Video/Audio Sync Issues on BD

tsteves5 · Post by **tsteves5** » Mon May 02, 2016 4:05 am

I apologize if this has been addressed here before. I keep getting "Sorry but you cannot use search at this time. Please try again in a few minutes." when trying to use the forum's search option.

I recently upgraded from VS X4 to X9 SP2. When creating Blu-Ray discs in X4, I never had any issues. When using X9, I have an issue with audio and video synchronization on Blu-Ray where my audio always seems to lag my the video by about a second. Videos that I have created in X9 and uploaded to YouTube do not have this synchronization issue.

I'm working with AVCHD (MTS) files that came from my Sony video camera. The data rate of one of the files is 10659 kbps.

I've set the project properties for "Blu-ray (1920 x 1080, 60i, 20Mbps)
MPEG Transport-Stream Files
24 bits, 1920 x 1080, 29.97 fps
Upper Field First
(HDMV-NTSC), 16:9
H.264 Video
Video data rate: Variable (Max. 20000 kbps)
Audio data rate: 384 kbps
Dolby Digital Audio, 48 KHz, 2/0(L,R)

I've also tried setting the project properties audio to Dolby Digital Audio, 48 KHz, 3/2(L,C,R,SL,SR)

Thanks for your time!

Post by **lata** » Mon May 02, 2016 9:51 am

Hi

Using CVSX9

From a new project add one of your original video files, you should get a popup panel asking that you match your project properties to your video files properties.
Choose details

Copy and paste the right hand panel’s text details to your post.
These should be the properties of your video file.
Now choose OK Yes.

If the above does not show the message panel, right click your clip and choose properties, what are they?

Where possible you should try to match your project properties to your video files properties.

Assuming your video is Bluray compliant you should render the project using those settings.

tsteves5 · Post by **tsteves5** » Tue May 03, 2016 1:42 am

Lata -

Here are the properties of my source videos:
MPEG Transport-Stream Files
24 bits, 1440 x 1080, 29.97 fps
Upper Field First
(HDMV-NTSC), 16:9
H.264 Video
Video data rate: Variable (Max. 16000 kbps)
Audio data rate: 256 kbps
Dolby Digital Audio, 48 KHz, 2/0(L,R)

I'll try another project using these settings for my project properties.

FYI - I tried making a DVD from this project. It worked perfectly. I have no audio/video sync issues on the DVD. The problem is only occurring on BD.

tsteves5 · Post by **tsteves5** » Tue May 03, 2016 4:43 am

So I made sure that the source video properties, the project properties, and the MPEG properties for file conversion are all the same. I made another BD disc. I still have the same audio/video sync issue.

Source Video Properties:
MPEG Transport-Stream Files
24 bits, 1440 x 1080, 29.97 fps
Upper Field First
(HDMV-NTSC), 16:9
H.264 Video
Video data rate: Variable (Max. 16000 kbps)
Audio data rate: 256 kbps
Dolby Digital Audio, 48 KHz, 2/0(L,R)

Project Properties:
MPEG Transport-Stream Files
24 bits, 1440 x 1080, 29.97 fps
Upper Field First
(HDMV-NTSC), 16:9
H.264 Video
Video data rate: Variable (Max. 16000 kbps)
Audio data rate: 256 kbps
Dolby Digital Audio, 48 KHz, 2/0(L,R)

MPEG properties for file conversion:
MPEG Transport-Stream Files
24 bits, 1440 x 1080, 29.97 fps
Upper Field First
(HDMV-NTSC), 16:9
H.264 Video
Video data rate: Variable (Max. 16000 kbps)
Audio data rate: 256 kbps
Dolby Digital Audio, 48 KHz, 2/0(L,R)

zoroku · Post by **zoroku** » Tue May 03, 2016 7:49 am

Does your video work well on other players? Most of the audio sync problem arises from the time axis damage. To fix audio/video sync issue, sometimes it will work after transcoding to another format. If the video work well on other players, check out the video info to see if it's compatible with X9...

Post by **lata** » Tue May 03, 2016 10:11 am

Hi

Ok you need to check each process to see where the problem is occurring.
First play the original file just to make sure there is no problems with that.

