Talk:FFmpeg Summer Of Code 2009 - Revision history

Angustia at 22:40, 27 March 2009

2009-03-27T22:40:37Z

← Older revision		Revision as of 15:40, 27 March 2009
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	:I strongly support this idea!--[[User:Ce\|Ce]] 05:28, 21 March 2009 (EDT)		:I strongly support this idea!--[[User:Ce\|Ce]] 05:28, 21 March 2009 (EDT)
	:I'm against it. Whatever is unfinished should be up for grabs. --[[User:DonDiego\|DonDiego]] 14:13, 23 March 2009 (EDT)		:I'm against it. Whatever is unfinished should be up for grabs. --[[User:DonDiego\|DonDiego]] 14:13, 23 March 2009 (EDT)
			::I removed mine. Others may do what they wish with theirs. ----

Superdump: /* AAC-LC encoder completion and psycho-acoustic model improvement */

2009-03-24T12:49:59Z

AAC-LC encoder completion and psycho-acoustic model improvement

← Older revision		Revision as of 05:49, 24 March 2009
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	: Let's see. First point - working on it; second point - current code is a mess of 3GPP and FAAC (and reference encoder) functions for quantisation; third point - that's my near-future goal; fourth point - I'm making them switchable, but for now they have unreasonable encoding speed; fifth point - implemented it long ago (rather slow though). In any case I will lend my hand or hoof or whatever on this. Current code is missing rate control and fast quantisation stuff, the rest is working. --[[User:Kostya\|Kostya]] 01:51, 23 March 2009 (EDT)		: Let's see. First point - working on it; second point - current code is a mess of 3GPP and FAAC (and reference encoder) functions for quantisation; third point - that's my near-future goal; fourth point - I'm making them switchable, but for now they have unreasonable encoding speed; fifth point - implemented it long ago (rather slow though). In any case I will lend my hand or hoof or whatever on this. Current code is missing rate control and fast quantisation stuff, the rest is working. --[[User:Kostya\|Kostya]] 01:51, 23 March 2009 (EDT)

			:: Well, you're still a student aren't you? Would you like to work on this over summer? For what do you think you will apply this year? --[[User:superdump\|Robert Swain]]

	=== AMR-NB and QCELP ===		=== AMR-NB and QCELP ===

DonDiego: Add comments to Speex and SoC 2008 project discussions.

2009-03-23T18:13:19Z

Add comments to Speex and SoC 2008 project discussions.

← Older revision		Revision as of 11:13, 23 March 2009
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	:::::AFAIU, you forgot to commit one patch and didn't ping the other (yes, this is always necessary for Mans' code).--[[User:Ce\|Ce]] 04:54, 20 March 2009 (EDT)		:::::AFAIU, you forgot to commit one patch and didn't ping the other (yes, this is always necessary for Mans' code).--[[User:Ce\|Ce]] 04:54, 20 March 2009 (EDT)
	::::::Theora stack corruption was applied I just must have forgotten the post commit message. Broken continuation was rejected. And from the Thusnelda bug we are still missing 4:2:2. --[[User:AConverse\|AConverse]] 12:50, 20 March 2009 (EDT)		::::::Theora stack corruption was applied I just must have forgotten the post commit message. Broken continuation was rejected. And from the Thusnelda bug we are still missing 4:2:2. --[[User:AConverse\|AConverse]] 12:50, 20 March 2009 (EDT)
			::: I think there are precise quality requirements for decoder: They have to produce bitexact output. So I dont see a problem with having our own Speex decoder. --[[User:DonDiego\|DonDiego]] 14:13, 23 March 2009 (EDT)

	=== DTS-HD Master Audio decoder? ===		=== DTS-HD Master Audio decoder? ===
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	I think all 2008 GSoC projects are still being actively worked upon. kostya, atrange, sascha, mind if I remove them from this page?--[[User:Angustia\|Angustia]] 17:13, 20 March 2009 (EDT)		I think all 2008 GSoC projects are still being actively worked upon. kostya, atrange, sascha, mind if I remove them from this page?--[[User:Angustia\|Angustia]] 17:13, 20 March 2009 (EDT)
	:I strongly support this idea!--[[User:Ce\|Ce]] 05:28, 21 March 2009 (EDT)		:I strongly support this idea!--[[User:Ce\|Ce]] 05:28, 21 March 2009 (EDT)
			:I'm against it. Whatever is unfinished should be up for grabs. --[[User:DonDiego\|DonDiego]] 14:13, 23 March 2009 (EDT)

