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OpenDivX digest, Vol 1 #29 - 5 msgs



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Today's Topics:

   1. Using OpenDivX (Erick Calder)
   2. OpenDivX Encoder -> OpenDivX (Darrius "Junto" Thompson)
   3. OpenDivX Decoder ->OpenDivX (Darrius "Junto" Thompson)
   4. General Development Discussion - All Projects -> OpenDivX (Darrius "Junto" Thompson)
   5. Re: encore 0.48 (Jonathan Tarbox)

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Message: 1
From: "Erick Calder" <[email protected]>
To: <[email protected]>
Date: Fri, 2 Mar 2001 09:44:12 -0800
Subject: [OpenDivX] Using OpenDivX

sorry for being a big ignoramus but I've downloaded OpenDivX for Win32 and
installed it but there are no instructions on how to use it!

how do I play content with it and can anyone suggest where I might get some
content?

1k thx - ekkis

p.s. please reply directly to me as well at [email protected]



--__--__--

Message: 2
Date: Fri, 2 Mar 2001 18:11:19 -0800
From: "Darrius \"Junto\" Thompson" <[email protected]>
To: <[email protected]>
Subject: [OpenDivX] OpenDivX Encoder -> OpenDivX






Topic:		Fast scene change detection
Author:		gruel
Posted:		 2001-03-02 06:38
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Hi,

I am still thinking about parallelizing the encoder and before I going
into literature and source:=20

Is there a fast way of detecting scene changes in input data?=20

More or less a  routine that splits a given video stream  into scene
segments, giving the "addresses" relative to the stream.=20

No motion detection/encoding should be performed, because thats what the
other processors are supposed to do. This routine is supposed to run on
the master, that sends the scenes to the slaves for real encoding step.=20

Any reference or code snip would be nice,

chl[ This message was edited by: gruel on 2001-03-02 06:41 ]


Topic:		How pass YUV  4:1:1 to YUV 4:2:0
Author:		aleggs
Posted:		 2001-03-02 10:05
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I don't agree with your statments=20
:hot:


Topic:		Adobe Premiere Don't Encode Audio To Mp3
Author:		elbows
Posted:		 2001-03-02 11:06
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You are quite correct, this is a Premiere issue.

It might be resolved with Premiere 6, I havent tried yet, but I doubt
it.

You have 2 choices:

1) Export using PCM or other audio format that Premier supports.  Load
the video into VirtualDub, set video to direct stream copy so it doesnt
recompress the video, then set audio to encode in mp3 or whatever you
want.  Save the new file and bingo, it shouldnt take too long either as
the video isnt being recompressed.

2) Use AVISYNTH Premiere plugin to export the video.  This allows you to
chain the output from Premiere to another program such as virtualdub,
then you set Virtualdub to encode in Divx for video and MP3 for audio.

Hope that helps



--__--__--

Message: 3
Date: Fri, 2 Mar 2001 18:11:31 -0800
From: "Darrius \"Junto\" Thompson" <[email protected]>
To: <[email protected]>
Subject: [OpenDivX] OpenDivX Decoder ->OpenDivX



Topic:		Faster code
Author:		mcmab
Posted:		 2001-03-01 21:20
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This is the debug code, the one you used for profiling?  I should have
made that clear, sorry.  Stach checking can always be turned off.

However the release code, without the stack checking still pushes/pops
esi, edi, ebx & ebp. That's still 16 bytes pushed/popped for every 64
bytes of data. There's no need to save any of these registers, and
"inline" would save the additional call/ret.

Best regards


Topic:		DivX 4a48 Windoze version doesn't work
Author:		siko
Posted:		 2001-03-02 04:31
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Here on a 98 w/MP7 and DX8 couldnt run anything... too!=20

where could I find the 3.x version?

thanks!


Topic:		Divx support in OpenDivx Decoder.
Author:		wanton
Posted:		 2001-03-02 07:21
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Is there any chance that you will add support for decoding original DivX
to decoder part of the codec? I hate see when i future processors will
change and old divx codec doesn't work and there is no way to watch old
video material encoded with divx exept with old machines. I know
original DivX was hack of microsoft codec and it isn't pure mpeg-4 but i
still hope it still done for future compatibility's sake=20


Topic:		DIV3 help
Author:		wanton
Posted:		 2001-03-02 07:25
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You know that DivX and OpenDivX are diffrent codecs do you? Meaning
OpenDivX can't decode DivX and DivX can't decode OpenDivx. If you wan't
to play DIV3 (original DivX) you need original DivX codec (hacked
microsoft codec).
[ This message was edited by: wanton on 2001-03-02 07:26 ]


Topic:		DivX 4a48 Windoze version doesn't work
Author:		elbows
Posted:		 2001-03-02 11:12
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Movies encoded with divx 3.11 are not supposed to play back with
opendivx.  You can however have both Opendivx and Divx 3.11 alpha
installed on the same system, they dont conflict with eachother.