With your original video on the timeline, complete any editing.
Oh have you used any processes like Split Audio?

1 / Now render the project to original settings Share – Same as Project Settings
That will create a new video of your project.
Play the new video to check quality.

2 / start a new project , nothing on the timelines
Share Create Disc Bluray – opens the burner module
Top left Add Video add your new video file.
Lower Left Cogwheel ( Project Settings) make sure Do Not Convert is selected “ticked”
Create your menu etc.
Last page choose to Create a Bluray Folder, deselect “create to disc”
When you hit Burn the process should start with Create Menu.
If Create Title shows then something is wrong? As this is converting the video files again……

That will save the movie to a BDMV folder
Locate the Stream folder to play the file 0000.m2ts, that should be the actual video.
Does that play ok.

Also check the properties of this file just to make sure they are correct, same as original.

If all is good

You can repeat the above to burn a disc.
Or
Use ImgBurn (a free software) to burn the BDMV folder to disc

What problems if any are you having with the above process?

Regards

tsteves5 · Post by **tsteves5** » Thu May 05, 2016 4:34 am

I've been trying to isolate the source of this issue. It's driving me crazy.

I verified that the BD discs created on X9 have the same play-ability issue on different players. I tried a couple of different computers and my TV set-top box and all have the same audio/video sync issue. So, I know that it's not my player.

I verified that the source video files are fine. They are perfectly synced in Windows Media Player, VLC, and when playing inside of Video Studio.

I took a single 1 GB good source video clip, and re-rendered it in Video Studio using the same video settings. No issues here, the new video is synced perfectly.

I can take this same single video clip and create the BD Disc Folders. Using either the timeline or directly adding the video clip to the burner module, the result is perfect. No sync issues either. It doesn't matter if I force it to convert the video file "Convert Title" during creation, or it goes directly to "Convert Menu" during creation. The result of this is always synced.

Now when I create a timeline video with multiple source video clips, the videos get out of sync again. So why does multiple clips make a difference in the entire project sync? I'm not splitting audio or adjusting it any other way.

Post by **Ken Berry** » Thu May 05, 2016 6:09 am

It's not totally clear to me what you mean by saying you 'create a timeline video'. What timeline are you talking about: the timeline in the Editing module or the one in the Burning module?

If the former, with various videos in the Editing timeline do you then go to Share and select Blu-Ray i.e. selecting one of the disc burning options, with the burning module then opening with your project showing in the burning timeline? While this workflow should work, sometimes it doesn't and out of sync video and audio is a common result.

Instead, read lata's steps above, particularly 1 and 2 and follow that alternative workflow. In other words, first create a BD compatible video from your project and do this in the Editing module. The video most logically would be AVCHD but could also be transport stream mpeg-2. Then create a new project to clear the editing timeline. Then go to Share and select Blu-Ray. When the burning module opens its timeline should be empty. If there is anything there, delete it. Then go to the Add Media button in the top left of screen and navigate to where the new video clip you just made in the editing module is stored, and add it to the burning timeline. Then build a menu if you want one, and go to the Burn page. Personally, I would leave the 'Do not convert compliant MPEG files' box ticked. And hopefully this time the final disc should be in sync.

Post by **lata** » Thu May 05, 2016 11:00 am

Hi tsteves5

Thanks for the feedback and running those tests confirms you can burn a good disc.

For what its worth I have always created a video file first, then used that file to burn a DVD, and when I upgraded to Bluray use the same process, create the BD folder then use ImgBurn to burn the disc, Although VS should burn that ok.

When Ulead first allowed us to burn the project files (yes Ulead) it did cause problems for some, now it should work and for most it does a good job.
Even so I always create that video file, as does Ken.

When you allow the burner module to do that (render) the burn process starts with Convert Title, that part is rendering the files to a temp folder, then use that file to burn the disc. (C:\Users\Trevor\Documents\Corel VideoStudio Pro\19.0\DMF_TEMP)
Doing that ourselves misses that process with the added ability to play the completed video to check quality, knowing that the burner module will not convert the video again (no convert title) ensures we will get the same quality on disc.

