Welcome to Doom9's Forum, THE in-place to be for everyone interested in DVD conversion.

Before you start posting please read the forum rules. By posting to this forum you agree to abide by the rules.

 

Go Back   Doom9's Forum > Video Encoding > MPEG-4 AVC / H.264

Reply
 
Thread Tools Search this Thread Display Modes
Old 7th January 2021, 07:25   #1  |  Link
Blue_MiSfit
Derek Prestegard IRL
 
Blue_MiSfit's Avatar
 
Join Date: Nov 2003
Location: Los Angeles
Posts: 5,803
Archival of Dark_Shikari's blog?

Anyone have a link to an archived copy of our old friend Dark_Shikari's blog "Diary of an x264 developer"? It was super insightful and I'd like to refer back to some older posts but the site is down and I can't find it on the wayback machine.
Blue_MiSfit is offline   Reply With Quote
Old 7th January 2021, 10:07   #2  |  Link
sneaker_ger
Registered User
 
Join Date: Dec 2002
Posts: 5,570
https://web.archive.org/web/20150416...multimedia.cx/
?
sneaker_ger is offline   Reply With Quote
Old 7th January 2021, 19:44   #3  |  Link
Blue_MiSfit
Derek Prestegard IRL
 
Blue_MiSfit's Avatar
 
Join Date: Nov 2003
Location: Los Angeles
Posts: 5,803
Thank you! No idea why it didn't work for me the other day.
Blue_MiSfit is offline   Reply With Quote
Old 7th January 2021, 21:38   #4  |  Link
Blue_MiSfit
Derek Prestegard IRL
 
Blue_MiSfit's Avatar
 
Join Date: Nov 2003
Location: Los Angeles
Posts: 5,803
This was _SUCH_ a good post on encoder latency.

https://web.archive.org/web/20120829...x/archives/249
Blue_MiSfit is offline   Reply With Quote
Old 7th January 2021, 23:20   #5  |  Link
benwaggoner
Moderator
 
Join Date: Jan 2006
Location: Portland, OR
Posts: 3,541
Lots of great posts in there. Probably some of the best educational material on real-world encoder design and implementation out there.
__________________
Ben Waggoner
Principal Video Specialist, Amazon Prime Video

My Compression Book
benwaggoner is offline   Reply With Quote
Old 8th January 2021, 05:21   #6  |  Link
Blue_MiSfit
Derek Prestegard IRL
 
Blue_MiSfit's Avatar
 
Join Date: Nov 2003
Location: Los Angeles
Posts: 5,803
Another great one, this time about VP8

https://web.archive.org/web/20120801...x/archives/486

Quote:
6. Not supporting interlacing.

THANK YOU THANK YOU THANK YOU THANK YOU THANK YOU THANK YOU THANK YOU.

Interlacing was the scourge of H.264. It weaseled its way into every nook and cranny of the spec, making every decoder a thousand lines longer. H.264 even included a highly complicated — and effective — dedicated interlaced coding scheme, MBAFF. The mere existence of MBAFF, despite its usefulness for broadcasters and others still stuck in the analog age with their 1080i, 576i , and 480i content, was a blight upon the video format.

VP8 has once and for all avoided it.

And if anyone suggests adding interlaced support to the experimental VP8 branch, find a straightjacket and padded cell for them before they cause any real damage.


Here we are today with kludgy interlacing support in HEVC
Blue_MiSfit is offline   Reply With Quote
Old 8th January 2021, 06:31   #7  |  Link
manolito
Registered User
 
manolito's Avatar
 
Join Date: Sep 2003
Location: Berlin, Germany
Posts: 2,961
Sorry I don't remember which one of you encoding gurus posted this:
Foolproof VFR to CFR conversion
Quote:
If no frame rate is available, or even if one is but it's nonstandard, I'd just open with DSS's convertfps=true with exactly double whatever the final framerate of the DVD is, weave the fields, and encode interlaced. That handles all VFR as optimally as possible without either blending or mo-comp.

More advanced analysis could reveal where progressive with soft pulldown is possible, but you have to parse the timecodes for that and pass the ranges on. Encoding interlaced just works.
So is it Encoding interlaced just works, or should should it be avoided by all means?

//EDIT//
It was foxyshadis who posted this...

