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 > Capturing and Editing Video > New and alternative a/v containers

Reply
 
Thread Tools Search this Thread Display Modes
Old 1st August 2020, 15:37   #24021  |  Link
Brazil2
Registered User
 
Join Date: Jul 2008
Posts: 485
Quote:
Originally Posted by nevcairiel View Post
LAV Filters 0.74.1 (released 2019/03/19)
What about a new release ?
Brazil2 is offline   Reply With Quote
Old 1st August 2020, 19:35   #24022  |  Link
el Filou
Registered User
 
el Filou's Avatar
 
Join Date: Oct 2016
Posts: 638
Quote:
Originally Posted by VictorLS View Post
Do you know any can play 4K 4:2:2 h265 50fps [file] ?
Btw I don't 100% sure i.e. AzBox (I don't say about other even expensive but ordinary tuners) can 4:2:2 h264 (not h265) 1920x1080i50
I don't know about Sat as I'm using cable, but I don't understand why TV providers would use certain unusual codec profiles if hardly anybody would be able to receive them?
__________________
HTPC: Windows 10 1909, MediaPortal 1, LAV Filters, ReClock, madVR. DVB-C TV, Panasonic GT60, 6.0 speakers Denon 2310, Core 2 Duo E7400, GeForce 1050 Ti
el Filou is offline   Reply With Quote
Old 1st August 2020, 22:55   #24023  |  Link
VictorLS
Registered User
 
Join Date: Mar 2009
Location: Russian Crimea
Posts: 236
Quote:
Originally Posted by el Filou View Post
I'm using cable
So you receive and watch DVB-C - I'm DVB-S2(X).
Quote:
Originally Posted by el Filou View Post
I don't understand why TV providers would use certain unusual codec profiles if hardly anybody would be able to receive them?
On my own SAT transmitting providers use 4:2:2 (now more seldom than before) to achieve more quality picture after logos, tickers and so on and recoding to 4:2:0 for the end users like you but in most cases (except color issue need to use software deinterlacing) it isn't problem for LAV Video Decoder
VictorLS is offline   Reply With Quote
Old 3rd August 2020, 08:06   #24024  |  Link
ryrynz
Registered User
 
ryrynz's Avatar
 
Join Date: Mar 2009
Posts: 3,345
Quote:
Originally Posted by Brazil2 View Post
What about a new release ?
He'll probably do one after the next round of updates, might have one or two things he wants to tick off for the next version.
ryrynz is offline   Reply With Quote
Old 11th August 2020, 04:06   #24025  |  Link
Rusty100
Registered User
 
Join Date: Dec 2008
Posts: 4
Question regarding LAV Splitter's queue. Would any problems arise if I were to set the Maximum Queue Memory to, say, almost as much ram as I have?
I just got a new hard drive, and it's the loudest thing ever when at low read/write speeds, say the normal 8-14mbs while playing a film. My idea to solve this is to basically have it queue up as much as possible as it's playing, which forces the drive into ~250mbs speeds, which lo and behold, produces no hard drive noise at all.
And if I do do this, do I increase the queue packets too? And to what? I guess my main question is, am I damaging my hard drive or my ram? Haha. Or maybe if there's a better way to get higher read speeds during film playback.

Last edited by Rusty100; 11th August 2020 at 04:20.
Rusty100 is offline   Reply With Quote
Old 11th August 2020, 06:50   #24026  |  Link
sneaker_ger
Registered User
 
Join Date: Dec 2002
Posts: 5,555
To quote the author:
Quote:
Originally Posted by nevcairiel View Post
[...]it successfully buffers a full BD file at 20GB for me now.
One thing to note however is that the buffer is not "smart", if you seek it'll drop the entire buffer, do the seek in the actual file, and then re-fill the buffer from scratch. Due to that behavior, seeking is actually really slow, since freeing tens of thousands of small memory blocks is actually quite an intensive task to do. Hence why the default buffer sizes are only as big as I dare make them, since it can slow stuff down.
And yes: as I understand you have to increase both queue values.
sneaker_ger is offline   Reply With Quote
Old 12th August 2020, 00:02   #24027  |  Link
tebasuna51
Moderator
 
tebasuna51's Avatar
 
Join Date: Feb 2005
Location: Spain
Posts: 5,966
Posts deleted by Rule 6:

6) No warez, cracks, serials or illegally obtained copyrighted content! Links to content of a questionable nature (e.g. anything you don't own and/or have downloaded), asking for, offering, or asking for help/helping to process such content in any way or form is not tolerated.
__________________
BeHappy, AviSynth audio transcoder.
tebasuna51 is offline   Reply With Quote
Old 12th August 2020, 13:56   #24028  |  Link
Fabulist
Registered User
 
Join Date: Oct 2015
Posts: 29
Quote:
Originally Posted by tebasuna51 View Post
Posts deleted by Rule 6:

6) No warez, cracks, serials or illegally obtained copyrighted content! Links to content of a questionable nature (e.g. anything you don't own and/or have downloaded), asking for, offering, or asking for help/helping to process such content in any way or form is not tolerated.
There was no warez mentioned on my posts, but rather from other members, but OK. May I ask why was nevcairiel's response also deleted, which clarified how LAV Audio works in comparison to other programs?

