describing multimedia content
Brad Fuller
brad at sonaural.com
Mon Mar 14 00:07:39 UTC 2005
Martin Kuball wrote:
>Hi!
>
>It's been a little bit quiet here concerning the multimeda issues.
>
I've been out all week at the GDC. I'll get back into the swing by the
middle of this week.
>Now
>it the past few days I thought about a an issue we have not yet put
>on our list. Besides reading and writing audio and video data I would
>like to have a database that describes all the bits and peaces on my
>computer and external medias. And for that we need a good object
>model that describes the content and which can be made persistent
>(either in a relational db or in an object db).
>
>So what entities do we need? How do they relate to each other and how
>does existing stuff like id3 tags (is there more?) fit into it. At
>least there should be things like artists, genres, types and textual
>descriptions. Additionaly you would like to have thumbnails for
>images and videos and maybe low-bitrate samples of audio to give a
>quick info about the actual content.
>
>So, any ideas?
>
>
For audio, there are the typical (some of these are from Sony products,
but important none the less):
Filename
Location
Filesize
Last Saved
File type (Wave, SMF, etc)
Audio Format (ADPCM, uncompressed, etc.)
Audio Attributes (44k/16-bit)
Length (could be samples)
ACID Chunk?
SMPTE:
Loop(s): (where are the markers, is it a one shot, etc.)
Regions/Markers
Any Additional chunks (which would be important for items such as XMF or
iXMF)
Sector aligned?
Here's Sony's Summary:
Item
Description
Title
Enter the title of the project.
Subject
Enter name of the artist who performed in the project.
Engineer
Enter the name of the person who engineered the project.
Copyright
Enter copyright information about the project.
Comments
Enter any comments you want to associate with the project.
Extended
Click to display the Extended Summary
<mk:@MSITStore:C:%5CProgram%20Files%5CSony%5CShared%20Plug-Ins%5CHelp%20Files%5Cforge70.chm::/Extended_Summary_Dialog.htm>
dialog.
Load
Click to reset the current file's summary information fields to the
default settings. The default values can be set in the Extended Summary
dialog.
Picture
Click to display the Open Picture dialog, where you can select an icon,
bitmap, or cursor to be attached to the current file.
<javascript:kadovTextPopup()>
Use the Format tab to change the data format of the current data window.
For more information about data formats, click here
<mk:@MSITStore:C:%5CProgram%20Files%5CSony%5CShared%20Plug-Ins%5CHelp%20Files%5Cforge70.chm::/Changing_Sound_Formats.htm>.
Item
Description
Sample rate
Choose a sample rate from the drop-down list or enter a value in the
edit box.
This setting will not resample
<mk:@MSITStore:C:%5CProgram%20Files%5CSony%5CShared%20Plug-Ins%5CHelp%20Files%5Cforge70.chm::/Resample.htm>
the sound file. If the playback rate is different from the originally
recorded rate, the pitch will vary unless the file is resampled.
Bit depth
Choose a bit depth from the drop-down list to specify the number of bits
used to store each sample value.
Channels
Click the Mono or Stereo radio button to select the number of tracks
stored in the file.
Use the Channel Converter
<mk:@MSITStore:C:%5CProgram%20Files%5CSony%5CShared%20Plug-Ins%5CHelp%20Files%5Cforge70.chm::/Channel_Converter.htm>
to perform advanced channel mixing.
Source
Displays the sample rate, bit depth, and number of channels in the
source file.
Process/DSP
Displays the sample rate, bit depth, and number of channels used when
processing your file.
Playback
Displays the sample rate, bit depth, and number of channels that will be
used for playback.
Cursor position
Displays the cursor position in the sound file using the current status
format
<mk:@MSITStore:C:%5CProgram%20Files%5CSony%5CShared%20Plug-Ins%5CHelp%20Files%5Cforge70.chm::/Choosing_a_Status_Format.htm>.
Sample value
Displays the sample value at the current cursor position in the sound file:
*
In 32-bit audio, these values range from -2147483648 to 2147483647.
*
In 24-bit audio, they range from -8388608 to 8388607.
*
In 16-bit audio, they range from -32768 to 32767.
*
In 8-bit audio, they range from -128 to 127.
