Compression rate advice

I need to export a compressed file from FCP, that runs at just over 1hr, to iDVD via iMOVIE. (I haven't got my head around DVD Studio Pro yet!) What is the advised compression rate for this transfer? I usually use DVD PAL but it's too big and requires a dual-layer disc. I'm sure there is a different, more popular, choice of compression that I can use. The files will need to be able to stand alone and be importable into iMOVIE so that I can create a an iDVD project. Any ideas?

Make a QT Movie, not self contained, then drag the
file into iDVD. You dont need to use iMovie unless
there is something in there you want that FCP doesn't
offer... (Can't think of what that might be though.)
Thansk for replying. Before I do that - will a QT movie recognise chapter markers? I want to break it down in a scene selection menu.

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InfoCube design- partition of chararcters over IC - compression rate etc

Hello,
prerequiste for aggregation in an IC is that technical key is identical. technical key is formed of all DIM IDs and
those in turn are formed by characters in appropriate dimension. That means all characters of all dimensions form up the
technical key. So I have to organize an appropriate set of characters in an IC to get max. compression rate. That
partitioingn may result in to many InfoCubes if I consider semantic or project aspects. On the other hand aggregates are also
a means for realizing compression. Could you support me with guidelines for that or support me with links for this
subject.
Thanks in advance
Oskar

Arun,
thanks for your answer but I think I must change my misleading question to get the answer I want to have
Assumption :
1) InfoCube A has dimension d1 with characters ch1 and ch2 and dimension d2 has character ch3 and
ch4.
2) If ch1 and ch2 and ch3 and ch4 are identical standard aggregation is done ex. sum
Lets say thats what I want to have as aggregation level and which I get If I compress table F to table E
Til now I used an IC with 4 chararcters in 2 dimensions. Now I assume that I have additional 20 characters which
I didn´t organize in Cubes but they are semantical belonging to characters used in InfoCube A. If I pack them in Cube A
may be I destroy that aggregatio level I want to have ( because now all 24 characters must be identical for case of
aggregation ) . But if I organize them in seperate ICs may be I get to much ICs.
How would you solve that modelling ? Would you for example pack all characters into one IC and solve necessary aggregation level with aggregates , because they allow to use a subset of characters in the underlaying cube ?
Thanks in advance
Regards,
Oskar

BR0083W Compression rates out of date - run BRBACKUP with option '-k only'

Hi,
I am getting backup warning in offline backup. i am attaching error log.
BR0280I BRBACKUP time stamp: 2009-09-21 14.41.55
BR0319I Control file copy created: /oracle/KBP/sapbackup/cntrlKBP.dbf 9388032
BR0083W Compression rates out of date - run BRBACKUP with option '-k only'
OS = IBM AIX
DB = oracle 10g
kindly do the needful
kvl

Dear KulandaivelS,
Try this command.
"brbackup -k only"
Also check this [Link|http://help.sap.com/saphelp_45b/helpdata/EN/0d/d30b734a0c11d182b80000e829fbfe/content.htm]
Regards,
Bhavik G. Shroff
Edited by: Bhavik G. Shroff on Sep 21, 2009 2:39 PM
Edited by: Bhavik G. Shroff on Sep 21, 2009 2:44 PM

Compression Rate, does Photoshop count it out for me while saving for web?

Just as the title says. Is it possible to see the compression rate of your image?
Thanks!

If you are think something similar to how zip or 7 shows the compression while it is working, no it does not.

Possible to CONVERT CLIPS in order to match COMPRESSION rates?

