similar to: How to wrap Opus data in an Ogg stream?

On Wed, Oct 14, 2015 at 4:18 AM, Daniel Armyr <daniel at armyr.se> wrote: > Hi. > I am trying to understand how to package opus-encoded data in an ogg stream to make a standards-compilant ogg/opus file. Most things are clear, but there is one thing I simply do not understand. > > What I do understand is that Ogg is based on pages, that each come with a fairly sizeable header

Thanks for a very quick and very good answer. Let me just double-check one thing: > To put multiple Ogg Opus packets in an Ogg page, all you need to do is > start a new segment for each Ogg Opus packet. There can be up to 255 > segments per page. For details, see the Ogg specification: > https://tools.ietf.org/html/rfc3533 So do I understand it correctly that a decoder will

Hi. I assume that I am deeply stupid and have missed something obvious, but why does this bare-bones code not generate a valid (If trivial) opus file? Running opusinfo I ge the following which I interpret this to mean that not even the first packet gets a pass: New logical stream (#1, serial: 1f0cce42): type opus WARNING: Could not decode Opus header packet 0 - invalid Opus stream (1) WARNING:

Hi all, I am a developer for embedded system and totally new to Opus and open source audio codec. I'm now using Microchip dsPIC33 to develop a decoder for Opus. I am now using sources of libopus. The first question is for calling opus_decode(), do I need to skip the header bytes of an opus file before I can input the file data to opus_decode()? Or will libopus handle this automatically?

On Wed, Oct 14, 2015 at 9:11 AM, Daniel Armyr <daniel at armyr.se> wrote: > Thanks for a very quick and very good answer. Let me just double-check one thing: > >> To put multiple Ogg Opus packets in an Ogg page, all you need to do is >> start a new segment for each Ogg Opus packet. There can be up to 255 >> segments per page. For details, see the Ogg specification:

On 23/02/15 10:30 AM, Tony wrote: > I __think__ opus-tools' opusenc has code which can be used as a > template/sample for how to create an .Ogg file with Opus content. As > expected, it makes use of libopus and libogg. Sadly that's the best option currently. As you say it's a bit complicated, although oggenc has a lot of extra support for controlling encoder options you

Which one of the various libraries on xiph.org allow me to create an Opus file? The 3 or so libraries on the Opus download page all seem to be for reading files, converting and/or encode/decode streams. I have device that outputs a stream of Opus 'frames' and I need to save them into an Opus file. -- Tony -------------- next part -------------- An HTML attachment was scrubbed... URL:

Hi Mark, Well, so do you think that any of this libraries probably won't provide correct audio conversion? Do you know any other possible solutions for described problems, ommiting trying to fix on my own any of this libraries or waiting for fix? Will you mind if I quote you in disscussion I mentioned? Sorry for asking you so many questions at once. Regards, Mateusz 2015-07-08 17:42

Thanks a lot. Well, the problem is that it's hard to find any informaton about converting *.mjr files. I'll keep trying. Regards, Mateusz 2015-07-09 0:57 GMT+02:00 Mark Harris <mark.hsj at gmail.com>: > Hi Mateusz, > > It looks like the Janus code that writes Ogg Opus will not produce > correct Ogg Opus output when there are packets missing. You can quote > me or

Martin Leese wrote: > Subject: [opus] MIME Types and File Extensions > To: opus at xiph.org > Message-ID: > <CAAzqGd_uzR646Nsdt=O2HDxLOYE2=K=5n9UOHLr3Y4BGzdVasw at mail.gmail.com> > Content-Type: text/plain; charset=UTF-8 > > Hi All, > > On the Xiph Wiki page at: > https://wiki.xiph.org/MIME_Types_and_File_Extensions ... > Could somebody more

Hi, In our project we use janus-gateway (http://janus.conf.meetecho.com/) as a webRTC gateway and also as a stream recorder. We are on the tests stage of our project, and after very long development time we have ecountered a bug that is a blocker for whole project. After real tests of recording streams using janus we realized that audio and video are out of sync in recordings, despite of fact,

This patch adds a new option "channel-mapping" to opusenc which sets the channel mapping family used by the multistream encoder. Please let me know whether adding this option is worthwhile and whether the help string is okay. I tried to keep it short but accurate. The error message for an unimplemented channel mapping is "Error cannot create encoder: request not implemented".

hello all - this is probably something simple, but i am on-the-road and cant find a quick solution. ?i cant seem to get the opus toolset to recognize the ogg library. ?i was able to successfully get opus to work with FFMPEG, but not the toolset. when i go to install opus-tools, i get the following message: No package 'ogg' found i would like to have opusenc working, since i have 700k

Marvin, That is the current version being used and it still has no meta data. server_id Icecast 2.4.99.1 Testing the metadata from the admin page “Update Metadata” results in the response: Message: Mountpoint will not accept URL updates Return Code: 1 So I would guess it isn’t functioning yet. > On Jun 12, 2017, at 12:34 PM, Marvin Scholz <epirat07 at gmail.com>

All, Just a heads up that the IETF codec working group has issued a last call on the draft Opus specification. This means we think the draft adequately documents the format, and that we're willing to live with whatever bugs are present in the reference implementation, if they can't be fixed without breaking decodes. In turn, this means we could really use some feedback from implementers.

Hello, I'm currently using Liquidsoap to stream a group of files to Icecast. The stream is sent to Icecast in a few different formats (MP3,HE-AAC v2,OggFlac,OggOpus). The "Current Song" metadata is correctly displayed for the MP3 and the AAC stream, but not the OggFLAC or OggOpus stream. I see a few entries in the Icecast forums, but it does look like FLAC metadata support never

Hello, We have a use case where we want to record an opus RTP stream to a .opus file. We want to fill in any gaps in the stream, and we also want to take advantage of inband FEC whenever possible. The ogg/opus draft describes[1] how to fill in gaps by generating zero-byte frames, but I do not understand how (and if) FEC can be used. Is this possible, and if so, what is the recommended way of

Hello, We (Google) have been experimenting with configuration and adjustments to CELT-only Opus that give good results for compressing ambisonic audio signals [1]. Based on our results so far, we would like to use Opus to encode spatial audio. We hope to make it easy/possible to use libopus with other common tools and software modules (ffmpeg/libav in particular). Based on my reading of the

Hi All, On the Xiph Wiki page at: https://wiki.xiph.org/MIME_Types_and_File_Extensions I added Opus to several of the sections, but wasn't sure whether to add "Theora + Opus" to: .ogv - video/ogg .axv - video/annodex As far as I can tell, according to the Opus FAQ at: https://wiki.xiph.org/OpusFAQ#Will_Opus_replace_Vorbis_in_video_files.3F Theora + Opus is

On 30/3/20 23:17, Ralph Giles wrote: > I'm not aware of any other attempts, and there have never been official > plans. It's difficult to partition input for opus at anything other than > the track level, because of the way the decoder derives its adaptive > state from recently-seen audio. I guess cutting together streams with at > least an 80ms overlap wouldn't glitch