Audio distorted once it is exported

[lata]

Hi
Using the clips I managed to download I rendered the project ( 4 min 22 sec) using Share Same as first Clip
I playback the video with no problems

There are clicks and noises from the engine as I mentioned earlier, but no distortion as you seem to be hearing.
You indicate the distortion is noticeable.
If I were to play that video without being told there was a problem I would think it normal.

I guess you need to upload those samples, the original video and a rendered version.

By the way when you render the video what options did you choose?
I used same properties as original video

[rscott22]

Hi
Using the clips I managed to download I rendered the project ( 4 min 22 sec) using Share Same as first Clip
I playback the video with no problems

There are clicks and noises from the engine as I mentioned earlier, but no distortion as you seem to be hearing.
You indicate the distortion is noticeable.
If I were to play that video without being told there was a problem I would think it normal.

I guess you need to upload those samples, the original video and a rendered version.

By the way when you render the video what options did you choose?
I used same properties as original video

I'll ipload two clips to YouTube and share them One exported from COREL and one raw.

I'll make sure there the exact same time and length, this way you can watch and hear exactly where it's having issues. I appreciate the help on this as audio has been an issue for me for months now and has been my biggest issue with COREL. They have had to make 2 physical changes to the program because of it. There was a thread I started a few months back and they actually had to send out a fix for the sound issue I found when cutting clips of film it would cause horrible audio pops.

[rscott22]

Hi
Using the clips I managed to download I rendered the project ( 4 min 22 sec) using Share Same as first Clip
I playback the video with no problems

There are clicks and noises from the engine as I mentioned earlier, but no distortion as you seem to be hearing.
You indicate the distortion is noticeable.
If I were to play that video without being told there was a problem I would think it normal.

I guess you need to upload those samples, the original video and a rendered version.

By the way when you render the video what options did you choose?
I used same properties as original video

Here are two clips for you, both exactly the same. The only difference is I exported one from COREL and the other is raw video that I did not export.

Right away you can hear the distortion in the exported video, but id like for you to review also and hopefully give some feedback on how to remedy this issue.

raw Unedited video
https://youtu.be/vUCHCHlctBU

Exported video from COREL
https://youtu.be/dO4hLpAXFHg


Thanks,
Ryan Scott

[asik1]

I didn't run the full clip but,
over the first ~30sec it looks as the raw is ~3db higher than the VS's one.

raw

VS

Both are higher than the recommended -12db.

But if you constantly blame VS for that , than a proper test should be made in quieter environment
place your g-pro in the living room with TV at normal volume 8ft away and read aloud the newspaper 2 feet from the gpro.

[Ken Berry]

Either way, I simply did not hear any distortion at all in either of those two YouTube clips. While there might, as asik has found, have been a minor difference in db, both clips sounded identical to me. And I am afraid that I also have to agree with lata/Trevor about the earlier original clips.

rscott22 said of the YT clips that the distortion was supposed to be readily apparent right from the start of the VS rendered file. But both sounded absolutely identical to me throughout, and no distortion at all was apparent. And I have to say the same about the original clips. As other have already said, the only things noticeable were the loud engine noise and the clicks associated with the gear changes, but the voices sounded normal throughout in both clips -- and again, that goes for both the VS/original clips and the YT clips.

So personally I remain mystified as to what exactly rscott22 is hearing that the rest of us is not... Perhaps if rscott22 could pinpoint exact moments where he can hear distortion, and if he could describe with a bit more detail exactly what he is hearing... that might help.

[lata]

Hi Ryan

I do not think you have given us one of your rendered video files other than viewing on YT.
Can you upload the 1 minute or less sample of your rendered file to your Google drive rather than uploading to YT.
We can compare that with the originals GOPR0241.mp4 etc.

It is possible that YT re-codes the video.
When you render the project what settings do you use.?

But again and like Ken I cannot readily identify any problems.

I am beginning to suspect your pc environment and maybe your Audio Drivers????
Have you tried playing these back on a different PC?

[canuck]

When trying to download the raw, unedited video from youTube, I am given 11 different formats for downloading. I use a download manager (Internet Download Manager) but I don't think that it "renders" the video while downloading. I only see these multiple formats when dowloading from youTube. To me that indicates that youTube rerenders the video so that using these downloads for testing are meaningless.

[rscott22]

Hey Guys,

Thank you for your feedback, I appreciate everyone's honesty!

ASIK1 - I think you may be on to something as it does seem like the audio just is louder causing it to pick up more noise. I will attach all my settings for the project file, clip, clip properties and export.

One thing I did notice is that when exporting COREL is defaulting to AAC Audo: 192 KBPS, but in the raw editing format it shows the AAC Audio at only 128KBPS

This may be the culprit? IF so, can anyone give me guidance on how to adjust the the export AAC Aduio from 192 KBPS to the orginal raw of 128 KBPS

Thank you all for your time, I know I must be coming off a Real D*%$...... I am just frustrated at this time and I apologize for taking it out on you.

Thanks,
Ryan Scott

[rscott22]

Hi Ryan

I do not think you have given us one of your rendered video files other than viewing on YT.
Can you upload the 1 minute or less sample of your rendered file to your Google drive rather than uploading to YT.
We can compare that with the originals GOPR0241.mp4 etc.

It is possible that YT re-codes the video.
When you render the project what settings do you use.?

But again and like Ken I cannot readily identify any problems.

I am beginning to suspect your pc environment and maybe your Audio Drivers????
Have you tried playing these back on a different PC?

