search for: kunter

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2007 Apr 28
1
AW: embedded pictures in vorbis comments?
...it ruined a ogg vorbis + theora file so that only the music could be played afterwards, but not the video any more). My .NET tagging library can handle it correctly now by the way ;-) Cheers, Mathias ----- Urspr?ngliche Mail ---- Von: Silvia Pfeiffer <silviapfeiffer1@gmail.com> An: Mathias Kunter <mathiaskunter@yahoo.de> CC: ogg-dev@xiph.org Gesendet: Samstag, den 28. April 2007, 03:31:13 Uhr Betreff: Re: [ogg-dev] embedded pictures in vorbis comments? Hi Mathias, The solution you are suggesting won't work because it will not only "not work" in existing players, but pr...
2007 Mar 14
2
packets and OGG pages
On 15/03/07, Ralph Giles <giles@xiph.org> wrote: > On Wed, Mar 14, 2007 at 12:23:47PM +0000, Mathias Kunter wrote: > > > > In contrast to that, http://www.ietf.org/rfc/rfc3533.txt stats the following: > > "Ogg Vorbis provides the name and revision of the Vorbis codec, > > the audio rate and the audio quality on the Ogg Vorbis bos page. > > It also uses TWO additional he...
2007 Apr 22
4
embedded pictures in vorbis comments?
Hello, I'd like to ask about the possibility of embedding pictures like an album cover artwork into a vorbis comment header. Since the data in a comment string after the separating "=" has a defined length, this could theoretically also be binary picture data. For example "PICTURE=[...any binary data...]" It only would be a problem for existing software which isn't
2007 Mar 14
2
AW: packets and OGG pages
Thanks for your replys. >packets don't always begin at the >start of a page OK, since I only want to read / write the Vorbis comments, I can limit it to the Vorbis header packets. http://xiph.org/vorbis/doc/Vorbis_I_spec.html stats that the comment header always begins on the second ogg page. Since the length of the precedent identification header is fixed, this even is a fixed offset
2007 Mar 13
2
packets and OGG pages
Hello all, my name is Mathias, I'd like to ask about some details of the OGG format because I'm quite new to it. I'd like to write a native .NET library for reading and writing Vorbis comments. It's going to be open-sourced as soon as it's finished. So here it goes: 1) When packing (Vorbis) packets to OGG pages, does a new packet always begin on a fresh OGG page? Within the
2009 Mar 26
8
Cover art
Hello to the people reading this list! I am developing tagging support for ogg vorbis in Nero products and we are currently thinking of supporting cover art in ogg files. What is the current state of proposal for cover art in ogg files? Is this http://wiki.xiph.org/index.php/VorbisComment#Cover_art still the latest information? Regards, Goran -------------- next part -------------- An HTML
2007 Mar 14
1
AW: AW: packets and OGG pages
>Searching for 'vorbis' to find the packet boundary is wrong however. >The lacing values in the Ogg page header tells you exactly where the >division is. OK, so given the fact that a page can also contain multiple packets this means that the lacing values of one page could be like the following example: 255 255 189 (something less than 255, indicating that a new packet starts
2007 Mar 14
0
packets and OGG pages
On Wed, Mar 14, 2007 at 12:23:47PM +0000, Mathias Kunter wrote: > OK, since I only want to read / write the Vorbis comments, I can limit it to the Vorbis header packets. > http://xiph.org/vorbis/doc/Vorbis_I_spec.html stats that the comment header always begins on the second ogg page. Since the length of the precedent identification header is fixe...
2007 Apr 20
0
.NET tagging library for ogg Vorbis and ogg FLAC
On Fri, Apr 20, 2007 at 03:10:09PM +0000, Mathias Kunter wrote: > 1) Is it valid to insert an "empty" page into the stream which simply contains the binary value 0 for the page_segments counter, and which therefore contains no segment table nor any packet data? I'd like to do this to produce a gapless page sequence number so that I don&...
2008 Oct 15
0
Album art - requirements
...ot as much a >> qestion of displaying the tag as text (although that is a concern) >> it's that most hardware players that only have 10-20kB available for >> stream buffering won't be able to decode the headers and thus won't be >> able to play the file. Mathias Kunter <mathiaskunter at yahoo.de> wrote: ... > Since MP3 and FLAC have well-supported > standards about cover art, why not simply > adopting this for OGG too? Placing the binary > coverart structure from > http://flac.sourceforge.net/format.html#metadata_block_picture > within a v...
