Well, you do not have Sony Vegas Pro 18 because it does not exist.

https://www.vegascreativesoftware.info/us/forum/sony-vegas-vs-vegas--110873/

Start here.

https://www.vegascreativesoftware.info/us/forum/important-information-required-to-help-you--110457/

Meanwhile, did you try searching your camera name in the forum search box?

I don't believe some of the a7sIII's formats are supported yet. Transcode using Catalyst Browse or another tool?

Not everyone has those files, so if you give here a link where we can download a small file you uploaded to dropbox or so, we can try or maybe find a way around?

Here is a download link to a small file. Please feel free to download it and try it on your VEGAS 18. Thank you!

https://www.dropbox.com/s/q7puoha0bn1a9gl/Sony%20A7Siii%2010%20bit%204%3A2%3A2.MP4?dl=0

Thanks for the clip. With VP 18.334 it plays back here. Not well- <3fps in 32 bit video mode and barely better than that in 8-bit full. No GPU decoding is used.
Update: if project is set to NTSC and this is added as slow motion it can play back in 8-bit mode at full 30fps @ preview/auto. Still no GPU decoding and it slams the CPU.



It says it uses   Name: so4compoundplug.dll, so if you have the legacy AVC decoding box checked that's probably your problem- without so4 enabled, 10-bit footage will be a green screen.

General
Complete name                  :
Format                         : XAVC
Codec ID                       : XAVC (XAVC/mp42/iso2)
File size                      : 416 MiB
Duration                       : 16 s 520 ms
Overall bit rate mode          : Variable
Overall bit rate               : 211 Mb/s
Encoded date                   : UTC 2020-09-13 20:57:54
Tagged date                    : UTC 2020-09-13 20:57:54

Video
ID                             : 1
Format                         : AVC
Format/Info                    : Advanced Video Codec
Format profile                 : High 4:2:2@L5.2
Format settings                : CABAC / 2 Ref Frames
Format settings, CABAC         : Yes
Format settings, Reference fra : 2 frames
Codec ID                       : avc1
Codec ID/Info                  : Advanced Video Coding
Duration                       : 16 s 517 ms
Bit rate mode                  : Variable
Bit rate                       : 200 Mb/s
Width                          : 3 840 pixels
Height                         : 2 160 pixels
Display aspect ratio           : 16:9
Frame rate mode                : Constant
Frame rate                     : 59.940 (60000/1001) FPS
Color space                    : YUV
Chroma subsampling             : 4:2:2
Bit depth                      : 10 bits
Scan type                      : Progressive
Bits/(Pixel*Frame)             : 0.402
Stream size                    : 395 MiB (95%)
Encoded date                   : UTC 2020-09-13 20:57:54
Tagged date                    : UTC 2020-09-13 20:57:54
Color range                    : Limited
Color primaries                : BT.709
Transfer characteristics       : BT.709
Matrix coefficients            : BT.709
Codec configuration box        : avcC

Audio
ID                             : 2
Format                         : PCM
Format settings                : Big / Signed
Codec ID                       : twos
Duration                       : 16 s 520 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                    : 3.02 MiB (1%)
Encoded date                   : UTC 2020-09-13 20:57:54
Tagged date                    : UTC 2020-09-13 20:57:54

Other
Type                           : meta
Duration                       : 16 s 517 ms

+1 Here almost the same experience as @RogerS  had, plus when a proxy has been made the file plays fluently

I can confirm that if I turn on Legacy AVC decoding, it will showing only green screen

Detected as XAVC-S media.

Plays fine here (proxy created, XAVC-S, legacy AVC dec. off). Similar to what @j-v says.

I don't think Magix did an update. It's just when you selected the right decoder and loaded the footage for the first time, it phoned home to activate the appropriate one.
(I didn't see this message, presumably because I triggered it at some time in the past)

@RogerS is probably right ^ . See #10 here .

XAVC-S 10-bit 4:2:2 is not a problem, but HEVC 10-bit 4:2:2 crashes the lot.

Does Magix 15 formerly known as Sony Vegas 15 support 10 bit? In particular sony and Lumix cameras. If so, can anyone tell me how to download a decoder update for 10 bit files on Sony Vegas 15?

FYI: Please note that there is still no "Sony" Vegas 15 either.

@Nathian-Steir

FYI: Please note that there is still no "Sony" Vegas 15 either.

@Nathian-Steir

so you don't know?

Yes, green screen means that the so4compoundplug.dll decoder is disabled, and that is required to decode 10 bit video. VEGAS does support 10 bit (and higher) video.

Holy moly. I had disabled so4... in internal options. When switched to enabled, most files from my a7s3 works fine in VEGAS 17! I have stable 25fps with GPU at 10%.

Holy moly. I had disabled so4... in internal options. When switched to enabled, most files from my a7s3 works fine in VEGAS 17! I have stable 25fps with GPU at 10%.

What exactly is so4? Thanks for your reply!

Holy moly. I had disabled so4... in internal options. When switched to enabled, most files from my a7s3 works fine in VEGAS 17! I have stable 25fps with GPU at 10%.

This is why it annoys me when youtube videos suggest by default that people should disable so4 in order to increase performance... it usually doesn't, and actually removes features.

Mario, So4 is a new decoder they built into VEGAS to handle decoding HEVC and AVC files. It decodes faster, and enables 10+ bit decoding, but in the beginning when they first rolled it out, it had some bugs, so many disabled it.

This is why it annoys me when youtube videos suggest by default that people should disable so4 in order to increase performance... it usually doesn't, and actually removes features.

This is the core of my criticism of these Youtubers.
They quickly put something online - but no more corrections when something changes in their statements.
And forever this is on the internet and the users run into a dead end.

Holy moly. I had disabled so4... in internal options. When switched to enabled, most files from my a7s3 works fine in VEGAS 17! I have stable 25fps with GPU at 10%.

This is why it annoys me when youtube videos suggest by default that people should disable so4 in order to increase performance... it usually doesn't, and actually removes features.

Mario, So4 is a new decoder they built into VEGAS to handle decoding HEVC and AVC files. It decodes faster, and enables 10+ bit decoding, but in the beginning when they first rolled it out, it had some bugs, so many disabled it.

If I remember correctly, I had some problems with something, and this is reason why I disabled this. I'm pretty sure, that this reason could hit me again in last expected moment :)

 

Mario, So4 is a new decoder they built into VEGAS to handle decoding HEVC and AVC files. It decodes faster, and enables 10+ bit decoding, but in the beginning when they first rolled it out, it had some bugs, so many disabled it.

If I remember correctly, I had some problems with something, and this is reason why I disabled this. I'm pretty sure, that this reason could hit me again in last expected moment :)

You probably did, but if it was with earlier builds or versions of Vegas, the problem may have been resolved since then. I'd stay with the defaults until you have a specific reason to change them. Good luck.