Lots of confusion here. From the top...
> I want to be able to high-speed dub these to one disc, but it's saying there isn't enough room on the disc for all three. <
No, there's not. Brajesh's response was correct about your essentially recording them in XP mode (1 hour in FR mode is close to XP mode). So the 2:09 you've currently got would fill 2 discs (almost 9 gigs of content).
> So I'd likely have to drop down to the 3rd setting (4 hours per disc) to get 2:09 worth of material to high-speed dub on one disc? Seeing as the 2:09 eclipses the 2-hour allotment allowed by SP mode. Is that correct? <
PatsWonSB's suggestion for FR mode recording should work fine, and you probably don't need as big a safety margin as suggested. And your idea to "overrecord" then trim the excess should work too.
> I recorded 6 half hour shows at SP, edited the commercials, then tried to high speed dub but got the same message, not enough space on disc. The total was 126 minutes. <
That's very strange. There should be no problem at all with 2:06 at SP mode on to a fresh disc. When you were in the dubbing screen, what did it show as the capacity of your blank disc (mine was 4411 MB)?
I've been burning all my recent DVD-Rs with 2:09 or 2:10 (one at 2:11), except when things are shorter and I'm too lazy to find extra to pad it out. I always have space left over at 2:09. There is a small amount of variation in the MB required for a given amount of time, but not a lot. All my current source material came from Dishnet, which is pretty heavily compressed already. Perhaps if I were doing OTA, cable, or real satellite (C/Ku-band) my results might differ. My content has been working out to ~34 MB/minute, or 4.5 Mbit/sec (average).
> So it looks like it will strictly enforce the 2-hour limit. Was hoping there'd be some wiggle room. <
Nope. I can guarantee there IS significant wiggle-room, unless my machine is different from all the rest (extremely unlikely). All it cares about is that is HAS to fit everything into 4411 MB (on my machine/discs, YMMV). With the material I've been recording, with compatible mode On and Hybrid-VBR disabled, SP mode recordings can fit at least 2:09 in that space.
If your content was recorded a bit higher, I could see that you might not hav an extra 9-10 minutes, but there'd be some extra room. When bad1550 couldn't fit 2:06 on his disc, I'd wonder what the MB requirements were? Probably just slightly over 4411 MB.
> Someone in another thread seemed pretty sure you could go 2:09-2:10. <
That was me, and I'm not pretty sure, I'm positive. I've got a stack of at least 6 discs here with 2:09-2:11 on them.
> You can do this in FR mode, not SP mode. <
No, that's incorrect. It works fine in SP mode, though I'm sure with some effort, FR mode could also be used. I'd just be concerned that FR mode might be smart enough (dynamic enough) to notice that its projected burn rate wasn't using as much space as expected, and bump it up, thus using more than the fixed SP mode would. I'd only use FR mode if I wasn't already going to come close to 2:08-2:10 usage. Like if I had to fit 2:15.
He also indicated:
> Actually, you can get approx 2:15-2:20 of FR recordings before a drop in resolution occurs. <
That's correct, but a little misleading. FR mode won't drop down into the next lower resolution range until you exceed that time, but your PQ will be slightly reduced as you go beyond 2:00. Pushing it to 2:20 is an almost 20% decrease in the bit-rate, which could be noticably detrimental to PQ.
> are you saying that you will get better results with the VBR set to "Fixed" for FR recordings? If that is the case, are you sacrificing something else (such as record time)? <
Yes, and yes. Setting hybrid-VBR to auto will get more time into any destination you record to. To accomplish this, two things will happen: one is that the PQ will sporadically go down. Theoretically, you shouldn't notice this, since it's only supposed to happen when it's masked. But there's no guarantee. The second thing is that you'll lose any ability to predict how much time you've got, or any particular recording will consume.
> Tim...please help <
Geez, this whole thread materialized in the last 40 hours. I'm not always able to check in several times a day. ;) Now, I need to sleep, and hope I didn't mess up any details.