search for: timecode

...e is no standard for putting metadata into an Ogg file. That metadata must be included in the codec. For example, what if I want to make a Theora movie and include information about the color space or embed an ICC profile? Or can I include general textual information, like copyright? What about timecode? Brendan

Hi, Is anyone aware of existing discussion on embedding the actual wall time (as in RFC-822 date-time) into Ogg streams of continuous or semi-continuous recordings? And any methods of addressing Ogg streams by the wall time in lieu of a standard timecode? Ideally, users would be able to take note of the wall time during an event of interest, then retrieve the segment by that same wall time rather than searching from "0:00" at the start of the recording. Sincerely, George

...courage that. Theora is a distribution format; it's best to convert to one of the fixed output colourspaces at encode time if care about calibration. See section 4.3 of http://theora.org/doc/Theora.pdf for details. > Or can I include general textual information, like copyright? What about timecode? You can include standard tag information in theora videos like title, author, copyright and license; just put them in the theora metadata header. I'm not aware of a convention for timecode (if you mean timecode offset of the first frame; theora is a fixed-framerate codec so there's no nee...

...http://www.cdindex.org/dtd/TrackInfo.dtd, but I'm conserned that it's too specialized for video and we'll end up having a special case for audio-only files. There are a couple of general issues here. Micheal Smith suggested on irc that an important distinction to make is between "timecoded" data like audio, video, and scrolling lyrics, and "timeless" data like the production notes, or the fact that logical bitstream 12 is the pop-up-video overlay in bengalese. My proposal was that each type or instance of timecoded data be encapsulated in its own logical stream. For...

...ta has been collected together in the Xiph Wiki at: https://wiki.xiph.org/Metadata > For example, what if I want to make a Theora movie and include information > about the color space or embed an ICC profile? Or can I include general > textual information, like copyright? What about timecode? I have never used Theora, but according to the spec this stream can include VorbisComments. Details of these are at: http://xiph.org/vorbis/doc/v-comment.html and at: https://wiki.xiph.org/VorbisComment To address your specific questions: 1. There is no standard field name for color...

...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 an Ogg page provides you with the granule position, Matroska provides a much less precise timecode, measured in milliseconds. So the second frame at time 41.6666ms gets rounded to 42ms in Matroska. If I seek using the Matroska timecode use it to calculate the granule position, I am off by a little. It's probably fine for playback, but Premiere asks me for audio at random times and they re...

On Wed, May 24, 2017 10:45 am, Warren Young wrote: > On May 24, 2017, at 8:52 AM, Chris Adams <linux at cmadams.net> wrote: >> >> Once upon a time, Warren Young <warren at etr-usa.com> said: >>> a. It???s transmitting from a fixed location in a time zone you >>> probably aren???t in ??? US Mountain ??? being the least populous of >>> the lower

...default/files/products/documents/GPS-Antenna_AppNote_%28GPS-X-08014%29.pdf?utm_source=en%2Fimages%2Fdownloads%2FProduct_Docs%2FGPS_Antennas_ApplicationNote%28GPS-X-08014%29.pdf I'm running an NTP setup here with our secondary being a CentOS box using an Agilent Z3816 GPS-disciplined OCXO with timecode and 1PPS outputs. Our primary is a Datum/Symmetricom SSU2000 modular system with a cesium PRS, a rubidium stratum 2E secondary clock, and an OCXO stratum 3E tertiary clock. The cesium PRS is down at the moment, but the rubudium is close enough for current work. The CentOS box runs very well...

...ributed with extensive liner notes in multiple languages, otherwise identical. In the case of lyrics/subtitles we should create separate streams for each translation, but do we want to do that for the static metadata? Does RDF already have a way to handle this? Most of our discussion was about the timecoded metadata. The proverbial scrolling lyrics, but this must also serve for subtitles (in multiple languanges), transcripts, commentary, headlines, guitar tabulature, and so on. Our most important concern to maintain maximum flexibility. As I've said before, I think it's important to have at...

...d to knowing the start time and elapsed time. When recording radio stations (for logging purposes) or environmental noise (which may include long periods of silence that don't get logged) and telephone call speech (for "training purposes") it is often more practical to have a constant timecode at playback that corresponds to the "wall clock" UTC at time of recording. The article proposes 2 methods (with working Perl code) to embed the time as in-band noise in the audio. One method (LSB stealing) requires lossless encoding; the other is audible but can survive lossy encoding....