Kostya: /* AAC-LC encoder completion and psycho-acoustic model improvement */

2009-03-23T05:51:57Z

AAC-LC encoder completion and psycho-acoustic model improvement

← Older revision		Revision as of 22:51, 22 March 2009
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	How does that sound? I'd mentor this if Kostya was going to get it just so he could dedicate some time to it and so that he can be guided a little as to how to approach the problems at a high level. If anyone else is going to do it, I expect some more hands-on research would be needed. --[[User:superdump\|Robert Swain]]		How does that sound? I'd mentor this if Kostya was going to get it just so he could dedicate some time to it and so that he can be guided a little as to how to approach the problems at a high level. If anyone else is going to do it, I expect some more hands-on research would be needed. --[[User:superdump\|Robert Swain]]

			: Let's see. First point - working on it; second point - current code is a mess of 3GPP and FAAC (and reference encoder) functions for quantisation; third point - that's my near-future goal; fourth point - I'm making them switchable, but for now they have unreasonable encoding speed; fifth point - implemented it long ago (rather slow though). In any case I will lend my hand or hoof or whatever on this. Current code is missing rate control and fast quantisation stuff, the rest is working. --[[User:Kostya\|Kostya]] 01:51, 23 March 2009 (EDT)

	=== AMR-NB and QCELP ===		=== AMR-NB and QCELP ===

Jai: /* JPEG2000 project */

2009-03-23T05:00:19Z

JPEG2000 project

← Older revision		Revision as of 22:00, 22 March 2009
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	== JPEG2000 project ==		== JPEG2000 project ==
	A note should be added to this one saying that you should also make sure it handles the JPEG2000 images inside the R3D files. [[User:Dashcloud\|Dashcloud]] 23:00, 19 March 2009 (EDT)		A note should be added to this one saying that you should also make sure it handles the JPEG2000 images inside the R3D files. [[User:Dashcloud\|Dashcloud]] 23:00, 19 March 2009 (EDT)
			:Conversion of Y1CbCrY2 data stored in r3d jpeg2k codestreams to rgb or whatever else does not belong in a jpeg2k decoder IMHO.
			:Also, the exact debayer algorithm RED uses is not known iirc. But we can have some approximation which is useful for previews.-- Jai

	== 2008 GSoC Projects ==		== 2008 GSoC Projects ==

Superdump at 22:26, 22 March 2009

2009-03-22T22:26:50Z

← Older revision		Revision as of 15:26, 22 March 2009
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			=== AAC-LC encoder completion and psycho-acoustic model improvement ===

			* Evaluate existing psycho-acoustic model implementations (3gpp and FAAC at least at this stage) to find a combination that is as good as or better than FAAC quality-wise
			* Implement this combination of heuristics/algorithms
			* Make sure the encoder is close to/faster than FAAC and close to/better quality than FAAC
			* Evaluate other algorithms to offer better quality with reasonable encoding speed impacts and allow them to be switchable through command line options
			* Implement sane brute force rate-distortion optimal method

			How does that sound? I'd mentor this if Kostya was going to get it just so he could dedicate some time to it and so that he can be guided a little as to how to approach the problems at a high level. If anyone else is going to do it, I expect some more hands-on research would be needed. --[[User:superdump\|Robert Swain]]

	=== AMR-NB and QCELP ===		=== AMR-NB and QCELP ===

Superdump at 22:02, 22 March 2009

2009-03-22T22:02:12Z

← Older revision		Revision as of 15:02, 22 March 2009
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			=== AMR-NB and QCELP ===

			Do people think it would be reasonable to join these two into one task? Once AMR-NB is finished off and in trunk, I suspect remaining features that are non-mandatory can be shared between multiple of the CELP codecs. I need to research which functions but I suspect things like silent frames, comfort noise and similar. --[[User:superdump\|Robert Swain]]

	=== S/PDIF muxer ===		=== S/PDIF muxer ===

Ce: /* 2008 GSoC Projects */

2009-03-21T09:28:40Z

2008 GSoC Projects

← Older revision		Revision as of 02:28, 21 March 2009
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	I think all 2008 GSoC projects are still being actively worked upon. kostya, atrange, sascha, mind if I remove them from this page?--[[User:Angustia\|Angustia]] 17:13, 20 March 2009 (EDT)		I think all 2008 GSoC projects are still being actively worked upon. kostya, atrange, sascha, mind if I remove them from this page?--[[User:Angustia\|Angustia]] 17:13, 20 March 2009 (EDT)
			:I strongly support this idea!--[[User:Ce\|Ce]] 05:28, 21 March 2009 (EDT)

