Here are some considerations. I do quite a bit of video editing and conversions from VHS to digital. I'm going to generalize for you.
1. Source format (camcorder choice) for ultimate output to DVD TV set top DVD player. Keep in mind that no matter what source format you choose, the output format for use on set top TV DVD players will
always be MPEG-2 for standard definition video.
Standard definition video for DVD TV playback is ntsc 720x480. That is not what you get from a digital camera. You get 640x480 of highly compressed video. ( not to mention compression codec conflicts will torture you.)
2. How edit friendly is your source video format? The most practical format to use for trouble free editing is in fact MiniDV.
MiniDV video is formatted to the dv-avi ntsc 720x480 format. This is "FRAME ACCURATE" lightly compressed digital video. I'll explain 'frame accurate" in a second.
3. Backup storage and in field access to recordable media.
Do you want to save any of your footage. If so MiniDV once again is the perfect media. Do you concern yourself of running out of space on your camcorder while shooting? If so MiniDV is the perfect solution. Tape storage and tape changing are the best ways to archive your work without jumping through hoops.
Now, back to editing and the term I used "frame accurate". Here are some numbers.
Uncompressed (raw) full information digital video is about 65 gigabytes per hour.
Lightly compressed (frame accurate) MiniDV digital video is about 13 gigabytes per hour.
Highly compressed (GOP accurate) digital video is about 4 gigabytes per hour. This is the format used on hard drive camcorders. It is an MPEG format and a PRESENTATION FORMAT not an EDITING FORMAT.
Now that's not to say you can't edit mpeg video because you can. It just becomes more problematic and involved the more you want to edit.
No one ever that I've spoken to INITIALLY INTENDS to do much editing, but once they get involved, and learn the capabilities, that changes. Often times they are handcuffed by the MPEG format their camcorder produces.
Lightly compressed digital video is frame accurate. That means that while each frame has compressed digital information in it, each video frame is a complete frame unto itself.
Not so with MPEG highly compressed video. GOP compression (Group Of Pictures) is a compression method that takes information from ONE FRAME of video and so long as the scene doesn't change drastically OMITS that information on all subsequent frames of video within the group. That may be 15 to 20 frames of video before another full frame of video is compressed.
Here's where the MPEG editing becomes a problem. Say you want to make an edit at 01:22:12:09 Hrs, Mins, Secs, Frms. of your video. The ONE full frame of video information that feeds the 15 to 20 frames of compressed video is the only real frame with information. So to edit this one frame you want, your computer, your computer software and your system resources have to but up to the task of completely rebuilding this GOP.
Doesn't sound bad but if you are affecting 100 GOPs the process slows the computer down quite a bit if it isn't up to the task.
Next, of course since a compressed video is being modified, the output quality is affected since the compression type is "lossy" which means you change something you loose digital information.
Next problem that is commonly encountered with trying to edit MPEG formatted video is "field order". Standard definition video for TV is interleaved. Each frame is made up of two fields. An upper and a lower. MPEG editors commonly have issues with which field to display first. The resulting burned DVD when played on a TV displays very jittery.
Bottom line, any MPEG based camcorder is great for a quick shoot so long as you have no fear of filling up he hard drive in the field ( then you're SOL) and no real concerns ever for in depth editing. (by that I mean transitions, titles, special effects) and so on. Remember MPEG format is an output format not designed for editing.
Now for software. If you must use one of these hard drive camcorders, at least be sure you pick an editing program that supports "NATIVE" mpeg editing. What that means is the sofware will still have to decode and re-encode your edited GOPs, but it won't have to edit your entire clip.
Higher end video editing software usually will not support NATIVE mpeg video editing. It will edit mpegs but what it does is totally and completely decode you ENTIRE video even if you only want to edit one second of a 1 hour video. It will be forced to decode, and encode the whole video just to accommodate your one second edit.
I use Adobe Premiere Pro, but I would recommend to you the ULEAD Video Studio program. It supports native mpeg editing. Stay away from Pinnacle. No matter what you buy, its is always the best idea to try the demo on your system.
By the way it is true that to download video from a MiniDV camcorder to your PC you will need a Firewire port. The cards cost about 15 bucks on Newegg.com and plug into an open PCI slot on your computer. No software drivers are needed when you use WindowsXP so its no big deal.
USB based digital video transfers present another whole set of nighmare possibilities, so again. IMHO MiniDV, Firewire and Ulead, NICE trouble free work and built in automatic backups when you take the tape out.
