Hi,
When i originally viewed the test video you postedmy settings weren't set correctly for de-interlacing.
After telling my software to de-interlace the club looks much better.
If you have smart-rendered this video out then it's pretty much the same as a file copy.
I'm curious if your computer equipment is capable of HD viewing as you also mention other things such as the background fence.
Do you have a HD Certified video card in your computer & also using PowerDvd7 or WinDvd8 to play this video?
What I see may actually be the original footage from the camcorder, not sure.
I had this problem when I was first capturing & playing back HighDef video on my computer. Finally learned through other techs here you need hardware accelleration to playback properly. Otherwise you will see exactly what you are seeing.
Changed field order but still jagged edges!
Moderator: Ken Berry
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ron s
The camera/camera-man at fault?
Sorry to bring this thread back from the dead but I finally got round to looking at this problem.
I was capturing today and realised that this liny effect was on a lot of my footage. Basically anywhere with a strong line in the picture that wasn't horizontal or vertical has an albeit subtle jaggedness to it.
So I hooked up the Sony HVR-A1E direct to the television and played guitar in front of it (some of my videos are guitar tuition and the horizontal line problem shows up very well with strings).
The problem is there. When I hold the guitar still it isn't there but as soon as I move the guitar the liny problem starts. As though the string has been chopped in half very finely.
I made a youtube vid a while back and it sort of shows this problem (the quality is pretty bad in itself but if you can see past that the issue is there. More obviously at the headstock end where you can see the strings clearly, it shows up more on the wound (thicker) strings.
http://www.youtube.com/watch?v=H9NYkXL56cs
Now I realise this is no longer a Ulead problem but I hoped there might be someone here who had experience with HD cameras who might be able to offer any solutions on this problem (settings etc) I tried changing the shutter speed which made no difference. This is an expensive camcorder so I hope it's just that I'm using it incorrectly!
Thanks in advance
Ron
I was capturing today and realised that this liny effect was on a lot of my footage. Basically anywhere with a strong line in the picture that wasn't horizontal or vertical has an albeit subtle jaggedness to it.
So I hooked up the Sony HVR-A1E direct to the television and played guitar in front of it (some of my videos are guitar tuition and the horizontal line problem shows up very well with strings).
The problem is there. When I hold the guitar still it isn't there but as soon as I move the guitar the liny problem starts. As though the string has been chopped in half very finely.
I made a youtube vid a while back and it sort of shows this problem (the quality is pretty bad in itself but if you can see past that the issue is there. More obviously at the headstock end where you can see the strings clearly, it shows up more on the wound (thicker) strings.
http://www.youtube.com/watch?v=H9NYkXL56cs
Now I realise this is no longer a Ulead problem but I hoped there might be someone here who had experience with HD cameras who might be able to offer any solutions on this problem (settings etc) I tried changing the shutter speed which made no difference. This is an expensive camcorder so I hope it's just that I'm using it incorrectly!
Thanks in advance
Ron
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Black Lab
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The following is an excerpt from Wikipedia:
Interlaced video is designed to be captured, transmitted or stored and displayed in the same interlaced format. Because each frame of interlaced video is composed of two fields that are captured at different moments in time, interlaced video frames will exhibit motion artifacts if the recorded objects are moving faster enough to be in different positions when each individual field is captured. These artifacts may be more visible when interlaced video is displayed at a slower speed than it was captured or when still frames are presented.
Because modern computer video displays are progressive scan systems, interlaced video will have visible artifacts when it is displayed on computer systems. Computer systems are frequently used to edit video and this disparity between computer video display systems and television signal formats means that the video content being edited cannot be viewed properly unless separate video display hardware is utilized.
To minimize the artifacts caused by interlaced video display on a progressive scan monitor, a process called deinterlacing can be utilized. This process is not perfect, and it generally results in a lower resolution, particularly in areas with objects in motion. Deinterlacing systems are integrated into progressive scan television displays in order to provide the best possible picture quality for interlaced video signals.