...orbiscomment. If you want a full metadata stream you use Kate. Silvia. > > For example, what if I want to make a Theora movie and include information > > about the color space or embed an ICC profile? Or can I include general > > textual information, like copyright? What about timecode? > > I have never used Theora, but according to the > spec this stream can include VorbisComments. > Details of these are at: > http://xiph.org/vorbis/doc/v-comment.html > > and at: > https://wiki.xiph.org/VorbisComment > > To address your specific questions: &...

Is it at all possible to synchronize listeners so they hear the audio at the exact same time? It doesn't matter if the source and listener is a few seconds different. Someone I know wants to send Ogg Vorbis encoded audio across a wireless LAN using Icecast to 2 LPFM transmitters on the same frequency, and they really need to be closely synchronized to prevent echo in an overlap coverage

Is it at all possible to synchronize listeners so they hear the audio at the exact same time? It doesn't matter if the source and listener is a few seconds different. Someone I know wants to send Ogg Vorbis encoded audio across a wireless LAN using Icecast to 2 LPFM transmitters on the same frequency, and they really need to be closely synchronized to prevent echo in an overlap coverage

...text_input_with_auto_complete seem not to be able to account for the :index. I can see in the source why this is the case. I have a workaround that is an ugly kludge. I am wondering if there is any less-ugly kludge that I can try. Again, I would like to do <%= text_input_with_auto_complete :timecode, :timecodedesc, :index => timecode_counter %> but instead have to do this mess <%= text_field "timecode", "timecodedesc", :index => timedetail_counter %> <div class="auto_complete" id="timecode_<%= timedetail_counter.to_s%>_timecodedesc...

...mpeg2theora -a 0 -v 5 -f dv -x 320 -y 240 -o /dev/stdout - | oggfwd myserver.org 8000 password /test.ogg stream starts for and for a sec and appears on icecast2, but then it fails with : Found AV/C device with GUID 0x0020110101009ce9 Capture Started "stdout": buffer underrun near: timecode 04:42:10.03 date ????.??.?? ??:??:?? This error means that the frames could not be written fast enough. oggfwd: Connected to server Input #0, dv, from 'pipe:': Duration: N/A, start: 0.000000, bitrate: 28800 kb/s Stream #0.0: Invalid Codec type 25, 25 tbr, 25 tbn, 25 tbc Stream #0.1:...

...antly create that pre allocated file space that it wants to create on a Samba share? Are their any Samba settings that could make this possible? It would be a coup for Samba! BTW, Apple's IMovie doesn't go through this pre allocation business. But, alas, IMovie doesn't capture timecode data, so Final Cut users who want to work with Samba shares can't simply switch to IMovie for capturing their videos. Hoping for an insightful reply, Andy Liebman

...s are put on top of each other at once. Layered animations would then be animated animations :) . In animations, layers could even be shared for different frames! For movies this layer function could be used for fx. translation of text in the picture (normal subtitling should of course be text with timecodes). So, what do you think ? :) Gerry --- >8 ---- List archives: http://www.xiph.org/archives/ Ogg project homepage: http://www.xiph.org/ogg/ To unsubscribe from this list, send a message to 'vorbis-dev-request@xiph.org' containing only the word 'unsubscribe' in the body. No s...

...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 same timecode). 2. FFmpeg seems to use granulepos for presentation timestamp - is this correct? See here: https://github.com/FFmpeg/FFmpeg/blob/master/libavcodec/libvorbisenc.c#L345l To me it seems the breakdown of ffmpeg's libvorbis_encode_frame is: - get an ogg_packet from libvorbis (I thin...

...r inclusion in ogg. But, for image-series-as-animation, there is a frame counter, a (variable) inter-frame delay in arbitrary units, and a scale for converting that to real time. Additionally, there are seek chucks that can mark an absolute position in the stream, both in terms of frame number and timecode. (These can be either 4 or 8 byte integers.) Would that be sufficient? > Also, is there a MNG mailing list? I couldn't find one on the > web site. While it's still marked a 'draft specification' mng has been frozen since May 1999, so you'd have to be pretty compelling...

Hi, I'm having issues connecting Garmin GPS 18 to COM1 on 9.1, I get nothing but silence. Identical setup works absolutely fine with Linux. I've got PPS wire connected to DCD, but that seems to make no difference on Linux, so I presume it shouldn't affect fbsd either. On Linux, I get: $ uname -a Linux ubuntu 3.8.0-19-generic #29-Ubuntu SMP Wed Apr 17 18:16:28 UTC 2013 x86_64 x86_64