Available software to reduce bit rate of mp3's

I am unable to send some audio mp3's as Email attachments because they exceed thye 15mb limit. Are there any software programs out there that will reduce the bitrates of my mp3's so they can be Emailed???

Chris CA wrote:
Is it possible to compress an Mp3
Not much at all.
The file is already compressed when converted to MP3.
You may save a few kBytes but not that much.
A 15MB file may compress down to 14MB or so.
you could split the files up ...

Similar Messages

  • Bit rates :   "good" in mp3 is "high" quality in ACC ?

    When I got my Mac in late March, and commenced w/ the importing, I knew nothing of bit rates. Don't know much more now.,.,...but a friend recently pointed out the rate of 128 being lossy.
    Checking preferences, we see that in mp3, 128 is indeed the lowest of 3 choices_yet in ACC encoding, it's listed as "high".
    I'm sick to the bone at the thought that the nearly 10,0o0 items I've imported into iTunes are now ALL in need of a re-do !!
    Is 128 in ACC actually inferior ?
    I'd imagine that converting the entire library to mp3's doesn't do more then slightly "expand" tracks that were encoded lossy to begin with !
    ==oY!==
    TIA,
    ~~~=Dave

    Is 128 in ACC actually inferior ?
    Not if you play back using a 'standard' audio system. On high end systems you may notice lack of 'depth' compared to playback of an original (store bought) CD. AAC 128 kbps is good quality for general purpose.
    Importing your CDs is always a choice between the available space on your HD (and/or iPod) and the audio quality.
    The best audio quality is achieved by importing your CDs in AIFF, WAV or Apple Lossless.
    The first two are uncompressed formats, having all audio information, but they result in huge files (about 10 MB per minute).
    Apple Lossless is a compressed file format, still has all audio information (it's lossless as the name implies), but results in smaller file sizes (about 5 MB per minute).
    MP3 and AAC are lossy compressed file formats, resulting in small file sizes (about 1 MB per minute at 128 kbps). Both compressing methods 'throw away' certain, less important parts of the audio.
    AAC is considered to have a better algorithm (calculation method).
    As a result AAC at 128 kbps is as good as 160 kbps mp3.
    If you're happy with the audio quality of AAC 128 kbps (same format as songs sold in the iTunes Store) there's no need to redo them.
    Converting these songs to 160 (or 192) kbps mp3 will not improve sound quality, but worsen it.
    Omitted parts of the audio cannot be recovered (only calculated).
    As AAC and mp3 use different calculation methods, some of the audio information will be omitted again and worsen the quality.
    If you are unhappy with the audio quality, import a few tracks in losless formats (AIFF, WAV or Apple Lossless) or AAC and/or mp3 at higher bit rates.
    Listen to them on your system and determine which quality sounds good for your ears.
    Remember though, importing at high bit rates or uncompressed formats requires lots of disk space.
    Hope this helps.
    M
    17' iMac 800 MHz, 768 MB RAM, 200 GB HD, DL burner   Mac OS X (10.4.8)   iTunes 7.0.2

  • How can I reduce the bit rate of songs in my Music Library to enable me to

    At the moment i can only fit about 1300 songs on my iphone and also have used up half the space on my 120gb Classic with 7000 songs which is a lot less than what i was told would fit on. so............
    How can I reduce the bit rate of songs in my Music Library to enable me to fit more songs onto my iPhone or iPod Classic.. and what is the minimum rate that i should stick to in order to retain good sound quality.

    For existing tracks, see:
    http://support.apple.com/kb/HT1550
    For CDs you import in the future, change the Import settings in the iTunes -> General preferences.
    As to what will be a good bit rate, that's going to be up to you and what quality you find acceptable, but many people find that 128 kbps AAC is the optimum balance between small file size and quality.

  • What is the highest mp3 bit rate that Ipod plays without disk problems

    I have a 60gig iPod. i note that iTunes can encode to mp3 at a bit rate of 192. Can the 60gig iPod play these files without any disk problems. If it can are there any other considerations?

    the current ipod (5th gen) specification says...
    Audio formats supported: AAC (16 to 320 Kbps), Protected AAC (from iTunes Store), MP3 (16 to 320 Kbps), MP3 VBR, Audible (formats 2, 3 and 4), Apple Lossless, AIFF and WAV
    http://www.apple.com/ipod/specs.html
    btw the ipod disk isn't the limiting factor, sound files are played from buffer memory, the disk only runs when the buffer needs to be refilled

  • Bit rates, file type, MP3 encoders, quality settings etc.

