similar to: The new WebM codec

On Sat, May 22, 2010 at 12:06:15PM +0300, Alexandru Ardelean wrote: > Hey everyone. > > If you haven't seen this already, last week was Google I/O the third > edition. > The event page is : http://code.google.com/events/io/2010/ > The youtube channel with the keynotes is : > http://www.youtube.com/googledevelopers > One of the most interesting things at that conference

Hello , We are using Icecast for few years in a small french radio station with great success ! ( hitting 60 simultaneous listeners sometimes :-) ) http://www.radiogalere.org:8080/ Now we plan to stream the webcam capture of the studio, we 've done a test with Ogv/theora @128kb video with great sucess although none of the HTML5 browser wher able to keep on playing the stream after few

Hi everyone, I'm working on a WebM plug-in for Premiere. You probably already know that WebM is a Matroska container that uses Vorbis for audio compression. I'm pretty new to the world of audio compression and need some help. You can see my code here: http://github.com/fnordware/AdobeWebM First of all, I wonder if it's possible to seek to an exact audio sample in WebM. Whereas

Hi Vorbis-Dev, I'm investigating various WebM/Vorbis bugs in chromium. AFAIK muxing Vorbis inside of WebM does not have an official specification, so I'm using ffmpeg's implementation to try to answer 2 questions: 1. Under what circumstances is it valid to find WebM Blocks containing Vorbis data with zero duration? (This would mean the next Block in the Cluster has the exact

Brendan Bolles wrote: > DiscardPadding seems to assume that you might top off an opus > frame with empty samples when the frame would spill onto the next > matroska timestamp. So rather than have continuous opus that > could be decoded one after another, you'd have to jump over these > little gaps? The intent was not to allow gaps in the file like this (that would confuse the

What got me experimenting with Opus is that I heard it's going to be a supported codec in WebM, which I also have a Premiere plug-in for: http://github.com/fnordware/AdobeWebM I just posted a new beta that includes Opus support. Naturally, I *think* I'm doing it right, but I'd love for someone more knowledgeable about Opus or WebM to take a look. The closest thing to a standards

Yes, it's basically an intrinsic aspect of the mathematics. If you seek into the middle of an Opus stream, that's about how long it takes before the audio converges to be correct. On Jan 17, 2014 2:13 PM, "Brendan Bolles" <brendan at fnordware.com> wrote: > On Jan 7, 2014, at 11:11 AM, Brendan Bolles wrote: > > > The closest thing to a standards document for

Hello list! Since it is more and more common these days to create enhanced podcasts (= audio files with additional chapter markers [1]), I am searching for an alternative to the currently used MP4 format. ID3 also puplished an official standard for chapters [2], but nobody seems to use and support it. Now I am trying to get something similar with vorbis audio (and maybe an additional

Le dimanche 30 janvier 2011 03:54:10, michel memeteau a ?crit : > Is there some evolution on Webm support, does it need a lot of changes > in Libshout for example ? or does the code structure of icecast makes > it easy to add new containers/codecs ? Well the interesting question is: "Is webm streamable?". I don't know much about it nut webm is wrapped into a matroska-based

Hi all, Sorry for the VP8 question on the Theora list, but I think all the relevant people are here :) I'm using Icecast to distribute some Ogg Theora streams at the moment with a view to adding VP8 along side these in future. Ideally I'd just use Ogg VP8+Vorbis, I know there is a mapping for this already but how much support from the browsers can I expect for this configuration?

Hallo all, euphoria with cheese, the project i working on, i needed to make decision about codecs and containers we use. I'm clearly not expert in this. After the euphoria about vp8/webm going slowly to the end, i see advantages what theora has against vp8. Seems like theora perform better on LoEnd hardware. Even x264 with good optimisation work not really good on slow Athom. My question to

Sorry I replied in private ... 2011/1/31 Quentin Drouet <kent1 at arscenic.info> > > > 2011/1/31 Romain Beauxis <toots at rastageeks.org> > > Le dimanche 30 janvier 2011 03:54:10, michel memeteau a ?crit : >> > Is there some evolution on Webm support, does it need a lot of changes >> > in Libshout for example ? or does the code structure of icecast

Hi I have built and installed ffmpeg 0.6, Libvorbis Version 1.2.0 and, VP8 (libvpx-0.9.1). When I runn ffmpeg on the command line everything appears to work fine. I give it an input webm file downloaded from youtube.com and generate a different ouput webm file. However when I try and encode the same webm input file hosted on my local HTTP server using the ffmpeg API over a HTTP stream I get the

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: >

On Jan 17, 2014, at 3:00 PM, Timothy B. Terriberry wrote: > The intent was not to allow gaps in the file like this (that would > confuse the encoder, compress badly, and complicate decoders, plus be > unrepresentable in Ogg). The intent was to allow trimming from the > _last_ frame in a stream to allow sample-accurate total duration. Ahhh, that makes sense. So you'd add some

On Jan 17, 2014, at 3:19 PM, Brendan Bolles wrote: > I don't think Vorbis has the fixed-frame issue of Opus where audio frames might not align with Matroska timestamps. Whoops, I meant for the total duration of the file you should be able to have your vorbis length match the file duration length exactly. As my next paragraph said, in general I think the Vorbis packets will never align

On 2010-08-27, Ralph Giles wrote: >> My question to you, What advantages has ogg vs matroska. > > They're both free containers, and there isn't a significant > performance difference, so either one works from a free media > perspective. [...] Personally I would add the following points/bullets: * Ogg has a lesser semantic burden, so that e.g. embedded

On Jan 17, 2014, at 2:19 PM, Benjamin Schwartz wrote: > Yes, it's basically an intrinsic aspect of the mathematics. If you seek into the middle of an Opus stream, that's about how long it takes before the audio converges to be correct. I see. Thanks for the info. Any idea about the other Matroska tags? I guess CodecDelay will be the value you get from OPUS_GET_LOOKAHEAD()

Dear all I am streaming live with webm with ffmpeg to icecast 2.4.2. After the stream ends, I am unable to determine the duration of the file using ffprobe or mediainfo. Not sure but it seems that this has to do with headers? Should icecast be writing the duration into the header or should this somehow be passed from ffmpeg? The requirement is really to determine the duration of the streamed

Dear all I am streaming live with webm with ffmpeg to icecast 2.4.2. After the stream ends, I am unable to determine the duration of the file using ffprobe or mediainfo. Not sure but it seems that this has to do with headers? Should icecast be writing the duration into the header or should this somehow be passed from ffmpeg? The requirement is really to determine the duration of the streamed