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 > High Efficiency Video Coding (HEVC)

Reply
 
Thread Tools Search this Thread Display Modes
Old 21st November 2021, 18:12   #101  |  Link
Atak_Snajpera
RipBot264 author
 
Atak_Snajpera's Avatar
 
Join Date: May 2006
Location: Poland
Posts: 7,624
Quote:
Originally Posted by Loomes View Post
Sounds interesting. Could you please give a bit more information / sources about chunk encoding? I get the idea but how to approach this technically?
It works like this


You basically divide your video clip virtually in avisynth script with Trim function and then encode all chunks at once. Then you combine all .265 files into one and mux. With this approach i can easily saturate even Threadripper 64C/128T using just 720p source.

Last edited by Atak_Snajpera; 21st November 2021 at 18:16.
Atak_Snajpera is offline   Reply With Quote
Old 21st November 2021, 21:41   #102  |  Link
kolak
Registered User
 
Join Date: Nov 2004
Location: Poland
Posts: 2,582
There are problems with it as well: VBV buffer flow, VBR efficiency with very short chunks, but in most cases it works fine. You also should use stitching option in encoders and make sure headers are set correctly, specially for the last chunk.
SPS/PPS should also be set properly (for ts muxing) as some hardware boxes don't like if those change during one video.
You should also put some attention where you place chunk points, eg. best are scene changes. In case of streaming need of fixed I frame distance chunks points should be rather aligned to them.
For perfect streams it's not as easy as simple divide to n parts and encode them simultaneously, but it can be done. It all depends what is the end target.

Last edited by kolak; 21st November 2021 at 21:49.
kolak is offline   Reply With Quote
Old 24th November 2021, 17:35   #103  |  Link
sebastian1
Registered User
 
Join Date: Nov 2021
Posts: 1
5900X@PBO/+50Mhz/142W
Quote:
||---------------------|---------|---------|---------|---------|---------|---------|---------|---------|---------|---------|---------|---------|
| CPU ....................| x264 | x265 | LAVC | auto | MMX2 | SSE | SSE2 | SSE3 | SSE4 | AVX | AVX2 | All |
|----------------------|---------|---------|---------|---------|---------|---------|---------|---------|---------|---------|---------|---------|
| Ryzen 9 5900X......| 48.29 | 8.88 | 224 | 6.94 | 2.39 | 2.40 | 3.67 | 3.93 | 5.66 | 5.72 | 6.86 | N/A |
sebastian1 is offline   Reply With Quote
Old 26th November 2021, 19:28   #104  |  Link
tormento
Acid fr0g
 
tormento's Avatar
 
Join Date: May 2002
Location: Italy
Posts: 1,935
Yet nobody with Alder Lake?
__________________
@turment on Telegram
tormento is offline   Reply With Quote
Old 26th November 2021, 21:33   #105  |  Link
RanmaCanada
Registered User
 
Join Date: May 2009
Posts: 239
Quote:
Originally Posted by tormento View Post
Yet nobody with Alder Lake?
We would honestly need to get the benchmark updated for anything in Alder Lake to be relevant.
RanmaCanada 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 02:33.


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