Displaying 20 results from an estimated 5000 matches similar to: "Theora I bitstream freeze"
2002 Nov 23
1
Compiling theora
I have tried following the Theora Micro How-to
http://www.xiph.org/archives/theora-dev/200209/0092.html
I have been able to:
* download
* compile
* encode
But decoding/playing does not work. I get:
$ examples/player_example < fiatlux.theora.ogg
sh: examples/player_example: No such file or directory
See http://ole.tange.dk/projekter/theora/ for more precise information.
<p>/Ole
--
2002 Oct 04
5
Theora support in ffdshow a ffvfw
Hi,
I'm developing ffdshow and ffvfw codecs for Windows. You can read more
about them at http://cutka.szm.sk and http://sourceforge.net/projects/ffdshow.
Stéphane Bérubé asked me recently if I could implement Theora support. I knew
about first Theora release, downloaded its sources and tested it. I liked
the results add decided to support it.
I implemented encoding functionality into ffvfw,
2003 Jun 13
1
theora bitstream spec
question for the crowd:
In writing the bitstream spec, I need to decide how to name various fields. I can go with names equivalent or very similar to the existing C code, or I can go with a similar set of labels that are more intuitive. Many of the C variables are named in cryptic or confusing ways.
Presently, I'm changing the names to be more descriptive whenever it seems to make sense,
2004 Mar 26
1
Understanding the Theora Bitstream
Hi,
I checked out the Theora source code for the first time as I
figured that's the only way the Theora quirks will get documented (and
subsequently re-implemented in libavcodec). I see that most of the code
cribs the original VP3 source code, including the misspelled comments.
Moving right along, I can't reconcile the way bits are packed in the
stream. In VP3, the first byte of an
2011 Mar 01
1
theora encoder reordering, order of puting data from DCT 8x8 blocks to huffman compressor, and puting result of huffman compressor to buffer bitstream memory
Good day!
I'm creating HDL IP CORE (for using in FPGA) for theora encoder (now only
I-frames).
I don't undestand one moment. Now i develop such stages:
1. From RBG(byer) to YCbCr converter
2. DCT processing (8x8 pixels blocks)
3. Quantizator of DCT coeff.
4. Zig-Zag of quantized DCT coeff.
and now i have uresolved last stage of compression - how i must send 8x8
blocks to huffman
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?
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
2004 Feb 09
2
Bitstream freeze
Hello,
I´m just curious: How far is Theora from a bitstream freeze?
From TheoraTodo:
"Derf has come up with a number of suggestions for improving the
flexibility of the bitstream based on his experimental encoder work.
These will be implemented, if not entirely supported by the reference
decoder, before alpha 3 is released."
Are those changes supposed to be the last adjustments?
2004 Nov 19
3
Windows installer for Helix Vorbis & Theora plugins posted
Hi All,
I just posted Windows installer for the 0.5 release of the Helix Theora &
Vorbis plugins for RealPlayer 10/10.5 and RealOne Player. There are no code
changes from the 0.5 zip file that was posted earlier. I've just replaced the
zip file with an installer. You can get the installer at
https://helixcommunity.org/download.php/713/xiphplins_win32_0_5.exe
Let me know if you have any
2004 Nov 19
3
Windows installer for Helix Vorbis & Theora plugins posted
Hi All,
I just posted Windows installer for the 0.5 release of the Helix Theora &
Vorbis plugins for RealPlayer 10/10.5 and RealOne Player. There are no code
changes from the 0.5 zip file that was posted earlier. I've just replaced the
zip file with an installer. You can get the installer at
https://helixcommunity.org/download.php/713/xiphplins_win32_0_5.exe
Let me know if you have any
2004 Jun 23
2
watching ogg/theora streams on win32 ?
Hi all,
I wanted to give watching our stream a try.
Illiminable, I downloaded your codecs, and installed them, but Windows
Media Player still doesn't recognize the video in my test Theora video
clips. It seems to play the audio part of it fine though, although it
tends to crash at the end.
