similar to: Muxing vorbis in WebM

Hey all, friendly ping :) Any help is much appreciated. On Thu, Jun 18, 2015 at 6:56 PM, Chris Cunningham <chcunningham at chromium.org > wrote: > 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

So, I abandoned the hope of using the ogg python bindings to do pure ogg container encoding. I started looking at the libogg in the hopes of retooling the bindings to follow a better object model and it actually looks like the problem is down in libogg, not the bindings. Am I crazy or does libogg rely on libvorbis to return ogg_packets, and that there are no functions that will build an ogg_packet

Is there a program currently available that will correctly mux a52/ac3 streams and theora streams into an ogg container? I've tried oggzmerge, and it will mux ac3 into ogm and correctly create a new ogm from an existing theora file, but it doesn't seem to put the two together correctly.

Hi, Searched in Google, browsed xiph vorbis sites but found no good information about how to get the current playtime out of the granuleposition of the ogg_packet. Anyone knows if there is any 'Programming with libvorbis' documentation out there, cause on xiph's site (http://www.xiph.org/vorbis/doc/) there's nothing :( Any help? THX, Tom

L'octidi 18 pluviôse, an CCXXV, Miscellaneous a écrit : > I've built some simple code on the excellent libvorbis API overview on > the xiph.org site, but the example relies on the ogg_packet struct for > final output and input to decoder, and shows now examples on how to do > without it. Why do you not want it? It is just a simple C struct to carry the packet's metadata.

Can I join many ogg_packet together and decode it to PCM? Or I have to encode each ogg_packet at a time? If each packet is 1024 long, can I join 1.5 of packet (1024+512), and decode that 1024+512 packet, and then decode the 512 left? Or I must decode a whole packet, and can't cut it or decode only some of it (not all) Thank you, <p><p>--- >8 ---- List archives:

L'octidi 18 pluviôse, an CCXXV, Miscellaneous a écrit : > > The RLP draft mentioned on the libvorbis docs page, are there sample > > implementations (in C) of this yet anywhere?  > Sorry that should say RTP, not RLP I am not sure I understand exactly what you are asking, but libavformat has a RTP packetizer that works for both Vorbis and Theora, implemented in rtpenc_xiph.c.

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:

Happy new millenium! Summary: I'm having a problem queueing up the ogg_packet results of vorbis_analyze() for later writing to an .ogg stream. The docs don't seem to say if this is permissable or not. Hence, I don't know if I'm using the API incorrectly, or if this is an actual bug. ----- Attached is a short patch to vorbis-tools/oggenc/encode.c (from CVS head, 01/01/01... I

Using libvorbis (1.3.5) I wish to extract the raw vorbis packets.  I've built some simple code on the excellent libvorbis API overview on the xiph.org site, but the example relies on the ogg_packet struct for final output and input to decoder, and shows now examples on how to do without it. Taking a look at the vorbis_bitstream_flush() function, which in the overview is the last step before

Hi, Attached is my patch to add theora encoding to ffmpeg's libavcodec (by using libtheora). I am requesting help to fix the bug I mention below and am seeking general comments before I submit the patch properly. Files encoded using this encoder have a problem playing in VLC. The files will not play unless "Drop late frames" has been unticked in the advanced video settings.

I'm trying to encode a picture from my webcam using the theora codec. The final "product" must encode a frame, send it over the network and decode it on "the other side". For now, it must only work locally so we don't care about the transmission. This is what I've understood till now: I have a char * buffer from the camera RG24,I convert it to YCbCr 4:4:4, I

I've made a lot of progress on my lossless Vorbis editing project. I have a few more questions about granulepos issues I don't quite understand. granulepos is a property of Ogg pages, yet it is a field in the ogg_packet struct. When reading packets from an Ogg stream, the granulepos is set to -1 for all packets except the last packet in a page. From this I infer that - for encoding,

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

(Cross posted to theora-dev@xiph.org and ffmpeg-devel@mplayerhq.hu) I am working towards adding Theora encoding support to libavcodec in FFmpeg. I am doing this by simply calling libtheora from libavcodec. I am at the point where I can execute: "./ffmpeg -v 100 -i test.wmv -f avi -an -vcodec theora -b 1000000 -y test.avi" I get some whirring and an output file written. My calls to

Hi. I'm trying to implement Ogg/Vorbis support for the MPEG4IP project. The goal is to support Ogg/Vorbis audio for MPEG-4 streaming. So far I have managed to make the encoder save Ogg packets as an Audio object in an .mp4 file. As a side effect, it can also save Ogg pages in an .ogg file playable by xmms, but that's no big deal. So what I'm doing is this. First the init part. a)

Hello, I need to demux video files created with ffmpeg2theora 0.28+svn18147 I have ogminfo v1.5 and getting this error (ogminfo.c) OGG stream 1 is of an unknown type (bad header?) (ogminfo.c) OGG stream 2 is of an unknown type (bad header?) (ogminfo.c) (a1/serial 1092562206) Vorbis audio (channels 2 rate 48000) Is possible, that ogminfo is older then ffmpeg2theora ? Or what can be the reason?

I was wondering. When doing ogg only encoding, how do you mark end of stream? I am setting ogg_packet.e_o_s and then submitting it via ogg_stream_packetin() and then, because its the last potential page ogg_stream_flush()ing it. But when I walk through the file, EOS is not set on that logical bitstream. I have been using oggenc.c/encoder.c and oggdec.c/decoder.c for examples, but because the

FYI, Unless you've been checking the FLAC site you might have missed some encouraging things that have happened in the last few months. I haven't really been announcing things in the lists along the way, but to summarize: - Primus and Phish have been selling soundboard recordings of shows in FLAC - Magnatune (an indie label) offers their whole catalog in FLAC and Vorbis now - More

FYI, Unless you've been checking the FLAC site you might have missed some encouraging things that have happened in the last few months. I haven't really been announcing things in the lists along the way, but to summarize: - Primus and Phish have been selling soundboard recordings of shows in FLAC - Magnatune (an indie label) offers their whole catalog in FLAC and Vorbis now - More