I'm working with a sequence that has mismatched compression rates for my source material....
75% of my material is 8-bit uncompressed, that's also my sequence setting....however, I've had to import other material that's not 8-bit and, of course, requires rendering in the sequence...
Any way to convert this new material to 8-bit (or any other compression) that will allow me to use it in my sequence without rendering?
I think I know the answer, hoping that maybe someone out there has found a work-around.
Thanks in advance,
Mark

Thanks, StudioX....
I was able to convert it to 8-bit using my Compressor.....I don't have QT pro....
Dang thing's taking so long to convert (it's a 90:00 film), that it's almost worth just rendering the clips I'll end up using rather than doing the entire film....
It doesn't usually occur to me that I have to go outside the fcp application to tweek files....
Thanks again....
Mark

Lower Compression Rates & Dropped Frames

Frames keep on droppin' and FCE keeps telling me to lower the compression rate (among other things I've already taken care of, so I'm guessing this is the problem). But 1) I have no idea where to do this and 2) I have no idea what to change the rate to.
Halp?

How do I do what? Copy the material onto another drive? You need another drive. Select all the material on the drive. Drag it to the other drive. To erase and reformat the drive you use Disk Utility. It's on your system hard drive. The first panel will have a tab for erasing.

Compression Rate = Quality... Rule of Thmb?

Are there any rules of thumb for compression rates and resulting quality? For instance, I've heard 5Mbps is the bottom end for "as good as commercial movie DVDs". I guess measures that describe "quality" are subjective or varied... but terms that are significant to me are things like "Movie DVD's" "Betacam" "VHS" "no perceptable loss, even in motion scenes".
I often need to decide if a client will need one or two disks, based on the proposed amount of footage, before production. I make a rough bit-budget ahead of time. So, if the bit-budget calls for a 4.2 bit rate and that is too ugly for what I think my client needs, then I'll need to go to 2 disks. So, knowing in advance the bit rate -to- quality relationship would be very helpful.
Let's say the constants are:
Decent DV footage, let's say "average" screen action
Edited on FCP
Compressed with Compressor-2, Constant Bit Rate, to Mpeg-2
Thanks, Ralph
Desktop G4 / 1.5 G / Mac OS X (10.3.6)
Desktop G4 / 1.5 G / Mac OS X (10.3.6)

Not really. A lot comes down to what you see on screen when you try a few test encodes. Higher data rates don't always equate to higher quality - particularly at the upper end of the scale... can you see a difference between 8MBPS and 9.4MBPS, for example?
The fact is that it is only through experience that you get to know what tends to look good for the material you have got... therefore encode lots of things and see how it turns out!
Quite often the client will demand a single disc set, for example. Your experience will tell you that their 4 hour sport video won't look very good and so you have to have that conversation with them. No matter how good the source footage is, when you reduce the bitrate too far to get a file that fits the disc they want the quality will suffer - but you can turn to MPEG1, half D1, etc to help get them to replication, of course.
In general, the middle of the bit rate scale will be a good enough place to start. If you have really clean source footage then a software encoder like Compressor might do the job alright, but a better encoder, such as BitVice, MegaPEG.X, Canopus Procoder will do a better job with the same bit rates. A hardware encoder like the sonic SD2000 might give a different result again, whilst Cinemacraft could be set up to run a multi-pass VBR encode over a period of several days and squeeze every last drop of quality out of the footage.
There are simply too many variables involved, and I'd be sceptical of a 'one size fits all' approach, I'm afraid.
5MBPS for 'as good as commercial DVDs' is nonsense in this context. 5MBPS on really clean betacam source footage run through an SD2000 is a dream compared to 5MBPS on noisy, poorly lit mini-DV put through Compressor... it's unwise to make generalisations, IMO.