I tried RealPlayer 10 and after some archive browsing I found the link
to the plugins for it (why are
2010 Dec 10
2
Bitstream encoded huffman tables always the same
Hello all,
I've been working a little inside the Theora decoder when I found that
it seems that many videos had the very same huffman tables encoded into
their bitstreams (at least the ones that I could take my time to
dissecate). I found that the tables are listed as TH_VP31_HUFF_CODES in
the file huffenc.c. I tried to investigate a little bit more to see who
was setting the bitstream
2003 Jun 08
5
bitstream versioning
as per yesterday's discussion at #theora --
It has been suggested that we devise a method such that we will be able to add certain features to the bitstream (interlace, exotic color subsampling, clip length flag for download, etc), in such a way as to not obsolete streams encoded previously. Rillian's suggestion, which is pretty much standard practice, is to add a bitstream revision
2003 Mar 18
6
bitstream changes
ok now I see why we need another packet in the header. The first one is basically for ID purposes (theora_decode_header()). I've jammed my huffman trees in there but it sucks because I need them later on when I actually build the huffman tree structs (theora_decode_init, calls InitHuffmanSet()). At that point the original header packet is gone so I've been keeping it around in a buffer.
2020 Nov 05
1
Some packages have non-POSIX-compliant shell scripts. Implement a CRAN check for bashisms?
Dear R-devel,
Recently I ran into trouble installing two separate packages, nloptr and ncdf4, both due to the same issue: they have scripts that have the shebang `#! /bin/sh', but have bashisms in them, i.e. non-POSIX-compliant bash scripts.
I use dash [1] as my shell environment, since it's about 4x as fast as bash. It looks like it's recently also become the default shell for
2004 Oct 08
3
Ffdshow-20042003 Theora support fixed.
Thought I'd pass this along for Theora users on the Windowzz platform.
The latest alpha build of the ffdshow filter (20041003) on Sourceforge
http://sourceforge.net/projects/ffdshow/
Seems to have had theora, broken since the June/July unofficial builds,
fixed. This build also connects nicely to Zen's Ogg splitter and also
decodes Helix Producer encoded Ogg's well. The encoder side
2023 Feb 27
0
[ANNOUNCE] font-bitstream-type1 1.0.4
This release bundles up the last twelve years worth of build system
improvements, including making the configure script more efficient.
Alan Coopersmith (9):
configure: Drop AM_MAINTAINER_MODE
autogen.sh: Honor NOCONFIGURE=1
Update README for gitlab migration
Update configure.ac bug URL for gitlab migration
gitlab CI: add a basic build test
Build xz tarballs
2023 Feb 27
0
[ANNOUNCE] font-bitstream-75dpi 1.0.4
This release bundles up the last twelve years worth of build system
improvements, including making the configure script more efficient
and using the -n flag to gzip to improve build reproducibility.
Alan Coopersmith (10):
configure: Drop AM_MAINTAINER_MODE
autogen.sh: Honor NOCONFIGURE=1
Update README for gitlab migration
Update configure.ac bug URL for gitlab migration
2003 Apr 26
1
Ogg bitstream spec question
Hi,
Is it expected that an Ogg logical bitstream might logically serve as
the physical bitstream from which other logical bitstreams might be
demuxed? I am not sure that I really see the point of doing this, but
it would certainly be possible within the current spec.
The trouble is that there are any number of ways to do the low-level
muxing of several streams into one logical stream, with
2004 Mar 01
2
theora release todos
Hi,
last week's thread about getting closer to a release fizzled out.
The mailing list discussion and the TheoraTodo wiki item suggest the
following are required for release:
1. freeze the theora logical bitstream format
2. complete the reference implementation tools
3. stablize the libtheora API
4. complete the documentation
I'd like to suggest this as
2009 Apr 10
1
Speex .spx bitstream format
Dear experts,
I am trying to understand the structure of the Speex .spx file, so I can
packetize each frame in one packet for example, and in the receiving end,
I can decode a file that has all the received frames (some of them may
lost).
I tried to figure out what is the delimiter used to separate the frames
but I could not so far. I also tried to deleted some data from the .spx
file or change