[gstreamer-bugs] [Bug 503582] New: want to extract Date metadata from AVI

[GStreamer (bugzilla.gnome.org)]

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  GStreamer | don't know | Ver: 0.10.x
           Summary: want to extract Date metadata from AVI
           Product: GStreamer
           Version: 0.10.x
          Platform: Other
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: don't know
        AssignedTo: gstreamer-bugs at lists.sourceforge.net
        ReportedBy: mjc at avtechpulse.com
         QAContact: gstreamer-bugs at lists.sourceforge.net
     GNOME version: 2.19/2.20
   GNOME milestone: Unspecified


I'm trying to modify gthumb to allow it to read video metadata using gstreamer.
It works, but I seem to be missing something - exiftool can extract much more
metadata than gstreamer - like the original recording date. That's a key piece
of metadata that I would like to extract.

For instance, an AVI from my Canon PowerShot SD800IS gives the following 
in exiftool:

[mjc at gormenghast 2007-12]$ exiftool -s -G1 MVI_1148.AVI 
[ExifTool]      ExifToolVersion                 : 7.00
[File]          FileName                        : MVI_1148.AVI
[File]          Directory                       : .
[File]          FileSize                        : 12 MB
[File]          FileModifyDate                  : 2007:12:14 08:41:10
[File]          FileType                        : AVI
[File]          MIMEType                        : video/avi
[RIFF]          FrameRate                       : 30
[RIFF]          MaxDataRate                     : 1965 kB/s
[RIFF]          FrameCount                      : 206
[RIFF]          StreamCount                     : 2
[RIFF]          StreamType                      : Audio
[RIFF]          Codec                           : 
[RIFF]          Quality                         : 10000
[RIFF]          SampleSize                      : 1 byte
[RIFF]          Encoding                        : Microsoft PCM
[RIFF]          NumChannels                     : 1
[RIFF]          SampleRate                      : 11024
[RIFF]          AvgBytesPerSec                  : 11024
[RIFF]          BitsPerSample                   : 8
[RIFF]          DateTimeOriginal                : 2007:12:14 08:41:10
[RIFF]          Software                        : CanonMVI06
[BMP]           ImageWidth                      : 640
[BMP]           ImageHeight                     : 480
[BMP]           Planes                          : 1
[BMP]           BitDepth                        : 24
[BMP]           Compression                     : Unknown (MJPG)
[BMP]           ImageLength                     : 921600
[BMP]           PixelsPerMeterX                 : 0
[BMP]           PixelsPerMeterY                 : 0
[BMP]           NumColors                       : Use BitDepth
[BMP]           NumImportantColors              : All
[Composite]     Duration                        : 6.87s
[Composite]     ImageSize                       : 640x480

(Beware that Exiftool renames all the tags using its own scheme...)

The gstreamer debug output only shows:

Tags: taglist, video-codec=(string)"Motion\ JPEG";
Tags: taglist, audio-codec=(string)"Uncompressed\ 8-bit\ PCM\ audio";
Tags: taglist, encoder=(string)CanonMVI06;

A bit more info (height, width, framerate, etc) is provided by GstStructure.

The source code for my metadata reader is here 
http://svn.gnome.org/viewvc/gthumb/trunk/libgthumb/gth-gstreamer-utils.c?view=markup

If you run gthumb from trunk, pressing Ctrl+2 in the browser mode will show the
file metadata.

Any help would be appreciated!

- Mike


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