Audio compression rate

Hi,
is there a way to change the audio compression rate on my Ipod? Bass and treble sound very distorted when connected to my home stereo amplifier.
Many thanks
acer aspire 3500 Windows XP

Distortion can be caused by several things -
1) Simply overloading the input to your hi-fi or by a high data compression rate or a combination of the two. Check the input sensitivity rating of the socket you are using for the iPod on your hi-fi is around the 1 volt level (RMS). If is much less than 1V (say 300mV or less), even a lowish volume setting on the iPod could cause distortion, at least in the bass. Input overload from high bass levels can cause clipping distortion that can blow speaker tweeters (not the woofers) and sound terrible. Also, file compression at less than 128kbps causes progressively more disagreeable distortion right across the audio bandwidth.
2) Downloaded files are sometimes highly compressed (less than 68kbps) and are not worth playing from any half-decent hi-fi. Also, avoid ripping CD's at less than 128kbps if you want to play back through your hi-fi. Preferably, use a bigger bit rate than 128kbps. iTunes material should be fine, at least for the non-audiophile, as it's AAC files are not too highly compressed.
3) If you use the Sound Enhancer (iTunes preferences) or an iPod Equalizer Preset, you could push the overall output toward overload for the hi-fi input.
Happy listening.
iPod 5G video 30GB

Compression rates out of date

Hello,
We did an Online Backup in our system. The backup was a success with message:
BR0053I BRBACKUP completed successfully with warnings
Since there is a warning, i checked the log and found out about this message:
BR0083W Compression rates out of date - run BRBACKUP with option '-k only
i want to know how to correct this and what was the cause of the error?
Thanks and regards,
Gelyne'

Hi Siddhesh,
Eventhough the warning can be ignored, still i need to eliminate the warnings present in my logs. Actually, i executed the ffg to update the compression rate of the server:
brbackup -u / -t online -k only -c
Unfortunately, during the process, there's an error again that occured:
#FILE..... /oracle/EQ0/sapdata2/sr3_7/sr3.data7 4.9887:1 420379201
BR0280I BRBACKUP time stamp: 2007-02-03 22.44.30
BR0063I 34 of 42 files processed - 73240.266 MB of 87249.773 MB done
BR0204I Percentage done: 83.94%, estimated end time: 23:50
BR0001I ******************************************________
BR0201I Compressing /oracle/EQ0/origlogA/cntrl/cntrlEQ0.dbf
BR0278E Command output of 'LANG=C compress -c /oracle/EQ0/origlogA/cntrl/cntrlEQ0.dbf | /usr/sap/EQ0/SYS/exe/run/brtools -f getcompr -':/oracle/EQ0/origlogA/cntrl/cntrlEQ0.dbf: Invalid argument
BR0280I BRBACKUP time stamp: 2007-02-03 22.44.30
BR0279E Return code from 'LANG=C compress -c /oracle/EQ0/origlogA/cntrl/cntrlEQ0.dbf | /usr/sap/EQ0/SYS/exe/run/brtools -f getcompr -': 5
BR0224E Compressing /oracle/EQ0/origlogA/cntrl/cntrlEQ0.dbf to BRTOOLS failed due to previous errors
BR0115I Compression rate for all files 4.7555:1
BR0056I End of database backup: bdunmzdh.cmb 2007-02-03 23.09.19
BR0280I BRBACKUP time stamp: 2007-02-03 23.09.20
BR0054I BRBACKUP terminated with errors
Please help.
Thanks and regards,
Gelyne

Zero quality loss compression rates

Hi. This my first post. Thanks to all who have posted so far, very helpful. My goal is to get away from DVD storage for home movies entirely, so I need to compress my .avi files to a reasonable size. I refuse to do so at the expense of quality, however. After a dozen experiments in QT, I determined that from my Sony Handicam, the following settings retained full clarity:
h.264, 29.97frames/s, 5700kb/s, best quality, 640X480.
The end result for a 54 second clip was an .mp4 file roughly 1/5 of the size of the .avi (188MB down to 38MB). Has anyone achieved a better compression rate without quality loss? I want to ensure the best rate before I set to converting hours of home video. Any suggestions appreciated.
Message was edited by: Dirk The Hammer