Interlace introduces a potential problem called interline twitter. This aliasing effect only shows up under certain circumstances, when the subject being shot contains vertical detail that approaches the horizontal resolution of the video format. For instance, a person on television wearing a shirt with fine dark and light stripes may appear on a video monitor as if the stripes on the shirt are "twittering". Television professionals are trained to avoid wearing clothing with fine striped patterns to avoid this problem. High-end video cameras or Computer Generated Imagery systems apply a low-pass filter to the vertical resolution of the signal in order to prevent possible problems with interline twitter.
Interlaced video is designed to be captured, transmitted or stored and displayed in the same interlaced format. Because each frame of interlaced video is composed of two fields that are captured at different moments in time, interlaced video frames will exhibit motion artifacts if the recorded objects are moving faster enough to be in different positions when each individual field is captured. These artifacts may be more visible when interlaced video is displayed at a slower speed than it was captured or when still frames are presented.
Because modern computer video displays are progressive scan systems, interlaced video will have visible artifacts when it is displayed on computer systems. Computer systems are frequently used to edit video and this disparity between computer video display systems and television signal formats means that the video content being edited cannot be viewed properly unless separate video display hardware is utilized.
To minimize the artifacts caused by interlaced video display on a progressive scan monitor, a process called deinterlacing can be utilized. This process is not perfect, and it generally results in a lower resolution, particularly in areas with objects in motion. Deinterlacing systems are integrated into progressive scan television displays in order to provide the best possible picture quality for interlaced video signals.
Interlace introduces a potential problem called interline twitter. This aliasing effect only shows up under certain circumstances, when the subject being shot contains vertical detail that approaches the horizontal resolution of the video format. For instance, a person on television wearing a shirt with fine dark and light stripes may appear on a video monitor as if the stripes on the shirt are "twittering". Television professionals are trained to avoid wearing clothing with fine striped patterns to avoid this problem. High-end video cameras or Computer Generated Imagery systems apply a low-pass filter to the vertical resolution of the signal in order to prevent possible problems with interline twitter.
Jeff
Dentler's Dog Training, LLC
http://www.dentlersdogtraining.com
http://www.facebook.com/dentlersdogtraining
Dentler's Dog Training, LLC
http://www.dentlersdogtraining.com
http://www.facebook.com/dentlersdogtraining
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ron s
I don't think need a new cam until you do more research. The HVR-A1E is a HighDefintion Camcorder.
That camcorder records in a few different formats & modes.
I'm not sure how your recording, capturing, what kind of HDTV your previewing on or what.
Because your using a semi-pro camcorder (HVR-A1E), I suspect there is something else wrong here. The A1E have different choices for recordings? I read where it can record in various modes, 1080i & 720p.
I've found the above reference to interlaced versus progressive is one of the most mis-interpreted topics in the video field. The article is technically correct but HDTV's are designed to correct many of these issues, computer screens (frame_based/progressive) are NOT designed to correct these issues and it's up to software/hardware settings to perform the corrections. This mis-understanding mis-leads persons into thinking they must de-interlace their 1080i videos to playback on HDTV's, no true.
This was one write-up on this cam:
I think maybe your in the wrong forum and need to find out more about your cam on the other semi-pro forums.
Only a guess buy it sounds to me like your recording in a progressive mode on the cam, maybe in 720p or you have the "Cineframe 25" activated.
VideoStudio works with the cam if recorded at 1440x1080i (interlaced), "Cineframe 25 = OFF"
After looking at the specs of the A1E & watching the short golf swing video (slow swinging of the golf club), this must be something related to the cams internal settings & options for recording.
According to what I read the cam does 1080i/720p/576p/576i output.
So what are your settings on the component connection to your HDTV? Also what mode(s) are you recording in. I think it would help you a lot to converse with others that own the same cam on another forums.
That camcorder records in a few different formats & modes.
I'm not sure how your recording, capturing, what kind of HDTV your previewing on or what.
