Does improving bit rate improve quality when importing from a lossy file?

Okay, if that question made no sense, here's an example:
I have a 5 Megabyte file encoded as an MP3 at 192 kbps.
I like to keep all my files in one format though, and currently my preferred format is AAC.
Would it make sense to convert it to 320 kbps AAC?
I get the feeling that since the data for that bitrate is gone (since MP3 is lossy)
it wouldn't make any sense trying to improve the bitrate. All I would get is a large file
that sounds the same as 192 kbps AAC.
Is that right?

Yes and No.
You are right that converting to 320kpbs AAC will not increase the quality since the data is already gone.
However for the next but you are slightly wrong.
What you will get is a large file that sounds the same as 192kbps MP3, which is not as good as 192kbps AAC (AAC is better quality than MP3 at the same bitrate).
Also, there is always a loss in quality when going from one lossy format to another.
If it's possible to go and re-encode the original source material at a higher bit-rate AAC I would definately do that, but if all you have is the 192kpbs MP3, then just leave them as they are and don't worry about having different formats.

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Sheryl
Message was edited by: Sheryl Kingstone

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bogiesan wrote:
-DWS- wrote:
Thanks. That is what makes the most sense to me. How do I elect how After Effects interprets the footage? I went to preferences but couldn't find anything that fixed the problem there.
See the help system for Interpret Footage.
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Thank you Lower Fields first was selected

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I got iMovie 06 but, when I tried to install it said that I should have iLife 08 installed.
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http://www.apple.com/downloads/macosx/apple/application_updates/imoviehd602combo .html
http://www.apple.com/downloads/macosx/apple/application_updates/imoviehd603.html
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Dear All
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No.
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Hello,
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Welcome to the forum.
They work on several levels:
A subscriber comes with a problem/question, and then, hopefully, someone will have an answer
A subscriber comes with a problem/question in mind, and then finds other threads, very similar, and hopefully gets the answer
A subscriber comes to read, to pick up ideas, etc.
In your case, it appears that # 2 worked, just as it should.
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As mentioned above, if the playback is for a computer (not a DVD player and TV), then better Color and Gamma might be achieved by doing an AV file, and then burning that to a DVD-Data disc, for delivery. However, one still has the variables of the client's computer, its monitor and even the software player used. All play a big role in how that AV file will play for them.
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Hi,
I want to create a report package in MS-Office using Financial reporting. I want to import several FR reports to MS-Word using Smartview and then be able to print the word document.
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You'll see lots of discussion in the forums about maintaining the best quality, and there are workflows which result in better quality... but iDVD creates standard definition DVDs and these are unlikely to match high quality original footage.
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How can I keep tabs on the file size when importing from the Event Library into a Project? I want to ensure the movie will fit onto a 4.7Gb disc?

How can I keep tabs on the file size when importing from the Event Library into a Project? I want to ensure the movie will fit onto a 4.7Gb disc?

iDVD does not care about file sizes, as it compresses the file to the standard DVD format of mpeg2.
It only cares about length i.e. max 2 hours including titles etc.
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http://docs.info.apple.com/article.html?path=iDVD/7.0/en/11417.html
Short version:
Best Performance is for videos of up to 60 minutes
Best Quality is for videos of up to 120 minutes
Professional Quality is also for up to 120 minutes but even higher quality (and takes much longer)
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In both cases the maximum length includes titles, transitions and effects etc. Allow about 15 minutes for these.
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Use the Capacity meter in the Project Info window (choose Project > Project Info) to determine how many minutes of video your project contains.
NOTE: With the Best Performance setting, you can turn background encoding off by choosing Advanced > “Encode in Background.” The checkmark is removed to show it’s no longer selected. Turning off background encoding can help performance if your system seems sluggish.
And whilst checking these settings in iDVD Preferences, make sure that the settings for NTSC/PAL and DV/DV Widescreen are also what you want.
http://support.apple.com/kb/HT1502?viewlocale=en_US

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When importing from my Canon ZR 600 60 minutes of tape equals 16.1 Gigs
I am looking for what I am doing wrong I have 10 hours of Disney I would like to turn into 5 dvd set not 15 dvd set. Any help would be greatly appreciated.

Hi Gregory
About 13-14 Gb per hour miniDV tape movie is as iMovie (QT) works. When
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55 min movie and 5 min for menues is OK in max qual.
115 min + 5 for slightly less.
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Yours Bengt W

How Can I Delete Originals I Don't Care to Keep When Importing From SD Card?

Hi All,
Just installed LR3 thanks to Santa. Have been going thru the video tutorials as well as the Lightroom_3_Help PDF and Lightroom-GettingStarted_Lo PDF but I can't figure out how to simply delete files from the gitgo when importing from SD Card or from my HDD (files already moved to HDD but not yet culled or imported into LR3). I was hoping I could, in LIBRARY, just r/c on a file that is plainly not worth keeping and just delete it so I dont have to do it later. Seems like I could, this way, be able to concentrate more on the shots requiring editing.
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Phil,
PhilipCWells wrote:
I understand that LR3 does ND editing but I assume that if I only keep a DNG then any time I want a JPEG or PNG of a picture I have to open LR3 to make one. Since I only have been shooting a few hundred pix a year (though with my new D5000 this will change) I am not gonna load up my HDD any time soon. So, is there a way I can make a DNG file, keep the original RAW or JPEG file AND save a processed JPEG or PNG copy in my DESTINATION folder in one swell foop?
The LR Exchange site has three plug-ins that allow you to keep a "mirror" copy of your DNG/RAW images in JPG format for use by others without having to go into LR and generate them when needed. The link is:
http://www.adobe.com/cfusion/exchange/index.cfm?searchfield=tree&search_exchange=25&search _category=-1&search_license=&search_rating=&search_platform=0&search_pubdate=&num=25&start num=1&event=search&sticky=true&sort=0&rnav_dummy_tmpfield=&Submit=
One of them should help you with this.
Jeff (in San Diego as well)

Does improving bit rate improve quality when importing from a lossy file?

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