Synchronization problem and subtitle flashes

[lacobo]

Hello, having some trouble with Nero Video 8.2.15700.3.100. I use Nero Vision for a few years now, and never had the troubles below:

1) I have 3 different 90 minute recordings from a musical, all 3 with perfect aligned video and sound. As always, editing in Video/Vision is an easy thing to do (see picture).
When viewing in NeroVideo all is nicely synchronized. But when exporting to MPG2 (to create a DVD) the video and sound start perfectly aligned, but after 20 minutes the audio is more than a second ahead of the video.


2) The option "Static Text" sometimes makes the video go black for a blink of a moment. Around once every 10 times I use it (and I use it a lot, because all the singing of the musical is subtitled).

As I said, both problems where not there with Nero Vision. I need to bring out a DVD in about two weeks. Help!

I use Windows 7 Ultimate 64bit.

Thanks,

Bert.

Attached thumbnail(s)

 

[adrianob2]

1- Some issue like this has been posted in the forum, check out this Thread till the post #5.
I don't want to fully investigate the format of your input files to see if your issue has been solved or it's newer.

You have .MTS input and .MPEG2 output.
I suggest to you of using Recode to convert input videos before of using them in Video.
Make a test project, putting just some clips and burning it to hard disk folder, then make the same kind of project with same input clips (but in .MTS original format) and verify the output sync of both.

After this is solved, we look at the Text issue.

2- Can you give more information about the input files (format, how do you obtain them,..)

The part #1 is a workaround to obtain a DVD, The part #2 is for investigating the issue.

Hope this helps
Adriano

[lacobo]

Thanks for the quick response. The video recording was done with a Sony Nex-VG20, Full HD, 25p camera. Had an audio recording from the mixing panel (the cold sound of the mixer) which I superimposed to the audio recording of the camera, using Sony SoundForge (converted the camera-audio to a 4 channel WAV, added the 2 channels of the mixer and then converted back to 2 channel sound again).

Used Sony Vegas Moviestudio HD Platinum v11 to replace the recorded audio to the mixed audio. Exported this video/audio signal as a 720P mt2 file. Did this for all 3 recordings of the Musical.

Started editing in Vegas Moviestudio, but figured that I was more at ease using Nero Vision, and that's how the trouble started.

Now converting the 3 streams into MP4, using Nero Recode, but I need to redo the whole editing afterwards isn't it? No way to export the edit list, or swap the video files? Already spent +10 hours on it...



Bert.

[adrianob2]

I need to redo the whole editing afterwards isn't it? No way to export the edit list, or swap the video files? Already spent +10 hours on it...

I understand, but unfortunatly the moment I can't answer to this question.

Keep safe your original project, we manage to discover the item that generate problem.
When we finish we know if we can just substitute one or some items (I hope so!), or not...
The reason why I proposed this is that you have a time contraint of two weeks, and a forum is a not effective tool to shorten the working time.
The idea is to check every step of the project through subsequent exports (or burn to hard disk folder) after Recoding input files using NeroRecode.

Actually you have several input from Vegas Moviestudio and Sony SoundForge: some kind of reflexions: are they correct and are they all consistent with Nero Video?
Have they all same format?
Nero Recode is more robust encoder/recoder (vs NeroVideo), so I suggest to recode all files, in format that is equal/suitable to finale output (so we can use Video smart encoding feature and reduce process time).

May I ask you why export to Mpeg instead of burn DVD?

Do you agree? Do you wish some other explanation?

Regards
Adriano

[lacobo]

The Soundforge waves are used in Vegas Moviestudio, so they shouldn't matter. The resulting video has the following format:

File extension: m2t

Video: Frame width: 1280 Frame height: 720 Data rate: 18300kbps Total bitrate: 18684kbps Frame rate: 25 frames/second

Audio: Bit rate: 384kbps Channels: 2 (stereo) Audio sample rate: 48 kHz.



