Displaying 20 results from an estimated 1000 matches similar to: "No subject"
2008 Aug 15
1
GSoC - Theora multithread decoder
Hi,
This email is to inform what I have been doing since the mid-term.
After the mid-term I worked on a pipeline implementation with OpenMP.
As I said before I did a pipelined implementation of these functions:
(c_dec_dc_unpredict_mcu_plane + oc_dec_frags_recon_mcu_plane) and
(oc_state_loop_filter_frag_rows + oc_state_borders_fill_rows) as
explained in my previous email.
But the results were
2008 Jul 07
2
GSoC - Theora multithread decoder
Hi all,
I apologize to not keep you up to date to what is going on with my project.
Portavales has worked in a desk behind me and when we go to take coffee we
talk about the project. Second I didn't know we have to discuss weekly, it
was my fault. I should have read the rules. Sorry.
At the first month, I studied the code and the Theora Beta implementation.
The code is completely different
2007 May 07
2
Theora running on FPGA
Great news! Theora is running on FPGA.
After almost a year of a great effort we have Theora validated on
FPGA. Now I will try to integrated the hardware with a video
controller to see the video!
I completely implemented the ExpandBlock, CopyRecon, LoopFilter and
UpdateUMVBorder functions.
The ReconRefFrames function was partially implemented and the part
before will run on a software compiled
2006 Dec 20
1
SVN Theora FPGA
Hi, I did some improvements and some bug corrections in Theora FPGA
code. I'd like to post this new version in the SVN. How can I do that?
Thanks
--
Leonardo de Paula Rosa Piga
Undergraduate Computer Engineering Student
LSC - IC - UNICAMP
http://www.students.ic.unicamp.br/~ra033956
2007 Jul 12
1
PostProcessingLevel field of PB_INSTANCE
What is the PostProcessingLevel field of PB_INSTANCE?
When is it used?
It is used for all Theora's video or it is just for legacy support with VP3?
Thanks
--
Leonardo de Paula Rosa Piga
Undergraduate Computer Engineering Student
LSC - IC - UNICAMP
http://www.students.ic.unicamp.br/~ra033956
2007 Aug 25
1
Theora playing on a FPGA
Hi all,
Great news. On Thursday I finally play a video on FPGA.
As I said the implementation is using the NIOS II processor.
Andr? Costa is hard working to use the LEON processor.
The video resolution is 96x80, because we have some FPGA internal
memory constraints.
I will try to use external memory to make possible decode a video of
at least 320x240.
The result can be see here:
2007 Aug 25
1
Theora vs MPEG vs H264
Hi all,
I have to compare the theora codec with MPEG and H264.
I was googling and I found that the PSNR is a common used parameter.
How can I do this with Theora?
Thanks
--
Leonardo de Paula Rosa Piga
Undergraduate Computer Engineering Student
LSC - IC - UNICAMP
http://www.students.ic.unicamp.br/~ra033956
2008 Feb 28
1
Multi-thread Theora Decoder
Hi all,
Does Theora Community have an interest in a multi-thread decoder implementation?
I'm starting to work with multi-thread and I thought that Theora
Decoder is a good choice for me, because I had been working with it in
a FPGA implementation and I have experience with the library.
I'm thinking in working with LoopFilter at first. Do you think I could
start with it or there is a
2007 May 09
2
Next step of Hardware Theora
Hello,
First of all, I would like to say that my work that I wrote in the other
email would be to do in hardware the functions: CopyRecon, LoopFilter and
UpdateUMVBorder. These are modules that Leonardo had made, but it wasn't ok
in FPGA. When I had a chat with Leonardo we were thinking in rewrite these
module for to do this running in FPGA (to debug in a Hardware level is much
more
2006 May 31
0
Theora Decoding on FPGA
Hello people
My name is Felipe and I sent a proposal to the Google Summer of Code
that the goal is to get a FPGA embeded system decoding Theora Streams
in real-time.
It was accepted and the mentor is the Ralph Giles.
The proposal can be viewd here:
http://atlas.lsc.ic.unicamp.br/~portavales/wp-content/uploads/2006/05/soc_proposal.txt
There is also a presentation with a better division of the
2006 Jun 05
0
Idct - fpga - improved
Good news,
Working with synchrounous RAM (fpga internal SRAM blocks) the area
usage drop from 20% to 5% of Logic Cells.
