Mp3 audio is shorter than the same wav audio

So i ran into this issue which i have tested several times and I get the same results.
I start with a WAV file. Convert this to an MP3 file. And the wave forms no longer line up (causing a sync loss).
I have had caulegues verify this independently and we have no idea why? Is this due file compression and the way Flash access it?
Any help greatly appreciated.

What are you using to compress the MP3 from the WAV? Since both formats are so old and well known/implemented, this is definitely a strange bug. In fact I'm going to convert something from WAV to MP3 using Audition right now to see if I see a difference in Flash Pro CC 2014 and Flash Pro CS6.
Ok so CS6 has a slight mis-alignment but not an actual progressive problem. Here you can see in the 4000 frame range the sounds are about a frame or two off and the waveforms differ but ultimately are in sync:
I opened the same thing in Flash Pro CC 2014 (only I had to include markers and I downgraded from 48Khz Stereo 32bit WAV to 44.1Khz Stereo 320Kbit 16bit MP3 or Flash Pro CC 2014 (but not CS6) kept erroring trying to import). They are offset just like in CS6 but are ultimately in sync. Same 4k range:
How about some details on your source WAV and destination MP3 encode settings?

Similar Messages

Why are ACR PSD files 10-20 percent larger than the same file resaved in PSD?

Why are ACR > PSD files 10-20 percent larger than the same file resaved in PSD? I posted this many years ago and never found an answer. Now that my drives fill up quicker, I thought I might chase this question a little bit further.
Same .CR2 saved within ACR either with cmd-R or open ACR within PSD, the saved file is 34.5mb. Resave that same file (no edits) within PSD either with or without Max-compatible and the file is now 30.7mb. Another file that is 24.5 becomes 19.5MB.
Why the difference? Is ACR and PSD actually using different compression strategies?
thanks.
Mac 10.8.5 / CC / ACR 8.4.1 - but this has been a consistent behavior over many years and versions, CS6 / CC.
Same .CR2 saved within ACR either with cmd-R or open ACR within PSD, the saved file is 34.5mb. Resave that same file (no edits) within PSD either with or without Max-compatible and the file is now 30.7mb. Another file that is 24.5 becomes 19.5MB.

Hi Jeff
If it is RLE it's not as efficient as LZW:
Saved ACR>PSD = 40.1MB (sample image this AM)
opened in PS and resaved as PSD = 30.8MB
resaved as TIF without LZW = 40.1MB (this adds to your thought that the ACR>PSD doesn't us any compression)
resaved as TIF/LZW = 9.6MB
Jeff Schewe wrote:
I really think your priorities are a bit off. 10-20% is meaningless...you just need to get bigger.... and quit fussing over a few GB's here or there...
??? I hope that the Adobe engineers are fussing over 10-20% efficiencies.
I'm within arms reach to a rack of 40TB of drives (doesn't include off-site drives), and all 2TB drives are being recycled to 4TB drives, as a result the rack is always growing. Actually the ACR>PSD files don't really make a difference in our long term storage, only for the nightly backups. But anyway, how you save, what you save etc. should all be part of the discussion.
.... so in my case, throw in an excess MB here and there and all of a sudden you are talking TB's. Plus advantages in backup times, drive life, and energy use.
Somebody added compression into the PS>PSD format, but it wasn't included in the ACR>PSD format, was it a decision or an oversight? If it's just a matter of making ACR compatible with PS when saving the same PSD format..... then why not?
regards,
j

I can download a movie faster over my broadband connection using my ATV3 than the same movie over my LAN

