Quality Problems?

[ulf]

I have a Canon HV20.
The quality when viewing directly on a HD TV via HDMI is excellent.
I am using Ulead VideoStudio 11.5+ and the program is good, but there is one thing that is a slight problem.
If I
1) Shoot in HDV 1080, w/o progressive scan
2) Capure with VideoStudio 11.5+ in 1440x1080
3) Edit the video in VideoStudio 11.5+
4) Export the edited video back to my HV20 from VideoStudio 11.5+ in 1440x1080
At all steps above I have used highest quality.

I will notice a quality decrease on a HD TV when I compare the output result with the original video. I was expected exactly the same quality. Why? The effect is more visible when there is moving objects in the video.

The result is still rather good, but not excellent.

Is the rendering process introducing quality losses?
The problem also occurs when I do smart rendering.
Can I change the mpeg2 compression codec in VideoStudio?

[2Dogs]

Is the rendering process introducing quality losses?

Any re-encoding of the source video is likely to reduce picture quality, even if only slighlty, when you're dealing with a "lossy" format such as HDV.

The problem also occurs when I do smart rendering.

Now that is sad! Are you certain that Smart Render was enabled? This can usually be confirmed by the preview screen remaining blank whilst Smart Render proceeds, and you will also have the option to use the "MPEG Optimiser" when using the "Share>Create Video File" step.

Can I change the mpeg2 compression codec in VideoStudio?

I don't think you can.

You should recheck the source and output file properties, which should match. Not sure what field order your source 1080i footage will have, but if you inadvertently used the wrong field order in your output, it would certanily result in a drop in quality, especially for moving subjects. I believe your camcorder shoots at 25,000 kbps, which matches the normal miniDV data rate, so it's currently as good as it gets for consumer HD.

[DVDDoug]

...3) Edit the video in VideoStudio 11.5+

...The problem also occurs when I do smart rendering.

Depending on what kind of editing you did, Smart Render may have no effect. For example, if you apply a color-adjustment or contrast/brightness filter, etc. to the entire video, the entire video must be re-rendered.

If all you did was cut, splice, and add transitions, I have no explanation...

[Ken Berry]

Re 2Dogs comment: Field Order should be Upper Field First...