The time taken to render is the same whatever approach we take, just that we split the process into sections.

Ok
I don’t really understand why you are having these problems as your latest properties look ok.
I would think the burner module is converting the project to 1920 x 1080 and not retaining the 1440 frame size, it will also change the data rate.

If you wish to try/test again using the project files, change the Mpeg conversion settings to match your video files settings as 1440 x 1080 (Project Settings cogwheel lower left) That may render ok???????

And like Ken I always have 'Do not convert compliant MPEG files' box ticked

Still the best option is to create your own video file.

tsteves5 · Post by **tsteves5** » Fri May 06, 2016 7:03 pm

This is getting strange...

So, I follow your 2-step process, where edit my videos together using the editing module and create/render a single file using the same setting as my video and project settings. Then I use the burner module to create a Blu-Ray disc from this file. Rendering the single file is where the audio/video sync issues seem to be occurring.

Using a 1 GB (~10 minute) single source video for testing, I performed these tests:

Test 1: New X9 project. Add the source video the the editor timeline. Create/render to a single .M2T file. Create a BD using this file. Result = Good. No sync issues.

Test 2: New X9 project. Add the source video to the editor timeline 3 times in a row creating a 30-minute long project. Create/render to a single .M2T file. Create a BD using this file. Result = Good. No sync issues.

Test 3: New X9 project. Add a bunch of smaller video files to the editor, then add my 1 GB test file at the end of the timeline. The total project length is now about 30-minutes. Create/render a to a single .M2T file. Result = Bad. The single .M2T file now has the audio/video sync issues.

Test 4: Perform the same as Test 3 using Video Studio X4 instead of X9, using the default X4 project and BD properties. Result = Good. No sync issues.

Test 5: New X9 project. Use same videos as Test 3, but now using the project and BD properties from the X4 test. Result = Bad. The single .M2T file now has they sync issue again.

I just don't understand why X4 works perfectly and X9 doesn't using the same source files and the same process. I'm starting to think there is a bug in X9.

Post by **lata** » Fri May 06, 2016 7:34 pm

Hi

Test 3

What are the properties of the “bunch of smaller video files”

X9 will change the project properties to match the first clip added to the timeline, X4 may not do that.

Are the project properties used in X4 and X9 the same?

tsteves5 · Post by **tsteves5** » Sat May 07, 2016 3:03 am

The "bunch of smaller video files" were shot on the same camera. They have the same properties as my 1 GB test video.
MPEG Transport-Stream Files
24 bits, 1440 x 1080, 29.97 fps
Upper Field First
(HDMV-NTSC), 16:9
H.264 Video
Video data rate: Variable (Max. 16000 kbps)
Audio data rate: 256 kbps
Dolby Digital Audio, 48 KHz, 2/0(L,R)

Here is my 1 GB test file properties:
MPEG Transport-Stream Files
24 bits, 1440 x 1080, 29.97 fps
Upper Field First
(HDMV-NTSC), 16:9
H.264 Video
Video data rate: Variable (Max. 16000 kbps)
Audio data rate: 256 kbps
Dolby Digital Audio, 48 KHz, 2/0(L,R)

You are correct. X4 does not change the project properties based on the first clip. For this test, I just used the default X4 project properties which are:
NTSC drop frame (29.97 fps)
MPEG files
24 bits, 720 x 480, 29.97 fps
Upper Field First
(DVD-NTSC), 16:9
Video data rate: Variable (Max. 8000 kbps)
LPCM Audio, 48000 Hz, Stereo

I didn't do the 2-step process in X4. I went from the editor timeline straight to the burner module, and created the BD. I had "Do not covert compliant MPEG files" checked. Here are the X4 BD module properties:
NTSC drop frame (29.97 fps)
MPEG files
24 bits, 720 x 480, 29.97 fps
Upper Field First
(DVD-NTSC), 16:9
Video data rate: Variable (Max. 8000 kbps)
LPCM Audio, 48000 Hz, Stereo