I can't believe the poor performance of my networked iTunes setup. It has deteriorated over the past 12 months or so such that a purchased movie (HD Dark Knight Rises) can be downloaded from iTunes directly to my ATV3 faster than my n-based network at home even when i wire using 1Gb ethernet! My network connection is via cable, but it still utilises the sme WIFI connection to get to my ATV3 - How can this be?
I has seen various threads that talk about reseting the network, the ATV's, iTUnes, restarting my iMAC etc. none of which has any effect anymore (it did appear to previously).
I have iMAC to host iTunes, MacBook, 2 x ATV2 and 1 x ATV3, 2 x Airport Express for audio, 2 x iPad, 2 x iPod, 1 x iPhone 4S and 1 x iPhone 5 so it is safe to say that i am pretty heavily invested in Apple and I love the products but the more invested i become the more dissappointed. It is a real shame that regression testing does not seem to be high on their agenda these days.
If there are any bright ideas out there i would love to hear them cos i have run out for now..............
Thanks
SB

From my Airport Extreme, throughout my network (other than my cable router) everything is Apple, I update when patches become available. I check using iStumblr what conflicts there might be. Basically, other than the network being in my house it is as close to being the defacto Apple setup as it could be (notwithstanding my applications which are not that numerous).
Furthermore why can the same network enable me to stream from the iTunes store the same movie across the same network faster than on my local LAN where the only difference is going to be the location from where the data is "served". Especially when everything has worked in the past.
You are correct though in many respects given that the term network is loosely attributed to everything from the cable through WIFI and the chipset and firmware. So generically it is likely to be the "network" or an attribute of it. It would appear however that my issues coincided with a firmware upgrade, I would be very happy to uninstall and go back to previous versions to solve my problem but it isn't possible and I have no intention of jailbreaking my devices. If I could then i would nail the problem and inform Apple of my findings.
So, given that I am entrely Apple, that I install all firmware updates across all products and that I check for network interference............
Hence the reason for the post.

Can you use iTunes match and not get duplicates if you maintain mp3s and aiffs files of the same song in either the same or separate libraries?

I maintain a collection of aiff files and mp3 files of the same music.
Aiff for home listening and Mp3 for my devices.
I can arrange these in the same or seperate libraires.
Will "itunes match" duplicate the songs in the cloud if they in the same or seperate libraies on the same mac?
If not, is anyone aware of how to manage seperate Mp3 and Aiff libraries so as not to get duplicates in itune match?
All assistance is appreciated.
Thanks!

Hello mracole,
I checked my "purchases" and the 7/19/13 purchases don't show up. However, the earlier versions from usually several years back...the ones that are Matched...often do show up in my Purchases. I suspect that somehow those REALLY purchased several year old versions were deleted and redownloaded by me so I could change them to the 256 kbps versions under iTunes Match. They were probably 128 kbps versions originally when purchased.
Why the earlier versions that were really purchased are now identified as Matched is puzzling.
Why I now have Purchased versions from 7/19/13 is puzzling too...especially since these versions do NOT show up in my purchases.
Calling Apple Support if a good idea unless someone can explain this mystery. I might even take one of my laptops to the Apple store and show a Genius.
Thank you very much for taking the time to respond, Mr. Luigi

Font in Illustrator prints different than the same font in a different document

I created two pdfs in Illustrator and on the monitor they look the same because they are the same font, character size, both with the same black fill with no stroke but when they are printed it looks different. One version looks grey while the other looks normal. I have double checked settings, cut and pasted the text into the document that prints correctly and nothing seems to fix this error.It's the second file that doesn't print properly aka BuyzFrontv2 copy.
Am I missing something?
Thanks in advance.

One of the problems is that much of the text is in 4-color black, probably as a result of cutting pasting from Word. There is less of it in the second one than the first. You might want to clear this up and then retry.

Problems for playing the same wav "n "times

Hi everybody
I ve this problem:
In the emulator in my pc, i can play the same "bomb" sound (a file, with extension.wav) the times i want... but when i upload my app to the device, the sound only plays one time(the first time), the next times, it doesnt make any sound... what can be happening? I dont undestand
This sound i use it, to notify when a user, sends me a message.
The device, i m using is a Motorola C650.
Any suggestions(HELP)?
Cheers

Not with Acrobat, no. There's a Search & Replace function, but only for one
instances at a time.

Why are images displayed in Photoshop different than the same images displayed in Indesign?