That clarification the developer wrote can stand on its own without any context, it could help someone who has the same issues in the future.
Fabulist is offline   Reply With Quote
Old 12th August 2020, 17:16   #24029  |  Link
videoh
Useful n00b
 
Join Date: Jul 2014
Posts: 1,454
Fruit of the forbidden tree.
videoh is offline   Reply With Quote
Old 13th August 2020, 11:01   #24030  |  Link
richardpl
Registered User
 
Join Date: Jan 2012
Posts: 142
Use some other help site instead.
richardpl is offline   Reply With Quote
Old 13th August 2020, 11:41   #24031  |  Link
NikosD
Registered User
 
Join Date: Aug 2010
Location: Athens, Greece
Posts: 2,828
Quote:
Originally Posted by videoh View Post
Fruit of the forbidden tree.
You are one of a kind, but too strict.

All rules are made to be broken, sometimes.
__________________
Win 10 x64 (19041.450) - Core i3-4170 - Radeon RX 470 (20.8.1)
HEVC decoding benchmarks
H.264 DXVA Benchmarks for all
NikosD is offline   Reply With Quote
Old 15th August 2020, 05:59   #24032  |  Link
Rusty100
Registered User
 
Join Date: Dec 2008
Posts: 4
Quote:
Originally Posted by sneaker_ger View Post
To quote the author:


And yes: as I understand you have to increase both queue values.
Oh great. That's good info, thank you! Setting the queue to around 10gb of my available 16, seeking is still quite fast thankfully. For some reason, after the high speeds die down as I hit the maximum allowance, the noise doesn't return during playback. Like forcing it into prolonged high speeds to begin with negates eventual low-speed noise. Go figure. I can't believe hard drives are still like this sometimes. I hate seagate.
Rusty100 is offline   Reply With Quote
Old 16th August 2020, 19:05   #24033  |  Link
LigH
German doom9/Gleitz SuMo
 
LigH's Avatar
 
Join Date: Oct 2001
Location: Germany, rural Altmark
Posts: 6,204
I just noticed that some hardware decoders (in my case, Nvidia PureVideo on GTX 1660 Super) may fail decoding AVC with 8 bpc in high resolutions (4K UHD and beyond). Using DXVA2 native or CUVID, I noticed heavy distortions (motion vector related, I guess?) which did not appear without hardware accelerated decoding (avcodec mode). Decoding AVC with 10 bpc or HEVC was fine.

Anyone interested in details? Any suggestions how to possibly configure LAV Filters to fall back automatically in this case?
__________________

New German Gleitz board
MediaFire: x264 | x265 | VPx | AOM | Xvid
LigH is offline   Reply With Quote
Old 16th August 2020, 19:48   #24034  |  Link
NikosD
Registered User
 
Join Date: Aug 2010
Location: Athens, Greece
Posts: 2,828
Quote:
Originally Posted by LigH View Post
Anyone interested in details?
A sample of the mentioned 4K H.264 8bit clip would help.
I could test it.
__________________
Win 10 x64 (19041.450) - Core i3-4170 - Radeon RX 470 (20.8.1)
HEVC decoding benchmarks
H.264 DXVA Benchmarks for all
NikosD is offline   Reply With Quote
Old 16th August 2020, 19:51   #24035  |  Link
NikosD
Registered User
 
Join Date: Aug 2010
Location: Athens, Greece
Posts: 2,828
Quote:
Originally Posted by LigH View Post
... may fail decoding AVC with 8 bpc in high resolutions (4K UHD and beyond)
Actually, there is no beyond for H.264 HW accelerated decoding.
All HW decoders of three (AMD, Intel, nVidia) stop at 4K regarding H.264 decoding.
__________________
Win 10 x64 (19041.450) - Core i3-4170 - Radeon RX 470 (20.8.1)
HEVC decoding benchmarks
H.264 DXVA Benchmarks for all
NikosD is offline   Reply With Quote
Old 17th August 2020, 07:28   #24036  |  Link
LigH
German doom9/Gleitz SuMo
 
LigH's Avatar
 
Join Date: Oct 2001
Location: Germany, rural Altmark
Posts: 6,204
Nightsky_2160p.mp4 - watch the bottom left third at around 2 seconds for the most obvious glitches, there are a few more at the bottom.