Patrick, thanks so much for your help. You're all really helpful on here!
Exporting in prores still displays artifacts and they show up when I bring it into FCP (regardless of whether I import the clip fresh or have it saved back from a "send").
Here's what I tried:
importing clip directly into a new motion file (not sent from FCP) - movie displays with artifacting - upon rendering, rendered clip still has issue - imported into FCP - still shows artifacting
by importing the motion clip with artifacts into FCP and display in the timeline, FCP changes it's settings to match the clip as usual - I then tried importing the original source clip directly into FCP and when I move it to the timeline, it also shows identical artifacts. However, if I bring in the original clip first, so FCP changes it's settings to match it, the motion clip still shows compression.
Assuming the problem is with the transcode, is this just an issue with this video format working with motion? If so, I assume this means our video team needs to use a different codec. We're shooting a lot of green screen for HD video - any recommendations for a better codec?
Also, is this an issue that Apple can address with future versions of Motion?
Thanks again!

Best compression rate - help - i'm still green

Help. Can any give me an estimate for what would be a good encoding rate for a footage with a lot of movement but yet only 6 minutes.
Thanks

Is it only the portions that have been transcoded from DVD that are strobing? You have to figure that since your source DVD has been compressed to fit onto the original DVD, and the fact that DV video is already compressed 5-1, and then you are compressing it again to fit on your own DVD, there are going to be issues.
If it was me, I'd find out if I could get hold of the original tapes and recapture. Or, failing that, get hold of the original edited files. Any way you can cut out some of these compressions will only help your cause.
How did you 'pull the video' from your client's DVD? What software did you use? Every time I've done this, the result has been less than stellar. But I didn't have any strobing. This is perhaps because the DVDs I've taken footage from were generated from those DVD camcorders and bypassed some of that compression.
I do an awful lot of videos authored to DVD, which include elements from everywhere under the sun. I get digital stills, consumer MiniDV tapes, camcorder-generated DVDs, scanned photos and professionally-done MiniDV footage. And it's usually of people playing sports. Plus I add transitions like classic dissolves and such. After many tests on my system, I've come to a few conclusions:
Number one—CBR 6.7 (in DVDSP) gives me the best overall result for achieving decent motion AND decent dissolves. 2-pass schemes end up giving my dissolves a ratty look and end up making the whole video look cheesey. If you're not happy with that in your own tests, try upping the bitrate some, but I'm convinced that CBR is best for my needs 99% of the time.
Number two—I only use Maxell-R or RiData-R DVDs.
Number three—When it really counts, I burn my DVDs from a disk image in Toast as Data and on the UDF setting. And I burn it at 4x speed.
Others may debate me on a few of these, but these are the conclusions I've come to on my system, with my software. I generate hundreds of DVDs at a time and are played on every system imaginable. I rarely get one back as 'unplayable.' In fact, It's only happened once in the past year. And in that one case, it had been burned at 12x speed. Once I replaced it with the same file burned at 4x, it played fine.
Also, you read a lot of folks talking about only doing your encoding to MPEG2 through Compressor. I don't notice enough quality difference to justify the outrageous amount of time Compressor takes to encode an MPEG2 file. And, in some of my tests, DVDSP did a BETTER job.
I create the audio file in Compressor (AAC), and then replace the AIFF audio file DVDSP creates with it before dragging the audio and video into DVDSP's Graphical Menu.
I hope some of this helps you. I've learned these lessons through an awful lot of "stomach pain." I've read a lot of advice in this forum and tested it on my own system on my own projects. Your results, as they say, may vary.