2007 Apr 14
0
packets and OGG pages
On 3/15/07, Conrad Parker <conrad@metadecks.org> wrote: > On 15/03/07, Ralph Giles <giles@xiph.org> wrote: > > On Wed, Mar 14, 2007 at 12:23:47PM +0000, Mathias Kunter wrote: > > > > > > In contrast to that, http://www.ietf.org/rfc/rfc3533.txt stats the following: > > > "Ogg Vorbis provides the name and revision of the Vorbis codec, > > > the audio rate and the audio quality on the Ogg Vorbis bos page. > > > It al...
2023 Jan 19
0
Ambiguity regarding granule position
..., and the granule position > is set to ?-1?. So, the granule position of a page that is entirely spanned by a single HEADER packet is not well defined. It may either be zero or -1 according to the specification. Please consider to clarify this. Thank you very much! With best regards Mathias Kunter
2008 Mar 18
2
Determining the duration of an ogg vorbis file
Hi all, I've got a question on regarding how to find out the duration of an ogg vorbis file. Sorry if it should already be mentioned somewhere in the docs, but I couldn't find out how to do it the best way. So, I can read the [bitrate_nominal] field from the identification header (if it is set), find out the size of the audio data (by subtracting the size of the three headers from the
2008 Mar 21
0
AW: Determining the duration of an ogg vorbis file
Thank you very much for your help, it worked that way. Mathias ----- Urspr?ngliche Mail ---- Von: "xiphmont@xiph.org" <xiphmont@xiph.org> An: Conrad Parker <conrad@metadecks.org> CC: Mathias Kunter <mathiaskunter@yahoo.de>; vorbis-dev@xiph.org Gesendet: Donnerstag, den 20. M?rz 2008, 12:49:16 Uhr Betreff: Re: [Vorbis-dev] Determining the duration of an ogg vorbis file On Thu, Mar 20, 2008 at 4:34 AM, Conrad Parker <conrad@metadecks.org> wrote: > The granulpos field of the la...
2007 Mar 21
1
.NET tagging library for ogg Vorbis
Hello, I've mainly finished the native ogg Vorbis tagging .NET library. It already works well for reading and writing the vorbis comments for the files I tested. The library only rewrites the entire file if it has to, and adds 2 K padding in this case so that further changes of the comments won't make it nescessary to rewrite the whole file again. I found out foobar2000 also does it this
2008 Apr 15
1
base64 ALBUMART vorbiscomment (was Re: [ogg-dev] Ogg/Spots and Ogg/MNG)
Beside that, multiplexed logical streams suffer from pretty bad software / hardware support, isn't it? It's better to display album art as text if the player doesn't recognize the base64 album art, than being unable to even play the file. ----- Urspr?ngliche Mail ---- Von: Kyungjun Lee <kjoonlee at gmail.com> An: xiphmont at xiph.org CC: vorbis-dev at xiph.org Gesendet:
2008 Oct 18
1
Album art - requirements
>> So, a possible way to encode album art would be: >> >> - a Skeleton stream with appropriate header messages >> - one Kate stream per image, carrying a PNG image >> (alternatively, use Ogg/MNG, if someone brings it from the dead) >> [...] Silvia wrote: >Interesting proposal. Not sure it won't over-complicate album art though... Well yes, of course
2007 Mar 14
1
AW: AW: packets and OGG pages
OK, I've found the answer for one of my previous question myself in the meantime. The comment header can of course be split over more than 1 ogg page since the comment header can be greater than 64K. It also seems to be possible that both comment AND setup headers are placed on a single ogg page only (as stated in the Voribs specs). Due to the fact that the first audio packet also begins on
2007 Apr 20
3
AW: .NET tagging library for ogg Vorbis and ogg FLAC
Hello, I'm still working on the native .NET ogg tagging library. It already works well for non-multiplexed ogg vorbis, ogg flac and native flac files. Concerning multiplexed files, I've got two short questions: 1) Is it valid to insert an "empty" page into the stream which simply contains the binary value 0 for the page_segments counter, and which therefore contains no segment
2007 Mar 15
1
AW: packets and OGG pages
Ralph, thanks for your help. >>Since the length of the precedent identification header is fixed, this even is a fixed offset >>into the logical ogg stream. >This will work for all the vorbis-only files I've seen (because no one >pads the first packet). You should really implement a proper ogg parser, >but by all means get a hack working first. I will of course use the