What Bit rate???

Hi I have just finished a 55minute documentary and would like to know if anyone could advice me on what bit rate I should use when compressing (I am using Mpeg2 90minute best setting) so as to avoid jumpy images later on certain dvd players.
Thanks a lot
Daniel

I want to make a SD DVD. I mistakenly was looking under the HD options earlier. I just encoded a DVD with the following:
bit rate 7.1
max bit rate at 8.8
mode = Two pass VBR
motion estimation = best
aspect ratio = 4:3
It seems very pixelated on my 30-inch Cinema display when playing it back. I did change the encoding settings after already having the video imported into the Assets and in the Track. Not sure if you can change settings after importing. Any idea why it is pixelated?
Thanks!

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What bit rate to record for editing with iMovie?

I just bought a Sony hd pj260 video cam and need to know what to set the bit rate for shooting to edit on a MacBook pro using iMovie (snow leopard). I have a choice of 60p (28 M), 60i (24 M) or 60i (17M). I'm sure these will mean something to someone. They currently are Greek to me. Can someone advise me please. Leaving for vacation in a couple of days....
Thanks
DJ

60P wlll not work with iMovie, unless you are comfortable hacking the internals of iMovie.
60i will work and the higher bit rate, the better.
Best would be 30P.

What is "Total bit rate"?

I have a reasonable idea of what bit rates are, measured in MB/sec or Kb/sec, but whenever I use "Get Info" on a video clip I get something like . . . . "Total bit rate: 26,571" . . . . just that - nothing else.
What exactly is it?
It's too low to be b/sec.
I am sure it is too high to be Kb/sec ?
What do they mean by "Total"?
I understand "Average" and "Maximum" but what is "Total"?

I can't tell you how many people use my studio and compress their video to fit exactly on a DVD-5, and then go over because they can't fit their audio or menu graphics, or subtitles, or anything else. They go over literally by about 1-2 MB, and don't understand that you can't just stuff it in there… One byte over is too big. That's a tough one for a lot of people to grasp, but always funny when they ask if there's anything they can do to make it fit without recompressing it. I just tell them to hit it with the hairdryer.

DL DVD with 2 features at diff. bit rates?

I'm making a dual layer DVD with 2 movies; one is 2.5 hours long and one is 1 hour long. I found a layer break point and made the disc no problem. However the quality is not as good as I would have hoped. I created both movies in FCP and simply exported them as Current Settings Quicktime Movies. I set the DVD SP settings just about as high as I could.
I was considering re-exporting both movies through compressor, making the 2.5 hour movie a higher quality than the other, since the longer one is the more important one. However, the idea of working out the math to figure out what bit rates to make them each makes my head hurt. Am I correct in thinking that doing this would be one **** of a difficult task full of trial and error, hours of frustration and copious tears?

There are a bunch of ways I can think of.
1) Set the iPods to sync only "selected" playlists. For each playlist, add the songs with the proper bitrate. You can use Smart Playlists to use the bitrate of the songs.
2) Use separate libraries. 700 songs doesn't take very long to load.

MP3 Optimum bit-rate/rule-of-thu

Hi
I am ripping my pop and classical CDs and enconding them to MP3 files to play on my GB MuVo V200
and I am wondering what bit rate would be best as I'd like the sound to be high quality (~ like CD)
but then again, I do not want take up *too* much memory space per track.
A friend suggested that I use a bit-rate of 92kbps, and use VARIABLE bit rate encoding.
Is this a good suggestion as a rule of thumb?
Or is the standard suggestion of 28kbps better?
Add if so, which is better FIXED or VARIABLE bit rate?
Finally, does VARIABLE bit rate cause the MuVo to use up more battery power decoding the
MP3 file? (or less?) If more, how much more? 0%?
Thanks in advance

Well virtually all of my mp3s on my zen touch are between 92k to 320k (constant or variable bitrate) and I get around 8 hours playback which isn't that much less than the stated 24 hour playback using 28k mp3s. Also note that I don't just leave it playing continously, but I frequently browse my playlists, switch tracks and use fast forward/rewind which also consumes battery life. Therefore, I wouldn't worry too much about bitrate effects on battery life for any mp3 player.
For the same sized file, variable bitrate gives better quality than constant bitrate. If you want excellent quality mp3s with fairly low disk space usage, i'd recommend you use the lame mp3 encoder and use the "alt preset standard" encoding preset. This basically uses variable bitrate that gives an average bitrate of about 90k.
Otherwise just use 92k CBR mp3s or 60K CBR wmas.

