From snd.noise at gmail.com  Mon Aug  3 22:07:26 2020
From: snd.noise at gmail.com (farid abdelnour)
Date: Mon, 3 Aug 2020 18:07:26 -0300
Subject: Kdenlive 20.08 RC
Message-ID: <CAHMxv346YWOJGf4-0USM2hiV-WdsYJvd-MEh87mTJa0W48F=TQ@mail.gmail.com>

Greetings folks,

Please help test the upcoming 20.08 release. This cycle was focused mostly
on stability and improvements. Expect less crashes (none from my tests) as
well as many usability and interface improvements and a ton of bug fixes.
Among the highlights are multiple audio streams support, zoombars in clip
monitor, new layout management ui and predefined layouts and performance
improvements in jpg image sequence playback to name a few...

WARNING: This version has a new project type that is not backwards
compatible... so you won't be able to use older versions to open new files.

You can download the Release Candidate appimage from here:
https://files.kde.org/kdenlive/unstable/kdenlive-20.08.0-RC-x86_64.appimage

Cheers

-- 
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fsf member #5439
usuario GNU/Linux #471966
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<a href="http://www.atelier-labs.org">atelier-labs</a>
<a href="http://www.mocambos.net">rede mocambos</a>
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From paulsrsmith at live.co.uk  Wed Aug 12 15:50:27 2020
From: paulsrsmith at live.co.uk (Paul Smith)
Date: Wed, 12 Aug 2020 14:50:27 +0000
Subject: GPU Rendering
Message-ID: <em1b26c6af-0b5e-4f83-86ef-a826b8a288a9@elizabeth>

Hi,

I really like KdenLive. Seems pretty intuitive to use. The on;y thing I couldn't quite figure out going through the settings is, does it use the Nvidia GPU for rendering? If not is that something on the horizon? If so I'm happy to donate towards it's development.

Kind Regards

Paul
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From evorster at gmail.com  Wed Aug 12 16:06:57 2020
From: evorster at gmail.com (Evert Vorster)
Date: Wed, 12 Aug 2020 17:06:57 +0200
Subject: GPU Rendering
In-Reply-To: <em1b26c6af-0b5e-4f83-86ef-a826b8a288a9@elizabeth>
References: <em1b26c6af-0b5e-4f83-86ef-a826b8a288a9@elizabeth>
Message-ID: <CAER78vThR-202bu8c8uSoC4xtEd9Qwvd6YBajEC9-Ba0gO1VDg@mail.gmail.com>

Hey Paul.

There are ways to use GPU rendering in the output. However you typically
exchange quality for speed & size.



ie: rendering out at q=26 on software looks better than rendering out at
q=26 on hardware.

This is because the software encoders are more mature and can use features
in the CPU that the GPU cannot.

Here is a profile that I was using to test nvenc:

properties=x264-medium f=mp4 vcodec=h264_nvenc acodec=aac g=120
crf=%quality ab=%audiobitrate+'k'


Kind regards,
Evert Vorster
Awesome Chapters Tours
http://www.awesomechapters.com
Tel: +264 (0) 811477690


On Wed, 12 Aug 2020 at 17:01, Paul Smith <paulsrsmith at live.co.uk> wrote:

> Hi,
>
> I really like KdenLive. Seems pretty intuitive to use. The on;y thing I
> couldn't quite figure out going through the settings is, does it use the
> Nvidia GPU for rendering? If not is that something on the horizon? If so
> I'm happy to donate towards it's development.
>
> Kind Regards
>
> Paul
>
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From dan at dennedy.org  Thu Aug 13 04:42:13 2020
From: dan at dennedy.org (Dan Dennedy)
Date: Wed, 12 Aug 2020 20:42:13 -0700
Subject: GPU Rendering
In-Reply-To: <CAER78vThR-202bu8c8uSoC4xtEd9Qwvd6YBajEC9-Ba0gO1VDg@mail.gmail.com>
References: <em1b26c6af-0b5e-4f83-86ef-a826b8a288a9@elizabeth>
 <CAER78vThR-202bu8c8uSoC4xtEd9Qwvd6YBajEC9-Ba0gO1VDg@mail.gmail.com>
Message-ID: <CABBVo1=Fv0MGihc6gCh6_Kzs=UpDcg0=TBrcBrOZYPJxUs_O1w@mail.gmail.com>

On Wed, Aug 12, 2020 at 8:07 AM Evert Vorster <evorster at gmail.com> wrote:

> Hey Paul.
>
> There are ways to use GPU rendering in the output. However you typically
> exchange quality for speed & size.
>
>
>
> ie: rendering out at q=26 on software looks better than rendering out at
> q=26 on hardware.
>
> This is because the software encoders are more mature and can use features
> in the CPU that the GPU cannot.
>
>
This is not necessarily always true as of the 6th generation Turing NVENC.
It is generally considered now as good as x264 and x265 at medium preset:
https://developer.nvidia.com/blog/turing-h264-video-encoding-speed-and-quality/
https://unrealaussies.com/tech/nvenc-x264-quicksync-qsv-vp9-av1/7/#NVENC-Part-2
(you can find more studies)

Turing cards are RTX 20xx and GTX 1650 Super:
https://en.wikipedia.org/wiki/Nvidia_NVENC#Sixth_generation,_Turing_TU10x/TU116

If you want to use HEVC to limit size while maximizing quality, Turing
NVENC HEVC makes a lot of sense since it is so much faster than x265 or
vp9. If you are going to output H.264 I think it is less compelling
considering the speed of x264.


