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Lower bitrate for 720p MP4 video?
NzYme [Avatar]
Newbie Joined: Jan 19, 2009 10:13 Messages: 6 Offline
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I see that the acceptable bitrate range doesn't go below 6000 kbps when exporting a 720P MP4 Video. Has anyone figured out on how to get a lower bitrate? I always thought I got acceptable image quality with a 3-4000 kbps bitrate at 720p. I would like to be efficient as possible when it comes to space and this would help...
Carl312
Senior Contributor Location: Texas, USA Joined: Mar 16, 2010 20:11 Messages: 9090 Offline
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You can create you own profile and set a lower bit rate. Carl312: Windows 10 64-bit 8 GB RAM,AMD Phenom II X4 965 3.4 GHz,ATI Radeon HD 5770 1GB,240GB SSD,two 1TB HDs.

Dafydd B [Avatar]
Senior Contributor Joined: Aug 26, 2006 08:20 Messages: 11973 Offline
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I have just tweaked an mp4 template to create a 3000kbps video bit rate (+audio). It is a do-able and reasonably simple procedure.

The Nature.mpg converted to an mp4. MediaInfo on the file is included below.

Is that what you're after? I'll write up the method.

*********************************
General
Complete name : J:\3000-720p.mp4
Format : MPEG-4
Format profile : Sony PSP
Codec ID : MSNV
File size : 6.27 MiB
Duration : 15s 915ms
Overall bit rate : 3 302 Kbps
Encoded date : UTC 2011-07-04 18:46:54
Tagged date : UTC 2011-07-04 18:46:54

Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : Main@L3.1
Format settings, CABAC : Yes
Format settings, ReFrames : 2 frames
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 15s 915ms
Bit rate mode : Variable
Bit rate : 3 124 Kbps
Width : 1 280 pixels
Height : 720 pixels
Display aspect ratio : 16/9
Frame rate mode : Constant
Frame rate : 29.970 fps
Resolution : 24 bits
Colorimetry : 4:2:0
Scan type : Progressive
Bits/(Pixel*Frame) : 0.113
Stream size : 5.93 MiB (95%)
Language : English
Encoded date : UTC 2011-07-04 18:46:54
Tagged date : UTC 2011-07-04 18:46:54

Audio
ID : 2
Format : AAC
Format/Info : Advanced Audio Codec
Format version : Version 4
Format profile : LC
Format settings, SBR : No
Codec ID : 40
Duration : 15s 850ms
Bit rate mode : Constant
Bit rate : 174 Kbps
Nominal bit rate : 192 Kbps
Channel(s) : 2 channels
Channel positions : L R
Sampling rate : 48.0 KHz
Resolution : 16 bits
Stream size : 336 KiB (5%)
Language : English
Encoded date : UTC 2011-07-04 18:46:54
Tagged date : UTC 2011-07-04 18:46:54

*************************
I've written the procedure up once already. I'll copy it here etc in a minute

This message was edited 1 time. Last update was at Jul 04. 2011 14:56

Dafydd B [Avatar]
Senior Contributor Joined: Aug 26, 2006 08:20 Messages: 11973 Offline
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3000kbps for an mp4
PART 1
1. Place your video into the track
2. select Produce
3. select Mpeg-4
4. select High Quality
5. select the "+"
6. In the dialogue popup enter a Profile name for the template
7. Enter a description - let's come back to this in a minute.
8. Go to the Video tab
9 Resolution - 720p
10. Ensure the frame rate - leave as default - match the original video you have.
11. select progressive
12. Leave at "Main File"
13 Entropy coding - I select CABAC
14. Average bitrate... select the lowest - 6000.
15. Advanced - I set mine to HQ on the slider .
16. I have Use deblocking checked.
17. Audio tab
18. Audio compression rate - you may want to play around with this to see what's best for you. PS3 was 128, so that should do.
19. Back to the Profile name tab and alter the description to note the selections you've made - 720p 3000kbps (yes i know it isn't yet).
20. Click OK
21. You will then be ready to render the footage to your own mp4 template.
22. Check back on the quality and tweak the custom template by selecting the "pencil" icon.

OK, we're done

Hwyl

Dafydd
Dafydd B [Avatar]
Senior Contributor Joined: Aug 26, 2006 08:20 Messages: 11973 Offline
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PART 2

You MUST carry out the above Profile creation before this next bit.

CLOSE PD9 before carrying out the following

1. Go to: C:\Users\YOUR-PC-NAME-HERE\AppData\Roaming\CyberLink\PowerDirector\9.0

2. Select Profile.ini and create a copy (this is your fall back) then open the original in Notepad - make sure when you select "Open with" you uncheck the "Always".