My images imported to Indesign do NOT display as the images in Photoshop.
They seem to display under different color profiles.
The images in Indesign are more desaturated than the images in Photoshop.
This is a problem because now I don't know which image appearance to trust!
How can you get the Indesign images to look like the images in Photoshop?
I use Photoshop CS4 and Indesign CS3.
I import the images from Photoshop to Indesign for exporting to a PDF as the base for Blurb printing (www.blurb.com).
I use the CMYK profile Blurb_ICC_profile.icc:
The images in PS4 are converted to Blurb_ICC_Profile (CMYK).
Both in PS4 and ID3 the color settings are
                           Working spaces:
                              CMYK: Blurb_ICC_profile
                           Color management Policies:
                               CMYK: Preserve Embedded Profiles.
The images are imported into Indesign by drag and drop from Bridge CS4. In Bridge it says that the images have color profile CMYK, Blurb_ICC_profile.
I also do get "Unsynchronized: Your Creative Suite Applications are not synchronized for consistent color." And I don't seem to be able synchronize between CS3 and CS4, or whatever. I do NOT depend on any synchronization.
The settings above should be enough to show the images consistently in Photoshop and Indesign.
SO WHY DOES IT NOT?
Should not Adobes own applications be able to keep color consistency?

Hi WA Veghe,
>First: DO synchronize, makes sure you have the same profile settings and color mange settings.
I don't seem to be able to synchronize between CS4 (Photoshop) and CS3 (Indesign).
It seems I have to do without synchronizing..
>I do not seem to find HOW you are diplaying images on you screen: with Soft proofing?
What happens if you soft proof in Photoshop and InDesign on screen: View > Proof colors. Do you proof with the same profiles, both simulate paper and black on?
I can simulate Proof Colors (working CMYK), but not simulate Paper, both in Indesign and Photoshop.
Problem is: SAME settings in Photoshop and Indesign BUT the image displayed in Photoshop is brighter and more saturated.
So which image should I correct after?
thanks for all help
/L

When i export a video in windows media format is shorter than the original

I tried a lot of time, using Quicktime 7.3.1, to convert a .mov video to a Windows Media .wmv video using the default settings but the result is shorter than original, my original video is 4 minutes, the exported just 30 seconds.
Maybe is my fault, something wrong in my laptop or a Quicktime bug?
I hope someone can help me
Thanks, Marco.

You have the trail of Flip-4-Mac. You need to buy the full version to be able to convert to WVM.
http://www.flip4mac.com/
There's no way around this, sorry.

Why field length is shorter than the actual one in a SQL query based grid?

Hi,
I have a grid based on a SQL query on a UDO table, but I found when I retrieve the data from a SQL query some column show only part of data. For example, in SQL server the query should return one column data like "ABCD", but in the grid it only shows "A" or "AB". I think the SQL query should be good because when copy the same query executing in SQL server side, it returns me all complete data. But when it is executed in add-on inside a grid, then some column only returns me partial data. In most case it only return the first one or two characters. I don't see any special in the query. Basically it is normal SELECT query, the only possible special is it is using "UNION".
The SQL query looks like below:
SELECT fieldA, fieldB FROM table1
UNION ALL
SELECT fieldA, fieldB FROM table2
When it is executed in SQL side, everything looks good, but when i run it in a grid in add-on then fieldB column only display partial data.
Any idea?
Thanks,
Lan
Edited by: ZHANGLAN on Oct 4, 2011 11:55 PM

Hi All,
Thanks for all your replies, I agree that the issue is caused by the UNION in SQL query. Because when i create a view in SQL based on that query and the grid is based on that SQL view then everything is fine now. I think Petr's solution should work in this case.
Thank you again!
Lan

Local weather in Weather app different than the same city

In the Weather app on iOS 7, the temperature for the city of Charlotte, NC (where I am) is one number, but the temperature for the local city, also Charlotte, NC, is different. I don't understand how this happens. It's the same city. Does anyone know how to fix this? I've included a screenshot of both cities taken literally a second apart from each other.