Converted to MP4 things seem to stay in sync indeed (after an MPG2 testfile of 45 minutes all still fine).

I can use the titles from the original project and switch the video, that is probably the fastest way to a new project.



Why MPG2? Maybe a silly habit. I first make an MPG2 file, then insert this in NeroVideo again to add chapters, a menu etc.

Probably this can be done in one project, but for me it's the easiest way.



Bert.

P.S: Added the project file (only had to rename .nvc into .txt).

This post has been edited by lacobo: Apr 16 2012, 09:25 PM

Attached File(s)

 MusicalMaria1.txt ( 4.89MB ) Number of downloads: 44

 

[adrianob2]

Hi Bert

Why MPG2? Maybe a silly habit. I first make an MPG2 file, then insert this in NeroVideo again to add chapters, a menu etc.

Probably this can be done in one project, but for me it's the easiest way.

I understand now. You will end this step with two or three MPG that will be inserted in Nero Video, you will make menu and then burn.

In this case, maybe you can do a try with your original project, exporting in AVCHD / BluRay - AVCHD Compatible and configure the output as in attached picture. This format is similar to your input, and, who knows, the export will be succesful.
Then you have few input to import in final project, and they are output from Video itself.

It's a fast attempt.

Please keep me informed.

Regards
Adriano

This post has been edited by adrianob2: Apr 17 2012, 12:01 AM

Attached thumbnail(s)

 

[wither]

We sometimes ask people to use Recode in the event that there may be dropped frames causing a synch problem. If that doesn't work, we may suggest that they use something like ts-muxer. Sounds like using Recode did the trick.

I noticed that you have lots of video on Video tracks 2 and 3. Is there a reason for that?

If the static text opacity is set to 100 in all cases, I can't explain the blackening effect.

[lacobo]

Thanks Adriano! That does the trick. Now I can continue to work on this project, without redoing everything. It also seems to cure the title flashing. Superb!

And to answer Wither: The first night of the musical I was positioned in the back of the church on a steady table with the (video)tri-pod sticked on it with tape (to prevent falling off and hurting peope or wracking the camera. Although the construction seemed very stable, if I zoomed in and moved as much as a toe I saw camera shake (even with active steady-shot). So can't use big parts of this video.

The next afternoon I was on the front-left, with the tri-pod on wheels, more stable, but sometimes I picked up the waving arms of the conductor. The last evening I was on the right, in-between the audience, the best position. So that's why tracks 2 and 3 are used the most. The result of the video edit is a TV-like experience with switching positions. Fun and rewarding to do, but very time-consuming. So I'm happy that I don't have to redo the first 30 minutes (and spend another 10 hours on it).

Thanks again to Adriano!

Bert, a happy NeroVision/Video user.

[adrianob2]

Glad to help you.
Sometimes we have the right idea!

Adriano

[lacobo]

In the end things still got out of sync after about 30 minutes (of the +90). I solved it by cutting the final movie project of Nero Video in pieces of 10-20 minutes each. Exporting them as AVC-Blue Ray, converting to MP4 using Nero Recode and then stitching the separate pieces again in Nero Video. Quite some work, but now all in in sync. Phew...

Bert.

[wither]

You shouldn't have to do that unless your system is not capable of encoding a long project due to resource problems. When you chop the pieces up and recode them, you're getting ridding of that problem when you do the final burn from NV.

To be sure, I suggest that you send an e-mail to tech support about the problem. Run the 'get support files" utility from nero.com, downloads, tools and attach the resulting nero support.cab file to your e-mail.

[hg-dude]

wither, you are completely wrong. Does somebody mention that there are signs of missing system ressources ? No, - the reason here for the problem (as typical !) was definitely the known lack of NV since Nero 10 (with introduction of rendering rep. keyframing), that NV is loosing control over VM in complexe rendering processes (for the preview !) like in this project.