Need help with compression rates with Sorenson Squeeze 6, Compressor3.5.2

Hopefully somebody can help me with this...
I am running Sorenson Squeeze 6 on a Mac to try and compress some Apple ProRes 422 videos into an MPEG-2 file. The file will be played in a DirectX application, running on a PC with Windows 7. When being played it looks to be heavily compressed, and I need help with some of the compression settings.
Let me get more into detail...
So I have received a Quicktime .mov that has been encoded with FCP using Apple ProRes 422 compression at 720x486 , 29.97 fps, 40.29 Mbit/s , and the file size is 515.7mb.
So, this is the type of file I will have to compress into an MPEG-2, that will be playing on a...
1.6 GHz Intel Atom 330 Dual Core
NVIDIA GeForce 9400M Graphics
1Gb DDR2 800 Ram
32Gb SATA Solid State Drive
Windows 7 Home
Here is what I have done so far on my Mac using Sorenson Squeeze 6 :
I have brought the original file in and created some presets.
First off, I am encoding these MPEG-2 videos using an elementary stream type so I can mux the files using MPEG Streamclip...
Here is a screenshot of the settings I am using in Sorenson :
- I have changed many of the data rate settings as low as 3000 Kbps, and as high as 15,000 Kbps, and the end result looks essentially the same
- The audio isn't a problem, so I'm not going to address that.
- I have used the crop/deinterlace filter and also not used the filter, and it makes a big difference, so obviously it needs to be deinterlaced.
From there I will get the .m2v file and the .m2a file, and then mux those with MPEG Streamclip.
So, I have done 8 different Pre-sets all with various settings playing primarily with the data rate, and the method from 2-pass vbr all the way to 1-pass cbr.
So again, my end result that is playing back on the windows 7 box (the specs that are listed above) looks to be heavily compressed and pixelation occurs.
- I have also done the exact same with Apple's Compressor, and have gotten better results muxing while compressing, however the end result still tends to be the same, however the end result is much better. I have gone through 8 or so different compression export settings, and just overall still have the same issue.
Any help would be greatly appreciated!
Thanks,
Crawford and Luke
LKC Creative, LLC.
[email protected]

You are using a custom layout so my directions don't make any sense...
For the future, you can set this up in DVD SP's Preferences:
Using the Standard window layout the things to play with would be like the screenshot below:

File compression in Mavericks: can you control the compression rate?

Hi all,
Is there anyway a user can control the commpression rate in Mavericks. I previously used Stuffit Expander and the built in compression in Entourage 2008. As Mavericks has its own compression utility I cannot find where you can control the rate etc.
I have removed Stuffit Expander 2010.
Regards
Bob

Not via the GUI. However, the Terminal command compress does have a compression ratio setting. Launch the Terminal app in /Utilities and type this into the window that pops up:
man compress

Audio compress rate

Hello!
Does anyone know the tech-specs for airport express (latest ) with regard to at which rate audio files are compressed? What Im trying to establish is if the airport express is able to stream 24/192 Khz audiofiles or if it compresses audiofiles to some other bit-rate.
Thanks
Per

Hi sercher,
You'll need to record the tapes into MP3 format before you put them into your MP3 player. The way I've done this with my tapes in the past is to connect my old Walkman cassette player to my PC's sound card with the appropriate cable. Then I've used TotalRecorder or similar software to record it in MP3 format. It is all at li've speed: I hit "Play" on the tape player and "Record" in TotalRecorder, and come back to the PC 40 minutes later to stop things and flip the tape when it runs out.
It is a bit slow and tedious. I don't think there would be a faster way unless you could find some special hardware. A cassette player's going to play the cassette at regular speed, and that's the limiting factor.

Video rate advice

Would be a video rate of 1500kbps (with Handbrake) be good to see a movie on apple TV and a 42 inches plasma screen? Thanks for any help

I have a 32" screen...
The default bitrate when using the ATV preset on Handbrake is 2500kbps, which for a 2 hour movie is about 2+GB
I tweaked the bit rate ripping Raiders of the Lost Ark at 1000kbps then 1500kbps and finally at the default, 2500kbps. The 1500kbps was totally fine and saves you over a gig space. I think the final file size for Raiders at 1500kbps was 956 megs as opposed to 2.13BG for the default setting on Handbrake.
I watched the 2500kbps (Apple TV preset) vs the 1500kbps (custom) and unless you're a REAL CRAZY videophile you can't tell the difference. This may help you save some space. It's up to you in the end really.

Compression rate advice

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