    Can someone provide me with or point me to a good explanation of various sound file types and settings and how it relates to sound quality and disk space? I've been importing tunes, recording some streams etc. and I realize I need a definitive source to explain to me how I can get the best sound quality, with all the variables involved: bit rate (64, 96, 128kbps etc.), file type (AIFF, WAV, MPs etc.), MP3 encoder (Apple lossless, AIFF, AAC etc.) Thanks in advance.....

    OK. The following is my opinion.
    iTunes supports 5 formats. WAV and AIFF are uncompressed and lossless. Apple Lossless Encoding (ALE) is compressed and lossless. MP3 and AAC are compressed and lossy.
    WAV, AIFF, and ALE give the same quality as a CD but are too bulky for use in an iPod. The practical choices are MP3 and AAC.
    AAC gives better quality for a given bit rate. However, it is not as widely supported as MP3. Many non-Apple players cannot handle AAC. So choose between MP3 and AAC accordingly.
    Both AAC and MP3 allow you to select an encoding bit rate, usually in the range of 32 to 320 kb/s. That number affects the audio fidelity of the compressed file as compared with the CD quality original. Given that you will be using a good stereo at least part of the time, I suggest go no lower than 192.
    You can do a web search and find listening tests, etc. You can also take a couple of tracks, rip them at 192, 256, and 320, and see if you notice anything better with the higher numbers.
    Enjoy the music!

  • How do I reduce the bit rate for existing songs

    Some of the songs are too large. How can I reduce the file size of selected songs? Thanks.

    Hi,
    You can do it by converting your file either with a lower bit rate or using an another compression algorithm. Be aware taugh that by doing so, you will loss audio quality. The best way is to restart, if possible, from your original files with your new importing settings.
    To change your importing settings, go in the iTunes preferences, in the Advanced tab and then in the Importing tab and set the compressing algortihm and bit rate. AAC encoder is the algorith that will gives you the better compressing ratio.
    Then, you you can either chose to reimport from your original CD (iTunes will ask you to replace the previously imported files) or select from the advanced menu the converting selection.

  • Compressor 3.5 won't let me reduce the MPEG2 program file average bit rate

    Compressor 3.5 won't let me reduce the MPEG2 program file average bit rate less then 10Mbps. I just installed this new version and it is giving me this problem. I have been delivering an 1hr MPEG2 program streaming at 6Mbps average to 7.1Mbps Max output with Compressor 1 for a year now. Here is my workflow;
    Drop the 1440X1080 into NTSC timeline and DO NOT conform so it will be rendering as 720X480 then shoot that sequence to compressor to above settings. It worked just fine for a year. Now, this new compressor wont let me do less then 10Mbps which is the lowest bitrate for HD. The network can not run any bigger file than 6Mbps. I checked my settings restarted and all that. IS this a bug that needs to be fixed? Any help would be appreciated since my deadline is tomorrow.

    Sorry, meant to say that this only happens with court databases. As far as I can tell, I can download from other sites with no trouble.

  • Are .aac bit rates the same as mp3 bit rates?

    Are .aac bit rates the same quality as mp3 bit rates?  That is:
    1. Is an .aac bit rate of 128kps the same quality as an mp3 bit rate of 256kps?
    2. Is an .aac bit rate of 192kps the same quality as an mp3 bit rate of 256kps?
    3. Is an .aac bit rate of 256kps the same quality as an mp3 bit rate of 256kps?
    I use VLC Media Player v. 2.1.5 Rincewind.
    1. How do I find out what the bit rate is for an .aac file?

    1. Is an .aac bit rate of 128kps the same quality as an mp3 bit rate of 256kps?
    2. Is an .aac bit rate of 192kps the same quality as an mp3 bit rate of 256kps?
    3. Is an .aac bit rate of 256kps the same quality as an mp3 bit rate of 256kps?
    Angel,
    Assuming that all of the files you referred to were all transcoded from the same high-quality source, such as a CD, here are the answers:
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    2.  At 192 they are about the same
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  • Burn voice mp3 play list to audio CD. convert bit rate or sample rate.

