glenn
New Member
Posts: 2
|
Post by glenn on Jul 18, 2006 14:03:07 GMT -5
Hi All Newbie forum member so please be easy on me!! I got me a hd1 a couple of months ago and have shot loads of video in all resolutions and formats, and played straight onto the tv from the camera are excellent. However when i try to do any kind of video editing using any software ( ulead,nero 6.6 or pinnicle) the output video is jerky. I have spoken many times to Sanyo technical who have gone back and forth to Japan and come up with these 3 reasons convertion from hi def to standard def......loss of quality convertion from 30 to 25 frames/second.......loss of quality convertion from mpeg4 to mpeg 2.......loss of quality Now it just seems strange that no-one on this forum has mentioned this....or even seem to have this problem, even though Sanyo have admitted this problem claiming technology has not caught up with the hd1's features, ie blue ray for burning hd discs. The only ray of light was a friend has a divx dvd player who claimed divx was actually mpeg4 however a dvd with raw video striaght from the camera would not play. I think it needs authoring as a divx dvd to play but which software converts mpeg4 to divx??. I'm sure there is a brilliant camera in here waiting to burst out. I have a small clip (3 Megs ) shot in 640x480 30 fps that i just cannot get to render and not be jerky. I'll be very gratefull if anyone could see if they can render it to dvd. Give me a buzz and i'll email it to you. Thanx in advance Glenn Mitchell
|
|
|
Post by rmj on Jul 19, 2006 3:24:30 GMT -5
Hi Glenn, I have similar problem when using the supplied video software to render the video into a DVD. It takes ages and when playing the DVD on a normal DVD player or the PC it's jerky and this is from video taken with a C4! I have put it down to my old pc (I have been told that MP4 is very resource hungry to edit in). When I open the task manager the CPU is maxed out at 100% all the time when rendering using Ulead, if I convert the MP4 files to use a different editing software to make a DVD, that does not use 100% CPU when rendering the created disc plays fine. You don't say what spec you pc is but it could be something similar, have a look at the stickied thread entitled what software to use, mpeg2avi is popular for converting files to other formats first, J
|
|
|
Post by manmikey on Jul 21, 2006 14:13:11 GMT -5
glenn,
I initially found my C5 movies i had burned to DVD to be jerky too (in particular panning shots) the cure for me was to encode them in NTSC not PAL (an option on Nero and Ulead) as I had been doing. PAL is 25fps and NTSC is 30fps (so I'm told), the Xacti records at 30fps so it follows that when encoding to PAL you have to drop 5fps from the original recording hence the jerkyness. It worked for me all my movies are smooth, all modern DVD and TVs can automatically detect and play NTSC content.
|
|
|
Post by ANtonio on Sept 29, 2006 18:48:22 GMT -5
Anybody have a new solution? I have same problem... Jerky... when make a DVD with Ulead! Thanks
|
|
|
Post by leslie on Sept 30, 2006 19:06:46 GMT -5
Try reading the recommended software to use thread. Most issues are resolved in there!
|
|
|
Post by Antonio on Oct 1, 2006 17:04:16 GMT -5
I am reading... only solution I think and work... is make NTSC DVD... but my problem is I need PAL DVD! I can't see solution for convert 30fps to 25fps without jerky in movie with some speed. Thanks
|
|
|
Post by accordguy on Oct 20, 2006 8:56:00 GMT -5
It's not possible. Advanced frame rate conversion software used by studios can try to mask the effect of jerkyness but don't always succeed. They can try to interpolate the frames in fast motion scenes but that tends to make the footage look fuzzy.
The change from 30fps to 25fps is not easy as it is not a simple division like throwing away every other frame (30fps to 15fps). MP4cam2avi will convert the container file format from Apple MP4 to Divx AVI without losing quality because it just changes the way the data is packaged without recompressing the video or audio. Copy the Divx AVI file to a CD or DVD and play on a Divx capable DVD player. You may *still* see jerky images if the DVD player tries to frame rate convert the video for PAL25 output.
