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TOPIC: Audio out of sync

Re: Audio out of sync 3 months, 1 week ago #226431

That's awesome - I did not know that. Do you think that will fix the issues that people had going from 12.6 to 14 or is that "flexible layout" merely a UI choice?

Hugly said: "Good day,

Which issue persists?"

The issue reported by the OP (where 12.6 works with certain non-standard FPS w/o desynch but desynch occurred after 14.0).

Re: Audio out of sync 3 months, 1 week ago #226433

  • hugly
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So you are referring to V14.0 when saying the issue still persists?
It's better to travel well than to arrive...

Re: Audio out of sync 3 months, 1 week ago #226440

Or whatever version is currently being used. What I DO know is that I was also having the same problems as the OP at the same time the OP reported it here but did not have those issues prior to the update which changed the UI, the containers, etc.

I just never came to the forum about it then as I was able to fix it.

So, whatever version is running now still has this same problem, if that makes sense.

Re: Audio out of sync 3 months, 1 week ago #226441

  • hugly
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timadvancedtech wrote:
So, whatever version is running now still has this same problem, if that makes sense.
Referring to sync issues caused by variable frame rate that's simply untrue. Furthermore, V12.6 had a list of bugs, I never wish to see again, although I have I license to run it.

If you run V14.0, whatever the reason is, I strongly recommend upgrading to the most recent release, which is 2020.1.1.
It's better to travel well than to arrive...

Re: Audio out of sync 1 month, 3 weeks ago #230068

  • bernyis
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Hi,

I make a family video each year for christmas. In the last years I did it with Lightworks.
But I always had problems with audios out of sync. I had read the forums, but did not find good solution. The best way was to restart the app frequently.
Now I try to make a new video with the Lightworks 2020.1.1.
Before I start I converted all of my audios to a constant rate audios.
After I start a project I upload only one audio file and start to play it the red moving point is async with the audio and if I copy it to a sequence it is obvious that it is out of sync.

Format : MPEG Audio
File size : 324 KiB
Duration : 20 s 715 ms
Overall bit rate mode : Constant
Overall bit rate : 128 kb/s
Writing library : LAME3.100
major_brand : isom
minor_version : 512
compatible_brands : isomiso2avc1mp41

What can be the problem?
Thanks.

Re: Audio out of sync 1 month, 3 weeks ago #230075

  • bernyis
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  • 1 month, 3 weeks ago
I use Win10.
I3-7020U 2,3Ghz
16 GB RAM

Re: Audio out of sync 1 month, 2 weeks ago #230126

  • bernyis
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  • 1 month, 2 weeks ago
I see, that usually hugly answered for the questions. Is this information enough? Or do you need something else?
Or do anybody read this post?

Re: Audio out of sync 1 month, 2 weeks ago #230127

  • Ciaran_
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Idk if it's much help but I just use the auto button under frame rate selection when I'm making the project and it works most of the time

Re: Audio out of sync 1 month, 2 weeks ago #230128

  • briandrys
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The full Mediainfo text report for the source video and the audio is usually required for solving out of sync issues.

Re: Audio out of sync 1 month, 2 weeks ago #230135

  • Jpaulbiss
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bernyis wrote:
I use Win10.
I3-7020U 2,3Ghz
16 GB RAM


That is a little under powered.
HP Elitebook 840, 2xDell U2312HM, UbuntuStudio 20.04 LTS, Lightworks Keyboard, Shuttle Pro 2 which works sometimes

Re: Audio out of sync 1 month, 2 weeks ago #230136

  • bernyis
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Hi,
Thanks for the answers.
I did not write the media info of video files as I had problems with a single audio file and I added info about it in my previous comment.
But I tried to start with "auto" framerate and now it works if I restart the app. Yesterday it did not work after several restarts.

Now I have the out of sync problem again but I was not able to simply reproduce:
If I start a new project, and import the problematic file there, then the app play it correctly. Thats why I think it is not a resource issue.

I have two types of videos. I put one from each type to my sample project and it worked properly. So it seems that some other edit command or more files in the project can cause this out of sync issue.

One type of file:

General
Complete name : C:\DSC_5228.MOV
Format : MPEG-4
Format profile : QuickTime
Codec ID : qt 2007.09 (qt /niko)
File size : 11.8 MiB
Duration : 10 s 761 ms
Overall bit rate : 9 198 kb/s
Encoded date : UTC 2019-01-25 18:47:46
Tagged date : UTC 2019-01-25 18:47:46
NCDT : NCTG

Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L3.1
Format settings : CABAC / 2 Ref Frames
Format settings, CABAC : Yes
Format settings, Reference frames : 2 frames
Format settings, GOP : M=3, N=12
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 10 s 761 ms
Bit rate : 8 731 kb/s
Width : 1 280 pixels
Height : 720 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 23.976 (24000/1001) FPS
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.395
Stream size : 11.2 MiB (95%)
Language : English
Encoded date : UTC 2019-01-25 18:47:46
Tagged date : UTC 2019-01-25 18:47:46
Color range : Full
Transfer characteristics : BT.470 System M
Matrix coefficients : BT.470 System B/G
Codec configuration box : avcC

Audio
ID : 2
Format : PCM
Format settings : Little / Signed
Codec ID : sowt
Duration : 10 s 761 ms
Bit rate mode : Constant
Bit rate : 384 kb/s
Channel(s) : 1 channel
Sampling rate : 24.0 kHz
Bit depth : 16 bits
Stream size : 504 KiB (4%)
Language : English
Encoded date : UTC 2019-01-25 18:47:46
Tagged date : UTC 2019-01-25 18:47:46

-------

This is the other type:

Complete name : C:\20181216_191852.mp4
Format : MPEG-4
Format profile : Base Media / Version 2
Codec ID : mp42 (isom/mp42)
File size : 163 MiB
Duration : 1 min 19 s
Overall bit rate : 17.1 Mb/s
Encoded date : UTC 2018-12-16 18:20:13
Tagged date : UTC 2018-12-16 18:20:13

Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4
Format settings : CABAC / 1 Ref Frames
Format settings, CABAC : Yes
Format settings, Reference frames : 1 frame
Format settings, GOP : M=1, N=30
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 1 min 19 s
Bit rate : 17.0 Mb/s
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate mode : Variable
Frame rate : 30.000 FPS
Minimum frame rate : 29.871 FPS
Maximum frame rate : 30.171 FPS
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.273
Stream size : 161 MiB (99%)
Title : VideoHandle
Language : English
Encoded date : UTC 2018-12-16 18:20:13
Tagged date : UTC 2018-12-16 18:20:13
mdhd_Duration : 79512
Codec configuration box : avcC

Audio
ID : 2
Format : AAC LC
Format/Info : Advanced Audio Codec Low Complexity
Codec ID : mp4a-40-2
Duration : 1 min 19 s
Source duration : 1 min 19 s
Bit rate mode : Constant
Bit rate : 128 kb/s
Channel(s) : 2 channels
Channel layout : L R
Sampling rate : 48.0 kHz
Frame rate : 46.875 FPS (1024 SPF)
Compression mode : Lossy
Stream size : 1.22 MiB (1%)
Source stream size : 1.22 MiB (1%)
Title : SoundHandle
Language : English
Encoded date : UTC 2018-12-16 18:20:13
Tagged date : UTC 2018-12-16 18:20:13
mdhd_Duration : 79661

----

I would appreciate any help.
Thanks.
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