Is it possible to share clips of the same format?

Will share and tag you later, file is pretty big

@alifftudm95 Reminder you can use Shutter encoder or similar to reduce the file size by"Cut without re-encoding" to either create a mock project for testing purposes or upload a single file if you have diagnosed the file to be the problem without any relationship to project parameters

@ aliff Since you're changing framerate from 2160p50 to 1080p25, make sure that in your project settings resampling is disabled or not set to optical flow (which will cause tremendous slow rendering).

@lan-mLMC https://drive.google.com/drive/folders/1F3Rg1xsXGaj4xp82Eak5TOkcxOcslyAL?usp=sharing

@alifftudm95

I experienced a similar result with that media.

@ aliff Since you're changing framerate from 2160p50 to 1080p25, make sure that in your project settings resampling is disabled or not set to optical flow (which will cause tremendous slow rendering).

I always disable resampling

Beside slow rendering, the project in general is very sluggish. Delay and sometimes froze for solid 5 sec.

@alifftudm95

I experienced a similar result with that media.

Hmm I wonder why?

@alifftudm95

It doesn't appear to benefit from GPU decode or encode and doesn't make very good use of the CPU, either. At least on my older RX480 and CPU with no on-die video processing.

The timeline performance on my machine I so bad, I think I would find a machine that I'm not using and convert to MagicYUV RGB or ProRes before I even started the project.

The actual property of the shared clip is 10bit422HEVC.

It's a de/encode bottleneck in VEGASpro as @Former user reported many times, barely dependent on hardware from yesterday or today.

Transcode to e.g. ProRes seems the only way to solve the problem currently.

Than provided Media info seems not correct, 10bit422XAVC!

Mediainfo of the file that I downloaded:

General
Complete name                            : C:\Users\John\Downloads\C8761.MP4
Format                                   : XAVC
Codec ID                                 : XAVC (XAVC/mp42/iso2/nras)
File size                                : 1.28 GiB
Duration                                 : 52 s 320 ms
Overall bit rate                         : 210 Mb/s
Encoded date                             : UTC 2022-04-09 03:44:29
Tagged date                              : UTC 2022-04-09 03:44:29

Video
ID                                       : 1
Format                                   : HEVC
Format/Info                              : High Efficiency Video Coding
Format profile                           : Format Range@L5.1@High
Codec ID                                 : hvc1
Codec ID/Info                            : High Efficiency Video Coding
Duration                                 : 52 s 320 ms
Bit rate                                 : 200 Mb/s
Width                                    : 3 840 pixels
Height                                   : 2 160 pixels
Display aspect ratio                     : 16:9
Frame rate mode                          : Constant
Frame rate                               : 50.000 FPS
Color space                              : YUV
Chroma subsampling                       : 4:2:2
Bit depth                                : 10 bits
Bits/(Pixel*Frame)                       : 0.482
Stream size                              : 1.22 GiB (95%)
Encoded date                             : UTC 2022-04-09 03:44:29
Tagged date                              : UTC 2022-04-09 03:44:29
Color range                              : Full
Codec configuration box                  : hvcC

Audio
ID                                       : 2
Format                                   : PCM
Format settings                          : Big / Signed
Codec ID                                 : twos
Duration                                 : 52 s 320 ms
Bit rate mode                            : Constant
Bit rate                                 : 1 536 kb/s
Channel(s)                               : 2 channels
Sampling rate                            : 48.0 kHz
Bit depth                                : 16 bits
Stream size                              : 9.58 MiB (1%)
Encoded date                             : UTC 2022-04-09 03:44:29
Tagged date                              : UTC 2022-04-09 03:44:29

Other
Type                                     : meta
Duration                                 : 52 s 320 ms

Also, the big/signed PCM could occur problems.

Tips:

Yep playback of that file pretty much non existent, just a static image on screen.

Render 5.37mins

Also, the big/signed PCM could occur problems.

Tips:

I dont have the luxury to transcode all of this 200+GB file to ProRes that will create 400-500GB of file.

So what is the solution to improve the playback & render speed? Beside transcoding.

Reproduce your problem.

I would rather attribute it to the excessive bitrate: 210Mb/s, because it also plays unsmoothly in my Potplayer.

The actual property of the shared clip is 10bit422HEVC.

It's a de/encode bottleneck in VEGASpro as @Former user reported many times, barely dependent on hardware from yesterday or today.

Transcode to e.g. ProRes seems the only way to solve the problem currently.

If you don't mind, can you explain bout the bottleneck thingy ?

I've seen a forum post someone mentioning about current hardware (GPU if im not wrong), are not capable yet to decode latest codec from Sony or something, debayer, 10bit something I cant remember.

After double checking on main project, I realize it's a mixture of H264 and H265!

H264 is CAM 1

HEVC is CAM 2

Even tho H264 clip render faster (I test the render and get result of 15-18fps average), the playback performance

is still poor, but not as bad as HEVC clip. I've upload 2nd sample clip on the same drive link:

https://drive.google.com/drive/folders/1F3Rg1xsXGaj4xp82Eak5TOkcxOcslyAL?usp=sharing

There are 2 codecs, the modern one so4compoundplug.dll and the legacy one mxhevcplug.dll, responsible for AVC/XAVC/HEVC.

In the past there was a blacklist to filter certain formats/sourcematerials using this or that codec to achieve max performance. I don't know where the blacklist was/is.

With my Signature I can handle almost every kind material except this one: 10bit422HEVC.

@alifftudm95

Please state which camera(s) and/or outboard recorder(s) created these files.