Audio out of sync

[lata]

I do not have X 8 installed , X 9 shows 12 profiles, 4 being SD sizes, the rest are HD

If your original Video File s are Mpeg2 then you should be using those properties to create a new video file.
The show Messages would have matched your project to the video files, then you can use Same as Project Settings

If the original video files are Mpeg2 then why do you render those again, you seem to be rendering individual clips????
You should add the originals to the timeline to edit, removing any unwanted frames / footage.

You will eventually end up with a project containing all good video, then you can Share to create the final output using Same as Project Settings
I do not understand why you render individual clips?

There should be no problems in converting the Interlaced video to progressive aka Frame Based
Where the project contains both then Frame Based should be used.

[Weeination]

That must be my problem then, rendering individual clips. I should start over again and as you say "add the originals to the timeline to edit, removing any unwanted frames / footage".

[Weeination]

The reason why I was rendering individual clips is because if you don't then you need to keep the originals to link them up to the project after importing them. For some DVDs I only need a chapter but for others the part I want falls between chapters so i need to import the entire disc. To keep so many full DVDs or just chapters for a project this size I need to free up for hard drive space.

With that in mind, should I free up more hard drive space and if that's still not enough then get a bigger hard drive before I proceed with this project? It's either that or continue to render individual clips after I do my editing into MPEG-2 and then delete the original imported files when done to make room for more imports.

The only other option is to break up the project into parts which I'd rather not do.

What do you recommend?

[lata]

How many DVD are you using, how long are the recordings video,
One hour of Video is approx 4 Gb.

Using Video Studio...... There is an option to render clips that uses the same properties as the original.
After trimming your video, select a clip, go to File-Save Trimmed Video, this will create a new video file saved to the working folder, a thumbnail placed in the library. Replace the source clip.

At least you will be working with Mpeg2 to complete the project to render first to mpeg2, then convert to other formats should you wish to do that.

It is not something we would normally, please make sure there is no audio issue is within the originals.

And yes I would work with smaller projects, 20 minutes or so.

[Weeination]

One DVD for every clip. Sometimes I need to keep the whole DVD and sometimes I just need to keep a chapter. it depends on if the part I want falls between chapters. I just cleared over 100 GB on my hard drive. I'll see if that is enough room or if I need to clear more room.

I rendered 15 individual clips in MPEG-2 for what I had been doing. Would you recommend that I don't use those clips for this new project and just start entirely from the beginning again (save for my title screens which I am using from a copy of the original project which I renamed and deleted all the video clips)?

Should I just start a new project from the very beginning and not even use the title screens from the original project?

[Weeination]

I have started over from the very beginning and won't use any of the files which I rendered previously. I started a completely new project as I found out that I can just copy and paste the title text from the original project onto the new project.

[lata]

You should be able to drag the original titles to the library to create copies, they can be used in the new project, simply drag from library to title track.

keep checking the progress.......
Periodically I would render the project Share - Same as Project Settings
Insert the new clip to an empty overlay track, this should match the existing project, play to listen to audio, they should be in sync
Switch to Sound Mixer to view and compare the wave forms.

[Weeination]

First off, I captured four of the first five clips again so that the frame rate matched the DVDs at 29.97 and the audio bit rate matches at 256 kbps.

The project is set to mobile. Rendering an MPEG-4 video file with Same as Project Settings it is out of sync when played on VLC.

Using the MPEG-4 Optimizer MPEG-4 AVC (720 x 480, 30p, 2.5 Mbps) the audio and video are out of sync on VLC but they are in sync on Windows Films and TV and Media Player.

Rendering an MPEG-2 video file the audio and video are in sync regardless of the player used.

Then I changed the project format to DVD and rendered a video file with Same as Project Settings and it was also in sync.

All the video files that I mentioned above play in sync when played on X8. However, for the files rendered to MPEG-4, when you pick a point in the latter part of the videos to play, it jumps ahead to another part first before playing. In the first half of the 129-minute video that does not happen. The further ahead you click on the video, the more it jumps ahead to another part.

However, the problem with the audio being briefly muted for a half second to a second at the beginning of some clips in the rendered video files is still there. There is also a new issue. On some of the clips, audio can still be heard on the black screen I placed after the clips for about a second. This is audio which is part of the video that I had previously edited out within the project. Some of the clips were back-to-back, so you can hear the audio continue into the next clip for a moment where it should end after the video ends and the next one begins. Therefore, I decided to place a black screen between every clip, but the audio that should not be there just spills over into the black screen for about a second.

For the widescreen clip six with these properties…

Video Type: VP8 Video
Attributes: 12 bits, 640 x 360
Frame Rate: 29.97 frames/sec
Data Rate: -266 KBps (it looks like a minus sign in front of the number 266)
Audio: Ogg Vorbis
Attributes: 44100 Hz, 16 Bit Stereo
Bit rate: Nothing indicated

I split the audio and added the audio from two other copies of that clip that have in 4:3 for a better match.

