Video Camera to record badminton sessions?

I've been thinking of something similar, with a much cheaper camera model though. I guess the Sony model you referred to is a high-end consumer product.

I have had my first test runs and below is a list of some practical issues I noticed:

• with typical video camera optics the field of view is somewhat limited, I had to take the camera surprisingly far away from the court to get reasonable coverage. Actually there had to be one empty court in between.
• I was positively surprised with the standard slow-motion feature of the camera. I was thinking that it would be nice to grab more frames than 25 or 30 per second, but for my interests the camera performance was quite acceptable with the standard frame rate using a fast shutter speed.
• In my case, the editing of the video data should be as easy as possible. Preferably it should be compressed into some MPEG format on the fly, so that it can be easily distributed to my partners directly after the training session from a lap-top computer, for example.

I have the feeling that video recording will be a good approach to streamline my footwork and body coordination. It might even allow some sort of "remote coaching" where one can send video clips to a coach and ask for comments.

Most likely my next move will be to buy a USB device ($50?) that can encode the DV strem from the camera into a MPEG file on the fly. It will simplify things...

 

Looks hideously expensive, but great if you can afford it.

I bought a much cheaper (£300) camera, and I'm pleased with the results so far. You don't need ultra high frame rates, although they would be a nice luxury. Simply recording some games or training can give you surprising insights into how you really play.

 

I'm with Golum on this, a simple cheap camera is all you need, put the results on dvd and then play at reduced speed through the dvd player if you want slow motion replays. A Tripods a useful accessory to have when shooting footage.

 

Just asking:

a 'general' assertion is that NTSC is 30 frames per second and PAL is 25 frames per second (with higher resolution).

Is this true and does it apply to say PAL vs NTSC DV camcorders? So for badminton replays, is it better to get an NTSC model rather than a PAL model because NTSC has 30fps? (for slow mo replays).

I don't know the answer, anyone with the tech knowledge can share?

 

I don't think NTSC vs. PAL is relevant for most camcorders.

Typical consumer camcorders record onto DVD, hard disk, or mini DV formats (mini DV is the best, even though it sounds antiquated). You then plug it into your computer and it makes a movie file (say, .avi).

The movie specifications (resolution, frame rate, compression...) have nothing to do with TV broadcasting specifications. They are determined by the camera and the postprocessing software.

 

a PAL camcorder that I use, a Panasonic GS400 records at 720x576 at 24.97fps.

I understand that the equivalent GS400 NTSC version records at 720x480 at 30fps.

This is coincidentally, the same specificaton for NTSC and PAL DVDs.

The records specs can be easily viewed in windows media player for eg, can someone from USA with a NTSC DVCam play back one of their files and confirm that your output is 720x480 at 30fps?

 

Many thanks for the tip on the wide angle lens, Cheung! I think I will buy one as a Christmas present for myself.

 

[I do apologize, I am a bit slow in editing messages, already spent my 15mins]
Many thanks for the tip on the wide angle lens, Cheung! I think I will buy one as a Christmas present for myself.

And sorry that I could not express myself better on the MPEG stuff, the most likely reason being that I know little about computers and software...

Based on first experiments with my not-that-good-DV-camera I found that I must do some post processing on my computer. Basically I could achieve one of the two things: a huge file on my hard disk with not too much time spent or a slightly smaller file after a long postprocessing computation.

This made me to think that perhaps I need some kind of a hardware accelerator to give me more speed and options for compressing the video data. A recording DVD player could be also a good solution as suggested above.

Anyway, with today's technology all this seems to be an interesting thing to do. Years ago we did try this, but the sharing of the material was a bit difficult: VHS tapes were more expensive than CDs and it was hard work to produce copies of the material...

In our town it is difficult to find a badminton coach. So we thought that we should produce some video material, go through it with my partners, find some areas we should work on, choose some drills to improve our technique and repeat the video recording after one or two months. That would give us some indication of our progress.

And, if we are lucky enough to get a visiting coach, we would have some, hopefully interesting, video material to go through.

And one more thing: I have found BC as a great source of information, so many thanks to you all

 

or 2: get a DVD recorder that also has HDD (hard disk drive)
basic editing is pretty easy and quick

basic meaning setting chapter markers and then cutting and splicing the chapters.

If you want advanced editing then I guess you need to go the PC route.

 

If you already own a computer (with sufficient disk space, etc.), then mini DV may be a better choice than DVD or HDD.

Why?

Mini DV is higher quality (apparently -- look up some comparisons on the net) and definitely cheaper.

 

But is it only higher quality while it is still on the tape?
Once you transfer it to the computer don't you end up with the quality of whatever format you transfer it to?

 

Good question.

Obviously, the quality will be limited to the maximum quality of the output file.

The question is whether "quality" of miniDV is raw format specifications, or rather the fidelity of capturing an image from the lens.

My impression was that it was the latter, in which case the quality of miniDV would (or at least could) be relevant. Yet I could well be mistaken, having done minimal research.

 

It's been a while, but going from memory, miniDV is actually a compressed format, with a ratio of about 5:1 compared to raw data. It works out to be roughly 13GB per hour.

Editing DV footage and saving it back as DV would entail the least loss in quality. The loss in quality is very small, but it's still there. However, you wouldn't notice any change in quality unless you re-rendered the same scene a large number of times (more than 10?).

Rendering the scene in any other format (mpeg2, divx etc) will result in much greater loss in quality.

It's all relative, though. For training purposes, the practically of having the footage on an easy to access medium (such as DVD) outweighs the disadvantage of a what amounts to a negligible loss in quality.

Wayne Young

 

Here is a badminton match shot by Red with his DV Cam and reduced to a small file size:

http://www.badmintoncentral.com/forums/showthread.php?t=35889

 

MiniDV are a pain to transfer to the computer because you need to play and wait for the whole duration of the video.

If you REALLY do need HD, get the Xacti VPC HD1 from Sanyo... Hard disk is the way to go.
http://www.sanyo-dsc.com/english/products/vpc_hd1a/index.html