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Topic: mp4 rename to m4a (Read 4680 times) previous topic - next topic
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mp4 rename to m4a

i've rip some cd in wav files and use nero encoded to mp4, after i rename the extension of mp4 to m4a, after i did that, will i damage the quality of sound?

thank you

mp4 rename to m4a

Reply #2 –
Quote
Changing the file extension does not hurt the audio quality.
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i don't have the ipod now, but in the future, i'm planning to buy one.
can this format (mp4 renamed to m4a) put into ipod through the itunes?

thanks for help

mp4 rename to m4a

Reply #3 –
As far as I know the only difference are the extention. m4a means mp4 audio and is audio in mp4 container, most likely aac codec. The difference in naming are only to separate audio only files from mp4 files that might contain video. So mass renaming shouldn't affect your files at all....

here's a little renaming scheme, if that's useful.
"ONLY THOSE WHO ATTEMPT THE IMPOSSIBLE WILL ACHIEVE THE ABSURD"
        - Oceania Association of Autonomous Astronauts

mp4 rename to m4a

Reply #4 –
hi

in foobar2k there's plugin to convert aac to mp4, what's the difference between that two formats and which is the better?
i know theres two frontends for nero aac and both produce different formats, whats the difference?
thanks

mp4 rename to m4a

Reply #5 –
Quote
hi

in foobar2k there's plugin to convert aac to mp4, what's the difference between that two formats and which is the better?
i know theres two frontends for nero aac and both produce different formats, whats the difference?
thanks
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The plug-in(convert aac to mp4) in fb2k only "transmuxing" aac to mp4,
the difference is, aac is an audio format, mp4 is a container.
read more about this container info's [a href="http://forum.doom9.org/showthread.php?threadid=62723]here[/url] and here :)

mp4 rename to m4a

Reply #6 –
Quote
Quote
hi

in foobar2k there's plugin to convert aac to mp4, what's the difference between that two formats and which is the better?
i know theres two frontends for nero aac and both produce different formats, whats the difference?
thanks
[{POST_SNAPBACK}][/a]

The plug-in(convert aac to mp4) in fb2k only "transmuxing" aac to mp4,
the difference is, aac is an audio format, mp4 is a container.
read more about this container info's [a href="http://forum.doom9.org/showthread.php?threadid=62723]here[/url] and here
[a href="index.php?act=findpost&pid=289479"][{POST_SNAPBACK}][/a]

hi, yesterday i installed dbpoweramp in my computer, and it add an id tag in the properity of aac, mp3 files, and when i saw the difference between the mp4 (nero encoder codec and itunes codec), there is some differene described in id tag, and it contained some codec in the file, such as "Nero AAC Codec 3.0.0.4" &  "itunorm 000002EA 0000039D 00001E4B 00001F9A 00026826 00026826 00007765 00007679 000268B0 000237B9", but for the audio quality, they all almost the same! i can't hear the difference, for itunes codec, i use 256kbps, as i know, itunes is use cbr, for the nero codec, i use the vbr 160~250kbps lc-aac.

mp4 rename to m4a

Reply #7 –
Quote
The plug-in(convert aac to mp4) in fb2k only "transmuxing" aac to mp4,
the difference is, aac is an audio format, mp4 is a container.
read more about this container info's here and here
[a href="index.php?act=findpost&pid=289479"][{POST_SNAPBACK}][/a]


thanks