Thanks for your help.

I recorded using Zoom (I'm still working on a good, greenscreen so I can record directly in Magix).

Here is the MEdiaInfo results for the clip.

General
Complete name                            : C:\Users\Krisr\OneDrive\Documents\Zoom\2020-10-21 10.19.04 Kris Roberson's Zoom Meeting 84990565506\Kaleb interview for shower.mp4
Format                                   : MPEG-4
Format profile                           : Base Media / Version 2
Codec ID                                 : mp42 (isom/mp42)
File size                                : 59.2 MiB
Duration                                 : 8 min 33 s
Overall bit rate mode                    : Variable
Overall bit rate                         : 966 kb/s
Encoded date                             : UTC 2020-10-21 15:28:34
Tagged date                              : UTC 2020-10-21 15:28:34

Video
ID                                       : 2
Format                                   : AVC
Format/Info                              : Advanced Video Codec
Format profile                           : High@L3.1
Format settings                          : CABAC / 11 Ref Frames
Format settings, CABAC                   : Yes
Format settings, Reference frames        : 11 frames
Codec ID                                 : avc1
Codec ID/Info                            : Advanced Video Coding
Duration                                 : 8 min 33 s
Bit rate                                 : 838 kb/s
Width                                    : 640 pixels
Height                                   : 360 pixels
Display aspect ratio                     : 16:9
Frame rate mode                          : Constant
Frame rate                               : 25.000 FPS
Color space                              : YUV
Chroma subsampling                       : 4:2:0
Bit depth                                : 8 bits
Scan type                                : Progressive
Bits/(Pixel*Frame)                       : 0.145
Stream size                              : 51.3 MiB (87%)
Title                                    : H.264/AVC video
Encoded date                             : UTC 2020-10-21 15:28:34
Tagged date                              : UTC 2020-10-21 15:28:34
Codec configuration box                  : avcC

Audio
ID                                       : 1
Format                                   : AAC LC
Format/Info                              : Advanced Audio Codec Low Complexity
Codec ID                                 : mp4a-40-2
Duration                                 : 8 min 33 s
Bit rate mode                            : Variable
Bit rate                                 : 126 kb/s
Maximum bit rate                         : 148 kb/s
Channel(s)                               : 1 channel
Channel layout                           : C
Sampling rate                            : 32.0 kHz
Frame rate                               : 31.250 FPS (1024 SPF)
Compression mode                         : Lossy
Stream size                              : 7.73 MiB (13%)
Title                                    : AAC audio
Encoded date                             : UTC 2020-10-21 15:28:34
Tagged date                              : UTC 2020-10-21 15:28:34

@Kris-Roberson

Hi Kris.

How old is your webcam?

Try increasing the the allowable bit rates. They look low to me and it could be dropping frames in the recording.

Also the audio. While MEP will cope with 32 kHz it's not optimal. 48kHz is the norm.

Also check your movie settings to make sure the project has similar settings to the files you use.

Ray.

The Webcam is less than a year old. The top for the cam is 32khz. Sounds like time for an upgrade.

When I import the video it asks if I want to adjust for the project and I allow it to adjust.

In the meantime, any thoughts on how 8 can rescue my current recording for use this weekend?

@Kris-Roberson

Hi

. . . . I recorded using Zoom . . . .

This would appear to be a common issue with Zoom recordings and is caused by latency in the system when recording a meeting.

Are you using Local recording?

As @CubeAce has pointed out there are also issues with the audio - the sample rate may cause issues within MEP.

I would try running the video through a video converter (Handbrake) to fix the audio to 48kHz sample rate and also ensure that the frame rate is truly constant.

. . . . I'm still working on a good, greenscreen . . .

Do you mean a green screen to put behind you when recording, or a background image for using in MEP?

John EB

Do you mean a green screen to put behind you when recording, or a background image for using in MEP?

I have a low quality green screen that works for programs like Zoom, but it's not the correct chroma color green for Magix to recognize well. Once I have that, I was planning on recording through the webcam directly into MEP.

Would I be better recording in OSB and then importing or is it sufficient to record directly in MEP?

I am downloading Handbrake now. Hopefully that will let me wade through the current recording. Then I can do better next time with better cam and applications.

Thank you all for your continuing help!

@Kris-Roberson

Hi Kris.

If you find your green screen doesn't work well with MEP using the green screen setting in the Chroma Key tool, choose Color instead and follow the instructions as it works much better than selecting the green 'Color to be hidden' setting.

As for the webcam. I'm more interested in when it was produced more than when you bought it. That resolution seems a bit dated unless you deliberately chose an SVGA setting to record.

Also you said you were using Zoom, and now you mention OBS studio. If it's OBS studio then the settings have to be altered from the default settings to work well within MEP.

Have a look at this thread for an explanation.

Ray.

@Kris-Roberson

I would try recording directly into MEP if you can as it is unlikely MEP would record in a format that it can not handle during editing.

I have lost some of the original footage and have had to reshoot to get a clean clip.

I can't quite understand how you have lost footage just by importing it into MEP?

@johnebaker @CubeAce

I am wondering if the large number of reference frames = 11(see Media Info) is tripping up MEP (and others). This is a newer development in AVC where it uses more than just the I frame to look back or ahead to create a better picture by averaging the information in multiple macro blocks - where the pixels are changing too quickly during fast, detailed, motion. For example when a block of pixels is momentarily obscured by some detail passing in front.

Peter

@Scenestealer

Hi Peter.

'Lost' as in unusable perhaps?

Thank you for yet another piece of the puzzle that is video data interpretation.