Because your using a semi-pro camcorder (HVR-A1E), I suspect there is something else wrong here. The A1E have different choices for recordings? I read where it can record in various modes, 1080i & 720p.
I've found the above reference to interlaced versus progressive is one of the most mis-interpreted topics in the video field. The article is technically correct but HDTV's are designed to correct many of these issues, computer screens (frame_based/progressive) are NOT designed to correct these issues and it's up to software/hardware settings to perform the corrections. This mis-understanding mis-leads persons into thinking they must de-interlace their 1080i videos to playback on HDTV's, no true.
This was one write-up on this cam:
This is another feature incorportated into the A1E: "Cineframe 25 & Cinematone Gamma, As well as the HVR-Z1E camcorder, the HVR-A1E provides Cineframe mode (25 frames) and 2-mode Cinematone Gamma, in order to meet requirements to make images cinematic and film-like look".High-definition video camera records in 1080i, 720p, and 720i specification with analog down-converting. it has 16:9 widescreen recording and is 4:3 conversion capable. it comes with a Carl Zeiss Vario-Sonnar T* 10x optical zoom lens, digital Super SteadyShot System which dampens hand jitter and vibration, CMOS camera system. also it records to conventional DV tape stock. What are the waknesses? I could not find any flaws..
I think maybe your in the wrong forum and need to find out more about your cam on the other semi-pro forums.
Only a guess buy it sounds to me like your recording in a progressive mode on the cam, maybe in 720p or you have the "Cineframe 25" activated.
VideoStudio works with the cam if recorded at 1440x1080i (interlaced), "Cineframe 25 = OFF"
After looking at the specs of the A1E & watching the short golf swing video (slow swinging of the golf club), this must be something related to the cams internal settings & options for recording.
According to what I read the cam does 1080i/720p/576p/576i output.
So what are your settings on the component connection to your HDTV? Also what mode(s) are you recording in. I think it would help you a lot to converse with others that own the same cam on another forums.
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ron s
Thanks for the responses, all have been really helpful.
One thing I should say though is that you have mentioned about what mode I am recording in etc, but this problem presents itself without recording/capturing anything.
If I simply plug the HVR (and an old Sony DCR-TRV238E) into the tele (it's not a HDTV monitor btw) I can recreate this twitter by using it in record mode (without recording anything) pointing it at myself playing guitar. I'm purely using the HVR as a medium to get the picture on the tele.
The camera is not in the cinematone settings or the cineframe 25 setting.
Thanks again, I'm now off to google a HVR forum with hopefully some success. I'll report back if I find something worthwhile to share.
Ron
One thing I should say though is that you have mentioned about what mode I am recording in etc, but this problem presents itself without recording/capturing anything.
If I simply plug the HVR (and an old Sony DCR-TRV238E) into the tele (it's not a HDTV monitor btw) I can recreate this twitter by using it in record mode (without recording anything) pointing it at myself playing guitar. I'm purely using the HVR as a medium to get the picture on the tele.
The camera is not in the cinematone settings or the cineframe 25 setting.
Thanks again, I'm now off to google a HVR forum with hopefully some success. I'll report back if I find something worthwhile to share.
Ron
You need to connect the cam to a HDTV at 1440x1080i to judge to real signal.
Sending the downcoverted signal to a SD Monitor via the composite connector what your seeing is probably normal due to the high quality of your source video.
If you could connect the same using the same method as your doing, but only to a TV that can internally convert the signal to progressive scan the annoying lines would disappear. Also I'm sure that if you connected the cam to a HDTV and actually displayed the 1440x1080i signal on the HDTV you wouldn't see this annoying artifact.
That cam has so many built in options.
Sending the downcoverted signal to a SD Monitor via the composite connector what your seeing is probably normal due to the high quality of your source video.
If you could connect the same using the same method as your doing, but only to a TV that can internally convert the signal to progressive scan the annoying lines would disappear. Also I'm sure that if you connected the cam to a HDTV and actually displayed the 1440x1080i signal on the HDTV you wouldn't see this annoying artifact.
That cam has so many built in options.