Recording bit rate

I have a friend who keeps talking about 16- and 24-bit recording. I've also seen software that talks about "32-bit real". I'm a real noob at this, but I'm assuming the more bits the greater resolution, like more pixels per inch on an image, and I'm assuming that the 32-bit real comes in after the software does some jiggery-pokery with the input data.
We're planning to do some recording, and we're working out what computer to use. I've done some searching, but so far I've been unable to determine what bit rate the Mac uses in recording straight in through the sound input. I''m talking about a mike going straight in through the sound input and recording on something like Audacity or GarageBand.
I have a white Intel iMac, c. 2006. What's the native bit rate? Does anybody know? Also, is it any different for later models?
TIA, Matt

The digital noise is a factor of the number of bits. It is actually 6 * n, where n is the number of bits.
So for an 8 bit signal, the noise is 48 dB down, about par for a cassette tape.
16 bit is 96 dB down.
24 bit is 144 dB down, which for all practical purposes, means that everything else (pre-amps, et al) are what affects the signal fidelity.

Bit Rate for Mixed angle DVD

What bit rate will give an decent quality image if there are 4 video streams (v1-edited video,v2-4 source angles), 1 ac-3 audio stream, 1 mpeg1 audio stream. Three of the video streams are alternate angles that popup for brief ( 1 to 5 minutes ) periods of time in a 1 hour wedding ceremony. I guest the safe bit rate for all streams is around 8.5, the manuals say the max is 10.3 mbps. Can I mix bitrates for video in a mixed-angle track or do they all need to be the same?, is four video tracks just too much info ?
Thanks for all the help !

One last question; if there are four user selectable streams are you adding up the bitrate for all streams or is the total just the stream that's being played plus any audio that gives you your total ?
thanks

How do you know the bit rate of a video clip?

I have video clips from my video camera recorded in MPEG 2, PAL standard definition 720x576. 2 questions:
1. How can I find out what bit rate the video is recorded at?
2. Knowing this, can I in PProCS4 encode this for DVD without any transcoding (assuming, of course, no effects or fades etc have been added)?
I like to keep the coding the same, to avoid the quality loss of transcoding to a different bit rate.
I use 256 kb/s audio in MPEG 1 layer 2 (pretty much standard DVD format).
Any info appreciated.

In Ulead Mediastudio Pro, you can see the data rate of the video, and also in DVD Movie Factory select "do not convert..." etc, where un-edited clips are not transcoded, to give maximum picture quality. I dropped MSP, as Corel (having taken over Ulead) has, sadly' dropped the product, so I bought PProCS4 hoping it would be at least as capable. Alas. Having said that, in most respects PPro is as good or better than MSP, and runs fine on Vista and Win7 beta (which I am using now), so I am still happy I get PPro.

If I have converted my purchased iTunes songs to a lower bit rate what will happen when I join iTunes match? Will they match up or will these be stored as duplicates of the same song?

If I have converted my purchased iTunes songs to a lower bit rate what will happen when I join iTunes match? Will they match up or will these be stored as duplicates of the same song?
I ask because I primarily use my work laptop which has limited space so I usually convert my purchases to 160k from 256k in order to save space. I want to sign up for iTunes Match but I'd like to know before I do so I can understand how I will have to set up my library.

crichton007 wrote:
What I may do is start a brand new library there, copy my tracks from my work laptop using Home Share and then the script to get things in sync before starting over again there too.
Why create a new library? Just add the tracks from the laptop to the existing library on the Mac.
crichton007 wrote:
I was just hoping to hear definitively whether or not there was some sort of intelligence built into iTunes Match that would match these up...
How do you mean? If you down-convert purchased tracks you've fundamentally changed the files so iTunes can no longer recoginize them as "purchased." And, indeed, they no longer are since they are brand new files. Of course these new files will only be "matched" or "uploaded."

