[Metadata] Technical & other metadata

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Schulte  Olaf A. Schulte Olaf A.
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[Metadata] Technical & other metadata

Dear All

With respect to technical (!) metadata Matterhorn will be able to extract, MediaInfo is the relevant source

http://mediainfo.sourceforge.net/en

as it is being used to analyze tracks and return technical details.

Brian expressed interest in having the distribution formats available as metadata; Brian, could you let us know what format that information should have? Is "M4V" sufficient or would you expect this to be combined with technical data on the quality of the distribution formats (resolution, fps etc.)?

Regards

Olaf A.
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Brian O'Hagan Brian O'Hagan
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Re: [Metadata] Technical & other metadata


On May 3, 2010, at 6:55 PM, Schulte Olaf A. wrote:

Brian expressed interest in having the distribution formats available as metadata; Brian, could you let us know what format that information should have? Is "M4V" sufficient or would you expect this to be combined with technical data on the quality of the distribution formats (resolution, fps etc.)?

Thanks for following up on this. Olaf.  

I'd suggest the former: format with technical data on the quality of the distribution formats.  But would also be interested from others on the list in regard to the importance of technical metadata.

I've just looked over some notes I have here when our group was investigating technical data and PBCore.  While PBCore is not of importance to this topic, here are some technical metadata that would be helpful to collect, that that mediainfo might be able to be used in collecting(?):

videoCodec
audioCodec
audioChannels

dateCreated
dateIssued ie. date published
formatMediaType
formatGenerations ie. how many derivatives separates this asset from the source
formatStandard 
formatEncoding
formatFileSize
formatDuration
formatDataRate
formatSamplingRate
formatAspectRatio
formatFrameRate
formatTracks
dateAvailableStart
dateAvailableEnd

IfChapters... number of chapters, chapters file format
IfSubtitles.... subtitle file format, subtitle file size, number of lines

---------------------------------

Brian O'Hagan

Center for New Media Teaching and Learning

Columbia University

[hidden email]

http://ccnmtl.columbia.edu

212.854.4429








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Fransward Fransward
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Re: [Metadata] Technical & other metadata

In reply to this post by Schulte Olaf A.
Dear Olaf, All,

On 5/4/10 12:55 AM, Schulte Olaf A. wrote:
> Dear All
>
> With respect to technical (!) metadata Matterhorn will be able to extract, MediaInfo is the relevant source
>
> http://mediainfo.sourceforge.net/en
>
> as it is being used to analyze tracks and return technical details.
>
> Brian expressed interest in having the distribution formats available as metadata; Brian, could you let us know what format that information should have? Is "M4V" sufficient or would you expect this to be combined with technical data on the quality of the distribution formats (resolution, fps etc.)?

My name isn't Brian ;-) , nevertheless I would suggest to store more
relevant technical metadata.

For example we are storing the following data in respect to the
technical details:


          <metadata>
            <video_codec>h264</video_codec>
            <colorspace>yuv420p</colorspace>
            <width>352</width>
            <height>288</height>
            <fps>25</fps>
            <audio_codec>aac</audio_codec>
            <sample_rate>44100</sample_rate>
            <channels>stereo</channels>
            <file_duration>00:01:06.06</file_duration>
            <container_type>mov;mp4;m4a;3gp;3g2;mj2</container_type>
            <bitrate>591</bitrate>
            <bpp>0.23</bpp>
            <filesize>4885989</filesize>
            <mime_type>video/mp4</mime_type>
            <created>2010-04-20 14:52:08</created>
            <changed>2010-04-20 14:52:08</changed>
            <is_hinted>FALSE</is_hinted>
            <is_inserted_md>FALSE</is_inserted_md>
          </metadata>

REF:
http://mediamosa.org/trac/browser/mediamosa_snapshot_2-x/sites/all/modules/mediamosa/core/asset/mediafile/metadata

Regards, Frans

>
> Regards
>
> Olaf A.
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--
Frans Ward
Advanced Services, Technical Product Manager MediaMosa/VP-Core
Tel: +31 30 2305384   Mob: +31 622803444   Fax: +31 30 2305329
SURFnet -  POBox 19035 -  NL-3501 DA Utrecht - The Netherlands
www.surfnet.nl  - We make innovation work -  www.mediamosa.org

 There cannot be a crisis today. My schedule is already full

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Brian O'Hagan Brian O'Hagan
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Re: [Metadata] Technical & other metadata

Ps. +1 on Fran's example, as I see many overlaps in what our group would also prefer to collect & store!

