Increasing Bitrate for Encode resulting in horrible results

I've been migrating from Final Cut Studio to all the various Adobe alternatives and having an issue with Encore right now.
I've been successfully making DVDs and letting Encore automatically encode for me (As I often times end up making a BluRay as well of a project, this gives me the option of swapping out the footage and keeping the chapter markers intact). So far it's been working great and calculates things to within 20mb of utilizing all available disc space.
I'm having problems with my most recent project, however.
Initially it was going to be the standard warning video intro and a 1:45 video. Had everything encoded and it looked great (and the show video was 3.9GB). Then the client decided to add another 10 minute slideshow to things and everything...went downhill. Original encode still worked and fit on the disc, but in a moment of stupidity I thought it would be good to re-encode so I had everything fresh. And for some odd reason the show's size shrank from 3.9GB to 3.2GB, leaving over 500mb of unused space. It looked OK but I thought it would be good to reclaim the underutilized bitrate. And every effort to do so has resulted in really horrible lacing issue/jagged piano strings and lines footage on the DVD.
Not sure why given that all I've done is increase the Target Bitrate of the standard Transcode setting (NTSC DV 23.97 High Qulality 2 pass 4mb) from 4 to 5 mbps and the Pixel Aspect Ratio from Standard 4:3 to Widescreen 16:9 (thus increasing the Estimated File Size from 3212 to 3900)
The source clip is 720X480 (1.2121) 29.97fps, progressive
I've kept Field Order at "Automatic" (so think I'll try changing it to None (Progressive) in case it wasn't really doing it automatically).
Is there anything else? It's a pretty static concert one camera shot
Thanks for any help
Jonathan

That's what I'm afraid of I was hoping I was going to hear something like "the algorithn for bitrate doesn't like 5, try 4.8" or something like that..
I re-encoded as I noticed the default for Encore was 23.97 and as my footage is 29.97 (and output usually is 29.97 for DVD isn't it?) I wanted to see if it made a difference. And the answer is no...
Here is the preset I used:
Here is what came out (screen shot from playing via VLC):
And as a frame of reference, here's how it looks when I just let Encore do it's thing automatically:
I will try creating a new project and importing all the footage as fresh timelines, plus the main menu to access things, to see how an automatic encode changes via that workaround. Seems like an odd...bug? Lack of feature? not to be able to add things after one reaches a certain point in a project and having to start over from scratch (especially since I do a lot of tweaking of the menus by sending things back to Photoshop to get layout, highlights, etc just right and it's one of the features I love about Encore vs DVD Studio Pro or any other option I've looked at)

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Hello Oracle forum,
At the moment i have a Oracle database running and i'm specifically interested in the efficiency spatial extension for webmaps and GIS.
I've been testing the database with large shape files (400mb - 1gigabyte) loaded them into the database with shp2sdo->sql*loader.
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SELECT id FROM map WHERE id = 3 when I increase the amount of id's to 3-10000 the performance decreases drastically.
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SELECT id FROM map WHERE id >=3 and id <= 10000
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| 0 | SELECT STATEMENT | | 9828 | 49140 | 22 (0)| 00:00:01 |
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0 redo size
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655 SQL*Net roundtrips to/from client
0 sorts (memory)
0 sorts (disk)
9796 rows processed
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The query returns lots of results and this is I think the reason why my measured time of the query is large. The time it takes returning large amount of rows increases quickly for more rows.
. Can this be solved? The table has been analyzed before starting the query.
The parameters of the database are not really changed from standard, I increased the amount of memory used by Oracle 11g to 1+ gigabyte.
and let the database itself decide how it uses this memory.
The system specs are and db_parameters are:
Oracle 11G
Memory Processor # of CPUs OS OS Version OS B
1.99 gb Intel(R) Core(TM)2 CPU 6600 @ 2.40GHz 2 Microsoft WindowsXP 5.2600
0=Oracle decides which value will be given
cursor_sharing EXACT
cursor_space_for_time FALSE
db_block_size 8192
db_recovery_file_dest_size 2147483648
diagnostic_dest C:\DBBENCHMARK\ORACLE
dispatchers (PROTOCOL=TCP) (SERVICE=gistestXDB)
hash_area_size 131072
log_buffer 5656576
memory_max_target 1115684864
memory_target 1048576000
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parallel_max_servers 20
pga_aggregate_target 0
processes 150
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other=8mb
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Edited by: user12227964 on 25-jan-2010 4:53
Edited by: user12227964 on 26-jan-2010 2:20

Sand wrote:
select count(id) , resulted in 3669015 counted id's.
The database counted 18,345,075 rows per second without binded variables , which is ten times slower as your result. This can be possible because of hardware but my question is specifically about the number of rows returned thus large amount of results. The idea was not to compare the speed of "+select count(*)+" statements - but to illustrate that even when dealing with a huge number of rows, one can decrease the amount of I/O that needs to be performed to deal with that number of rows.
Select id from map where id <= 1
4000 rows per second are selected, Rows/sec is a meaningless measurement - due to physical I/O (PIO) versus logical I/O (LIO). You can select a 100 rows and these require PIO. Resulting in an elapsed time of 1 sec. You can select a 1000 rows that require only LIO. With an an elapsed time of 0.5 sec.
Is the 2nd method better or faster? No. It simply needed less time to be spend on I/O as the data blocks were in the buffer cache (memory) and did not require very slow and expensive disk access.
Another database i testes returns 6 times 25425 rows back per second for the same query (100 ids). What could be a parameter that limits the output speed of multiple rows in a query?.Every single row that needs to be read/processed by a SQL statement has a cost associated with it. This cost is not consistent! It differs depending on how that row can reached - what I/O paths are available to find that rows? Does the full table need to be scanned? Does an index need to be scanned? Is there a unique index that can be used? Is the table partitioned and can partitioning pruning be applied and local partition indexes used? Are there are user functions that need to be applied to the row's data? Etc. Etc.
All these together determine how fast the client gets a row from the cursor executing that SQL.
The more rows you want to process, the bigger the increase in the cost/expense - specifically more I/O. As I/O is the biggest expense (slowest ito elapsed time).
So you want to do as little I/O as possible and read as little data as possible. For example, instead of a full table scan, a fast full index scan. For example, instead of reading the complete contents of a 10GB table, reading the complete contents of a 12MB index for that table.
I suggest that you read the Oracle Performance Guide to familiarise yourself with basic performance concepts. Use http://tahiti.oracle.com for finding the the guide for your applicable Oracle version.

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lime-iMacG3 wrote:
… since you can't tell iMovie to export the DV file as DV and use a smaller bitrate than the bitrate in the project, … I want to keep as much of the old bitrate as possible.
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