I am editing a movie which has a number of clips. What I'm seeing is some random changes in the aspect ratio from 4.3 to 16.0 on the clip in the preview window. I can't say for sure, but t don't believe that all of the clips do this.
What's crazy about this is that at one point the aspect ration of a clip is 4.3. However, if I move to a neighboring clip it may be 16.9. Then if I return to the prior clip (that was 4.3), it may be 16.9. There is no rhyme or reason to how any of the clips behave.
Since it may come up, I have verified that my default aspet ratio is 4.3. Even checking a errant clip in Project Properties, , it is also 4.3.
Any ideas about what's happening here folks?
Preview Aspect Ratio
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mitchell65
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No idea at the moment but any answer can only be a guess without more deatils. First we need the source of your clips and how you imported them to you PC. Then the properties, for this right click on a clip in the library of timeline and click Properties. Type in ALL the details and post here. Do this with at least three different clips! Then we need to know what versiuon of VS you are using and any other detail you can find. The more detailed the info you supply the more help you will get. Things like "Have you got smart render on or off?" If you are using VS x2 have you got Preview in High Quality checked? and so on.
John Mitchell
We all make mistakes, that's why pencils have erasers on the end!
We all make mistakes, that's why pencils have erasers on the end!
Thanks for replying John.
I believe I'm narrowing down the culprit here. In checking back though my work flow, it appears the aspect ratio was some how being changed during the capture. But let me answer some of your questions first.
I captured from a Mini DV camcorder to my HDD via Fire Wire. Using "Scene Detection" in VS 11.5 Plus, I manually started the scan> let it capture the amount of time I wanted> then clicked "Stop scanning". To get more segments, I would re-start the scan from "Current position", capture, etc. as above. Doing so, I was able to divide 90 minutes of video into five - 10 minute segments which were later "Split" by Frame Content.
What I found in the raw capture files is that some of these segments (clips) are in 4.3 while others are in 16.3 AR. The clip properties confirm this. This appears to explain the "what" but not the "how/why" this happened.
Obviously, the preview is showing a true presentation of the image AR. My first impression that the preview was randomly changing the AR was inaccurate.
Checking Preferences, I see that "Image Resampling" is set to "Keep Aspect Ratio". Perhaps this should be set to "Fit To Project Size"? I don't see a Smart Rendering option to check off. Where would it be?
I believe I'm narrowing down the culprit here. In checking back though my work flow, it appears the aspect ratio was some how being changed during the capture. But let me answer some of your questions first.
I captured from a Mini DV camcorder to my HDD via Fire Wire. Using "Scene Detection" in VS 11.5 Plus, I manually started the scan> let it capture the amount of time I wanted> then clicked "Stop scanning". To get more segments, I would re-start the scan from "Current position", capture, etc. as above. Doing so, I was able to divide 90 minutes of video into five - 10 minute segments which were later "Split" by Frame Content.
What I found in the raw capture files is that some of these segments (clips) are in 4.3 while others are in 16.3 AR. The clip properties confirm this. This appears to explain the "what" but not the "how/why" this happened.
Obviously, the preview is showing a true presentation of the image AR. My first impression that the preview was randomly changing the AR was inaccurate.
Checking Preferences, I see that "Image Resampling" is set to "Keep Aspect Ratio". Perhaps this should be set to "Fit To Project Size"? I don't see a Smart Rendering option to check off. Where would it be?
Best regards, Richard
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mitchell65
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I don't use the Mini DV system so I'm not the best person to assist you. Many members, I know do use the system and not doubt one of them will pick this up shortly. The only question I would ask is are you sure all the clips on the camera were shot at the same AR?
John Mitchell
We all make mistakes, that's why pencils have erasers on the end!
We all make mistakes, that's why pencils have erasers on the end!
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Trevor Andrew
DV capture
Hi rckowal
What process are you using to capture your video.?
When you capture you mentioned Scene Detection I think of the DV to DVD Wizard.
When we capture from a Mini DV type camera we connect using firewire.
We select DV as the capture format.
This process transfers the data from the camera to the pc without re-coding.
