconfig
--enable-gnutls --enable-gpl --enable-libass --enable-libbluray --enable-
libfreetype --enable-libfribidi --enable-libgsm --enable-libmodplug
--enable-libmp3lame --enable-libopencore_amrnb --enable-libopencore_amrwb
--enable-libopenjpeg --enable-libopus --enable-libpulse --enable-
libschroedinger --enable-libsoxr --enable-libspeex --enable-libssh
--enable-libtheora --enable-libv4l2 --enable-libvorbis --enable-libvpx
--enable-libwebp --enable-libx264 --enable-libx265 --enable-libxvid
--enable-shared --enable-version3 --enable-x11grab
libavutil 54. 27.100 / 54. 27.100
libavcodec 56. 41.100 / 56. 41.100
libavformat 56. 36.100 / 56. 36.100
libavdevice 56. 4.100 / 56. 4.100
libavfilter 5. 16.101 / 5. 16.101
libavresample 2. 1. 0 / 2. 1. 0
libswscale 3. 1.101 / 3. 1.101
libswresample 1. 2.100 / 1. 2.100
libpostproc 53. 3.100 / 53. 3.100
[video4linux2,v4l2 @ 0x9e5cae0] Detected monotonic timestamps, converting
Input #0, video4linux2,v4l2, from '/dev/video0':
Duration: N/A, start: 1440149036.582784, bitrate: 165888 kb/s
Stream #0:0: Video: rawvideo (UYVY / 0x59565955), uyvy422, 720x576,
165888 kb/s, 25 fps, 25 tbr, 1000k tbn, 1000k tbc
[Parsed_showinfo_0 @ 0x9e4d380] config in time_base: 1/1000000,
frame_rate: 25/1
[Parsed_showinfo_0 @ 0x9e4d380] config out time_base: 0/0, frame_rate: 0/0
Output #0, rawvideo, to 'pipe:':
Metadata:
encoder : Lavf56.36.100
Stream #0:0: Video: rawvideo (UYVY / 0x59565955), uyvy422, 720x576,
q=2-31, 200 kb/s, 25 fps, 25 tbn, 25 tbc
Metadata:
encoder : Lavc56.41.100 rawvideo
Stream mapping:
Stream #0:0 -> #0:0 (rawvideo (native) -> rawvideo (native))
Press [q] to stop, [?] for help
[Parsed_showinfo_0 @ 0x9e4d380] n: 0 pts: 0 pts_time:0 pos:
-1 fmt:uyvy422 sar:0/1 s:720x576 i:P iskey:1 type:I checksum:2ABDB2D5
plane_checksum:[2ABDB2D5] mean:[133] stdev:[19.0]
[Parsed_showinfo_0 @ 0x9e4d380] n: 1 pts: 40027 pts_time:0.040027 pos:
-1 fmt:uyvy422 sar:0/1 s:720x576 i:P iskey:1 type:I checksum:3EE35436
plane_checksum:[3EE35436] mean:[133] stdev:[19.0]
[Parsed_showinfo_0 @ 0x9e4d380] n: 2 pts: 80018 pts_time:0.080018 pos:
-1 fmt:uyvy422 sar:0/1 s:720x576 i:P iskey:1 type:I checksum:15E5CFF4
plane_checksum:[15E5CFF4] mean:[133] stdev:[19.0]
[Parsed_showinfo_0 @ 0x9e4d380] n: 3 pts: 120039 pts_time:0.120039 pos:
-1 fmt:uyvy422 sar:0/1 s:720x576 i:P iskey:1 type:I checksum:2A4976EA
plane_checksum:[2A4976EA] mean:[133] stdev:[19.0]
[Parsed_showinfo_0 @ 0x9e4d380] n: 4 pts: 160020 pts_time:0.16002 pos:
-1 fmt:uyvy422 sar:0/1 s:720x576 i:P iskey:1 type:I checksum:E105B4F8
plane_checksum:[E105B4F8] mean:[133] stdev:[19.0]
frame= 5 fps=0.0 q=0.0 Lsize= 4050kB time=00:00:00.20
bitrate=165888.0kbits/s
video:4050kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB
muxing overhead: 0.000000%
}}}
--
Ticket URL: <https://trac.ffmpeg.org/ticket/4789>
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