[quote="denver"]
In simple terms, the work goes like this:
1. Capture the camcorder output (svideo) with the O2 using mediarecorder.
2. Do a bit of simple editing: trim the ends of the clip and add a title using moviemaker.
3. Convert the clip to MPEG2 with mencoder (FreeBSD).
4. Create the DVD files using DVDStyler (FreeBSD).
5. Burn the DVD with growisofs (FreeBSD).
I originally thought I was going to need to capture uncompressed because I was going to edit the result. But after doing some experimenting, I don't see a clear advantage. Besides, although I have been able to get the O2 to do uncompressed captures, it's a little unpredictable: sometimes it works fine, sometimes not. Capturing with compression is easier. So I could probably do the capture with dmrecord instead of mediarecorder.
After doing some research, I've been capturing to a QuickTime file, using JPEG-A compression, with YCrCb 422 packing. I usually bump the quality up from 75% to 95%.
I save (Export As) the edited result to an AVI file, using SGI JPEG compression, again with YUV 422 packing.
The mencoder command I use is:
# 4:3
SCALE=720:480
mencoder -oac lavc -ovc lavc -of mpeg -mpegopts format=dvd -vf scale=$SCALE,\
harddup -srate 48000 -af lavcresample=48000 -lavcopts vcodec=mpeg2video:\
vrc_buf_size=1835:vrc_maxrate=9800:vbitrate=5000:keyint=18:acodec=ac3:\
abitrate=192:aspect=4/3 -ofps 30000/1001 \
-o outfile infile
[/quote]
Wow, this is great info! I've recently been looking to digitize our home videos. (If you follow MacSlash, or digital_video/video_geeks on LiveJournal, then you've seen my questions.) I've got a beige G3 with the A/V package, and an O2. I need to capture video into a format I can then (ideally) transfer to my G5 PowerMac to edit/burn with iMovie. It's also got to be relatively easy, as my wife (non-techie) will probably be doing most of this. If it's too complicated I'll get stuck doing the capturing at minimum.
I knew about mediarecorder from my googling, but know very little about using IRIX in general. Also, my O2 seems to be on the blink...I set it to boot to serial so I didn't need a monitor, but not it doesn't want to boot at all, and I haven't any way to get a serial console attached. So that's an additional hurdle right now. Fortunately, I think I have discovered a MacOS 9 solution for doing the capture.
The next "problem" is lack of drive space. My O2 only has 9 GB and the Mac 20 GB (on its HFS part - it runs Linux on the rest of the drive). How much video am I going to be able to capture before I have to dump it to the G5? Will I be able to capture full frame full motion video with compression, or will I have to go uncompressed? I probably won't know until I try it. My guess is the O2 might be more qualified to do compression on the fly.
In simple terms, the work goes like this:
1. Capture the camcorder output (svideo) with the O2 using mediarecorder.
2. Do a bit of simple editing: trim the ends of the clip and add a title using moviemaker.
3. Convert the clip to MPEG2 with mencoder (FreeBSD).
4. Create the DVD files using DVDStyler (FreeBSD).
5. Burn the DVD with growisofs (FreeBSD).
I originally thought I was going to need to capture uncompressed because I was going to edit the result. But after doing some experimenting, I don't see a clear advantage. Besides, although I have been able to get the O2 to do uncompressed captures, it's a little unpredictable: sometimes it works fine, sometimes not. Capturing with compression is easier. So I could probably do the capture with dmrecord instead of mediarecorder.
After doing some research, I've been capturing to a QuickTime file, using JPEG-A compression, with YCrCb 422 packing. I usually bump the quality up from 75% to 95%.
I save (Export As) the edited result to an AVI file, using SGI JPEG compression, again with YUV 422 packing.
The mencoder command I use is:
# 4:3
SCALE=720:480
mencoder -oac lavc -ovc lavc -of mpeg -mpegopts format=dvd -vf scale=$SCALE,\
harddup -srate 48000 -af lavcresample=48000 -lavcopts vcodec=mpeg2video:\
vrc_buf_size=1835:vrc_maxrate=9800:vbitrate=5000:keyint=18:acodec=ac3:\
abitrate=192:aspect=4/3 -ofps 30000/1001 \
-o outfile infile
[/quote]
Wow, this is great info! I've recently been looking to digitize our home videos. (If you follow MacSlash, or digital_video/video_geeks on LiveJournal, then you've seen my questions.) I've got a beige G3 with the A/V package, and an O2. I need to capture video into a format I can then (ideally) transfer to my G5 PowerMac to edit/burn with iMovie. It's also got to be relatively easy, as my wife (non-techie) will probably be doing most of this. If it's too complicated I'll get stuck doing the capturing at minimum.
I knew about mediarecorder from my googling, but know very little about using IRIX in general. Also, my O2 seems to be on the blink...I set it to boot to serial so I didn't need a monitor, but not it doesn't want to boot at all, and I haven't any way to get a serial console attached. So that's an additional hurdle right now. Fortunately, I think I have discovered a MacOS 9 solution for doing the capture.
The next "problem" is lack of drive space. My O2 only has 9 GB and the Mac 20 GB (on its HFS part - it runs Linux on the rest of the drive). How much video am I going to be able to capture before I have to dump it to the G5? Will I be able to capture full frame full motion video with compression, or will I have to go uncompressed? I probably won't know until I try it. My guess is the O2 might be more qualified to do compression on the fly.
IIRC, networking didn't work either.
I never figured I'd have to prioritize my upgrades by power requirements!