Topic:		Win 2000 Install
Author:		edouardliu
Posted:		 2001-03-02 19:25
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what i did was more sophisticated than what e7abe7a offered. in addition
(yes, i know how to use regsvr32) to unregistering both old and new
codec the regsrv32 way, i also did a thorough scan in the registry and
cleared up any dandling entries, especially those in HKEY_CLASSES_ROOT.

after this, i tried installing alpha48 2.0.1 again, and still failed.
now i'm baffled. why would people like 'thekid' always think i don't get
the right codec while i actually did more investigation? ahem.

please, i write programs myself, so some respect from a programmer to a
programmer is always preferrable. don't give me that one billionth time
crap. do you think i downloaded a linux codec for win32?

enough said.



--__--__--

Message: 4
Date: Fri, 2 Mar 2001 18:11:44 -0800
From: "Darrius \"Junto\" Thompson" <[email protected]>
To: <[email protected]>
Subject: [OpenDivX] General Development Discussion - All Projects -> OpenDivX




Topic:		AVICapture codec + DirectShow
Author:		c0redumb
Posted:		 2001-03-01 21:48
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I have never tried this, but I think probably the problem may be solved
by changing when you set bitrate.=20

Maybe you can try to set the bitrate just before the codec is called. Do
not close and release the dll driver after the seting and before the
encoding. Otherwise, a new instance of the driver will be created with
the setting at default values. As a first guess, it looks like the
values are set in one instance, and the encoding is using another new
instance.

Please let me know if this helps.

c0redumb


Topic:		divx color
Author:		numlock
Posted:		 2001-03-01 22:22
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someone has to know .... anyone?!?!


Topic:		Not YCbCr420?
Author:		Brians256
Posted:		 2001-03-02 16:01
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--------
Thanks. I found a good FAQ that explained it too.  It seems that the
YCbCr colorspace is more constrained for the possible values, right?
Also, there are a couple of differing conversions depending upon what
frequencies are more important (perceptually).

Still learning...


Topic:		Don't understand thing about performance. Need realtime.
Author:		Constantine
Posted:		 2001-03-02 16:15
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--------
Quote:
On 2001-03-01 20:37, sanhan wrote:
Why not use Intel Parallel Primitives?

It's good for Intel AND AMD Cpu's.


hm.... Thanks - will take a look on it.


Topic:		What movie filetype is the BEST overall?
Author:		Guest
Posted:		 2001-03-02 16:57
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hi

which movie filetype is the best (small file size,
fast playing, good qulity picture etc) as i hear people saying .RM
files are the best.......is this true?

be great if someone could explain it all=20

Thanks




--__--__--

Message: 5
From: "Jonathan Tarbox" <[email protected]>
To: <[email protected]>
Subject: Re: [OpenDivX] encore 0.48
Date: Sat, 3 Mar 2001 03:29:37 -0800

I am having the same problems with the 48 library.  By moving back to the 47
library I can encode some video streams.  However, I have managed to get
streams that will crash my BeOS 47 decoder, and also the Windows 48 decoder
under Win2k.  So I know that wasn't me. Tried getting xmps 0.2.0 to work
under Redhat 6.2 to test there, but it just doesn't like me or something.

I have been having tons of problems with the encore library really..
clipping off of the bottom of video.. and sometimes causing the decore
library to seg fault when calling free when closing the library.. (don't
ask, I can't figure it out..)


John

----- Original Message -----
From: "Arnaud Zanetti" <[email protected]>
To: <[email protected]>
Sent: Friday, March 02, 2001 3:27 AM
Subject: [OpenDivX] encore 0.48


> hi !
> I used to encode and decode without any problem with 0.47. Since I
upgraded to 0.48, I still can
> decode stream previously encoded with 0.47 (including VO & VOL headers
taken from a stream
> encoded with M$ fdis), but I cannot decode stream encoded with 0.48.
What's wrong with 0.48 ?
> Has the encore API changed in some way (apart from taking YUV instead of
RGB as input) ? Does
> the decore 0.48 really take VO & VOL headers into account ?
> I also have a problem with stream encoded with the codec 0.48 (both using
FlaskMpeg and
> VirtualDub) : mplayer2 crashes after attempting to download a codec.
>
>
>
>
> _______________________________________________
> OpenDivX mailing list
> [email protected]
> http://lists.projectmayo.com/mailman/listinfo/opendivx
>




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