Angustia: 2008 GSoC Projects

2009-03-20T21:13:42Z

2008 GSoC Projects

← Older revision		Revision as of 14:13, 20 March 2009
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	== JPEG2000 project ==		== JPEG2000 project ==
	A note should be added to this one saying that you should also make sure it handles the JPEG2000 images inside the R3D files. [[User:Dashcloud\|Dashcloud]] 23:00, 19 March 2009 (EDT)		A note should be added to this one saying that you should also make sure it handles the JPEG2000 images inside the R3D files. [[User:Dashcloud\|Dashcloud]] 23:00, 19 March 2009 (EDT)

			== 2008 GSoC Projects ==

			I think all 2008 GSoC projects are still being actively worked upon. kostya, atrange, sascha, mind if I remove them from this page?--[[User:Angustia\|Angustia]] 17:13, 20 March 2009 (EDT)

AConverse: /* speex + gsm */

2009-03-20T16:50:41Z

speex + gsm

← Older revision		Revision as of 09:50, 20 March 2009
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	::::[http://roundup.ffmpeg.org/roundup/ffmpeg/issue798 issue798] [https://roundup.mplayerhq.hu/roundup/ffmpeg/issue579 issue579] to start --[[User:AConverse\|AConverse]] 23:59, 19 March 2009 (EDT)		::::[http://roundup.ffmpeg.org/roundup/ffmpeg/issue798 issue798] [https://roundup.mplayerhq.hu/roundup/ffmpeg/issue579 issue579] to start --[[User:AConverse\|AConverse]] 23:59, 19 March 2009 (EDT)
	:::::AFAIU, you forgot to commit one patch and didn't ping the other (yes, this is always necessary for Mans' code).--[[User:Ce\|Ce]] 04:54, 20 March 2009 (EDT)		:::::AFAIU, you forgot to commit one patch and didn't ping the other (yes, this is always necessary for Mans' code).--[[User:Ce\|Ce]] 04:54, 20 March 2009 (EDT)
	::::::Theora stack corruption was applied I just must have forgotten the post commit message. Broken continuation was rejected. And from the Thusnelda bug we are still missing 4:2:2.		::::::Theora stack corruption was applied I just must have forgotten the post commit message. Broken continuation was rejected. And from the Thusnelda bug we are still missing 4:2:2. --[[User:AConverse\|AConverse]] 12:50, 20 March 2009 (EDT)

	=== DTS-HD Master Audio decoder? ===		=== DTS-HD Master Audio decoder? ===

← Older revision		Revision as of 11:13, 23 March 2009
Line 34:		Line 34:
	:::::AFAIU, you forgot to commit one patch and didn't ping the other (yes, this is always necessary for Mans' code).--[[User:Ce\|Ce]] 04:54, 20 March 2009 (EDT)		:::::AFAIU, you forgot to commit one patch and didn't ping the other (yes, this is always necessary for Mans' code).--[[User:Ce\|Ce]] 04:54, 20 March 2009 (EDT)
	::::::Theora stack corruption was applied I just must have forgotten the post commit message. Broken continuation was rejected. And from the Thusnelda bug we are still missing 4:2:2. --[[User:AConverse\|AConverse]] 12:50, 20 March 2009 (EDT)		::::::Theora stack corruption was applied I just must have forgotten the post commit message. Broken continuation was rejected. And from the Thusnelda bug we are still missing 4:2:2. --[[User:AConverse\|AConverse]] 12:50, 20 March 2009 (EDT)
			::: I think there are precise quality requirements for decoder: They have to produce bitexact output. So I dont see a problem with having our own Speex decoder. --[[User:DonDiego\|DonDiego]] 14:13, 23 March 2009 (EDT)

	=== DTS-HD Master Audio decoder? ===		=== DTS-HD Master Audio decoder? ===
Line 205:		Line 206:
	I think all 2008 GSoC projects are still being actively worked upon. kostya, atrange, sascha, mind if I remove them from this page?--[[User:Angustia\|Angustia]] 17:13, 20 March 2009 (EDT)		I think all 2008 GSoC projects are still being actively worked upon. kostya, atrange, sascha, mind if I remove them from this page?--[[User:Angustia\|Angustia]] 17:13, 20 March 2009 (EDT)
	:I strongly support this idea!--[[User:Ce\|Ce]] 05:28, 21 March 2009 (EDT)		:I strongly support this idea!--[[User:Ce\|Ce]] 05:28, 21 March 2009 (EDT)
			:I'm against it. Whatever is unfinished should be up for grabs. --[[User:DonDiego\|DonDiego]] 14:13, 23 March 2009 (EDT)