The completed 0000.m2ts file that was created by X4 for the BD has these properties:
MPEG Transport-Stream Files
24 bits, 1440 x 1080, 29.97 fps
Upper Field First
(HDMV-NTSC), 16:9
H.264 Video
Video data rate: Variable (Max. 16000 kbps)
Audio data rate: 256 kbps
Dolby Digital Audio, 48 KHz, 2/0(L,R)

canuck · Post by **canuck** » Sat May 07, 2016 3:16 am

tsteves5 wrote: .
.
I didn't do the 2-step process in X4. I went from the editor timeline straight to the burner module, and created the BD. I had "Do not covert compliant MPEG files" checked. Here are the X4 BD module properties:
NTSC drop frame (29.97 fps)
MPEG files
24 bits, 720 x 480, 29.97 fps
Upper Field First
(DVD-NTSC), 16:9
Video data rate: Variable (Max. 8000 kbps)
LPCM Audio, 48000 Hz, Stereo
..

The above are not BD properties but those for a standard DVD.

tsteves5 · Post by **tsteves5** » Sat May 07, 2016 3:51 am

I agree. Those are not BD properties. X4 does not have the ability to set the project properties resolution higher than 720x480. Regardless of the project properties, it still creates the 1440x1080 BD.

tsteves5 · Post by **tsteves5** » Mon May 09, 2016 5:06 am

So I'm now fairly certain that I've found a bug in how the Smart Render function in VSX9 handles MPEG files. Smart Render will cause about a slight frame shift in the audio and video, where the audio is placed ahead of the video, for every scene (or cut) in the editor timeline. This issue only seems to appear when when Smart Render for MPEG files. The issue is also not dependent upon OS or hardware platform.

I've been performing more tests that have led me to this conclusion.

Test 6: Take my 1 GB test file, which has perfect audio/video sync, in the editor timeline cut it down to 30 seconds in length, and create a 30-minute video that repeats the same clip 60 times. Render this video to a single .M2T using the project/video settings. See the attached 'Test 6a.jpg'. Now take this new .M2T file and re-open in VSX9. Split the audio so you can see the audio waveform. By comparing the audio waveform to the video, I can see a slight shift where the audio leads the video for every clip in the editor timeline. For example at 30 seconds, the audio leads the video by 1 frame. At 10 minutes, the audio leads by 7 frames. At 20 minutes it leads by 15 frames, and at 30 minutes it leads by 27 frames.

Test 7: Same as Test 6, but disable "Smart Render". The resulting single .M2T file is perfect. No audio/video sync issues.

Test 8: Re-rendered the 30-second source video clip to another MPEG setting of a different resolution. Same as Test 6, but now using this new clip. Once again, the audio and video had the sync issues. Here are the properties of the new clip.
MPEG-4 Files
24 bits, 720 x 480, 29.97 fps
Frame-based
H.264 High Profile Video: 2500 Kbps, 16:9
48000 Hz, 16 Bit, Stereo
MPEG AAC Audio: 160 Kbps

Test 9: Re-rendered the 30-second clip to an AVI. Same as Test 6, but now using the new AVI clip. This video rendered properly without sync issues. Here are the clip properties:
Microsoft AVI files
24 bits, 720 x 480, 16:9, 29.97 fps
Lower Field First
DV Video Encoder -- type 2
Interleave audio for every 15 frames
PCM, 48.000 kHz, 16 bits, Stereo

Test 10: Used the entire 1 GB H.264 test file in the editor timeline. Kept the entire video whole, but added cuts to the video about every 30 seconds. Rendered to a new .M2T file. This new file also had audio/video sync issues.

Test 11: The same as Test 6, this time on a completely different computer on a brand new installation of VSX9. The different computer was a Windows 10/Intel computer instead of the Windows 7/AMD machine that I've used for all of the previous tests. The result had the same audio/video sync issues.

So, I've managed to determine that the issue is present on MPEG edits and not AVIs, the issue occurs whenever cuts occur or source video changes in the editor timeline, and the issue is not dependent upon OS or computer hardware platform. Disabling "Smart Render" fixes the issue.

Alludo USER to USER Web Board

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