Is it possible to raise the bit rate of songs higher than 256 on iTunes? If not what should i use or do to raise the bit rate of songs?

Is it possible to raise the bit rate of songs higher than 256 on iTunes? If not what should i use or do to raise the bit rate of songs?

Songs you rip from CD can have their bitrate increased to a maximum of 320Kbps from the iTunes preferences; alternatively, the default encoder can be changed to a lossless one. Songs from other sources have a fixed maximum bitrate.
(67928)

What are the best data and bit rate setting for uploading from final cut express to Youtube?

Can anyone suggest the best data rate and bit rate presets for uploading footage from final cut express 4 to Youtube? What settings will provide the best resolution, quality, and match the current youtube requirements?
Thank you in advance for your help,
Susan Kayne

It depends on whether you are using aspect ratios of 4:3 or 16:9.
Below is some simple guidance that will provide good quality with reasonably small file sizes.
The first part is for 4:3 video:-
1. File>Export Using QT Conversion.
2. The "Format" window should say, "QT Movie".
3. In "Use" select "LAN/Intranet" from the dropdown menu.
4. Click "Save" and when it has finished encoding, upload it to YouTube.
If you are making 16:9 video (Standard or High Definition) do steps 1 to 3 above.
Then when you have selected "LAN/Intranet" press the "Options" button and in the new
window that opens press the "Size" button and change the "640x480" to "853x480"
To do this you will have to click on the 640x480 and a dropdown menu appears.
Select "Custom" from the bottom of the menu and in the window that opens
you will see 2 boxes.
Put 853 in the first box and 480 in the second.
Click OK.
Then Save it.

What is the maximum bit rate for a short NTSC standard def DVD?

I have about 30 minutes of content from FCP that I want to put on a DVD.
At first I tried iDVD and had problems with burning (although I did somehow make one DVD). So I built the project on DVD SP and made a DVD. However, the iDVD version looked much better. I checked out the file sizes and saw that there was 2 gigs on iDVD and only 1.6 DVD SP. Then I discovered the encoding options on DVD SP and I was curious what is the recommended average and maximum bit rate should be for the highest quality, yet still works in most DVD players?
Thanks.

DVD Bandwidth
The rate is not based on running time.
Some thoughts on rates
7.2 - 8.0 seems to be the general consensus for discs from computers. I play more conservative for the reasson listed in that link

What are the Bit Rates of the Music Store and Podcasts?

What is the bit rate quality and format of a song downloaded in the Music Store? And podcasts? Are they perfect, Apple Lossless quality or what...?

