VP 18 low performance with the new AVC decoder

vagnersouza wrote on 8/10/2020, 12:12 PM

I have a VP17 with dozens of GoPro Hero8 1920x1080 59.94fps footage. Perfectly runs on my VP17 video preview at 59.94fps

I opened the same project on VP18, and it ran like a quadriplegic turtle at 1 or 2fps.

After many hours of searching here and there, I found that I have to check the box in Options / Preferences / File I/O / Enable Legacy AVC decoding. Now my project ran again in the video preview at 59.94fps Best Full smoothly, as if there were no obstacles on the flat road.

Everything is working very well. I'm just warning you that the new AVC decoder leaves a lot to be desired in terms of performance.

My graphic board: AMD Radeon R7 200, 4GB

Operating System
Platform: Windows 10.0 (64-bit)
Version: 10.00.18362
Language: Portuguese
System locale: Portuguese
User locale: Portuguese

Processor
Class: AMD A10-7800 Radeon R7, 12 Compute Cores 4C+8G
Identifier: AuthenticAMD
Number of processors: 4
MMX available: Yes
SSE available: Yes
SSE2 available: Yes
SSE3 available: Yes
SSSE3 available: Yes
SSE4.1 available: Yes
SSE4.2 available: Yes

Display
Primary: 1920x1080x32

Comments

fr0sty wrote on 8/10/2020, 11:41 PM

My graphic board: AMD Radeon R7 200, 4GB (VCE 1.0)

VEGAS System Requirements

AMD/ATI® Radeon with 4GB and VCE 3.0 or higher (Radeon Pro series with 8GB for HDR and 32 bit projects)

Your hardware does not meet the minimum system requirements. You also need at least 16GB RAM for 1080p editing, 32gb for 4k.

VEGAS 17 probably works because you have so4compoundplug.dll disabled, so it isn't trying to use your outdated GPU to do the decoding. It's your system that leaves a lot to be desired in terms of performance, not the new decoder.

3POINT wrote on 8/11/2020, 12:00 AM

Wouldn't it be nice when Vegaspro18 automatically detects when recommended hardware is/isn't available and act accordingly?

RogerS wrote on 8/11/2020, 1:08 AM

That graphics card series launched in 2013.

vagnersouza wrote on 8/11/2020, 3:38 PM

Your hardware does not meet the minimum system requirements. You also need at least 16GB RAM for 1080p editing, 32gb for 4k.

I HAVE 16GB of RAM!

Which graphics card do you recommend me to buy?

fr0sty wrote on 8/11/2020, 4:48 PM

Any thing Geforce GTX 9xx series or higher will work (recommended to buy something in the RTX series, though, they seem to do better with VEGAS) these cards are all known to work in VEGAS 17 or later:

Geforce GTX 9xx (not recommended, this card is getting old), GTX 10xx, GTX 16xx, Geforce RTX 20xx

If you prefer AMD, I'd go with any GPU released in the past 2-3 years, you should be fine. Any of these cards, or newer, will do:

Tonga: Radeon R9 285, 380, 380X; Mobile Radeon R9 M390X, M395, M395X, M485X

Tonga XT: FirePro W7100, S7100X, S7150, S7150 X2

Fiji: Radeon R9 Fury, Fury X, Nano; Radeon Pro Duo (2016); FirePro S9300, W7170M

Polaris: RX 460, 470, 480; RX 550, 560, 570, 580; Radeon Pro Duo (2017)

In either case, the GPU must have AT LEAST 4GB of VRAM, preferably more.

The problem is, your GPU lacks the encorder/decoder chips necessary to process video in VEGAS, so when it tries to use them, you get really bad performance. The new video decoders utilize the GPU to help with decoding, the old ones that you likely had enabled in VEGAS 17 do not, so you need a modern GPU to handle that stuff.

fifonik wrote on 8/11/2020, 5:27 PM

R7 200 is a series, not exact GPU model. Could you provide exact model?

In any case, it has HW decoder (UVD 5 or 6) and it is strange that you have to turn on Legacy decoding to make it work.

Are you sure that you have not mixed up something and not disabled so4 as well when played with VP settings?

fr0sty wrote on 8/11/2020, 5:29 PM

Legacy decoding disables or enables so4 when checked/unchecked. You just don't have to go into internal settings to mess with it now, they made the option visible to everybody.