PD13 Profile Quality reduce bitrate

PlaySound

Senior Contributor Joined: Dec 02, 2010 10:26 Messages: 2031 Offline

Solved by

Apr 14, 2015 09:12

In search of the best image quality I use maximum bitrate for MPEG2, I have noticed the video after rendering shows a bit rate lower than the personal profile.

Does anyone have this problem, have a suggestion how to solve.

See image.

Thank you.


Filename	bitrate.jpg	Download
Description
Filesize	88 Kbytes
Downloaded:	84 time(s)

AMD-FX 8350 / 8GB DDR3
SSD SUV400S37240G / 2-HD WD 1TB
AMD Radeon R9 270 / AOC M2470SWD
Windows 7-64 / PD16 Ultimate

delboy35

Newbie Location: Scotland Joined: Apr 12, 2015 17:21 Messages: 23 Offline

Apr 14, 2015 18:17

Tried a render with your settings which gave me : bitrate 8.66 mbps (megabits per second)
average bitrate is 9,000 kbps (kilobits per second) 8.66 mbps = 8,660 kbps.

You got 7.6 mbps which equals 7,600 kbps.Its normal for values to not be exact ,it depends on the video being compressed.

.

This message was edited 1 time. Last update was at Apr 14. 2015 20:03

ynotfish

Senior Contributor Location: N.S.W. Australia Joined: May 08, 2009 02:06 Messages: 9977 Online

Apr 14, 2015 23:16

Hi PlaySound -

delboy35's right. The content on your timeline will be a contributing factor in the VBR of the produced file.

As an example, I rendered two very different projects to the same MPEG-2 720x576 @ 20MBps profile. One was just a still image & the other was a clip with 4 people dancing (lots of movement).

Even though the target bitrate was 20MBps for both, the resultant bitrate was very different. This how Bitrate Viewer saw the two clips...

Cheers - Tony

This message was edited 1 time. Last update was at Apr 14. 2015 23:17

Visit PDtoots. PowerDirector Tutorials, tips, free resources & more. Subscribe!
Full linked Tutorial Catalog PDtoots happily supports fellow PowerDirector users!

PlaySound

Senior Contributor Joined: Dec 02, 2010 10:26 Messages: 2031 Offline

Apr 15, 2015 06:45

delboy35 and ynotfishThank you for taking the tests now know it's not my PC.

I agree that the bitrate varies according to the complexity of the image.

Curious that even used bita rate fixed CBR 9kbps.

I still have this difeneça.It is but pronounced for FullHD files created in PD13.

Another created in Proshow bitrate was 9k1 bps.

2 video clip was slide photos with movement and transition, quality 1920x1080 x 16 Kbps.

I did in PD12 and was the same.I consider my doubts resolved.

Thank you AMD-FX 8350 / 8GB DDR3
SSD SUV400S37240G / 2-HD WD 1TB
AMD Radeon R9 270 / AOC M2470SWD
Windows 7-64 / PD16 Ultimate