The only and correct way (let's say standard method !) dealing with this problem from the beginning is what adriano2b has suggested (and I am suggesting too based on my experience) and iacobo has done finally, - split the sources for the project into parts of about 20 minutes, convert previous to editing each part to the target format of the medium (MEG-2 resp. MPEG-4) with Recode or exporting from a DVD project and than editing after import to the final project. For HD projects it's the only way for working properly, regardless wether or not rendering is required.

Of course also there may be problems possible with lacking availability of system ressources. Therefore the user should currently take care to the condition of the available free space for the VM (enough, not high fragmented).

As this problem is resp. should be known to Nero, it's not necessary that iacobo is wasting additional time with reproducing the problem for creating support.cab's.

This problem can only be solved by Nero with changing their rendering concept (similar to that of Adobe Premiere e.g.).

iacobo, I think you know that you can optimize the rendering prozess by activating Background Rendering.

Regards
hg

This post has been edited by hg-dude: Apr 24 2012, 12:31 PM

[wither]

I won't consider myself totally wrong unless you can get Nero AG to confess to the problems you mention. Of course that will never happen. Unfortunately, I don't want to take the time to try it myself.

I still think he should identify it to tech support. How else is this going to be fixed if it's a Nero issue?

[lacobo]

Can't be the resources. I have an I7 processor (4x 4 GHz), 16 GB of fast RAM, an SSD drive (not for the data, but all programs have a flying start) and a NVIDA GeForce GTX 560 Ti graphic card. After my project is finished I will notify Nero support. For now I'm happy. It's very handy that I split up the project. Editing a 10 minutes movie is much easier (compared to 100 minutes).

Bert.

[hg-dude]

wither, I am understanding you on a way. The Nero people should be "awakened" by a flood of emails. But as the experience in the past with similar threads show there is no reaction to expect from them. And i am sure they know meanwhile exactly the reasons for the problem. These are definitely not on the user side. I am confirming with iacobo completely from my own experience as I had this problem too (not only one times with complexe rendering similar to that shown in his first screenshot) and solved it on the same way like he (without any support, as conclusion from my own analysis) and on exactly the same way adriano2b has suggested based on his analisys. So there are in minimum 2 people confirming the correctness of the solution. Or do you know a better one ?

Of course, Nero need informations as much as possible. But to demand therefore from him, to reproduce the problem so that he can create the support.cab file, once again I find exaggerated. Remember, it would take hours for that. Time that he better can use. An email with the first screenshot and a short description of the problem and his system informations should suffice as fully.

iacobo, to be clear. Not the performance of the processors (I am working with a 1.6 dual core/1 GB RAM !! machine with satisfaction) but the availability of free space in a good condition for the VM is the criterium. Also with high performance machines you can have therefore this problem.

See #64726 for more information about problems with VM in NV

This post has been edited by hg-dude: Apr 25 2012, 09:21 AM

[wither]

I can't argue with the experiences of you and others. I base many of my responses on my experience, as well. I also can't give a better way of doing things because I don't have time to try and create the problem.

I'm not asking him to recreate the problem for tech support. His initial description and a reference to this thread should be adequate. The nerosupport.cab will just give tech support a picture of his system.

I think we're on the same page in most regards.

[hg-dude]

iacobo, would you please send this email to the TS asap. I think we all here are interested in the opinion/comment we should get from Nero because this issue should be completely clarified once.

Ty and Regards
hg

[hg-dude]

Any news on this thread ?

[lacobo]

In the end I have used Vegas Movie studio again to combine the 10 separate ~10 minute movies again to one 97 minute movie (and convert it to MPG2). Nero video kept making things go out of sync. Converting to MP4 and then to MPG simply removed to much details to be very useful. The 56 DVD's are burned now and I'm quite happy with the result.

To avoid troubles I will use Vegas Movie studio next time to edit the movie (although the learning-curve is quite a bit steeper). But, as promised, monday I will contact Nero Support to 'log a case' about this out-of-sync issue. To be continued...

BTW: It's LACOBO, not iacobo :rolleyes: