#1471 closed defect (fixed)
The creation time in Android video is reported incorrectly.
Reported by: | andreasg | Owned by: | |
---|---|---|---|
Priority: | normal | Component: | avformat |
Version: | git-master | Keywords: | mov creation_time |
Cc: | Blocked By: | ||
Blocking: | Reproduced by developer: | yes | |
Analyzed by developer: | no |
Description
Summary of the bug:
The reported creation time for video taken with a Nexus Galaxy phone (Android 4.0.2) is off by 66 years. As far as I can tell, this is due to the fact that the start of the epoch is assumed to be Jan 1, 1904 while the phone reports it as Jan 1, 1970.
In libformat/mov.c in function mov_read_mvhd, the version is 0 and the 32-bit creation time is 1340225911. In function mov_metadata_creation_time, the difference between the two epochs is subtracted from the time.
It is possible that the Android video just doesn't correctly encode the time but I still want to report this issue.
How to reproduce:
% ffprobe VID_20120620_135828.mp4 ffprobe version N-40739-ge556121 Copyright (c) 2007-2012 the FFmpeg developers built on May 16 2012 11:07:59 with gcc 4.6.3 20120306 (Red Hat 4.6.3-2) configuration: libavutil 51. 53.100 / 51. 53.100 libavcodec 54. 21.101 / 54. 21.101 libavformat 54. 5.100 / 54. 5.100 libavdevice 53. 4.100 / 53. 4.100 libavfilter 2. 74.100 / 2. 74.100 libswscale 2. 1.100 / 2. 1.100 libswresample 0. 11.100 / 0. 11.100 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'VID_20120620_135828.mp4': Metadata: major_brand : isom minor_version : 0 compatible_brands: isom3gp4 creation_time : 1946-06-20 20:58:31 Duration: 00:00:02.24, start: 0.000000, bitrate: 9159 kb/s Stream #0:0(eng): Video: h264 (Baseline) (avc1 / 0x31637661), yuv420p, 1280x720, 8460 kb/s, SAR 65536:65536 DAR 16:9, 29.75 fps, 30 tbr, 90k tbn, 180k tbc Metadata: creation_time : 1946-06-20 20:58:31 handler_name : VideoHandle Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 48000 Hz, mono, s16, 96 kb/s Metadata: creation_time : 1946-06-20 20:58:31 handler_name : SoundHandle
Attachments (1)
Change History (4)
Changed 9 years ago by andreasg
comment:1 Changed 9 years ago by michael
- Component changed from undetermined to avformat
- Keywords mp4 added
- Reproduced by developer set
- Resolution set to fixed
- Status changed from new to closed
- Version changed from unspecified to git-master
Added a workaround
comment:2 Changed 8 years ago by cehoyos
- Keywords mov added; mp4 removed
comment:3 Changed 8 years ago by cehoyos
- Keywords creation_time added
Android video