Sound data size
Displays the amount of disk space being used by the sound data.
Undo buffers
Displays the number of undo buffers that exist for the sound file and
the amount of disk space they consume.
Redo buffers
Displays the number of redo buffers that exist for the sound file and
the amount of disk space they consume.
Sony's Format:
Item
Description
Sample rate
Bit depth
specify the number of bits used to store each sample value.
Channels
Source
Displays the sample rate, bit depth, and number of channels in the
source file.
Process/DSP
Displays the sample rate, bit depth, and number of channels used when
processing your file.
Playback
Displays the sample rate, bit depth, and number of channels that will be
used for playback.
Cursor position
Displays the cursor position in the sound file using the current status
format
<mk:@MSITStore:C:%5CProgram%20Files%5CSony%5CShared%20Plug-Ins%5CHelp%20Files%5Cforge70.chm::/Choosing_a_Status_Format.htm>.
Sample value
Displays the sample value at the current cursor position in the sound file:
*
In 32-bit audio, these values range from -2147483648 to 2147483647.
*
In 24-bit audio, they range from -8388608 to 8388607.
*
In 16-bit audio, they range from -32768 to 32767.
*
In 8-bit audio, they range from -128 to 127.
Sound data size
Displays the amount of disk space being used by the sound data.
Undo buffers
Displays the number of undo buffers that exist for the sound file and
the amount of disk space they consume.
Redo buffers
Displays the number of redo buffers that exist for the sound file and
the amount of disk space they consume.
Just for the record, here is the extended summary list in sound forge:
Item
Description
IARL Archival Location
Indicates where the subject of the file is archived.
IART Artist
The artist of the original subject of the file.
ICMS Commissioned
The name of the person or organization that commissioned the subject of
the file.
ICMT Comments
General comments about the file or the subject of the file. If the
comment is several sentences long, end each sentence with a period. Do
not include new-line characters.
ICOP Copyright
Copyright information for the file. For example, © Copyright 2003 Sony
Pictures Digital Inc. If there are multiple copyrights, separate them by
a semicolon followed by a space.
ICRD Creation Date
The date the subject of the file was created. List dates in
year-month-day format, padding one-digit months and days with a zero on
the left. For example, 1964-03-02 for March 2, 1964.
ICRP Cropped
Describes whether an image or sound has been cropped and, if so, how it
was cropped. For example, Third movement, first through fourth bars.
IDIM Dimensions
The size of the original subject of the file. For example, 8.5 in h, 11
in w.
IDPI Dots Per Inch
The dots-per-inch setting of the digitizer used to produce the file.
IENG Engineer
The name of the engineer who worked on the file. If there are multiple
engineers, separate the names by a semicolon and a blank: Sayre, Jack;
Feith, John.
IGNR Genre
Describes the classification of the original work.
IKEY Keywords
Separate multiple keywords with a semicolon and a blank: Madison; aerial
view; scenery.
ILGT Lightness
Describes the changes in lightness settings on the digitizer required to
produce the file. The format of this information depends on hardware used.
IMED Medium
Describes the format of the original subject of the file.
INAM Name/Title
The title of the subject of the file, such as Madison From Above.
IPLT Palette Setting
The number of colors requested when digitizing an image.
IPRD Product
The name of the title the file was originally intended for, such as
Encyclopedia of Midwest Geography.
ISBJ Subject
Describes the contents of the file, such as Aerial view of Madison.
ISFT Software
The name of the software package used to create the file.
ISHP Sharpness
Identifies the changes in sharpness for the digitizer required to
produce the file. The format of this information depends on the hardware
used.
ISRC Source
The name of the person or organization who supplied the original subject
of the file.
ISRF Source Form
The original form of the material that was digitized, such as slide,
paper, map, and so forth. This is not necessarily the same as IMED.
ITCH Technician
The technician who digitized the file.
DISP Sound Scheme Title
Sets the title that is displayed for Microsoft Sound Systems.
Video suggestions in the next msg
--
________________________________
Hear us online: www.Sonaural.com
Brad Fuller
(408) 799-6124
** Sonaural Audio Studios **
(408) 799-6123 West San Jose
(408) 799-6124 Cambrian
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