Audio/Video Not Synching With ISO or DVD-Folders Only

[oka]

I may not have a "robust computer" but I wonder why I have audio/video synchronization issue whenever I create a ISO or DVD-Folder. I am used to creating ISO files with VS11+ and no problems. Now, with HD videos and DVDMF7SE, I import video, edit, write the HD video to a file (tried MPEG and AVI), played them and both would play well with the audio/video synchronized. No problem. But with the same vide, I created ISO & DVD-Folders, none of them would have audio/video to synch.

Why do I want to create a ISO or DVD-Folder? To test the final project before burning on disk. In the past I have wasted disks by finding edit issues. Now, I use Lightscribe or Labalflask disk - don't want to waste them. Also, the SmartProxy is NOT enabled.

[Ken Berry]

I import video, edit, write the HD video to a file

Can you please clarify if you do the above in X3 or MF 7 SE? If it is in X3, have you produced a DVD-compatible mpeg-2?

[oka]

For one, I don't use VSX3 anymore. I just keep to DVDMF7SE for all my video work.

One thing I did not mention (if it matters) is that the original video is at 1920x1080. Is it possible to keep to that ratio for a standard DVD video? I have gone as far as converting the video to a lesser quality then import to DVDMF7SE, still the ISO or the DVD-Folder would make an unsynch video. Simply, my goal is going from a HD video to a standard video (still keeping the 1920x1080 ratio).

I must be missing a very important step.

[Ron P.]

1920x1080 is not within the Standard Definition DVD specs. Anything larger than 720 x 480 is HD. Now another thing that causes confusion is the wide-screen aspect ratio for Standard Def video, for NTSC. 720 x 480 is a wide-screen ratio, you just need to be sure that you set your project settings to 16:9, AND make sure that non-square pixel rendering is checked.

You mentioning that you don't have a robust enough computer, and the frame size for your video, leads me to believe you're working with AVCHD. If so it's a bit more tricky to work with. Ken Berry has numerous posts concerning AVCHD. I don't have any experience with those file types yet, so hopefully Ken will jump back in here and provide some insight into this.

[oka]

I am learning so much. Now an important issue – the scenario.

I have a 1920x1080 flat television with HDMI source. My captured video is HD, in 1920x1080 (16:9). I need to create a video for family members who have standard television 720x480 and one member has a television with 16:9 capability. So my goal here is to create one video image to copy to standard DVD disk for everyone. Ron, your point here is, it has to be 720x480 (for standard definition). If so, then, I don’t have a choice.

All along, I thought I could create a video disk, in standard definition, in wide screen (16:9) so that the video will “fill” the screen, though it will not be in High Definition. I guess not!

I forgot an important question. With my HD video, and HD TV, I guess I cannot write a standard disk for viewing since I don't have a Blue-Ray system. Surprised I cannot write any video on a standard disk to play and watch on my television.

So am having the un-synching because I am writing a HD file to a standard image file? I used a converter to convert the video to standard video, though I configured the setting to be 1920x1080.

I hope am not confusing you all to much on my goal.

[Ken Berry]

As Ron says, a standard definition NTSC video DVD *must* have a format of 720 x 480 (or a number of smaller frame sizes). That is the international standard, and so you simply cannot have a playable DVD which uses a frame size bigger than that. BUT as Ron also said, 720 x 480 can be set to be either 4:3 or 16:9. The latter is produced technically by using rectangular (i.e. non-square) pixels, whereas 4:3 uses square pixels. But in practice, in MF 7 (SE or Pro), it is simplified by simply choosing 16:9 aspect in the Project Settings icon (second from left in the bottom of the MF screen). And if you choose 16:9 as the output, then it will indeed play full screen on standard def TVs which are wide screen, but will have black borders above and below on TVs which are not widescreen.

That being said, there is no logical reason why a DVD-compatible mpeg-2 produced in, say, VS X3 or earlier versions, should not burn to DVD in MF 7 without any sync problem. If others were experiencing this problem, we would be deluged with questions, but we are not. I personally make standard definition DVDs from high def videos (in PAL format) for the many family and friends who, like you, simply don't have either a HDTV or a Blu-Ray player... And I use MF 7 to burn those discs, which come out with no out-of-sync problems, as I am sure do many other users. Can you confirm that when you have used such an mpeg-2, that you have made sure the box in the same Project Settings icon (second from left) has the box 'Do not convert compliant MPEG files' ticked? Otherwise, it starts to sound as though the mpeg-2 you used was being re-rendered in MF 7, which is when the out-of-sync problem would arise.

Otherwise, if you are simply inserting your original AVCHD 1920 x 1080 video clips directly into MF 7 SE, it could be that your computer just doesn't have sufficient grunt to be able to keep up with converting the very demanding AVCHD format as part of the wider (and already complicated enough) burning process in MF 7, to standard def mpeg-2 without the sync error arising...

FWIW, you can in fact burn your original AVCHD as is to a standard DVD using MF 7. You first choose New Project > Blu-Ray on the first screen, then change that to AVCHD in the same icon as above on the second screen. But that will produce a Blu-Ray type folder on the standard DVD disc. At top quality settings (bitrate of 18 Mbps), that will only allow about 20 minutes to be burned to a single layer DVD, but the quality is exactly the same as the high definition original video. The downside is that you require a Blu-Ray player to read and play such hybrid discs.

[selliott]

I also have a problem with the Audio/Video not syncing when producing ISO files in DVD MovieFactory 7SE.

The problem does NOT occur when I supply an MPG file I have first converted to the standard DVD format in Video Studio - with the default data rate of 8000. If I supply a standard DVD format MPG file to MovieFactory and have "Do not convert compliant MPEG files" checked the sync issue does not occur.

If for any reason MovieFactory has to convert the file changing the data rate in the process, the sync issue seems to almost always appear for me.

I might also add I see this issue with 4:3 formatted files. I do not recall it happening with 16:9 formatted files.