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file size more than doubles after exporting
thepaladan [Avatar]
Newbie Joined: Jul 10, 2023 20:40 Messages: 3 Offline
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Hi,

I have a .mkv video with a resolution of 1920x1080 and 60. When I export it to that same resolution my file size goes from 187K to 382K. And this is without making any modifications at all. Just adding the original file to the project and exporting it. My only intent is to increase the overall sound level by 50% as the original recorded volume it way too low.

Any suggestions on how I can reduce the file size without losing the video quallity?

thanks,
thepaladan
JL_JL [Avatar]
Senior Contributor Location: Arizona, USA Joined: Oct 01, 2006 20:01 Messages: 6091 Offline
[Post New]
Quote Hi,

I have a .mkv video with a resolution of 1920x1080 and 60. When I export it to that same resolution my file size goes from 187K to 382K. And this is without making any modifications at all. Just adding the original file to the project and exporting it. My only intent is to increase the overall sound level by 50% as the original recorded volume it way too low.

Any suggestions on how I can reduce the file size without losing the video quallity?

thanks,
thepaladan

Click on the "+" sign to the right of the profile you used and reduce the video bitrate on the "Video" tab by changing the "Average bitrate" to 187/382=.49 times what it was set to.
or,
On the "Produce" page settings, use the "Profile Analyzer" at the top to see if PD can create a similar profile. If it can, use that and produce.

Jeff
thepaladan [Avatar]
Newbie Joined: Jul 10, 2023 20:40 Messages: 3 Offline
[Post New]
Quote

Click on the "+" sign to the right of the profile you used and reduce the video bitrate on the "Video" tab by changing the "Average bitrate" to 187/382=.49 times what it was set to.
or,
On the "Produce" page settings, use the "Profile Analyzer" at the top to see if PD can create a similar profile. If it can, use that and produce.

Jeff


Thanks Jeff, I tried both methods. I even took the bitrate down to the minimum of 3000 (was at 25500) and that still ended with a size of 339K. The "Profile Analyzer" came ended up at over 700k.


It's ok, just puzzling.

best regards,
Dan
JL_JL [Avatar]
Senior Contributor Location: Arizona, USA Joined: Oct 01, 2006 20:01 Messages: 6091 Offline
[Post New]
Quote Thanks Jeff, I tried both methods. I even took the bitrate down to the minimum of 3000 (was at 25500) and that still ended with a size of 339K. The "Profile Analyzer" came ended up at over 700k.


It's ok, just puzzling.

best regards,
Dan

Your filesize is rather small so audio encoding is probably a big chunk of filesize. "Profile Analyzer" only looks at video specs. Attach the text file from https://mediaarea.net/MediaInfoOnline for your source footage so we can see how it was encoded. Set video and audio tab encode settings to similar values.

Jeff
thepaladan [Avatar]
Newbie Joined: Jul 10, 2023 20:40 Messages: 3 Offline
[Post New]
Quote

Your filesize is rather small so audio encoding is probably a big chunk of filesize. "Profile Analyzer" only looks at video specs. Attach the text file from https://mediaarea.net/MediaInfoOnline for your source footage so we can see how it was encoded. Set video and audio tab encode settings to similar values.

Jeff


Metadata:


General
Unique ID : 289541321361797037540337606580124835657 (0xD9D3A14DE4C84F87B24A0991433CDF49)
Complete name : Transfer of ownership step by step -v1.20 - final.mkv
Format : Matroska
Format version : Version 4
File size : 182 MiB
Duration : 25 min 52 s
Overall bit rate mode : Variable
Overall bit rate : 984 kb/s
Frame rate : 60.000 FPS
Writing application : Lavf59.27.100
Writing library : Lavf59.27.100
ErrorDetectionType : Per level 1

Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4.2
Format settings : CABAC / 2 Ref Frames
Format settings, CABAC : Yes
Format settings, Reference frames : 2 frames
Codec ID : V_MPEG4/ISO/AVC
Duration : 25 min 52 s
Bit rate mode : Variable
Maximum bit rate : 40.0 Mb/s
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 60.000 FPS
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Default : No
Forced : No
Color range : Limited
Color primaries : BT.709
Transfer characteristics : BT.709
Matrix coefficients : BT.709

Audio
ID : 2
Format : AAC LC
Format/Info : Advanced Audio Codec Low Complexity
Codec ID : 2 / A_AAC-2
Duration : 25 min 52 s
Channel(s) : 2 channels
Channel layout : L R
Sampling rate : 48.0 kHz
Frame rate : 46.875 FPS (1024 SPF)
Compression mode : Lossy
Title : simple_aac_recording
Default : No
Forced : No


Dan
JL_JL [Avatar]
Senior Contributor Location: Arizona, USA Joined: Oct 01, 2006 20:01 Messages: 6091 Offline
[Post New]
Well, file size is 182MB, not "K". That's rather different.

Since overall bitrate is so low, 984 Kb/s, you'd have to do a manual custom profile for that by modifying profile.ini file located at C:\Users\xxxx\AppData\Roaming\CyberLink\PowerDirector\21.0\UserConfigure . I'd probably start with the 1920x1080/60p profile you adjusted the video bitrate to minimum of 3000, adjust name to something unique for this profile like "Ultra low bitrate 930Kbps", change audio tab to AAC and only 64Kbps to give you a little more bitrate for the video.

Open file profile.ini at address above, find your unique profile name and locate the lines
<Video BitRate>
<Min BitRate>
<Max BitRate>
and change to
<Video BitRate>930000
<Min BitRate>930000
<Max BitRate>930000

Select your unique profile you created named "Ultra low bitrate 930Kbps" and use that to produce your video. With that, a 25 min 52 sec file as yours will have a final file size of 183MB vs your target of shown by MediaInfo of 182MB.

Review your quality as that is a very low video bitrate.

Jeff
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