Hello all, I'm sure that this must have been answered by someone in the past, but I couldn't find it. I have downloaded the Theora files of the 6uadec Gnome conference from: stream.fluendo.com/archive/6uadec While it is great that they have them available, most of them seem to have a lot of video of empty room before the speaker starts (sometimes 20 minutes or so). I am wanting to give these to a couple of people and so would like to snip that 20 minutes off and end up with smaller/shorter files which are minus the guff. Is there are simple tool with which I can do this? Secondly; if Vorbis is poor at low quality levels and Xiph develops Speex specifically for speech, why aren't the audio tracks of conference speeches done in speex instead of Vorbis?? Is this because people are more likely to have Vorbis support than speex at this stage? Thanks in advance, Aaron -- whitehouse.org.nz -------------- next part -------------- A non-text attachment was scrubbed... Name: smime.p7s Type: application/x-pkcs7-signature Size: 3268 bytes Desc: S/MIME Cryptographic Signature Url : lists.xiph.org/pipermail/theora/attachments/20051030/b3ed5721/smime.bin
lists.xiph.org/pipermail/theora/2005-September/000983.html On 10/30/05, Aaron Whitehouse <lists@whitehouse.org.nz> wrote:> Hello all, > > I'm sure that this must have been answered by someone in the past, but I > couldn't find it. > > I have downloaded the Theora files of the 6uadec Gnome conference from: > stream.fluendo.com/archive/6uadec > > While it is great that they have them available, most of them seem to > have a lot of video of empty room before the speaker starts (sometimes > 20 minutes or so). I am wanting to give these to a couple of people and > so would like to snip that 20 minutes off and end up with > smaller/shorter files which are minus the guff. Is there are simple tool > with which I can do this? > > Secondly; if Vorbis is poor at low quality levels and Xiph develops > Speex specifically for speech, why aren't the audio tracks of conference > speeches done in speex instead of Vorbis?? Is this because people are > more likely to have Vorbis support than speex at this stage? > > Thanks in advance, > > Aaron > > -- > whitehouse.org.nz > >
Aaron Whitehouse
2005-Oct-30 03:39 UTC
[Theora] Re: Snipping the beginning off Theora files
pat cito wrote:> lists.xiph.org/pipermail/theora/2005-September/000983.htmlThank you for this, Pat. The advice in that message is to use oggz-tools which I have downloaded and read the manual of. I have come to the conclusion that it was not designed to do what I am wanting to do with it. It seems able to pull parts of a bitstream based on serial number or the type of stream (Vorbis, Theora etc.) but it does not seem able to output from a time to a time or anything. What I am hoping for is something like: cropogg --outputfile [path] --begintime 10:03 --endtime [end / 1:23:00] But perhaps I am being overly optimistic. I suppose that I could try to identify the serials of the first 20 minutes of pages and then use it, but it seems a very difficult way to do something quite common and simple. Theoretically all it needs to do is cut the first 20 mins of the data stream while leaving the three(?) headers intact, or writing new headers for the new stream (I believe that an ogg file missing the first 20 mins of the data stream would still be a valid file if the headers were intact). Thanks for your help and please let me know if I am just missing how to use oggz-tools properly. Aaron -- whitehouse.org.nz -------------- next part -------------- A non-text attachment was scrubbed... Name: smime.p7s Type: application/x-pkcs7-signature Size: 3268 bytes Desc: S/MIME Cryptographic Signature Url : lists.xiph.org/pipermail/theora/attachments/20051031/2f00bb53/smime.bin
I also know of 2 non-linear video editing tool: cinelerra.org that does import and export to theora kinodv.org that does export only AFAIK On 10/30/05, Aaron Whitehouse <lists@whitehouse.org.nz> wrote:> pat cito wrote: > > lists.xiph.org/pipermail/theora/2005-September/000983.html > > Thank you for this, Pat. The advice in that message is to use oggz-tools > which I have downloaded and read the manual of. I have come to the > conclusion that it was not designed to do what I am wanting to do with > it. It seems able to pull parts of a bitstream based on serial number or > the type of stream (Vorbis, Theora etc.) but it does not seem able to > output from a time to a time or anything. What I am hoping for is > something like: > > cropogg --outputfile [path] --begintime 10:03 --endtime [end / 1:23:00] > > But perhaps I am being overly optimistic. I suppose that I could try to > identify the serials of the first 20 minutes of pages and then use it, > but it seems a very difficult way to do something quite common and > simple. Theoretically all it needs to do is cut the first 20 mins of the > data stream while leaving the three(?) headers intact, or writing new > headers for the new stream (I believe that an ogg file missing the first > 20 mins of the data stream would still be a valid file if the headers > were intact). > > Thanks for your help and please let me know if I am just missing how to > use oggz-tools properly. > > Aaron > > -- > whitehouse.org.nz > >