AV1 & H.265 HEVC broken Codecs

[Alipod]

Hello all

I'm writing this because I need you opinions . I'll try to be brief: (before you ask, yes I contacted Corel Support and while writing this post, they replied to my ticket)

1- Rendering AV1 using VS2023 looks fine but playing that file in any player is not possible. re-encode the file is impossible and freeze any app that I used.
2- Rendering H.265 (HEVC) works fine but the video file is choppy as it is a(10 fps) video despite that it's 59.98 fps. re-encoding it using any other app will not fix it. Playing it in all players is the same thing except (VLC on PC).
3- Used same as Project setting and Proxy but same results as above.

Software I used to re-encode Corel rendered files:

- DaVinci Resolve 18 (free version 8-bit)
- Handbrake

Devices I have:

- TCL 65C835 with latest update, AV1 is working just fine if I render a video from (H.264) using Handbrake only.
- Xiaomi Box S 4K (2nd Gen) it support AV1 completely.
- GoPro 11 (10-bit decoding is not supported in Corel as you know) so I used 8-bit video.

rendering H.265 HEVC video by DaVinci Resolve is just fine and works perfectly in every device and player.


I tried to look here for a topic but didn't find anything. I don't have any crash or problem with VS2023 except the rendering of codecs I mentioned.

I bought AV1 Codec from MS Store ($0.99) also I have the free version x64. I thought that buying it will solve the problem . Glad it wasn't $1 because I would sell my house and be homeless.

Now, I render my Videos in Corel but using this method:

- H264 with high bitrate (150k) then I import it into Handbrake to re-encode it but with H.265 (between 50k - 70k bitrate).


How can you help me to fix it if there is a fix or it's just a common problem with all?

In case you want to know:

- K-lite Mega codec latest version Installed with MPC player.
- AV1 codec installed from MS Store.
- I have NVMe SSD (WD-BLACK SN850X 4th Gen)
- I used DDU to reinstall AMD Adrenalin 23.12.1 which fixed an important problem (h264 high profile wasn't working).
- Used Corel Clean up tool to reinstall VS2023


thanks in advance

[Ken Berry]

Using the AV1 codec which came as part of VS2023, I have no difficulty rendering a video to AV1 format. I even produced a 4K clip which plays smoothly in VS2023 and other programs. I have to add that it's not a format that I usually use, so I can't really help you further with that. My computer specs are contained in my Profile on the right hand side of this Board.

As for HEVC, I don't know if Resolve comes with its own version of the HEVC codec, nor whether than Resolve codec would also work in VideoStudio. Out of the box VideoStudio does not have a HEVC codec built into it. However, you can install the Microsoft HEVC extension/codec from the Microsoft store, which certainly works in VS. Do you know if you have installed that? If you are still using Windows 10 as your Profile suggests, there is even a free version of the HEVC Extension which a simple Google search should find. If you have upgraded to Windows 11, then the free version will not work and you would need to fork out something under $10 for it.

EDIT: Thinking about this some more, I see that you have the K-Lite Mega codec pack installed. I believe that this contains the H.265 codec. So that should operate with VideoStudio. But I can't account for the problems you have had with it, nor the need for your workaround using Handbrake. I have the Microsoft HEVC codec installed, and use H.265 with VS 2023 almost exclusively these days since my GoPro, Insta 360 camera and smartphone cameras are all set to use that format. I have no trouble at all using it directly, and since installing the Extension have always been happy with the quality of the result whether 4K or high def.

[Alipod]

Using the AV1 codec which came as part of VS2023, I have no difficulty rendering a video to AV1 format

and can you convert that file normally or reencode it with other softwares? because I can't. Used many apps but always a failure.

As for HEVC, I don't know if Resolve comes with its own version of the HEVC codec

it comes with its own codecs. even cyberlink powerdirector

you can install the Microsoft HEVC extension/codec from the Microsoft store

already did. paid $0.99 for it. also tried the free x64 from MS Store too which is not available anymore.

I see that you have the K-Lite Mega codec pack installed. I believe that this contains the H.265 codec

no, I had to buy h.265 from MS store to encode HEVC by VS2023. before the purchase, only h.264 an av1 available. however, VS2023 could decode h265 normally. from GoPro11.

I have the Microsoft HEVC codec installed, and use H.265 with VS 2023 almost exclusively these days since my GoPro, Insta 360 camera and smartphone cameras are all set to use that format

good to hear that. I'll share 2 videos one is H265 and the other is AV1 to see that my H265 is not 59.98fps video. it's like 20fps or less
https://drive.google.com/file/d/1bF0o5Q ... sp=sharing

AV1 that cannot be converted into any other format nor can be decoded by other softwares.

https://drive.google.com/file/d/18ieDKw ... sp=sharing

I forgot to mention that I cannot encode HEVC using hardware accelerator. doesn't start and freeze the VS2023. have to close it by task manager.

Corel Support asked me to share with them msinfo32 and a WinAudit report. I'll wait for them. but I thought it's a common problem since there is no patch of vs2023 since the release. Thank you Ken

[lata]

Hi
Ken is in NZ, a little early over there, so here my thoughts
You should use a small app to read your video properties called Media Info
https://mediaarea.net/en/MediaInfo

I see your H265 and AV1 as using 59.94fps there is no indication of a 20fps or lower.
My PC is not the fastest by far, in fact I may need to update at some time but both samples play on my pc, reasonably well. VLC media seems to cope the best.