I did always wonder what that number represented and your explanation brings more clarity to my understanding.

I think that makes complete sense. But then how does altering the key frame interval help as it has rather than its default setting of 0 (Auto)?

It occurs to me that the 32kHz setting could also have come from the default settings within OBS as well as the picture size and bit rates.

@Scenestealer

Hi Peter

. . . . I am wondering if the large number of reference frames = 11(see Media Info) is tripping up MEP . . . .

It is possible, and could be made worse if the video is open GOP.

@CubeAce

. . . . Sounds like time for an upgrade . . .

Do check carefully that a new web cam is true 48kHz samplerate.

@CubeAce

Hi Ray

AFAICS the original video was not recorded in OBS - the codec ID is wrong and a line is missing from the MediaInfo data ie for OBS these are

- Codec ID: isom (isom/iso2/avc1/mp41)

- Writing application: Lavf58.29.100

Assuming the web cam microphone audio is via USB, then the 32kHz sample rate is set in the webcam.

John EB

Hi everyone,

Yes, I'm back.

So, I am having the same issue again.

I recorded using OBS studio and imported into magix.

Any time I make any adjustment to anything (cut video, add transitions, add objects, or even move an object from one line to another, etc.) the video desyncs from the audio. To get the video back on sync I have to save and close the project, close magix, reopen magix and the project and start the video from the beginning. The video remains synced until I stop to make an edit. Then the video goes out of sync again.

I have verified that Magix is up to date.

Really making life difficult at the moment.

Thanks in advance for your help.

@Kris-Roberson @johnebaker @CubeAce

Hi Kris

: C:\Users\Krisr\OneDrive\Documents\Zoom\2020-10-21 10.19.04 Kris Roberson's Zoom

Are you trying to edit a video with MEP that is residing in the cloud?

If so you could have all sorts of problems and you would need to start the project after downloading the video file to your hard drive.

Peter

@Kris-Roberson @johnebaker @CubeAce

Hi Kris

: C:\Users\Krisr\OneDrive\Documents\Zoom\2020-10-21 10.19.04 Kris Roberson's Zoom

Are you trying to edit a video with MEP that is residing in the cloud?

If so you could have all sorts of problems and you would need to start the project after downloading the video file to your hard drive.

Peter

 

Hello Peter,

Thanks for your thoughts.

I am not using a clip from the cloud. The video was recorded with OBS on the same computer I use to run MEP. The file is resident on the local drive.

@Kris-Roberson

Did you "convert" the OBS file with Handbrake before importing it to MEP, as advised earlier in the thread?

Jeff

Thanks for trying reminder!

Are there any modifications to the handbrake settings that need to happen or are the default sufficient?

Thanks again.

@Kris-Roberson

Hi

I do not have Handbrake installed at the moment, however for future OBS recordings try these settings or @CubeAce settings in the next post down.

John EB

Thanks!

Additionally, thanks for putting up with so many newbie questions.

So, I ran the OBS recorded video through handbrake then imported to the MEP project.

On cut and reposition of the video and the desync was back.

Back to having to save and shutdown the program to get to a stable, synchronized video.

I really am at a loss here.

Hi ALL!

Happy New Year!

I'm back to work with my video productions and I am having the same issues as before. ANY minor changes to the video causes a desync of the audio.

I did a recording of what happens so you can see what's going on.

Please take a look at the attached video where I explain and demonstrate what's happening.

@Kris-Roberson

Hi Kris.

Did you change your record settings in OBS as suggested or just try to redo them using Handbrake?

If the latter, then your settings may not have been correct for the conversion. The GOP structure from an OBS video that has not been converted correctly or at all is far too long and needs shortening.

Follow the link in John EB's last comment to see the OBS settings you need. Then the files should be editable without the need for converting first. Do read from John's comments to the end of page three though.

Ray.

@Kris-Roberson

Hi Kris

For the Handbrake conversion set the the export format to MP4 (on the summary tab) and the audio and video settings to those shown below

That should fix the issues.

John EB

@johnbaker

Thanks for those settings. I have verified that those are the setting I have with on exception. Rather than the audio reading, "1 English..." it is, "1 Unknown..." That is the only option available from that pull-down menu. I attempted to use the, "Selection Behavior" options and have only English language in the selected languages. No change.

@CubeAce

I verified the settings for OBS, re-recorded a 1 min video, and imported directly to MEP. Same issues when making any alterations, the video desyncs. I also ran that same 1 min video through hand brake with the settings noted by @johnbaker. The same desync of video happens with any modifications.

As you saw in my posted video, the smallest alteration results in glitches in video sync throughout the project.

I'm willing to try whatever to get this to work. I may end up just spending on a different video editing suite if I can't make this work. Not what I want to do... learn a whole new program... but I have to get the work done.

@Kris-Roberson

Hi Kris.

Do you have the latest Intel GPU driver installed?

Currently at .Driver version 27.20.100.9126 to go with the latest Windows 10 build? (20H2 OS build 19042.602).

If so these OBS settings are working for me.

That's 4 settings pages to check that each setting is the same. If you need a different frame rate make sure all the frame rate settings are made to be all the same. I changed the Bit rate from my last post to 10000Kbps to increase the quality of the recording. Notice I only have one audio track pair active.

I do not have any problems editing with those settings. If that doesn't work for you I'm out of ideas. Sorry.

The only other difference I can see is I am not running your version of Win10. I don't know if that makes a difference or not. I would not think so.

I'm assuming you have your GPU active in MEPs settings and have selected to use the direct X driver.

Ray.