/Bri

On May 4, 2010, at 10:08 AM, Frans Ward wrote:

For example we are storing the following data in respect to the
technical details:


         <metadata>
           <video_codec>h264</video_codec>
           <colorspace>yuv420p</colorspace>
           <width>352</width>
           <height>288</height>
           <fps>25</fps>
           <audio_codec>aac</audio_codec>
           <sample_rate>44100</sample_rate>
           <channels>stereo</channels>
           <file_duration>00:01:06.06</file_duration>
           <container_type>mov;mp4;m4a;3gp;3g2;mj2</container_type>
           <bitrate>591</bitrate>
           <bpp>0.23</bpp>
           <filesize>4885989</filesize>
           <mime_type>video/mp4</mime_type>
           <created>2010-04-20 14:52:08</created>
           <changed>2010-04-20 14:52:08</changed>
           <is_hinted>FALSE</is_hinted>
           <is_inserted_md>FALSE</is_inserted_md>
         </metadata>

REF:
http://mediamosa.org/trac/browser/mediamosa_snapshot_2-x/sites/all/modules/mediamosa/core/asset/mediafile/metadata


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Schulte  Olaf A. Schulte Olaf A.
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Re: [Metadata] Technical & other metadata

Cf. http://opencast.jira.com/wiki/display/MH/Technical+metadata+%28MediaInfo%29 for the results of MediaInfo analysis. Except for

 

colorspace,

bpp (color depth?), and

container_type (why does it have so many, Frans?)

 

I see no major differences with the MediaMosa output – and some additional data.

 

Would that be sufficient with respect to the information on distribution formats, Brian?

 

O

 

Von: [hidden email] [mailto:[hidden email]] Im Auftrag von Brian O'Hagan
Gesendet: Dienstag, 4. Mai 2010 19:45
An: Frans Ward
Cc: [hidden email]
Betreff: Re: [Metadata] Technical & other metadata

 

Ps. +1 on Fran's example, as I see many overlaps in what our group would also prefer to collect & store!

 

/Bri

 

On May 4, 2010, at 10:08 AM, Frans Ward wrote:



For example we are storing the following data in respect to the
technical details:


         <metadata>
           <video_codec>h264</video_codec>
           <colorspace>yuv420p</colorspace>
           <width>352</width>
           <height>288</height>
           <fps>25</fps>
           <audio_codec>aac</audio_codec>
           <sample_rate>44100</sample_rate>
           <channels>stereo</channels>
           <file_duration>00:01:06.06</file_duration>
           <container_type>mov;mp4;m4a;3gp;3g2;mj2</container_type>
           <bitrate>591</bitrate>
           <bpp>0.23</bpp>
           <filesize>4885989</filesize>
           <mime_type>video/mp4</mime_type>
           <created>2010-04-20 14:52:08</created>
           <changed>2010-04-20 14:52:08</changed>
           <is_hinted>FALSE</is_hinted>
           <is_inserted_md>FALSE</is_inserted_md>
         </metadata>

REF:
http://mediamosa.org/trac/browser/mediamosa_snapshot_2-x/sites/all/modules/mediamosa/core/asset/mediafile/metadata

 


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Schulte  Olaf A. Schulte Olaf A.
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[Metadata] WG: Technical & other metadata

In reply to this post by Schulte Olaf A.

http://opencast.jira.com/wiki/display/MH/Technical+metadata+%28MediaInfo%29

 

This example for a MediaInfo analysis could be useful to some.

 

O

 

 

 

Von: [hidden email] [mailto:[hidden email]] Im Auftrag von Schulte Olaf A.
Gesendet: Dienstag, 4. Mai 2010 22:01
An: Brian O'Hagan; Frans Ward
Cc: [hidden email]
Betreff: Re: [Metadata] Technical & other metadata

 

Cf. http://opencast.jira.com/wiki/display/MH/Technical+metadata+%28MediaInfo%29 for the results of MediaInfo analysis. Except for

 

colorspace,

bpp (color depth?), and

container_type (why does it have so many, Frans?)

 

I see no major differences with the MediaMosa output – and some additional data.

 

Would that be sufficient with respect to the information on distribution formats, Brian?

 

O

 

Von: [hidden email] [mailto:[hidden email]] Im Auftrag von Brian O'Hagan
Gesendet: Dienstag, 4. Mai 2010 19:45
An: Frans Ward
Cc: [hidden email]
Betreff: Re: [Metadata] Technical & other metadata

 

Ps. +1 on Fran's example, as I see many overlaps in what our group would also prefer to collect & store!