Last edited by manolito; 8th January 2021 at 07:57.
manolito is offline   Reply With Quote
Old 9th January 2021, 09:29   #8  |  Link
FranceBB
Broadcast Encoder
 
FranceBB's Avatar
 
Join Date: Nov 2013
Location: Germany
Posts: 1,290
Quote:
Originally Posted by benwaggoner View Post
Lots of great posts in there. Probably some of the best educational material on real-world encoder design and implementation out there.
Indeed! Most of the stuff that Dark was talking about 11 years ago are still very relevant today and offer a very important insight on how things work and why they were implemented the way they have been.
FranceBB is offline   Reply With Quote
Old 11th January 2021, 21:36   #9  |  Link
benwaggoner
Moderator
 
Join Date: Jan 2006
Location: Portland, OR
Posts: 3,541
Quote:
Originally Posted by Blue_MiSfit View Post
Here we are today with kludgy interlacing support in HEVC
Victory!

The thing that kills me is that we almost got interlaced kicked out of ATSC 1.0 and could have been rid of it a couple of decades earlier. Intel had convinced everyone that doing SW deinterlacing was too hard for PC clients. The broadcasters were about to give up when Intel said "no, we figured it out." If they'd just shut up for another month...
__________________
Ben Waggoner
Principal Video Specialist, Amazon Prime Video

My Compression Book
benwaggoner is offline   Reply With Quote
Old 19th January 2021, 17:50   #10  |  Link
cogman
The Crazy Idahoan
 
Join Date: Jun 2007
Location: Idaho
Posts: 240
What ever happened to Dark_Shikari?
cogman is offline   Reply With Quote
Old 19th January 2021, 18:22   #11  |  Link
Andouille
Registered sausage
 
Andouille's Avatar
 
Join Date: May 2012
Posts: 76
Quote:
Originally Posted by cogman View Post
What ever happened to Dark_Shikari?
I think she works now out of the spotlights at a computer company with a fixed monthly income which is obviously welcome for anybody.
We don't either hear a lot about pengvado or other video compression legends.
Andouille is offline   Reply With Quote
Old 19th January 2021, 21:42   #12  |  Link
Blue_MiSfit
Derek Prestegard IRL
 
Blue_MiSfit's Avatar
 
Join Date: Nov 2003
Location: Los Angeles
Posts: 5,803
Indeed If y'all ever read this, we miss you both!
Blue_MiSfit is offline   Reply With Quote
Old 20th January 2021, 16:55   #13  |  Link
jpsdr
Registered User
 
Join Date: Oct 2002
Location: France
Posts: 1,871
Unless he changed sex, as far as i remember, Dark Shiraki is a "he".
__________________
My github.

Last edited by jpsdr; 20th January 2021 at 16:57.
jpsdr is offline   Reply With Quote
Old 20th January 2021, 16:58   #14  |  Link
videoh
Useful n00b
 
Join Date: Jul 2014
Posts: 1,368
He did change sex and is now Fiona.
videoh is offline   Reply With Quote
Old 20th January 2021, 17:01   #15  |  Link
jpsdr
Registered User
 
Join Date: Oct 2002
Location: France
Posts: 1,871
Ah...
Ok, i didn't know, my mistake and apologies in that case, and thanks for the information.
__________________
My github.
jpsdr is offline   Reply With Quote
Old 28th January 2021, 15:29   #16  |  Link
imcold
pencil artist
 
imcold's Avatar
 
Join Date: Jan 2006
Location: Slovakia
Posts: 201
Quote:
Originally Posted by Andouille View Post
We don't either hear a lot about pengvado or other video compression legends.
Skal works on compression project(s) at Google.
__________________
fevh264 - open-source baseline h.264 encoder
imcold is offline   Reply With Quote
Old 28th January 2021, 17:03   #17  |  Link
chainring
Registered User
 
chainring's Avatar
 
Join Date: Sep 2006
Posts: 153
Quote:
Originally Posted by imcold View Post
Skal works on compression project(s) at Google.
Went by "akupenguin" or something similar?
chainring is offline   Reply With Quote
Old 28th January 2021, 17:22   #18  |  Link
imcold
pencil artist
 
imcold's Avatar
 
Join Date: Jan 2006
Location: Slovakia
Posts: 201
That was a reference to the "other video compression legends" part. Skal contributed to XviD.
__________________
fevh264 - open-source baseline h.264 encoder
imcold is offline   Reply With Quote
Old 28th January 2021, 17:45   #19  |  Link
chainring
Registered User
 
chainring's Avatar
 
Join Date: Sep 2006
Posts: 153
Quote:
Originally Posted by imcold View Post
That was a reference to the "other video compression legends" part. Skal contributed to XviD.
Oops, yeah, I'm thinking of pengvado from the post one up from yours.
chainring is offline   Reply With Quote
Old 31st January 2021, 18:53   #20  |  Link
TEB
Registered User
 
Join Date: Feb 2003
Location: Palmcoast of Norway
Posts: 351
didnt some of old timers go to ateme?
TEB is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT +1. The time now is 20:20.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, vBulletin Solutions Inc.