similar to: flac-dev Digest, Vol 91, Issue 4

Hello, I have proposed to WebM to use FLAC in a future version. Since FLAC was designed a decade ago, I was wondering if there were any new compression techniques that FLAC could use in a new version to improve compression ratios. If so, it would be worth synchronising with WebM for compatibility reasons. Here's the WebM discussion:

James Haigh <james.r.haigh at gmail.com> > Note that 50% is silly, lossless compression is asymptotic. I 2nd Martin, > once you have high-density entropy, there's little more 'air' to > squeeze-out. 10-20% would be worth it if it helps adoption, although it's > worth studying how close we already are to the asymptote of entropy. How > much would be saved? How

OpenCodecs release 0.84.17338 ----------------------------- OpenCodecs is a set of DirectShow filters for playing Ogg Vorbis, Speex, Theora, FLAC, and WebM files in Windows Media Player and other players. This release added WebM support (using versioned snapshots provided by The WebM Project), which determined the change of project's name from "Ogg Codecs" to "Open

OpenCodecs release 0.84.17338 ----------------------------- OpenCodecs is a set of DirectShow filters for playing Ogg Vorbis, Speex, Theora, FLAC, and WebM files in Windows Media Player and other players. This release added WebM support (using versioned snapshots provided by The WebM Project), which determined the change of project's name from "Ogg Codecs" to "Open

OpenCodecs release 0.84.17338 ----------------------------- OpenCodecs is a set of DirectShow filters for playing Ogg Vorbis, Speex, Theora, FLAC, and WebM files in Windows Media Player and other players. This release added WebM support (using versioned snapshots provided by The WebM Project), which determined the change of project's name from "Ogg Codecs" to "Open

I did some tests: ### Theora support in Firefox 3.7a (missnamed as "Minefield"): Same as since 3.5 (plays, no controls if Javascript off, no thorough retest of buffering issues). http://lists.xiph.org/pipermail/theora/2010-January/003369.html http://bugzilla.mozilla.org/show_bug.cgi?id=449358 ### WeBM support in Firefox 3.7a Seems to play (controls bug of course also there) and

Ralph Giles <giles at thaumas.net> wrote: > On 12-06-19 10:08 AM, James Haigh wrote: >> I have proposed to WebM to use FLAC in a future version. Since FLAC was >> designed a decade ago, I was wondering if there were any new compression >> techniques that FLAC could use in a new version to improve compression >> ratios. > > The short answer is yes, but for it

Google has opened up VP8, and has lined up about 40 companies/organizations (including xiph) in a coordinated launch: http://www.webmproject.org/ Anyone know where there are quality comparisons between H.264, Theora, and VP8? -SteveK

This must be easy to do..... I have a vector and a lookup data.frame: > v [1] "5" "234" "234" "42-43" "234" "42-43" "234" "234" "42-43" "234" "5" "234" "234" "5" "234" "234" "5"

Hi Jean-Mark, thank you for your answer! Yes, you understood my question correctly. I was just about to compose a reply to my original question, where I described how I solved my problem. As you've already suggested, I've switched to Ogg/Opus, which is better supported, but does not work with the Media Source Extensions. I'll have a look whether disabling prediction will help with

Hi! Short version of my question: How to produce Opus frames which can be safely concatenated and how to embed them into a WebM file? Long version: I'm currently implementing a web-based audio player which streams audio as opus/WebM using the HTML5 media source extensions. Currently, the server decodes a set of input files to a fixed RAW audio format (stereo, 48000 kHz) and encodes the

Hi all, I finally understand how lipopusenc is capable of producing chainable Opus files (in contrast to my program), and I managed to successfully implement the method [1]. Essentially, the last frame of a file is marked as a "keyframe" by disabling prediction for this frame in libopus. This encoded keyframe frame is then copied in verbatim to the next file, with the pre-skip set to

Hi Jean-Marc (and everyone else who replied), > Considering you're switching to Ogg, I think you should give libopusenc> a try. It does a really good job at getting rid of *all* discontinuities> -- to the point where you can chop a song into files less than one> millisecond each and it still sounds good. It's also pretty simple to> use. You just feed it audio and tell it

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 I'm generating a symmetric correlation matrix using a data matrix as input: mat <- cor(data.mat) My question is: Is there a more memory efficient way to store this data? For instance, since: all(mat == t(mat)) every value is duplicated, and I should be able to almost half the memory usage for large matrices. Any thoughts/comments? Cheers,

I have a 2 column data.frame: > d[1:5,] a b 1 80015 C 2 80016 B 3 80023 C 4 80062 B 5 80069 B I want to apply a function across each row: > for(i in 1:nrow(d)) { + myFun(con, d[i,]$a, d[i,]$b) + } How do I do this using apply()? I'm unsure how to tell apply() to pass data from columns a and b for a given row as arguments to the function

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 I have the following data: > y [1] 0.000 0.004 0.008 0.016 0.024 0.032 0.044 0.064 0.072 0.088 0.108 0.140 [13] 0.156 0.180 0.208 0.236 0.264 0.296 0.320 0.360 0.408 0.444 0.472 0.524 [25] 0.576 > x [1] 100 200 300 400 500 600 700 800 900 1000 1100 1200 1300 1400 1500 [16] 1600 1700 1800 1900 2000 2100 2200 2300 2400 2500 I'd

Hi Jean-Marc, thank you for looking into this. I'm using the current release version of libopus (1.2.1) and version 0.1.10 of opus-tools, both built from source. Libopusenc is the current git master. Indeed I cannot hear any glitches in continuous.opus, continuous.wav, and chained.wav. chained.opus decodes just fine with opusdec as well, but doesn't play properly in any standard audio

I have a data.frame obj with 5 columns whose colnames match the fields in my "contact" table. The only other field my MySQL table has is an id field which is the PK and is set to auto increment. I'd like to load this data.frame using something like: dbWriteTable(con, "contact", dat, append=TRUE) However, I get this error: Error in mysqlExecStatement(conn, statement,

On Sun 17 Jun 2012 01:44:32 PM PDT, Parisson wrote: > A few months ago, when you released libshout 2.3.0, you talked about a hacked > version of shout2send plugin for GStreamer. As I also use GStreamer to stream > live, could you please share your patch so that I can test it against Icecast > trunk and some webm streams? The webm support for shout2send landed in gstreamer git some

Hi ! 2011/1/31 Romain Beauxis <toots at rastageeks.org>: > Well the interesting question is: "Is webm streamable?". Well it seems to ma that Google made Webm especially for streaming and I've even read that it should be easier to stream webm than ogg for various reasons. > Alternatively, there seems to be a ogg mapping for vp8 floating around: >