Simple NvEnc Transcoding Tool?

easy2Bcheesy · 4th April 2018, 11:48

Hi there,

I'm looking for simple GUI tool that will allow me to take 10-bit ProRes 4:2:2 footage captured at UHD 60Hz from an Atomos Shogun Inferno, and to transcode it into 10-bit h.264 4:2:2 using Nvidia NvEnc, at CRF 14.

The idea here is to crunch down extremely large video captures into a more manageable size that we can more easily upload and share between staff working together remotely without losing much quality, and also with minimal transcoding time.

Any thoughts? Also happy to consider other alternatives, though I've found that transcoding to HEVC makes the encoded files difficult to deal with at the other end...

Atak_Snajpera · 4th April 2018, 12:16

Why not use x264 in "fake" AVC-Intra ( --preset superfast --tune fastdecode --keyint 1 ) mode for this task?

easy2Bcheesy · 4th April 2018, 17:55

What's the simplest GUI with switch support that can do this? Not all of the team are expert encoders so I'd like to keep this as simple as possible.

poisondeathray · 4th April 2018, 19:00

nvenc does not support encoding 10bit422 AVC

Asmodian · 5th April 2018, 00:37

A collection of batch files for x264, setup so you simply drag and drop the video file on the one you want?

easy2Bcheesy · 5th April 2018, 08:19

Is that something you help with Asmodian? We do have pretty fast CPUs here - we just need a way to shrink 10-bit 4K ProRes into a format we can share online while retaining quality.

We need 10-bit in order to retain HDR data, and based on our NvEnc tests, CRF14 quality holds up even on a 200-300% zoom.

Asmodian · 6th April 2018, 21:02

Do you have a short sample I could use for testing a solution?

easy2Bcheesy · 8th April 2018, 15:29

Here's a few seconds of 10-bit HDR (metadata gets manually injected in post): https://mega.nz/#!Y6x3gD4K!nw9R8Oq0X...xdsqiFQUeRwMc0

So it's about 670MB for 330 frames of UHD 4:2:2. You can see why we need to shrink the files somewhat!

Atak_Snajpera · 9th April 2018, 14:41

Quote:

Originally Posted by easy2Bcheesy

Here's a few seconds of 10-bit HDR (metadata gets manually injected in post): https://mega.nz/#!Y6x3gD4K!nw9R8Oq0X...xdsqiFQUeRwMc0

So it's about 670MB for 330 frames of UHD 4:2:2. You can see why we need to shrink the files somewhat!

Indeed 1Gbps looks insane. Even 8C/16T is too slow for real time decoding.

easy2Bcheesy · 10th April 2018, 10:22

Quote:

Originally Posted by Atak_Snajpera

Indeed 1Gbps looks insane. Even 8C/16T is too slow for real time decoding.

It's a ProRes file - it'll playback in realtime on my dual-core Macbook Pro! But we need a way to retain quality and be able to send footage across the internet...

foxyshadis · 10th April 2018, 15:56

Handbrake is still my quick-n-easy GUI of choice for people who aren't really interested in encoding. They have "production" presets that have no b-frames, one ref, and fast search; you might want to distribute a custom profile with CRF 14, x264 10bit, and ":keyint=60" added to the options (max GOP of 1 second for your 60 fps stuff). Quick check with your sample shows video bitrate dropping from 1gbps to 139mbps.

You need this dll plopped into Handbrake's folder for 10bit x264 to show up: https://mattgadient.com/download/han...main10.dll.zip . If anyone has a Mac, you can grab this: https://mattgadient.com/download/han...c-20170703.zip . Newer version of Win dll available at https://forum.handbrake.fr/viewtopic...169744#p169744 but you have to register (which is pretty painless).

4th April 2018, 11:48	#1 \| Link
easy2Bcheesy Moderator Join Date: Feb 2002 Posts: 643	Simple NvEnc Transcoding Tool? Hi there, I'm looking for simple GUI tool that will allow me to take 10-bit ProRes 4:2:2 footage captured at UHD 60Hz from an Atomos Shogun Inferno, and to transcode it into 10-bit h.264 4:2:2 using Nvidia NvEnc, at CRF 14. The idea here is to crunch down extremely large video captures into a more manageable size that we can more easily upload and share between staff working together remotely without losing much quality, and also with minimal transcoding time. Any thoughts? Also happy to consider other alternatives, though I've found that transcoding to HEVC makes the encoded files difficult to deal with at the other end...

4th April 2018, 12:16	#2 \| Link
Atak_Snajpera RipBot264 author Join Date: May 2006 Location: Poland Posts: 7,816	Why not use x264 in "fake" AVC-Intra ( --preset superfast --tune fastdecode --keyint 1 ) mode for this task? __________________ Windows 7 Image Updater - SkyLake\KabyLake\CoffeLake\Ryzen Threadripper Last edited by Atak_Snajpera; 4th April 2018 at 12:18.

5th April 2018, 00:37	#5 \| Link
Asmodian Registered User Join Date: Feb 2002 Location: San Jose, California Posts: 4,407	A collection of batch files for x264, setup so you simply drag and drop the video file on the one you want? __________________ madVR options explained

6th April 2018, 21:02	#7 \| Link
Asmodian Registered User Join Date: Feb 2002 Location: San Jose, California Posts: 4,407	Do you have a short sample I could use for testing a solution? __________________ madVR options explained

4th April 2018, 17:55	#3 \| Link
easy2Bcheesy Moderator Join Date: Feb 2002 Posts: 643	What's the simplest GUI with switch support that can do this? Not all of the team are expert encoders so I'd like to keep this as simple as possible.

4th April 2018, 19:00	#4 \| Link
poisondeathray Registered User Join Date: Sep 2007 Posts: 5,377	nvenc does not support encoding 10bit422 AVC

5th April 2018, 08:19	#6 \| Link
easy2Bcheesy Moderator Join Date: Feb 2002 Posts: 643	Is that something you help with Asmodian? We do have pretty fast CPUs here - we just need a way to shrink 10-bit 4K ProRes into a format we can share online while retaining quality. We need 10-bit in order to retain HDR data, and based on our NvEnc tests, CRF14 quality holds up even on a 200-300% zoom.

8th April 2018, 15:29	#8 \| Link
easy2Bcheesy Moderator Join Date: Feb 2002 Posts: 643	Here's a few seconds of 10-bit HDR (metadata gets manually injected in post): https://mega.nz/#!Y6x3gD4K!nw9R8Oq0X...xdsqiFQUeRwMc0 So it's about 670MB for 330 frames of UHD 4:2:2. You can see why we need to shrink the files somewhat!

10th April 2018, 15:56	#11 \| Link
foxyshadis Angel of Night Join Date: Nov 2004 Location: Tangled in the silks Posts: 9,559	Handbrake is still my quick-n-easy GUI of choice for people who aren't really interested in encoding. They have "production" presets that have no b-frames, one ref, and fast search; you might want to distribute a custom profile with CRF 14, x264 10bit, and ":keyint=60" added to the options (max GOP of 1 second for your 60 fps stuff). Quick check with your sample shows video bitrate dropping from 1gbps to 139mbps. You need this dll plopped into Handbrake's folder for 10bit x264 to show up: https://mattgadient.com/download/han...main10.dll.zip . If anyone has a Mac, you can grab this: https://mattgadient.com/download/han...c-20170703.zip . Newer version of Win dll available at https://forum.handbrake.fr/viewtopic...169744#p169744 but you have to register (which is pretty painless).