I have uploaded a 1 minute long Rendered video for you to the below Google Drive. Thanks for the help!

https://drive.google.com/open?id=0B5oKT ... mt3eGlPWGM

[Ken Berry]

And does that 1 minute video sound distorted when you play it back? It certainly doesn't at my end -- sounds just like the others with no distortion at all.

Adjusting the audio bitrate from 192 down to 128 is easy. Go to Settings > Project Preferences and select "Previous Setting" as in your Properties From Clip image aboe. Then select Edit down below that window. A new window will open. Select the Compression tab and go down to where 192 appears. Hit the downward pointing arrow and select 128, then OK out.

This presumes, though, that you are rendering using Same As Project Settings. But if you are using some other render settings, you can still edit the audio bitrate the same way.

[lata]

Hi Ryan

Your original video file is using a frame rate of 59.94 fps ( aka 60P)

When I rendered your project I use Same as First Video clip, although could have used Same as Project settings as they are the same. That would use the original frame rate as 59.94.

Now if you use Mpeg4 options, as the last image you posted did use 30P, effectively throwing away 50% of your video.
Downscaling the video from 60P to 30P should work well but with a reduction in quality.
As the video has little movement I doubt if we can see the difference, it would of course reduce the Audio, again hardly noticeable.

My question is if you are recording to 59.94fps why downscale to 30fps.

One of the YT I downloaded actually gave 1280 x 720 frame size? We should ignore any downloads from YT.

Ok I have downloaded the one minute sample, thanks for that, again it is using different settings to original.

Can you try rendering to Same as First Clip, option at the top left of the Share panel, text is greyed out till we put a tick in the square box.

That option will use the data rate 128kbps, I doubt we can hear any difference, but I guess worth a try.

If you wish to downscale:-

MPEG-4 Files
24 bits, 1920 x 1080, 30 fps
Frame-based
H.264 High Profile Video: 20000 Kbps, 16:9
48000 Hz, 16 Bit, Stereo
MPEG AAC Audio: 128 Kbps

Use Settings – Movie Profile Manager
Choose Mpeg4
Choose the add option and browse for your original video file.
You can edit that template to your liking, but retain the audio settings
Template could look like above.

Having said all that! I still cannot hear any distortion, yep maybe the levels are different and I can hear the engine noise, clicks and scratches but your speech seems clear to me?

As you are hearing distortion there has to be a difference in our setups and that may be our audio setup?

I'll double check that 1 minute sample and convert my own to see if I can tell a difference.............

[rscott22]

Thanks guys for your replies, Sadly that still did not fix the issue.

I have sent these files to multiple friends to try. They to can hear the distortion or what one my friends called "robot noise" in the background. They all said the raw file sounds clear, but the export/rendered video sounds distorted.

I know I am coming off as a pain, but I really can't keep having these audio issues when the raw file sounds perfect, but when exported sounds distorted. I even tested this by downloading onto another fiends computer hoping my laptop was just junk. Sadly again, we both hear the distortion/robot noise.

The last resort is to upgrade to Corel X10, but I do not want to pay for a program that doesn't fully work again.

Hopefully you guys can give me any other insight!

[asik1]

Maybe the problem is in your definition.
When you say distortion we understand that
https://www.youtube.com/watch?v=19zrJgAcZjU
or
https://www.youtube.com/watch?v=MvJVk_BMvnQ

but we don't hear such problem in your clip

[rscott22]

Maybe the problem is in your definition.
When you say distortion we understand that
https://www.youtube.com/watch?v=19zrJgAcZjU
or
https://www.youtube.com/watch?v=MvJVk_BMvnQ

but we don't hear such problem in your clip

Hey thanks for the reference, mine is not as severe as those videos, but the noise is there.

It's background noise you can hear (the mic is amplified for some resaosn and in the raw video sounds great only when rendered through Corel does it sound bad). I ask that you listen to these two videos again and listen carefully with headphones on. It sounds like robot noise as my friends says or distortion. Multiple people here the noise, so it is there. i just need to know how to fix the issue as it is specific only to Corel. I tried using other programs and had no issue with distortion once rendered.

Raw unedited video
https://www.youtube.com/watch?v=vUCHCHlctBU

&

Exported/rendered video
https://www.youtube.com/watch?v=dO4hLpAXFHg

thank you guys!

[lata]

Hi Ryan

No way are you being a pain, I do believe you when you say you can hear the distortion, something that I cannot identify.

I have rendered a 1 minute section from the original video GPO10241.MP4
This is the same section as your Rendered Video 1 Minute length.mp4

My rendered sample is called “Same as Project 1 minute.mp4”
That rendered quite quickly using Smart Render

I will uploaded the sample “Same as Project 1 minute.mp4” to my Google Drive and provide the link when done.
Can you compare GPO10241.MP4 (first minute) with this file.
https://drive.google.com/file/d/0ByJ2mS ... sp=sharing

Can you do another test
1 / start a new project
2 / add the GPO10241.MP4 video, from the message say yes to matching the project settings
3 / cut the video at 1 minute removing the last section
4 / Share – choose Same as Project Settings

How does that video sound?

Ok

I have listened to the two YouTube samples, I opened the two in my browser, hit F11 to hide the tabs, play any one for a while, Hit Space Bar to play / pause, Hit Ctrl+ Tab to switch tabs to play the second clip, Do that a few times and I have no idea which sample I am listening to, nothing to distract me and they both sound the same? I must be missing something, maybe my hearing is not as good as it used to be?

Can you take a video screen capture of your YouTube playback as it does seem as though you are listening to a different video.

If the problem is with YouTube have you tried using Vimeo