 

/Bri

 

On May 4, 2010, at 10:08 AM, Frans Ward wrote:

 

For example we are storing the following data in respect to the
technical details:


         <metadata>
           <video_codec>h264</video_codec>
           <colorspace>yuv420p</colorspace>
           <width>352</width>
           <height>288</height>
           <fps>25</fps>
           <audio_codec>aac</audio_codec>
           <sample_rate>44100</sample_rate>
           <channels>stereo</channels>
           <file_duration>00:01:06.06</file_duration>
           <container_type>mov;mp4;m4a;3gp;3g2;mj2</container_type>
           <bitrate>591</bitrate>
           <bpp>0.23</bpp>
           <filesize>4885989</filesize>
           <mime_type>video/mp4</mime_type>
           <created>2010-04-20 14:52:08</created>
           <changed>2010-04-20 14:52:08</changed>
           <is_hinted>FALSE</is_hinted>
           <is_inserted_md>FALSE</is_inserted_md>
         </metadata>

REF:
http://mediamosa.org/trac/browser/mediamosa_snapshot_2-x/sites/all/modules/mediamosa/core/asset/mediafile/metadata

 


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Fransward Fransward
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Re: [Metadata] Technical & other metadata

In reply to this post by Schulte Olaf A.
Olaf,

Some additions from my side inline.

On 4-5-2010 22:00, Schulte Olaf A. wrote:
> Cf.
> http://opencast.jira.com/wiki/display/MH/Technical+metadata+%28MediaInfo%29
> for the results of MediaInfo analysis. Except for
>
>  
>
> colorspace

ie YUV420P

MediaInfo gives you more or less the same info in 2 fields:
        Colorimetry: 4:2:0
        Scan type: Progressive

> bpp (color depth?)

BPP – Bits Per Pixel. It gives you a rough indication of the quality of
the video.
To be calculated as:
[bits/pixel] = (bitrate[in kb/s] * 1000) / (width * height * frames/s)

It is similar to the MediaInfo tag: Bits/(Pixel*Frame)

> container_type (why does it have so many, Frans?)

MediaInfo only shows you the codec, not the container format which shows
you how data and metadata are stored. In an environment where you want
to have maximum flexibility for handling different kind of video by
different kind of streaming servers, you'll need both codec and
container type. Well, at least we think so ;-)

The 'mov;mp4;m4a;3gp;3g2;mj2' is the container format info that FFMPEG
shows you. We use a lua script using FFMPEG as a tool to determine the
technical metadata of the mediafile. It may seem going through a lot of
effort, but at least if gives us flexibility.

Frans

>
>  
>
> I see no major differences with the MediaMosa output – and some
> additional data.
>
>  
>
> Would that be sufficient with respect to the information on distribution
> formats, Brian?
>
>  
>
> O
>
>  
>
> *Von:* [hidden email]
> [mailto:[hidden email]] *Im Auftrag von *Brian O'Hagan
> *Gesendet:* Dienstag, 4. Mai 2010 19:45
> *An:* Frans Ward
> *Cc:* [hidden email]
> *Betreff:* Re: [Metadata] Technical & other metadata
>
>  
>
> Ps. +1 on Fran's example, as I see many overlaps in what our group would
> also prefer to collect & store!
>
>  
>
> /Bri
>
>  
>
> On May 4, 2010, at 10:08 AM, Frans Ward wrote:
>
>
>
> For example we are storing the following data in respect to the
> technical details:
>
>
>          <metadata>
>            <video_codec>h264</video_codec>
>            <colorspace>yuv420p</colorspace>
>            <width>352</width>
>            <height>288</height>
>            <fps>25</fps>
>            <audio_codec>aac</audio_codec>
>            <sample_rate>44100</sample_rate>
>            <channels>stereo</channels>
>            <file_duration>00:01:06.06</file_duration>
>            <container_type>mov;mp4;m4a;3gp;3g2;mj2</container_type>
>            <bitrate>591</bitrate>
>            <bpp>0.23</bpp>
>            <filesize>4885989</filesize>
>            <mime_type>video/mp4</mime_type>
>            <created>2010-04-20 14:52:08</created>
>            <changed>2010-04-20 14:52:08</changed>
>            <is_hinted>FALSE</is_hinted>
>            <is_inserted_md>FALSE</is_inserted_md>
>          </metadata>
>
> REF:
> http://mediamosa.org/trac/browser/mediamosa_snapshot_2-x/sites/all/modules/mediamosa/core/asset/mediafile/metadata
>
>  
>


--
Frans Ward
Advanced Services, Technical Product Manager MediaMosa/VP-Core
Tel: +31 30 2305384   Mob: +31 622803444   Fax: +31 30 2305329
SURFnet -  POBox 19035 -  NL-3501 DA Utrecht - The Netherlands
www.surfnet.nl  - We make innovation work -  www.mediamosa.org

 There cannot be a crisis today. My schedule is already full
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Re: [Metadata] Technical & other metadata

In reply to this post by Schulte Olaf A.

On May 4, 2010, at 4:00 PM, Schulte Olaf A. wrote:

Would that be sufficient with respect to the information on distribution formats, Brian?

After looking over the Mediainfo analysis, from my perspective I do believe it is sufficient re: distribution formats.  Thanks for running this test and documenting the technical info!

/Brian

---------------------------------

Brian O'Hagan

Center for New Media Teaching and Learning

Columbia University

[hidden email]

http://ccnmtl.columbia.edu

212.854.4429








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