What you have in the camera is what you get on the pc.
If you have 4:3 then that is what you get, if your video has been shot in 16:9 then you capture widescreen.
As John mentioned.....If the tape has been recorded in both formats 4:3 and 16:9 then you could have problems.
OK
Connect the camera directly to your TV and play it, what format do you see.? Does it change from 16:9 to 4:3?
What process are you using to capture the video, are you using the Wizard?????????
Most users use the Video Editor to capture there video.
Read my quick guide to DV-AVI from the link below.
What process are you using to capture your video.?
When you capture you mentioned Scene Detection I think of the DV to DVD Wizard.
When we capture from a Mini DV type camera we connect using firewire.
We select DV as the capture format.
This process transfers the data from the camera to the pc without re-coding.
What you have in the camera is what you get on the pc.
If you have 4:3 then that is what you get, if your video has been shot in 16:9 then you capture widescreen.
As John mentioned.....If the tape has been recorded in both formats 4:3 and 16:9 then you could have problems.
OK
Connect the camera directly to your TV and play it, what format do you see.? Does it change from 16:9 to 4:3?
What process are you using to capture the video, are you using the Wizard?????????
Most users use the Video Editor to capture there video.
Read my quick guide to DV-AVI from the link below.
Yes John, I am sure that all clips were shot at the same AR. I just played back a capture of the tape that is stored on HDD. The entire video was 4.3.mitchell65 wrote:I don't use the Mini DV system so I'm not the best person to assist you. Many members, I know do use the system and not doubt one of them will pick this up shortly. The only question I would ask is are you sure all the clips on the camera were shot at the same AR?
Best regards, Richard
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Black Lab
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This sounds like the same exact problem.
http://forum.corel.com/EN/viewtopic.php?t=37089
http://forum.corel.com/EN/viewtopic.php?t=37089
Jeff
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Dentler's Dog Training, LLC
http://www.dentlersdogtraining.com
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Hi Trevor, thanks for replying.
Although I said I used Scene Detection, that was an error. I did not use the DV to DVD Wizard or the Movie Wizard.
I actually used the very same process that you described with a bit of a twist. When the video was captured, I used the "Start/Stop Scan" button to break the 90 minute into several parts (by subject matter).
As mentioned to John, I am certain the video was all shot in 4.3. I have also played the original video tape - it is all in 4.3 as well. Then I played the Project itself in VS. Initially, it's 4.3 then about half way through, it changes to 16.9. From memory, the point where it changes to 16.9 seems to coincide with a manual "Stop/Start Scan" break done during the capture.
Although I said I used Scene Detection, that was an error. I did not use the DV to DVD Wizard or the Movie Wizard.
I actually used the very same process that you described with a bit of a twist. When the video was captured, I used the "Start/Stop Scan" button to break the 90 minute into several parts (by subject matter).
As mentioned to John, I am certain the video was all shot in 4.3. I have also played the original video tape - it is all in 4.3 as well. Then I played the Project itself in VS. Initially, it's 4.3 then about half way through, it changes to 16.9. From memory, the point where it changes to 16.9 seems to coincide with a manual "Stop/Start Scan" break done during the capture.
Best regards, Richard
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Trevor Andrew
Slipt by Scene
Hi
If there is an aspect ratio problem with the Mini DV tape, which does seem a bit unusual, it may be best to try a capture using Split by Scene option.
This will create a separate video file/clip for each scene. It will use the aspect that is sees for each scene. A strange comment I know.
Ok I'll try to explain.
You say that the camera used the same aspect ratio for all recordings.
If not when you capture VS uses the initial frame to set the aspect ratio for all capture, even if the aspect has changed during recordings.
But if you use Split By Scene, each scene will be captured using the first frame ratio, If you end up with 4:3 and 16:9 clips then the tape is the problem.
Normally you would get the same aspect ratio for all captured clips. Your expecting 4:3
Right click each clip in the timeline and select properties to check the aspect ratio, although viewing in the preview screen will show the different aspects.
It may be worth testing this capture, at least it will rule out the tape.
You can set the capture duration by changing the digital clock to say 15 minutes.