It happens as well on a GTX 1050 Ti.
__________________

New German Gleitz board
MediaFire: x264 | x265 | VPx | AOM | Xvid
LigH is offline   Reply With Quote
Old 17th August 2020, 08:25   #24037  |  Link
nevcairiel
Registered Developer
 
Join Date: Mar 2010
Location: Hamburg/Germany
Posts: 9,995
Strictly speaking hardware decoders are (typically) limited to Level 5.1 or 5.2, your file is Level 6.0, so it might as well exceed the supported rates of the decoder. What part of it does actually exceed anything, I can't say without a much deeper investigation.
I suppose maybe I should limit the level to 5.1 (or 5.2). I have historically not added many level checks because the levels are often wrong - at least on the lower end, but I guess anyone encoding something at level 6.0 or higher will know what they are doing.

My first best guess is that the size of the DPB is being exceeded as Level 5.1/5.2 do not allow 8 ref frames for 4K, and level 6 allows up to 16. If you wanted to confirm, you could re-encode with at most 5 ref frames to stay within the limits of level 5.2 (or directly enforce level 5.2 limits, if possible)

The resolution alone wouldn't cause this, as we've been decoding 4K H264 content for years now, so the above assumption with the DPB seems most likely.
__________________
LAV Filters - open source ffmpeg based media splitter and decoders

Last edited by nevcairiel; 17th August 2020 at 11:30.
nevcairiel is offline   Reply With Quote
Old 17th August 2020, 11:54   #24038  |  Link
NikosD
Registered User
 
Join Date: Aug 2010
Location: Athens, Greece
Posts: 2,828
I'll take a look at the sample when I return home, but since you have already tried Pascal and Turing decoders, I'll try Polaris and Haswell H.264 HW decoders.

The truth is that 8K H.264 is not commercial and H.264 HW decoders have left behind supporting only 4K, although x264 and other encoders can encode H.264 at 8K resolution.

As nevcairiel said, probably someone could encode 4K H.264 at higher level than L5.x which was the highest level at the 4K H.264 era of HW decoders and is mainly used for 4K encoding.

Haswell's and probably onwards Intel's HW H.264 is the fastest (even from Turing) and I have already tested 4K H.264 L5.2 Ref 16 with huge bandwidth (1Gbps) and with success.

However, I haven't tried before 4K H.264 at L6.x using any HW decoder.

Interesting.
__________________
Win 10 x64 (19041.450) - Core i3-4170 - Radeon RX 470 (20.8.1)
HEVC decoding benchmarks
H.264 DXVA Benchmarks for all
NikosD is offline   Reply With Quote
Old 17th August 2020, 12:32   #24039  |  Link
LigH
German doom9/Gleitz SuMo
 
LigH's Avatar
 
Join Date: Oct 2001
Location: Germany, rural Altmark
Posts: 6,204
The slow and very predictable motion of stars in a nightsky timelapse seems to benefit from long range references. Not much surprising. I guess a very verbose log could reveal interesting details.

I limited the references to 5 (and accordingly the level to 5.1); as expected, no glitches spotted in DXVA2 HW mode.
__________________

New German Gleitz board
MediaFire: x264 | x265 | VPx | AOM | Xvid
LigH is offline   Reply With Quote
Old 17th August 2020, 20:14   #24040  |  Link
NikosD
Registered User
 
Join Date: Aug 2010
Location: Athens, Greece
Posts: 2,828
I tried all HW modes of Intel iGPU (QuickSync, DXVA2 CB, DXVA2 Native, D3D11) and AMD RX 470 (DXVA2 CB, DXVA2 native and D3D11) that LAV Video (latest nightly) provides with EVR-CP and MPC-VR renderers.

Both HW decoders appear to have exactly the same issue with image distortion, as you mentioned using Pascal and Turing.

The only interesting point I want to report is QuickSync that falls back automatically to SW decoding.

I don't know if LAV or Intel's MediaSDK are responsible for this behavior, but it seems that it is what you asked for.
__________________
Win 10 x64 (19041.450) - Core i3-4170 - Radeon RX 470 (20.8.1)
HEVC decoding benchmarks
H.264 DXVA Benchmarks for all
NikosD is offline   Reply With Quote
Reply

Tags
decoders, directshow, filters, splitter

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 21:43.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, vBulletin Solutions Inc.