Fields-order bug

roma · Post by **roma** » Mon Sep 08, 2008 7:21 pm

Hello,

I think that you have Fields-problem by convert from AVCHD to DVD. The order of Fields in result-file be changed and if I look result-DVD on CRT-TV, I see badly picture.
I think you probably use Mainconcept Video Engine for your timeline and default your timeline be initialized always to Lower Field First. It is right for DV-file, and false for MPEG. Most MPEG-files have Upper Field First.

One AVCHD file for test you can get from http://rapidshare.com/files/143307272/monaco.m2ts.html

Sorry for my English.

Black Lab · Post by **Black Lab** » Mon Sep 08, 2008 8:01 pm

This is a user's forum, and is rarely visited by Corel employees. You should contact them via email to report this.

roma · Post by **roma** » Mon Sep 08, 2008 8:16 pm

Black Lab wrote:This is a user's forum, and is rarely visited by Corel employees. You should contact them via email to report this.

I wrote same report on web-form, but don't get any feedback ...
I think moderator's this Board have any contact to developers ...

Post by **Ken Berry** » Mon Sep 08, 2008 9:41 pm

Roma -- welcome to the forum!

There are a couple of things you need to be aware of, especially with AVCHD. First, you can change the default Field Order used in the project properties by going to File > Preferences > General. By default, on installation, I think it is set to Frame Based -- at least it was on mine. So if you know you are going to be capturing and editing a lot of AVCHD, then change the Field Order to Upper Field First.

Second, if you are capturing AVCHD and editing it in that format, then down-converting it to standard definition mpeg-2 for burning to a standard definition DVD, then it is not really the project properties that determine the final Field Order. It is the choice you make when you go to Share > Create Video File. Here, when I down-convert my own high definition files for burning a DVD, I always choose Share > Create Video File > Custom. That allows me to change any setting I like. And it is here that I make sure that the Field Order is Upper Field First.

When the mpeg-2 is made, you go to File > New Project. Don't worry about giving your new project a name. The objective is just to clear the timeline of your current project.

Once that is done, you select Share > Create Disc > DVD. The burning module will open. Use the Add Media button at the top to insert your new mpeg-2 in the burning timeline. Then go to the middle of the three icons in the bottom left of the burning screen. There is a little box beside the words 'Do not convert compliant mpeg files'. Make sure that box is ticked (it usually is by default). That way, your already compliant mpeg file will not be re-encoded and the Field Order will not be changed. Then build your menus and burn.

roma · Post by **roma** » Tue Sep 09, 2008 7:13 pm

Hello,

thanks for fast answer. But its don't work. I change Default Fileds Order in File > Preferences > General to Upper Filed First and in MPEG Properties for file conversion to Upper Filed First too. I made one DVD and have same problem: fields order is badly ...
If I look Project Properties i see for Edit file format: MPEG files, Lower Field First ...
Can you try make one DVD with my test-file and look it on CRT-TV with hardware player?

Thanks.

Post by **Ken Berry** » Tue Sep 09, 2008 11:01 pm

I have downloaded your file, but I am afraid I don't have time right now to burn it to a DVD... It plays back OK in WinDVD in its native format. However, both WinDVD and VS11.5+ show a couple of things which I find a little bit strange. Which brand and model camera are you using? I ask because I thought most AVCHD cameras used a bitrate of around 16,800 to 18,000 kbps. Yours shows a VBR max 11,800 kbps which is pretty low... Also, the audio seems only to be dual channel Dolby at 256 kbps, where I thought most AVCHD cameras use 5.1 channel Dolby at 384 kbps.

However, the field order is, as you know, correct at Upper Field First.

As a preliminary comments, I would note that that particular piece of video is never going to look good, whether played back on a computer monitor, a HDTV or CRT TV. That is because you have done a 360 degree horizontal pan in 30 seconds. With high definition that is about ten times too fast! In fact, with high definition video, you should try to avoid horizontal pans at all! This is because even a mild, slow pan in high definition produces a very obvious 'shimmer' and this becomes more pronounced the faster you move. With yours, it is just about unwatchable and physically hurts the eye!

Vertical pans are OK i.e. moving the camera up and down, and zoom in and zoom out are also OK. But not horizontal pans. If you watch a professional HD video, you will see that they almost never have horizontal pans, and when they do the camera moves verrrry slowly, and does not cover a wide range.

When I get time to experiment further with your video, I will report back...

roma · Post by **roma** » Wed Sep 10, 2008 6:32 pm

Hello,

thanks for help !!! I deleted DMF_TEMP-directory, changed Default Fileds Order in File > Preferences > General to Upper Filed First and created new project with Upper Filed First and in MPEG Properties for file conversion, made new DVD and its worked fine ...

I have Camcorder Panasonic SX5. Yes, bitrate 11800 Mbit is not more, but for interlaced movie 1920x1080(i) it is enough.

Thanks.

Post by **Ken Berry** » Wed Sep 10, 2008 9:23 pm

Yes, it might seem as though it is enough, and the quality is good. But there are a lot of AVCHD video cameras out there, including in the Panasonic range, which film in 1920 x 1080, and use the higher bitrates I mentioned. In fact, I think there is a new Panasonic just recently released, which has a maximum bitrate for AVCHD of 24000 kbps i.e. twice your bitrate.