I don't know how to change a video quality on the fly - I want to provide a slider with a preview window, so user could see the result immediately in this window. I tried to send ICM_COMPRESS_FRAMES_INFO to encoder or calling ICSetState() - with no success however. Am I doing something wrong ? How can I set 'lDataRate', 'dwRate', 'dwScale' parameters ? I tried every possible combinations and still no effects .. Also changing lKeyRate seems to have no effects ... Thanks in advance, Kamil <p>--- >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 'theora-dev-request@xiph.org' containing only the word 'unsubscribe' in the body. No subject is needed. Unsubscribe messages sent to the list will be ignored/filtered.
Are you talking about the recent Theora alpha, or VP3 codecs for
Windows/Quicktime?
We're considering creating a new discussion list to cover legacy VP3 codecs,
wondering if there's interest here for that. Right now this list covers two
completely different codebases, the original VP3 VFW/QT codecs (which are in
fact three different projects for three OS's), and the Theora OGG project
(presently Linux-based). Pending a new list, please preface your questions with
exactly what code you are building, ie VP3/VFW, VP3/QT/OSX, Theora Alpha, etc.
-----Original Message-----
From: KAMIL D [mailto:kamil_dobkowski@alnet.com.pl]
Sent: Fri 10/11/2002 12:05 PM
To: theora-dev@xiph.org
Cc:
Subject: [theora-dev] Changing video quality during encoding
I don't know how to change a video quality on the fly - I want to
provide a slider with a preview window, so user could see the result immediately
in this window. I tried to send ICM_COMPRESS_FRAMES_INFO to encoder or calling
ICSetState() - with no success however. Am I doing something wrong ? How can I
set 'lDataRate', 'dwRate', 'dwScale' parameters ? I
tried every possible combinations and still no effects ..
Also changing lKeyRate seems to have no effects ...
Thanks in advance,
Kamil
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> Are you talking about the recent Theora alpha, or VP3 codecs for Windows/Quicktime? > > We're considering creating a new discussion list to cover legacy VP3 codecs,wondering if there's interest here for that. > Right now this list covers two completely different codebases, the original VP3 VFW/QT codecs (which are in fact three >different projects for three OS's), and the Theora OGG project (presently Linux-based). Pending a new list, please preface >your questions with exactly what code you are building, ie VP3/VFW, VP3/QT/OSX, Theora Alpha, etc.THanks for your answer, I use VFW codec. Currently I'm looking for a cheap ( or free ) low-bandwidth video codec for my project ( commercial ). I deep through Internet and found nothing ... Uff VP3 seems only reasonable codec around ( I didn't get a response from On2 yet, but they are probably too expensive ), DivX has a limit of max 75 codecs running at a time ( I need more ). Latest build of Xvid output hangs my MediaPlayer and crashes when closing. Sigma-stolen codec doesn't work at all. I don't know the license of Microsoft MPEG4.3. I'm looking further because VP3 seems a little to slow - it has a very good image quality even at a low bitrates, so maybe there are some pre- post- processing routines, which slows it down ? I don't need such quality - maybe it would be possible to just remove this routines from the code to speed it up ? Or maybe you know some other reasonable codecs ( even including H.263 ). ( Yes, I know those are little off-topic questions, but I don't know what to do ). Thanks in advance, Kamil <p><p><p>--- >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 'theora-dev-request@xiph.org' containing only the word 'unsubscribe' in the body. No subject is needed. Unsubscribe messages sent to the list will be ignored/filtered.
> DivX has a limit of max 75 codecs running at a time.Ups ! the same with VP31. Are codecs limited only to physical memory, or they use some other limited resources ? Thanks in advance, Kamil <p>--- >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 'theora-dev-request@xiph.org' containing only the word 'unsubscribe' in the body. No subject is needed. Unsubscribe messages sent to the list will be ignored/filtered.
frankly, I'm surprised it works at all. 75 is a rather large number.
-----Original Message-----
From: KAMIL D [mailto:kamil_dobkowski@alnet.com.pl]
Sent: Sat 10/12/2002 6:02 AM
To: theora-dev@xiph.org
Cc:
Subject: RE: RE : RE: [theora-dev] Changing video quality during
encoding
> DivX has a limit of max 75 codecs running at a time.
Ups ! the same with VP31. Are codecs limited only to physical memory, or
they use some other limited resources ?
Thanks in advance,
Kamil
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I don't know how to change a video quality on the fly - I want to provide a slider with a preview window, so user could see the result immediately in this window. I tried to send ICM_COMPRESS_FRAMES_INFO to encoder or calling ICSetState() - with no success however. Am I doing something wrong ? How can I set 'lDataRate', 'dwRate', 'dwScale' parameters ? I tried every possible combinations and still no effects .. Also changing lKeyRate seems to have no effects ... Thanks in advance, Kamil <p>Hello, i have the same problem. I don't know how to set the ICCOMPRESSFRAMES struct correctly by using the intel i263 codec. Can you tell me a setting of correct values to test this codec or can you recommend my a better codec for 128 kBit Videoconferencing? Thank you for supporting me, Martin --- >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 'theora-dev-request@xiph.org' containing only the word 'unsubscribe' in the body. No subject is needed. Unsubscribe messages sent to the list will be ignored/filtered.