The first one has MPEG Layer 3 audio, 192 kBit/s, 48,000 Hz, Stereo
The second one has Dolby Digital, 48,000 Hz, 384 kbps

The briefly muted audio and audio spilling over issues were still there. Early on in my editing for this latest project, I stopped when I reached near the 20-minute mark of video which brought me to video clip 8 (the second clip sourced from a DVD) and rendered a video file. Even at that point, the one second or so of audio which should not be there (with part of the video that was edited out) still could be heard after the video clip ends and the black screen begins.

[Weeination]

One other thing. I did not use Save Trimmed Video. All clips used in the project are from the imported files.

[lata]

If the videos have been imported from a DVD Disc they should be Mpeg2 720 x 480
How did you import the video from DVD, did you use Video Studio to do that.
Are you able to use Video Studio to import the files.

Start a new project
Go to F6 Preferences – General tab – Project – tick Show messages.

Right click the timelines for Insert Digital Media, some info here….
http://lata.me.uk/corel/importdvd/dvd.htm

As they are Mpeg2 then your project properties should be set to DVD Mpeg2 to match the video properties.
why are you using Mobile Mpeg4 for the project properties when you said “Rendering an MPEG-2 video file the audio and video are in sync regardless of the player used.”

[Weeination]

Yes the videos imported from DVDs are MPEG-2. They are mostly 704 x 480. These are the ones recorded by Panasonic recorders. The last 8 videos imported from DVDs are 720 x 480 from a Toshiba recorder. I probably doesn't matter, but the video I am importing is from VIDEO_TS folders, not the DVDs themselves. The DVDs have all been backed up onto an external hard drive by copying the VIDEO_TS folders. Then I simply copied the ones I am using for the project onto my computer's internal hard drive. Three of the DVD files are image files which needed to be converted to VIDEO_TS to allow me to import them.

For this first five clips, one was also from a DVD and I captured the other four as MPEG-2. The only clip which is not MPEG-2 is clip six which I gave the properties for.

I already had Show Messages ticked in Preferences.

The only reason why I used Mobile MPEG-4 is because I am not going to make a DVD.

So I always need to keep the project properties to match the video properties. Got it.

To import I went to the Capture tab and clicked on Import from Digital Media. From your link, I used the Using Video Studio to Import Digital Media method.

You said to start a new project and right click on the timeline and select Import Digital Media using the Import Video Files from DVD option. Isn't that just a different way of doing the same thing?

Are you saying to start all over again for a third time using that option? I would have to delete all of the videos I imported using Video Studio. The same files that were copied over from the external hard drive. Then get out the actual DVDs to Import Video Files from DVD. Then start my editing again from the beginning to work with the exact same video files that I have already been working with In other words, the files copied from the DVDs and stored onto the external hard drive.

Given that I would be using the exact same video files, I can't see that preventing the audio issues I have mentioned. I am referring to the audio being muted for a second at the beginning on some clips or carrying over when it shouldn't into the black screen when the video that accompanied that audio was edited out in the project.

[asik1]

As I wrote you before,
why don't you split the project to 3-4 shorter parts?
Many years ago when I had audio "things" I solved it that way just to get done and continue.
and I made sure all audio sampling is 48k.

[lata]

I am saying that I would set the project properties as Mpeg2, edit the project, when complete render the project to Mpeg2, play to check quality and audio sync.
Then if you need a mp4 video convert the video file from mpeg2 to mpeg4.

[Weeination]

As I said before, even at the 20-minute mark with only 8 clips, I stopped my editing and rendered a video file. The audio which should not be there, based on my editing, appears for about a second when the black screen appears, after the last clip I had in the project at that time.

I set my project properties to DVD. Then for clip six, instead of the 16:9 copy I have with these properties

Video Type: VP8 Video
Attributes: 12 bits, 640 x 360
Frame Rate: 29.97 frames/sec
Data Rate: -266 KBps (it looks like a minus sign in front of the number 266)
Audio: Ogg Vorbis
Attributes: 44100 Hz, 16 Bit Stereo
Bit rate: Nothing indicated

I imported from a DVD a 4:3 copy with these properties.

Video Type: Mpeg-2 Video, Upper Field First
Attributes: 12 bits, 640 x 360
Frame Rate: 29.97 frames/sec
Data Rate: Variable (Max. 6500 kbps)
Audio: Dolby Digital
Attributes: 48000 Hz, 16 Bit Stereo
Bit rate: 384 kbps

Therefore, all of the clips (first four of five screen captures and the remainder from DVDs) are all MPEG-2. The audio on every clip is 48Hz.

I rendered a video file with Same as Project Settings.

Same result. Yes the video is in sync, but the audio muting and spillover problem is still there. As I said before, it only happens on some of the clips. I am guessing that the same thing will happen as I previously described in my Audio Briefly Muted topic. If I add more time to the clips where the audio is muted or shorten the clips where the audio spills over, then in turn other clips not currently affected will likely be affected in a similar manner.

[Weeination]

So I already did all of my editing and I initially had the Project Properties set to Mobile. When I simply switched the properties over to DVD, wouldn't that give me the same result as starting a new project, selecting the project format to DVD from the very beginning and then start the editing?

The only other project format options I see are DV/AVI, HDV, AVCHD, Blu-ray and Online.