    I have several audio files (voice), 30 in all, that I wish to play in a car CD player.
    The car player cannot play mp3. Using iTunes I tried buring a play list of mp3 files to an Audio CD.
    I get an alert from iTunes that I may require multiple CD's. Each mp3 file is around 90megs in size or about an hours worth of audio (voice).
    The audio files are voice no music. But they are at 192 kbps bit rate and 44 khz sample rate.
    Is there a way of converting them to squeeze more files onto a CD? Changing bit rate or sample rate?
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    Now that memory serves me right. CDs have the MB size and the Minute size on them. example 700MB/80Minutes.
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  • Compressor 1.5 won't let me reduce the MPEG2 program file average bit rate

    Compressor 1.5 won't let me reduce the MPEG2 program file average bit rate less then 10Mbps. I just installed this new version and it is giving me this problem. I have been delivering an 1hr MPEG2 program streaming at 6Mbps average to 7.1Mbps Max output with Compressor 1 for a year now. Here is my workflow;
    Drop the 1440X1080 into NTSC timeline and DO NOT conform so it will be rendering as 720X480 then shoot that sequence to compressor to above settings. It worked just fine for a year. Now, this new compressor wont let me do less then 10Mbps which is the lowest bitrate for HD. The network can not run any bigger file than 6Mbps. I checked my settings restarted and all that. IS this a bug that needs to be fixed? Any help would be appreciated since my deadline is tomorrow.

    Sorry, meant to say that this only happens with court databases. As far as I can tell, I can download from other sites with no trouble.

  • Bit rate & format AAC or MP3)?

    I am about to purchase about 200 1960's & 1970's rock songs from iTunes. This will be my first purchases:
    1. I notice that the bit rate that is auto selected for me is 128. It looks like I can change this. Which bit rate should I choice to get the best sound? Am I allowed to pick, for example, 160, 192, 224, 256, etc.? Are the only considerations quality of sound and storage size? Or for rock music, is 128 as good as I need?
    2. I see that there are at least two formats, AAC & MP3. Can I purchase my songs in MP3 format in case I ever want to play them outside of iTunes or do I have to buy them via AAC?
    I have a MacBook Pro with iTunes and a Treo 680 with pTunes (which I have rarely used to listen to music). At some point in the next few months, I will probably replace my Treo with an iPhone.

    The additional hard drive space is negligible compared with the enhanced sound quality (hard for some people to hear) and the non-DRMness. It's totally worth it to get the iTunes Plus version, since you can do whatever you want to with that song file (your personal info is stored in the file, so if you distribute it you will be found out!). That means you can burn it however many times you want, play it with any media player program and, of course, load it onto non-ipod mp3 players.

  • 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
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    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.

  • Video Bit Rate Too High-how to reduce quality

    I have a Creative Zen Vision M Version .40.02. The problem is a few of my videos have a high bit rate, which from what I have read is the problem. These videos are from the free digital copy that comes with the movie. I would like to know how I can either change this, if there is a firmware that would let a higher bit rate play(from what I have looked into it doesn't appear so), or if I can't play them on my player. Thanks for any help.

    I don't know exactly what the total length of the video is in minutes, but I do know that it is 6.8GB for a dual layer. Probably at least 3 hours. I don't know what the target bit rate is? Is what you are referring is to what the compression I used in compressor?
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    I am recompressing all the videos again just in case there was a problem with one of the compressions. I don't understand why it isn't working this time when none of the settings or compression had changed.
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  • How do I reduce the bit rate when listening to iTunes preview of songs ? It is eating up my bandwidth

    I like to listen to music previews on my iphone before I decide to buy. But this is eating up my bandwidth. Even the previews are at 256 kbps. This is 4 times higher than Amazon which is 64 kbps. Is there any way to set my access to a lower bit rate, or adjust it to mono or anything ? The bandwidth cost is killing me. Thanks in advance.

    For existing tracks, see:
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    For CDs you import in the future, change the Import settings in the iTunes -> General preferences.
    As to what will be a good bit rate, that's going to be up to you and what quality you find acceptable, but many people find that 128 kbps AAC is the optimum balance between small file size and quality.

  • Too High Bit rate error no matter how much reduce it

    After Exporting an HDV 1080i 16:9 3 sequences from FCP via
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    I think - and see if you agree - that I exported using a compressor bit rate setting of 6.0 and max of 7.5 on the first 56 min sucessful sequence build/burn, and then thought I could go higher on the second export so goosed the max bit rate to 9.0 since there were occassional big bits of motion. So now on the other two sequences DVD SP won't adjust that previous compression rate, and instead I will have to sacrifice the audio quality (use Dolby only)
    to get it to build. I certainly DON't want to wait 26 to 28 hours again for each sequence to export!! Does that sound right?

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