Announcement: Our new CyberLink Feedback Forum has arrived! Please transfer to our new forum to provide your feedback or to start a new discussion. The content on this CyberLink Community forum is now read only, but will continue to be available as a user resource. Thanks!
CyberLink Community Forum
where the experts meet
| Advanced Search >
SVRT vs Intel Quick Sync
Jackcident [Avatar]
Newbie Joined: Dec 31, 2020 10:10 Messages: 11 Offline
[Post New]
I've been converting old VHS tapes to digital and have edited 12 so far in PD365. They have all been captured using the same equipment and all run about 2 hours.

On all of them my editing has been basicly the same and I produced them with SVRT with a finished file size of about 2.5MB.

When I went to produce the last one, on the produce screen Intel Quick Sync was already checked and it would not allow me to select SVRT. This finished file came out to be 5.5MB.

What is the reason for this? I haven't changed anything as far as I know. Thanks for any insight and patience as I'm very new to video editing.
[Thumb - Screenshot (4).png]
 Filename
Screenshot (4).png
[Disk]
 Description
screen shot
 Filesize
966 Kbytes
 Downloaded:
9 time(s)
Warry [Avatar]
Senior Contributor Location: The Netherlands Joined: Oct 13, 2014 11:42 Messages: 853 Offline
[Post New]
what might help give you a hint what may be the cause of this is:
Switch on the SVRT track in the timeline. This will show you which parts or parts of the timeline "allow" SVRT (showing green) and which don't (red).
You can then either change the changes you made in the time line or see that the input format of the clip and/or the output format selected can be changed to allow SVRT.
Let us know whether that helps...
Jackcident [Avatar]
Newbie Joined: Dec 31, 2020 10:10 Messages: 11 Offline
[Post New]
Quote what might help give you a hint what may be the cause of this is:
Switch on the SVRT track in the timeline. This will show you which parts or parts of the timeline "allow" SVRT (showing green) and which don't (red).
You can then either change the changes you made in the time line or see that the input format of the clip and/or the output format selected can be changed to allow SVRT.
Let us know whether that helps...


Thanks for the response. I turned on the SVRT track and the entire video was red. I'm really not sure what I did differently to cause that as well as the produced file being about twice the size of the other ones I've done.

The produced video quality is the same as the previous ones so I guess it doesn't matter in that regard.

Just curious as to what caused it.
JL_JL [Avatar]
Senior Contributor Location: Arizona, USA Joined: Oct 01, 2006 20:01 Messages: 6091 Offline
[Post New]
Click the "Profile Analyzer" in the Produce room and see if PD can create a viable SVRT profile. Your currently defined 640x480/30p profile specified a little strange but surely possible.

Jeff
tomasc [Avatar]
Senior Contributor Joined: Aug 25, 2011 12:33 Messages: 6464 Offline
[Post New]
In addition to what Jeff suggested, Use MediaInfo/Text (freeware) to view the source file of a successful svrt project and the source file of the non successful svrt project. Save the text of both and post it here on your next reply.

If you added any effect, color correction, stabilization, and/or watermark then svrt or smart rendering can’t be used as it has to be rendered with these new additions. Check for the orange i seen at the left corner of each clip to indicate this on the timeline. A screenshot of your timeline may be helpful.
Jackcident [Avatar]
Newbie Joined: Dec 31, 2020 10:10 Messages: 11 Offline
[Post New]
Quote Click the "Profile Analyzer" in the Produce room and see if PD can create a viable SVRT profile. Your currently defined 640x480/30p profile specified a little strange but surely possible.

Jeff


The 640x480/30p was shown as the best matched profile in the profile analyzer. Being the most basic basic basic of entry level video editors, I'm really not sure what drives that as being the best. When I started my first project, PD recommended a 4:3 aspect ratio which I thought would dictate what the output needed to be, is that correct?

My edits were of the most basic types.... Trimming, scrolling title, text, a couple short music clips is all I really did to the project.
[Thumb - Screenshot (7).png]
 Filename
Screenshot (7).png
[Disk]
 Description
 Filesize
650 Kbytes
 Downloaded:
2 time(s)
[Thumb - Screenshot (5).png]
 Filename
Screenshot (5).png
[Disk]
 Description
 Filesize
679 Kbytes
 Downloaded:
2 time(s)
[Thumb - Screenshot (6).png]
 Filename
Screenshot (6).png
[Disk]
 Description
 Filesize
678 Kbytes
 Downloaded:
2 time(s)
Jackcident [Avatar]
Newbie Joined: Dec 31, 2020 10:10 Messages: 11 Offline
[Post New]
Quote In addition to what Jeff suggested, Use MediaInfo/Text (freeware) to view the source file of a successful svrt project and the source file of the non successful svrt project. Save the text of both and post it here on your next reply.