This might be true, but you won't experience any improvement in sound quality. Here's some info on bit rates:
This was originally posted by the incredible Sparky the wUnderdog
"As a general principle, you can fit more CDs on your iPod if you encode at lower bitrates (making smaller files), but at the cost of audio quality. Lossless promises to capture all the data on the original CD (thus preserving quality) but coded so the file takes half the space. MP3 and AAC (an implementation of variable bit rate MP4) both eliminate some of the information on the CD in order to compress the digital recording into ever smaller files--the lower the bitrate, the smaller the file, but smaller files mean more information lost and consequent poorer sound quality.
iTunes's MP3 encoder is so-so; the LAME encoder is better at preserving sound fidelity to the original. AAC files ripped in iTunes certainly sound better than its MP3s, with audio quality close to the best LAME MP3s at higher bitrates. With the type of music I listen to most often, sound quality declines substantially as bitrates fall below 256kbps, but LAME or AAC @ 256kbps sounds pretty darned good, and at 320kbps LAME alt-preset-insane is amazingly faithful to the original. However many users claim that with the music they listen to they can't hear the difference between 192 or even 128 kbps files and the original CD source, so they naturally choose higher compression rates to fit more "songs" on their iPods.
CDs take approximately 10MB per minute of music; Apple lossless takes 5MB/minute; LAME insane takes 2.5MB/min; AAC or MP3 at 256kbps take 2MB/min; and iTunes Store files (AAC@128kbps) take 1MB/min. At these rates, a 20GB iPod (really 18.6GB) can hold anywhere from 30 hours to over 300 hours of music. (iPod marketers express this potential playback capacity as "songs," figuring 4 minutes per song--thus 300 hours at 128kbps = 4500 "songs.") You will need to listen to samples ripped with different bitrates and codecs to determine the optimum tradeoff point for you between quality & quantity. It's worth taking some time to do this at the start as it sure beats reripping everything in your collection 2 or 3 times to get it right later.
So far as convenience goes, nothing beats iTunes's one-step process. To change bitrate as you import from CD, go to the iTunes menu > Edit > Preferences, select the Importing tab, choose AAC or MP3 encoder in the "import using" selection box, then choose "Custom" in the "setting" box, and the window permitting bitrate selection will pop up. If you choose iTunes MP3 encoder, at least use VBR (variable bit rate) to maximize the sound quality. (VBR increases sample size as data complexity increases.)
If you would prefer LAME MP3s, fear not, for the easy-to-use CDex ripping software is a free download and requires only one simple extra step to get the files into iTunes for transfer to your iPod. Now if AAC sound quality is comparable to LAME MP3, you might wonder why you should even consider LAME: Because of portability to other devices. At present, hardly anything but iPods can read AACs or Apple Lossless, but almost everything reads MP3s. So if you plan to burn CDs of your compressed files for playback on your home or car CD player (for instance), it would be wise to choose MP3.
One other consideration specific to the iPod: It has a 32MB cache. If you choose a compression rate that results in large files (i.e. lossless), then the cache won't hold very much 'music' and the hard drive will have to spin up frequently to fill it, and that will shorten your battery life somewhat."
JC

What does convert higher bit rates songs to 128 kbps mean

what does convert higher bit rate songs to 128 kbps mean?

pattyfromsyracuse wrote:
what does convert higher bit rate songs to 128 kbps mean?
Some people, myself included, import their music from original audio CDs. When doing so I choose to import using Apple Lossless format so as to keep the full original quality of the audio CDs (this is after all why it is called Apple Lossless format in that you are not losing any quality).
The drawback of doing this is that the music files take a lot more disk space than a lossy format like MP3 or AAC. This is these days not a problem on a computer as hard disk space is now cheap an plentiful but it can be a problem on a flash memory based music player like the iPod Shuffle, iPod Nano, iPod Touch, or iPhone as these have far less capacity.
Therefore Apple now let you turn on this option to automatically convert from Apple Lossless to AAC when syncing to one of these music players. As a result on your computer the music is still kept in the full lossless high quality format, but is converted and transferred as a much smaller but slightly lower quality for use on these music players. As with an iPod you are not listening in a quiet room with high quality speakers you will not really notice the difference in quality.

Figuring out what audio bit-rate I filmed at?

I started making DV movies in 2003. I am not sure what the audio setting was (probably the default 12 bit). My camera is a Sony DCR-TRV33. Is there some way I can determine what the setting is on the miniDV tapes before I capture it with FCE? That way I can make sure I get the right speed. Could I use Image Capture to grab a small section of tape and open Quicktime Player and see if I can see what the characteristics are? Thanks.

When I open the viewfinder and play my first miniDV it says 16-bit; but I don't believe that that is correct. I don't believe I made any changes to the camera when I first got it. I hope R. Mitchell Fore is correct and that FCE will tell me if the captured bit rate does not match the camera.

What Bit rate???

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