Here is a profile that I was using to test nvenc:
>
> properties=x264-medium f=mp4 vcodec=h264_nvenc acodec=aac g=120
> crf=%quality ab=%audiobitrate+'k'
>
>
> Kind regards,
> Evert Vorster
> Awesome Chapters Tours
> http://www.awesomechapters.com
> Tel: +264 (0) 811477690
>
>
> On Wed, 12 Aug 2020 at 17:01, Paul Smith <paulsrsmith at live.co.uk> wrote:
>
>> Hi,
>>
>> I really like KdenLive. Seems pretty intuitive to use. The on;y thing I
>> couldn't quite figure out going through the settings is, does it use the
>> Nvidia GPU for rendering? If not is that something on the horizon? If so
>> I'm happy to donate towards it's development.
>>
>> Kind Regards
>>
>> Paul
>>
>
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From evorster at gmail.com  Thu Aug 13 06:27:51 2020
From: evorster at gmail.com (Evert Vorster)
Date: Thu, 13 Aug 2020 07:27:51 +0200
Subject: GPU Rendering
In-Reply-To: <CABBVo1=Fv0MGihc6gCh6_Kzs=UpDcg0=TBrcBrOZYPJxUs_O1w@mail.gmail.com>
References: <em1b26c6af-0b5e-4f83-86ef-a826b8a288a9@elizabeth>
 <CAER78vThR-202bu8c8uSoC4xtEd9Qwvd6YBajEC9-Ba0gO1VDg@mail.gmail.com>
 <CABBVo1=Fv0MGihc6gCh6_Kzs=UpDcg0=TBrcBrOZYPJxUs_O1w@mail.gmail.com>
Message-ID: <CAER78vQ0WF1GwQZLVC2oT1bAhF2CX1ef0O4USyKPNKkx36bu_w@mail.gmail.com>

Thanks for the update, Dan.

It's been a while since I hardware encoded video, and my card is pre-turing.

Evert Vorster
Awesome Chapters Tours
http://www.awesomechapters.com
Tel: +264 (0) 811477690


On Thu, 13 Aug 2020 at 05:42, Dan Dennedy <dan at dennedy.org> wrote:

> On Wed, Aug 12, 2020 at 8:07 AM Evert Vorster <evorster at gmail.com> wrote:
>
>> Hey Paul.
>>
>> There are ways to use GPU rendering in the output. However you typically
>> exchange quality for speed & size.
>>
>>
>>
>> ie: rendering out at q=26 on software looks better than rendering out at
>> q=26 on hardware.
>>
>> This is because the software encoders are more mature and can use
>> features in the CPU that the GPU cannot.
>>
>>
> This is not necessarily always true as of the 6th generation Turing NVENC.
> It is generally considered now as good as x264 and x265 at medium preset:
>
> https://developer.nvidia.com/blog/turing-h264-video-encoding-speed-and-quality/
>
> https://unrealaussies.com/tech/nvenc-x264-quicksync-qsv-vp9-av1/7/#NVENC-Part-2
> (you can find more studies)
>
> Turing cards are RTX 20xx and GTX 1650 Super:
>
> https://en.wikipedia.org/wiki/Nvidia_NVENC#Sixth_generation,_Turing_TU10x/TU116
>
> If you want to use HEVC to limit size while maximizing quality, Turing
> NVENC HEVC makes a lot of sense since it is so much faster than x265 or
> vp9. If you are going to output H.264 I think it is less compelling
> considering the speed of x264.
>
>
> Here is a profile that I was using to test nvenc:
>>
>> properties=x264-medium f=mp4 vcodec=h264_nvenc acodec=aac g=120
>> crf=%quality ab=%audiobitrate+'k'
>>
>>
>> Kind regards,
>> Evert Vorster
>> Awesome Chapters Tours
>> http://www.awesomechapters.com
>> Tel: +264 (0) 811477690
>>
>>
>> On Wed, 12 Aug 2020 at 17:01, Paul Smith <paulsrsmith at live.co.uk> wrote:
>>
>>> Hi,
>>>
>>> I really like KdenLive. Seems pretty intuitive to use. The on;y thing I
>>> couldn't quite figure out going through the settings is, does it use the
>>> Nvidia GPU for rendering? If not is that something on the horizon? If so
>>> I'm happy to donate towards it's development.
>>>
>>> Kind Regards
>>>
>>> Paul
>>>
>>
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From conordowdall at protonmail.com  Sun Aug 30 15:41:13 2020
From: conordowdall at protonmail.com (Conor Dowdall)
Date: Sun, 30 Aug 2020 14:41:13 +0000
Subject: $KDENLIVE_RENDER_LOG
Message-ID: <3JvQ8ApgOCW0q4QNghMJ1XTsfWjMGWAnBK86cxi7w1mX8Mu6r1Tu3aYZFZupZDXCCnSX9afE4VReoao0R0QmIBXqaR4Ylbwhv3knaVNkEEI=@protonmail.com>

Hi,

I am doing a project and I would like to see the ffmpeg command that kdenlive is using to render the video. Your documentation says to set $KDENLIVE_RENDER_LOG, but I cannot figure out how to make it work. Could you clear this up for me?

Kind regards,

Conor Dowdall.
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