The only way to see non-jerky video is by watching it as 30fps video (either Divx or converted to NTSC DVD). Even then you may see some judder compared to "proper" video because I think the Sanyo records progressive video at 30 frames per second and "proper" video is recorded at 60 FIELDS per second so the motion looks much smoother (but freeze frames are poor quality).
The difference between a frame and a field is a subtle one but it was designed to lower analogue bandwith requirements for TV broadcast and smooth apparent motion.
Motion film suffers from the same judder as the Sanyo clips because it is recorded at 24 frames per second. They don't frame rate convert US films for showing on UK TV either. They just play the 24fps film at the faster 25fps rate. There's not much difference in speed and most people never notice the the film is playing a bit faster. They *would* notice the severe judder that would be introduced by trying to frame rate convert it. If you get a US DVD and a UK DVD of the same film you will notice the UK version plays for a couple of minutes shorter than the US one and the music is about a semi-tone higher in pitch.
If you need good quality PAL25 video, you have to use a PAL25 camera, like a DV camcorder. The Sanyo cameras are for the computer and US/Japan markets. On computer displays the frame rate isn't important and the US and Japan use 30fps TV systems.
The Sanyo also can look more juddery because it uses fast shutter speeds to do its auto exposure because it has a limited aperture range on its lens. Film and video cameras usually use slow shutter speeds (like 1/50th sec) to blur the motion and so smooth it out. The Sanyo often records clips at a fast shutter speed of less than 1/200th. This gives you clear still frames but can look jerky when moving quickly as there is no motion blur to fool the brain into thinking that it is a seeing a real moving image rather than a bunch of still photos shown in quick succession.
|
|
|
Post by Antonio on Oct 31, 2006 20:14:30 GMT -5
accordguy
Thanks. I think you are right!
|
|
|
Post by Kolver on Nov 23, 2006 0:10:47 GMT -5
If you are a mac user then you should have no problems using imovie HD and iDVD for simple dvd creation. Additionally when exporting to another source using quicktime pro I haven't had any problems. Overall I still think the quality from this camera is way better than firewire transfer from a mini DV tape camcorder which often turns out grainy and takes however long the footage is to send to the computer.
|
|
|
Post by bYRNONOY on Nov 25, 2006 19:58:59 GMT -5
Vegas 6d can do it for you. Just set the output to PAL 25fps and you will have a non-jerky result from the HD1. Done it myself months back when I first bought cam.
|
|
|
Post by Antonio on Dec 5, 2006 8:21:35 GMT -5
But I think Vegas (ver.7) don't works with mp4 Xacti format! Works?
Thanks
|
|
glenn
New Member
Posts: 2
|
Post by glenn on Dec 12, 2006 19:39:46 GMT -5
Hi All Original thread poster here!! Am i to understand that i paid £799 for a camera that shoots jerky video and the main reason is we in the uk have a 25 fps tv system and the camera shoots in 30 fps which is a US and Japanese, and there is NO software to correct this. If thats the case Sanyo have ripped me off by selling me a camera which simply will not work on our shores. I am now in contact with at least 6 people in the UK with this problem. Sanyo must have sold hundreds of units in the Uk , how come this site is not festooned in complaints. I wonder if its just a few cameras involved and Sanyo have 'done' something to later cameras to correct the problems.
I have spoken to Sanyo tech support many times and they seem to think i'm the only person with this problem, and there camera is not to blame. I would be interested to here of anyone else with this problem, and approach Sanyo with a list of people with the same problems.
Glenn
|
|
|
Post by Antonio on Dec 13, 2006 20:00:47 GMT -5
I'm from POrtugal... PAL too! I think this problem is for all... Now I try Vegad 6.d and works well... can convert 30 to 25 fps! But version 7 not handle mp4 Xacti fles!!! But in a small teste anyway I think video lost some quality... lost some frames... I will try more to check...
|
|
|
Post by leslie on Dec 17, 2006 7:55:06 GMT -5
I thought you could switch the camera to either 25 or 30fps on the settings menu?
Mine seems to work fine in either mode - I get no jerkiness!
Which Xacti models do you have?
|
|
|
Post by Antonio on Dec 17, 2006 18:26:24 GMT -5
Mine is Xacti C6 and don't have option to chande fps... What models have this option?
Regards
|
|