Hi all, I have some relatively small (max 90Mb) videos I would like to play in my Delphi 7 application. The videos are stored in a BLOB field in a Elevate table.

I have had a look at DSPack and VLC but these seem to concentrate on actual files or streaming from the web which I am sure is great but not what I am after. VLC does make a great deal about using MRL's and I was wondering if I could use that?

So, does anyone know how to send a BLOB to either of these components? I presume that you load the BLOB into a stream like so (BLStream is defined as a TStream)

 BLStream :=VideoTable.CreateBLOBStream(VideoTable.FieldByName('VIDEO'),bmRead);

but then I am not sure how to pass this into DSPack or VLC.


Regards

Edward Jones
NVS Ltd UK

Sorry, I should of mentioned that I have the VLC Delphi interface PasLibVlcPlayer if that helps.

Edward Jones wrote:

Hi all, I have some relatively small (max 90Mb) videos I would like to play in my Delphi 7 application. The videos are stored in a BLOB field in a Elevate table.

I have had a look at DSPack and VLC but these seem to concentrate on actual files or streaming from the web which I am sure is great but not what I am after. VLC does make a great deal about using MRL's and I was wondering if I could use that?

So, does anyone know how to send a BLOB to either of these components? I presume that you load the BLOB into a stream like so (BLStream is defined as a TStream)

 BLStream :=VideoTable.CreateBLOBStream(VideoTable.FieldByName('VIDEO'),bmRead);

but then I am not sure how to pass this into DSPack or VLC.


Regards

Edward Jones
NVS Ltd UK

Edward,

<< Sorry, I should of mentioned that I have the VLC Delphi interface
PasLibVlcPlayer if that helps. >>

Post that unit in the ElevateDB Binaries newsgroup, and I'll take a look and
see what it supports.

Tim Young
Elevate Software
www.elevatesoft.com

Hi Tim, many thanks for the swift response! I have posted a zip file with the unit and demo in in the ElevateDB Binaries newsgroup.

Many thanks again!


Regards

Edward Jones
NVS Ltd UK

"Tim Young [Elevate Software]" wrote:

Edward,

<< Sorry, I should of mentioned that I have the VLC Delphi interface
PasLibVlcPlayer if that helps. >>

Post that unit in the ElevateDB Binaries newsgroup, and I'll take a look and
see what it supports.

Tim Young
Elevate Software
www.elevatesoft.com

Edward,

Okay, I took a look at the source code, and unfortunately the only thing
you're going to be able to do is dump the BLOB to a file, and then use a
file MRL to access it.  There just doesn't appear to be any other way, other
than getting into writing a TCP server that will serve up the streams as
binary responses.

If you have any other questions, please let me know.

Tim Young
Elevate Software
www.elevatesoft.com

Hi Tim, thankyou for spending some time on this as I am sure you are very busy! I like the idea of the TCP server as I already have one that sends out program updates so I can change it to send BLOB streams as well. I should of seen this before but it always helps to get a fresh pair of eyes on a problem!

Regards

Edward Jones

"Tim Young [Elevate Software]" wrote:

Edward,

Okay, I took a look at the source code, and unfortunately the only thing
you're going to be able to do is dump the BLOB to a file, and then use a
file MRL to access it.  There just doesn't appear to be any other way, other
than getting into writing a TCP server that will serve up the streams as
binary responses.

If you have any other questions, please let me know.

Tim Young
Elevate Software
www.elevatesoft.com