I find the camera runs on a while after capture, my old Canon with the earlier VS9 stopped exactly on the last captured frame.
Give Split by Scene a go.
If there is an aspect ratio problem with the Mini DV tape, which does seem a bit unusual, it may be best to try a capture using Split by Scene option.
This will create a separate video file/clip for each scene. It will use the aspect that is sees for each scene. A strange comment I know.
Ok I'll try to explain.
You say that the camera used the same aspect ratio for all recordings.
If not when you capture VS uses the initial frame to set the aspect ratio for all capture, even if the aspect has changed during recordings.
But if you use Split By Scene, each scene will be captured using the first frame ratio, If you end up with 4:3 and 16:9 clips then the tape is the problem.
Normally you would get the same aspect ratio for all captured clips. Your expecting 4:3
Right click each clip in the timeline and select properties to check the aspect ratio, although viewing in the preview screen will show the different aspects.
It may be worth testing this capture, at least it will rule out the tape.
You can set the capture duration by changing the digital clock to say 15 minutes.
I find the camera runs on a while after capture, my old Canon with the earlier VS9 stopped exactly on the last captured frame.
Give Split by Scene a go.
Trevor, I tried capturing from the camcorder via Firewire, etc. using Split-By-Scene as you suggested. It fails to capture. I get the pop-up message "Capturing failed. The file created is corrupted & unusable. It will be automatically eliminated"! I also tried the same with "S-B-S" off (unticked) & got the same result.
Some thing similar & related was already discussed in my earlier post http://forum.corel.com/EN/viewtopic.php?p=192440#192440 - which by the way you also replied to. Although I worked with the same video in that case, it was captured previously then stored on my HDD as an AVI.
As mentioned in the earlier post, the video on the camcorder tape was previously passed through from an analogue camcorder.
This is repetitive: If I try the S-B-S test using the avi. stored on the hard drive, it splits & stores to a file OK - so long as I use "frame Content". If I use DV Time Scan, I get only one large file with no splits that stores OK. I get the same results when I do a WinDV capture direct from the Camcorder to HDD via Firewire.
Some thing similar & related was already discussed in my earlier post http://forum.corel.com/EN/viewtopic.php?p=192440#192440 - which by the way you also replied to. Although I worked with the same video in that case, it was captured previously then stored on my HDD as an AVI.
As mentioned in the earlier post, the video on the camcorder tape was previously passed through from an analogue camcorder.
This is repetitive: If I try the S-B-S test using the avi. stored on the hard drive, it splits & stores to a file OK - so long as I use "frame Content". If I use DV Time Scan, I get only one large file with no splits that stores OK. I get the same results when I do a WinDV capture direct from the Camcorder to HDD via Firewire.
Best regards, Richard
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Brain Champagne
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Try playing the tape for a second, then capture. So it's not capturing starting with the first frame.
I've discovered that tapes that a pro videographer makes for me, when I capture them using my camera (not his) don't always work right-- leads to the same error you got when you tried to capture scene-by-scene. When I capture not the first frame but a second or two in, it seems to work.
Last tape he made, I had him play the tape for a few seconds and start recording after some blank tape at the beginning, and that seemed to help.
I've discovered that tapes that a pro videographer makes for me, when I capture them using my camera (not his) don't always work right-- leads to the same error you got when you tried to capture scene-by-scene. When I capture not the first frame but a second or two in, it seems to work.
Last tape he made, I had him play the tape for a few seconds and start recording after some blank tape at the beginning, and that seemed to help.
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Trevor Andrew
Hi
Just to add to Brains suggestion to advance the tape prior to capture, I Thought Split by Scene would have overcome this, hence my suggestion to use this option.
If from Preferences-Capture Tab you select Press OK to Capture. The tape will pre-role until you hit the OK. Allowing you to advance the tape before starting capture.
Just to add to Brains suggestion to advance the tape prior to capture, I Thought Split by Scene would have overcome this, hence my suggestion to use this option.
If from Preferences-Capture Tab you select Press OK to Capture. The tape will pre-role until you hit the OK. Allowing you to advance the tape before starting capture.