If you added any effect, color correction, stabilization, and/or watermark then svrt or smart rendering can’t be used as it has to be rendered with these new additions. Check for the orange i seen at the left corner of each clip to indicate this on the timeline. A screenshot of your timeline may be helpful.


Thank you but I'm really not sure how to access the Mediainfo/text. I didnt use any effect, color correction,stabilization or watermark, just some basic editing from the media room and the title room.
[Thumb - Screenshot (7).png]
 Filename
Screenshot (7).png
[Disk]
 Description
 Filesize
650 Kbytes
 Downloaded:
4 time(s)
optodata
Senior Contributor Location: California, USA Joined: Sep 16, 2011 16:04 Messages: 8630 Offline
[Post New]
Quote Thank you but I'm really not sure how to access the Mediainfo/text

Go to their website and drag one of your clips onto it, then choose Download MediaInfo Report and attach it here.
Warry [Avatar]
Senior Contributor Location: The Netherlands Joined: Oct 13, 2014 11:42 Messages: 853 Offline
[Post New]
what is the clip in track 2? That may cause the problem?
Jackcident [Avatar]
Newbie Joined: Dec 31, 2020 10:10 Messages: 11 Offline
[Post New]
Quote

Go to their website and drag one of your clips onto it, then choose Download MediaInfo Report and attach it here.


Thanks for the link. Attached is one of my clips.
 Filename
Tape9.mp4_MediaInfo.txt
[Disk]
 Description
 Filesize
3 Kbytes
 Downloaded:
194 time(s)
Jackcident [Avatar]
Newbie Joined: Dec 31, 2020 10:10 Messages: 11 Offline
[Post New]
Quote what is the clip in track 2? That may cause the problem?


That is a audio clip of background music. I'ts from the media room, and I did edit it in Audio Director. I have placed similar clips on previous projects with no issue.
JL_JL [Avatar]
Senior Contributor Location: Arizona, USA Joined: Oct 01, 2006 20:01 Messages: 6091 Offline
[Post New]
Quote Thanks for the link. Attached is one of my clips.

SVRT does not support highly variable fps source footage, from your file
Frame rate mode : Variable
Frame rate : 29.970 (29970/1000) FPS
Minimum frame rate : 8.862 FPS
Maximum frame rate : 29.970 FPS
Original frame rate : 29.970 (30000/1001) FPS

If in fact the 8.862fps is present in the file for any lull in action, PD SVRT will not function with this and the video will be fully encoded.

Secondly, from your file the video bitrate is:
Bit rate : 2 252 kb/s

You are using a 6Mbps profile, since SVRT can't be used, the encoding will be done at 6Mbps vs the 2.2Mbps in the source file. This will create a large increase in file size. If you want the smaller file size and you are happy with video quality, click the "+" icon to the right of the profile and modify the video tab to have a bitrate of 2250 Kbps and you will have similar file size as your source after full PD encoding.

Jeff

This message was edited 1 time. Last update was at Feb 07. 2021 09:44

Jackcident [Avatar]
Newbie Joined: Dec 31, 2020 10:10 Messages: 11 Offline
[Post New]
Quote

SVRT does not support highly variable fps source footage, from your file
Frame rate mode : Variable
Frame rate : 29.970 (29970/1000) FPS
Minimum frame rate : 8.862 FPS
Maximum frame rate : 29.970 FPS
Original frame rate : 29.970 (30000/1001) FPS

If in fact the 8.862fps is present in the file for any lull in action, PD SVRT will not function with this and the video will be fully encoded.

Secondly, from your file the video bitrate is:
Bit rate : 2 252 kb/s

You are using a 6Mbps profile, since SVRT can't be used, the encoding will be done at 6Mbps vs the 2.2Mbps in the source file. This will create a large increase in file size. If you want the smaller file size and you are happy with video quality, click the "+" icon to the right of the profile and modify the video tab to have a bitrate of 2250 Kbps and you will have similar file size as your source after full PD encoding.

Jeff


Thanks Jeff and everyone who responded to my call for help. I changed the bitrate as suggested and it did indeed reduce the file size to similar to what I had seen on previous projects. The 2mb vs the 5mb video quality looks the same to my admittedly untrained eye. I have to admit I don't really understand the whats, whys and where fors but trying to learn so thanks again.
Powered by JForum 2.1.8 © JForum Team