search for: colourspaces

Hey everyone, according to Wikipedia's 4-year-old information, there is no standard for putting metadata into an Ogg file. That metadata must be included in the codec. For example, what if I want to make a Theora movie and include information about the color space or embed an ICC profile? Or can I include general textual information, like copyright? What about timecode? Brendan

...'s no container-level metadata. The 'mapping' specs for various sets of codecs embedded in Ogg describe how metadata is stored. > For example, what if I want to make a Theora movie and include information about the color space or embed an ICC profile? Theora only supports two fixed colourspaces--defined in the spec--and 'unspecified'. There's generic metadata, so you could do something custom with a base64-encoded ICC profile and an undefined colourspace flag if you want to track this, but we generally discourage that. Theora is a distribution format; it's best to convert...

hi yorn and all, thank you oggvideo tools for windows. it is great... i can live with the command line for now myself but i will need to make some art students work with oggvideotools and they may not be happy with that:D anyway your video tutorial is also good (but it also crashed my firefox 3.5 beta 4 for two times on windows and i have reported that to mozilla), i would love to help for that

Hi, I failed to run install.packages("imager") in CentOS 6, the R version is 3.2.2 g++ -shared -L/usr/local/r/3.2.2/lib64/R/lib -L/usr/local/lib64 -o imager.so RcppExports.o colourspace.o display.o drawing.o filtering.o interpolation.o morphology.o transformations.o utils.o wrappers.o -lX11 -lfftw3 -L/usr/local/r/3.2.2/lib64/R/lib -lR /usr/bin/ld: cannot find -lfftw3 I checked

hi guys, first of all, i'd like to ask if there any crossplatform software/service ( gui is also better, an online application like firefogg is great, or at least a command line tools for any platform) to combine theora videos, other than oggcat... i am doing some art projects that people should be able to remix featured theora videos and i find oggcat very usefull in theory but not in

In response to (and with the help of) John Koleszar I put together an early draft of OggYUV.. or rather, a list of header fields for it. http://wiki.xiph.org/index.php/OggYUV Feedback (on list or on wiki) is most certainly solicited, especially on the chroma subsampling list (how many different sampling methods do we need to reasonably support?) and if we've missed any fields to date.

While trying to find a bug in my encoder, i came across an error in the spec where it defines the structure of the ident header... the spec defines 100 extra bits which aren't actually in the headers... NSBS, NMBS and NBS don't appear in a 3 2 0 header... the actual structure is as follows //0 - 7 header ident (8 bits) //8 - 55 theora ident (48 bits) //56 - 63 ver major (8

In response to (and with the help of) John Koleszar I put together an early draft of OggYUV.. or rather, a list of header fields for it. http://wiki.xiph.org/index.php/OggYUV Feedback (on list or on wiki) is most certainly solicited, especially on the chroma subsampling list (how many different sampling methods do we need to reasonably support?) and if we've missed any fields to date.

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.

> For a lossless codec, the luxury of a "small number of useful formats" > may not be advisable. I can't tell you how many times I've had some raw > data and been completely unable to play it with e.g., mplayer, because > mplayer did not have an apporpriate fourcc. And mplayer has made up many > of their own non-standard fourcc's (which not even all of mplayer

Hi folks,I'm joining this list because I've encountered difficulties with the ogg tools. I'm running Windows, and can't find binaries for liboggz tools, such as oggz-merge.exe Can someone provide oggz-merge.exe? So I use ffmpeg (v19289) for muxing ffmpeg -y -i sync2.ogg -i sync.ogv -vcodec copy -acodec copy sync2.ogv but the framerate fluctuates wildly on playback, and ogginfo

hi folks! i would like to know whether there will be some function to decode to some plain 24 bit RGB buffer in the future. i think this feature is sometimes important, especially when using different surface layers, or when modifying the buffer in realtime. if this feature will definitely not be, could someone tell me how i can convert to some RGB buffer in realtime? i already tried different

hi folks! i would like to know whether there will be some function to decode to some plain 24 bit RGB buffer in the future. i think this feature is sometimes important, especially when using different surface layers, or when modifying the buffer in realtime. if this feature will definitely not be, could someone tell me how i can convert to some RGB buffer in realtime? i already tried different

Hi, I was wondering what are this forum's collective thoughts on the best way to support video color fidelity greater than what we have today. I am not a video developer myself. I edit video. A type of problems I come across fairly often, have to do with the limited color depth of the digital video medium. They often manifest themselves as "cartoonish" areas of adjacent flat

Hey everyone, I just got Theora running on my Mac, and ran across several hurdles, that I was wondering if someone could help me with. I do a lot of tech support at work, and get the same questions over and over, so I tried skimming the archives but couldn't find the answers. Maybe these could go in a FAQ of some sort? These are fairly unavoidable issues that should probably be