Hello James,
It sounds like you have the same city set up on your phone twice in the Weather app, and they both show different temperatures. The reason for this is the one on the left is using your current location, down to the zip code. The screenshot on the right is indicative the temperatures for the city as a whole. When you are setting up a new location for your weather app, you can enter a Zip Code, or city name and that is what determines what information you see.
Add a city or make other changes. Tap .
Add a city: Tap . Enter a city or zip code, then tap Search.
From: iPhone User Giude
http://help.apple.com/iphone/7/#/iph1ac0b35f
Thank you for using Apple Support Communities.
All the best,
Sterling

Why is the length of my FCP imported video shorter than the original QuickTime version?

When I open my .mov file in QuickTime, it is 15:33. However, when I import it into FinalCut, it is only 14:09. Is this a frame rate issue? How do I fix it? Thanks for any help...sorry if this is a silly question.

What is the format of this Quicktime file? FCP doesn't just work with any old QT file. It must be in an FCP editing codec, like ProRes or DV/NTSC. Dropping in H.264 or other highly compressed codec can lead to all sorts of issues. If it isn't ProRes, convert to ProRes first.

Does the .rep report run faster than the same program in .rdf format

Hello,
We have some reports timing out because they take too
long to bring back results. If we used the .rep file instead of
the .rdf file, will the reports run faster? Does it take very
long to compile or is it most likely the SQL needs to be tuned
for better performance?
Thanks in Advance..
Pmoore31

No, the report will not run faster. It is most likely that you
need to fine tune the SQL.

Can I burn .m4a and .mp3 file on the same CD?

I downloaded a few podcasts and have one in .m4a format, the other in .mp3.
Can both be burned onto the same CD via iTunes -- or do I need to convert?
And if so, what format should both podcasts be in?
Thanks.

Can both be burned onto the same CD via iTunes
Yes.
And if so, what format should both podcasts be in?
If you want an audio CD, just put all files into a playlist and click *Burn CD* then select Audio CD. iTunes will convert them to CD audio.
Selecting Data CD/DVD in iTunes will burn the files as they are. They can be MP3, AAC, AIFF or whatever and will be burned in that format (useful for backing up files)
If you select MP3 CD (this is the format of the files on the CD), the files must already be in MP3 format.
This is the same as a Data CD/DVD except iTunes will use only MP3 files (because many players can play MP3 files).

Managing both Lossless and MP3/AAC versions of the same album

I've recently decided to keep a lossless version of some albums along with their mp3/aac counterparts. I would want to use the lossless version on my Apple TV to which I have a nice audio setup. I would use the mp3/aac version to go to my ipods (touch & nano). I was thinking of just keeping two playlists and selectively syncing to the appropriate device But will there be any collisions since the tags on the lossless and mp3/aac tracks will me the same (same album, same song, etc.) Do I have to modify any of these so they dont conflict? Thanks for your advice in advance!

Thanks for the info. But it looks kinda messy. And you have to have the ipods manually managed. I'm thinking it would be easier to change the album title to "title MP3" to distinguish it from the lossless copy instead of doing all this encoding work. I was hoping there would be a cleaner way to do it.

Seperate mpeg2's in the same track? Help!!

Apologies if this has been asked before but I cant seem to find an answer.
Is there any way to place more than one mpeg2 and AC3 into the same track? I've been trying to do this, But I can never get the audio lined up correctly. It's always half a frame off!
My problem is that I have a 40 minute film to put on DVD, but I want to be able to change certain chapters in case I messed something up...and not have to recompress the entire movie again. Is this possible?

Don't think Houghts is understanding you... you want to multiple movies one after another on the track, right?
Not a problem for video, but the audio should be created as one stream. AC3 audio is not frame based but sample based. At the end of the4 encode, the AC 3 file wil generally be a wee bit shorter than the aif as you have seen. Thus, putting multiple AC3s one after another will end up with synch drift.
Do a search =there's a couple of explanations about why it works that way.

Mp3 audio is shorter than the same wav audio

Similar Messages

Maybe you are looking for