[AG-DEV] resurrecting AGVCRtoMPEG2

[Claus Endres]

Hi,

A long time ago, I wrote code for ffmpeg to allow it to use AGVCR files as an input format.
I handed the code over to the AGVCR developer Derek Piper to keep it in sync with changing AGVCR file
formats.

I have no idea what happened to the code. It is possibly still hidden in ffmpeg.

It required to extract one stream first (using AGVCR), and then convert it to whatever format
you wanted.

I used this to produce DVDs from a series of podium discussions broadcast via AG. We were
streaming PAL resolution MPEG4.

Regards,
Claus.
Gabriel Noronha wrote:
> Thanks Andrew 
> 
> I'll fire your software up and see what it does, you need to advertise your project more because I've never heard of it before and I only found agvcrtompeg2 by intense googling for ag recorders to other outputs. 
> 
> your software might do what we want. (except convert archived records) 
> 
> Gabriel 
> 
>>>> Andrew Rowley <Andrew.Rowley at manchester.ac.uk> 16/06/11 10:53 PM >>>
> Hi,
> 
> I was working on a project called ViCoVRE which was involved in much the same sort of thing - i.e. taking AG recordings and converting them into other formats.
> 
> The project is currently hosted at:
> http://vicovre.googlecode.com
> 
> There is quite a lot of code in there that will probably do what you want.  It is in Java, but makes use of native ffmpeg libraries to do the actual conversion.  Feel free to have a look and let me know if you have any questions.  I think that the main thing that is missing is a reader for the AGVCR format (it uses its own AG recording format), although there is support for writing AGVCR files.  It is also mainly web-based, so I would guess it might need a GUI if you prefer stand-alone execution.  At worst, it might give you some hints for your own code ;)
> 
> Hope this is useful,
> 
> Andrew :)
>  
> ---------------------------------------------------------
>  
>    Andrew G D Rowley
>    Senior Software Engineer, NaCTeM
>  
>    School of Computer Science
>    Manchester Interdisciplinary Biocentre
>    131 Princess Street, M1 7DN
>    t :  +44 (0) 161 306 3093
>    e :  Andrew.Rowley at manchester.ac.uk 
>  
> ---------------------------------------------------------
> 
> 
> -----Original Message-----
> From: ag-dev-bounces at lists.mcs.anl.gov [mailto:ag-dev-bounces at lists.mcs.anl.gov] On Behalf Of Gabriel Noronha
> Sent: 16 June 2011 12:50
> To: ag-dev at mcs.anl.gov
> Cc: manyon at gmail.com
> Subject: [AG-DEV] resurrecting AGVCRtoMPEG2
> 
> Hi all 
> 
> AGVCRtoMPEG2 converts AGVCR recordings to something more useful for playback eg mpeg2 and mp3. 
> so far the project was abandon 5 years ago https://trac.ci.uchicago.edu/if-media/browser/AGVCRToMPEG2 
> the code for 5 years ago successfully can extract h261 and audio and produce mpeg2 and mp3's. 
> 
> I tracked the name of the orginal dev Yifan Lu but it seems he's to have moved on. 
> 
> In my efforts to understand it a bit better I've run the source through doxygen to get call graphs and a understanding of flow. 
> http://noronha.id.au/AGVCRToMPEG2/files.html 
> 
> I've noticed he's copied code from VPC project and VPMedia but then deleted stuff. Is their any active documentation for those projects ? and is any active devs out their able to tell me if the new code will just copy and paste in ? 
> 
> currently waiting on uchicargo to give me svn access to upload any changes their is already a patch to allow it to compile with newer gcc and some new ubuntu install instructions. 11.04
> 
> plans just so you know: (in order sorta)
>     full codec support h264 h261as and mpeg4 
>     different arrangements for videos 1 large rest small etc..   
>     update to use new ffmpeg functions so not using superseeded functions. 
>     64 bit support
>     GPU accelerated  (dreaming)
>     new UI (maybe) 
> 
> yours 
> 
> Gabriel 
> 
> 
> ----
> Gabriel Noronha 
> Access Grid Support Officer 
> University of Newcastle 


-- 
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