3. Select Format>Wordwrap - this is to allow you to view the information on screen.

4. You are looking for 720p 3000 in the text - the description you entered earlier.

5. See highlighted section. Changed from 6 to 3


&
<Class>MPEG-4 AVC
<Name>720p3000bit
<Description>
3000
<Output FileName>
<DescID>11922
<NameID>11923
<Group>2
<File Format Class>11
<Video Format Class>8
<Audio Format Class>10
<Stream Flag>3
<Field Order>0
<Attribute>40083
<Video BitRate>3000000
<Min BitRate>3000000
<Max BitRate>6500000
<Video Quality>0
<Video Width>1280
<Video Height>720
<Frame Rate>29.969999
<Profile Level>65357
<Pattern>IBPBPBPBPBPBPBPBPBPBPBPBPBPBP
<Pre Processing>0
<Resize>1
<Flip Video>0
<Speed Quality Indicator>7
<Interlacing>0
<Encoder Mode>0
<App Type>2
<Dynamic GOP>0
<Deblock>1
<EntryMode>1
<Encoder Type>32
<Audio Layer>2
<Audio Mode>2
<Audio BitRate>192000
<Audio Channels>2
<Audio SamplesPerSec>1
<Audio BitsPerSample>1
<Misc>0
<SamplesPerFrame>0
&&


6. Now go back to Format and uncheck Word Wrap.

7. Select save and close the file.

8. Now OPEN PD9 and test with a file and see if you can select the altered custom profile and produce with it.

Let me know how you get on.

Hwyl

Dafydd

edit redid the quote

This message was edited 3 times. Last update was at Jul 29. 2011 03:20

NzYme [Avatar]
Newbie Joined: Jan 19, 2009 10:13 Messages: 6 Offline
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That sounds like what I want. I'll give it a shot later today. Thanks!!!!
Wayne Bertram [Avatar]
Newbie Location: Adelaide, Australia Joined: Dec 30, 2011 23:43 Messages: 3 Offline
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HI there Dafydd

First, thank you for your reply and pointing me to the profile tweaking information. I have followed the procedure and made a new profile for an H.264 AVC setup. After saving it I went and found the profile.ini file: C:\Users\Wayne\AppData\Roaming\CyberLink\PowerDirector\10.0\Profile.ini

It has all the information I entered but when I reopen PD10 and go back to the Produce 2D page and select H.264 AVc I only get the previous (factory) profiles and my new one doesn't come up. Is there something I have to do to merge this profile with the factory settings so it comes up since I see no way of opening a profile from the HDD?

I notice the instructions were for PD9 and everything was where it should be but is there something I'm missing. The only thing different seems to be the double quote at the top of the ini file you pasted. I tried that - it made no difference. I added another profile and this is reflected in the profile.ini file also but again, neither are available for sselction after going back into PD10....

I'd appreciate any further help you may have.

Cheers

Wayne "I have always wished for my computer to be as easy to use as my telephone; my wish has come true because I can no longer figure out how to use my telephone." - Bjarne Stroustrup
Kevin888 [Avatar]
Newbie Joined: May 16, 2012 11:09 Messages: 1 Offline
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As for me, i will never reencode at a lower bitrate, cause Lower bitrate = lower quality. Any one have an altinative?

Digitize physical DVD to MP4 Mac .
jkim248 [Avatar]
Newbie Location: India Joined: Oct 09, 2012 08:08 Messages: 3 Offline
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I use to be very unhappy about Cyberlink PowerDirector and have posted testy post on these forms but after reading some articles, understanding the video decoding/encoding process and working with PowerDirector 11, I gotta say I'm pretty happy with it now.

You can compress at lower bits per second using method above. It's a bit of an inconvenience but it's workable.
Encoding process is pretty fast and the results are pretty good.
Biggest gripe I had was I couldn't get the Hardware video encoder to work with my AMD 6990M graphics processor.
But hardware encoding + lower bitrate does not always matter.

This article was what changed my mind.
http://www.behardware.com/articles/828-1/h-264-encoding-cpu-vs-gpu-nvidia-cuda-amd-stream-intel-mediasdk-and-x264.html

Lower bitrate does not necessarily mean lower quality.

PowerDirector does still have some problems.
Like memory release and lack of variable Index frames but overall gotta say I'm pretty happy.

I seem to posted so many testy negative posts about PowerDirectory, I figure I gotta balance it out now.
BarryTheCrab
Senior Contributor Location: USA Joined: Nov 06, 2008 22:18 Messages: 6240 Offline
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Wayne,
I suspect you can't find your new profile because when you click the DROPDOWN MENU to find it, you choose DEFAULT, rather than CUSTOM, or ALL, in the Produce section. HP Envy Phoenix/4thGen i7-4770(4@3.4GHz~turbo>3.9)
Nvidia GTX 960(4GB)/16GB DDR3/
Canon Vixia HV30/HF-M40/HF-M41/HF-G20/Olympus E-PL5.
Tape capture using 6 VCR, TBC-1000, Elite BVP4+, Sony D8 camcorder with TBC.
https://www.facebook.com/BarryAFTT
AllanSmithee [Avatar]
Member Joined: Mar 13, 2015 19:16 Messages: 54 Offline
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Quote: I have just tweaked an mp4 template to create a 3000kbps video bit rate (+audio). It is a do-able and reasonably simple procedure.


Dafydd, sorry to drag up an old post, but is it possible to create a 540p MP4 template?

It seems PD13 doesn't come with any native 16:9 profiles for encoding MP4 with either H.264 or H.265 lower than 720p.

I'm trying to produce the highest possible quality 16:9 video under 100 MBs. I understand the newer codecs produce better video quality with smaller file sizes, hence I'd like to use H.264 if possible; unfortunately there are profiles for creating 16:9 (widescreen) MP4 video at lower resolutions such as 960x540 or 640x360

Thanks

EDIT: questions answered in another post:
http://forum.cyberlink.com/forum/posts/list/13225.page#255765

This message was edited 1 time. Last update was at Jun 21. 2016 18:37

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