I also used Share to render your H265 sample to H256 with no problems

Which one of these videos is the original recording as clearly one has been converted from the other?

[Alipod]

Dear Lata,

I have MediaInfo from K-Lite pack and I use it. I know you see 59.94fps but playing this video in every device makes it look as 20fps. unless I play it on my PC using VLC player only. (first link)

The one that is not possible to convert is AV1 video. (2nd link)

this video was rendered by VS2023 (h264)
https://drive.google.com/file/d/19cLppz ... sp=sharing

my TV and TV box both failed to play h265 smoothly. also failed to play AV1 rendered by VS2023. but, rendering an AV1 using Handbrake is totally fine and plays perfectly in my devices.

I really don't know if I had this problem from the date I purchased VS2023 or not because I used h264 for every video to be able to play them in an old TV. but now I want to play them in my other TV which plays every codec mentioned just to make it smaller file and cleaner. I have h264 video of 8gb, encoding it to h265 made the file 6gb. that is great for me.

thank you Lata

[Ken Berry]

Both those clips play well and smoothly in my VS 2023 and Pinnacle Studio. Resolve was interesting. The H.265 clip played perfectly. However, the AV1 clip showed the first frame in the preview screen and remained there while the rest of the clip played in the background. In other words, I got what there was of the audio (breathing) but only the first frame of video. In all cases, both clips showed (and played smoothly) at 59.94 fps.

I also wanted to try them in my Vegas 19.0 but I could not get it to open. I got the startup screens but then it just died, and didn't show any remnants in Task Manager. I will look into this of course.

[Alipod]

the AV1 clip showed the first frame in the preview screen and remained there while the rest of the clip played in the background. In other words, I got what there was of the audio (breathing) but only the first frame of video

exactly this is what is happening with me about AV1. tried everything else didn't fix it like re-encoding or using a software to fix videos or converting it using (any video converter)



for the h265 it weird that it works fine in your PC...did you download it and tried to play it in windows media player? VLC works fine. TV or anything else it's stuttering

[Ken Berry]

I rarely use Windows Media Player in Windows 11. It is shown in the Windows Tools folder as being "Legacy". However, I just opened it. It played the AV1 clip smoothly and at the correct frame rate. The H.265 clip played, but there was minor jerkiness throughout. Sometimes when I replay such a clip, the jerkiness disappears, but not in this case. Both clips play fine in VLC.

The really curious thing is that I then went to my H.265 folder and played several of the clips stored there in Windows Media Player, and all played properly and smoothly, including 4K ones. So I am at a loss to know why your clip plays erratically in WMP.

As I said above, the AV1 clip plays fine in VS and Pinnacle Studio. It was Resolve which had difficulties with the AV1, which surprised me. Then again, it may not have the AV1 codec or have a variant of it. Who knows?

EDIT: FWIW I have now got Vegas 19 working again. It plays the H.265 clip smoothly with not even a hint of jerkiness. However, it cannot "see" the AV1 clip and will not allow me to drag it to the timeline.

[Alipod]

Dear Ken,

try to compare the h265 against h264

I shared links in previous replies. h265 is stuttering not smooth in every device I have even in my brother computer. so it's not my PC

about the AV1, this is confirmed now. something wrong about it. I'm not sure if it's the k-lite codecs or not. I uninstalled them...same result. I turned off my anti-virus...same

[Ken Berry]

Believe me, I know about H.265. As I have already said, I use it these days almost exclusively as my format of choice, both in high def (1920 x 1080) and 4K versions. I would hardly be doing that if I was getting stuttering video. I don't. And apart from the cases I mentioned above, your H.265 sample plays quite smoothly and well, and is high quality. That is what I would expect of it.

The other thing you have to accept about H.265, though, is that it is quite demanding of computer resources. You have to have a good computer. I know your computer is pretty good. But have you ever used SmartProxy with it? That has been a feature of VideoStudio for quite a few versions now. Where you worry about your computer's resources not being sufficient to edit some sorts of video like H.265, you use SmartProxy. This creates a low definiton copy ("proxy") of your original video. That will be easy to edit and playback smoothly and quickly. Just make sure you give this time to create the proxies.

And when you think it is ready, the edits will be applied back to the H.265 original video. Hopefully that will then play in VLC, MPC or even WMP without stuttering, and should also play back on your TV smoothly and with high quality. You could do a test with a short piece of H.265, create a proxy for it, do some basic editing, then apply the edits back to the original, to see whether this is any improvement on what you have got now.

[Alipod]

I could fix the playback of the H.265 rendered by VS2023 by playing the video in my TV using MX Player (HW+ accelerator within MX player) and what is making me frustrated is only VS2023 rendered H265 video needs this. DaVinci works just fine and no need for any special video player to fix the stuttering.

For the AV1, there is nothing worked and I have no idea if the problem only files rendered by my PC or the VS2023 itself.

I'll wait for Corel support reply by email.

Thank you Ken. I appreciate your effort.

[Ken Berry]

Did you try SmartProxy?

[Alipod]

Yes I use proxy all the time