And the clock frequency from 30 Mhz to 90 Mhz.
Now I'm improving the latency of samples (number of clock cycles
needed to decode a data sample).
Report:
--------------
Fitter Status : Successful - Mon Jun 5 16:38:21 2006
Quartus II Version : 5.1 Build 176 10/26/2005 SJ
2006 Jul 02
5
What goes to Hardware ?
Hi people,
As I said before: I did the IDCT to run on the FPGA.
My friends from university did the Reconstruction routines running on the FPGA.
I'm helping with the LoopFilter, and it is almost there.
(all VHDL)
I did a small profiling of the libTheora running on a Altera Stratix II device:
The processor used was the NIOS II with 8Kb of data and instruction
cache, branch prediction and
2008 Mar 26
3
Theora logo master
Hello
I would like to ask if it's possible to display Theora logo at
http://ronja.twibright.com/sw.php
I use Theora for automatically generated videos at
http://ronja.twibright.com/3d/
If yes can I please have the master of the logo? I cannot use the small logo you have
on the website.
Thanks,
Karel Kulhavy
2009 Apr 13
2
academic papers that promote theora
Are there any academic papers that promote theora?
I know of one, are there more?
Universal Multimedia Access and Open Standards
<http://www.t4p.no/t4p.no/conference/media/Vaaler.pdf>
tom_a_sparks
Please avoid sending me Word or PowerPoint attachments.
but instead use OpenDocument File Formats or
use OpenOffice
http://en.wikipedia.org/wiki/OpenDocument
2008 Apr 23
1
Theora got extreamly slow (Makefile.am was changed)
I have tried to add a plunging to the "libtheora-1.0beta2" (network
bandwidth measuring component was added) and Got it success for some far
now the problem is when it is added the encoding process get extremely slow
(around 20 seconds delay).
I think that the problem is with my modified Makefile (some flag may have
missed).
the following is my modified Makefile.am which is in the
2006 Jun 06
0
Question about PB_INSTANCE fields
I'm trying to implement the dct_decoder's LoopFilter function in a FPGA.
I need to know what is the maximum memory allocation size which
display_fragment and recon_pixel_index_table points.
These are fields of PB_INSTANCE structure that is declared in the
codec_internal.h
Thank you
===========================
Leonardo de Paula Rosa Piga
Computer Engineering Student
Universidade
2007 Oct 02
3
Multi-Thread Theora Encoder
Hello,
I'm happy to announce I developed a Multi-Threaded version of the
Theora encoder. I changed the Motion Vector Search part of the
algorithm to be executed in parallel.
I've chosen the Motion search part after a careful set of profilings
that shown that the Motion Vector Search is responsible by 70% of
CPU-time on average and up to 95% of CPU-time in some cases. I also
have chosen
2007 Jul 10
0
Theora Hardware: Integration with LEON is completed!
Hi,
The Integration with LEON (first part of my GSoC) is completed.
http://atlas.lsc.ic.unicamp.br/~andre.lnc/theora_integration_with_leon3_full.png
At the last week I had (leon3 + linux + libtheora) and (leon3 +
send_vector_of_input + theora hardware) working ok.
Firstly, I thougth that it just would be:
http://atlas.lsc.ic.unicamp.br/~andre.lnc/theora_integration_with_leon3.png
But it
2011 Jan 22
2
ffmpeg2theora multi-threading
Is there a way to use multi-threading with ffmpeg2theora? Pretty much any
type i'm ok with, including multi-threaded theora encoding or multi-threaded
ffmpeg decoding, or using half of my cpu cores on ffmpeg decoding and the
other half on theora encoding. Is there a way to do multithreaded thoera
encoding?
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2008 Mar 24
2
Theora performance
Hi list,
I just came across this site:
http://web.mit.edu/xiphmont/Public/theora/demo.html
I was wondering are these issues being addressed or will be addressed before
the 1.0 release?
Theora is like the only open sourced free code people can use, i will be
nice if it performs close to other libs.
please keep up the good work!
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