I have compared MP4 to wave and I must say it seems much cleaner, does MP4 use AAC or something else for the audio tracks, could some one explain why it should sound better ?
Acorn
MP4
- Mike H
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#2 Re: MP4
MP4 is an encapsulation, so could almost be anything in it, but according to my VLCplayer converter profiles:
Profile: "Video - H.264 + MP3 (MP4)"
In the Edit window:
Video Codec: "H-264"
bitrate: "not used"
Quality: "not used"
Frame Rate: "same as source"
Audio Codec: "MPEG Audio"
bitrate: "128 kb/s"
Channels: "2" (stereo)
Sample Rate: "44100 Hz"
So by default it's mp3.
Looking at actual mp4 files there's slight variation in bitrate value, otherwise the same.
Profile: "Video - H.264 + MP3 (MP4)"
In the Edit window:
Video Codec: "H-264"
bitrate: "not used"
Quality: "not used"
Frame Rate: "same as source"
Audio Codec: "MPEG Audio"
bitrate: "128 kb/s"
Channels: "2" (stereo)
Sample Rate: "44100 Hz"
So by default it's mp3.
Looking at actual mp4 files there's slight variation in bitrate value, otherwise the same.
"No matter how fast light travels it finds that the darkness has always got there first, and is waiting for it."
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- Mike H
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#4 Re: MP4
Clear as mud!
Whatever, it's compressed.
Whatever, it's compressed.
"No matter how fast light travels it finds that the darkness has always got there first, and is waiting for it."
- The Stratmangler
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#5 Re: MP4
Sometimes losslessly - ALAC is MP4Mike H wrote:Clear as mud!
Whatever, it's compressed.
Sometimes lossily - AAC can be MP4
Chris
- pre65
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#6 Re: MP4
I always thought MP4 was for video.
The only thing necessary for the triumph of evil is for good men to do nothing.
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G-Popz THE easy listening connoisseur. (Philip)
Edmund Burke
G-Popz THE easy listening connoisseur. (Philip)
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#7 Re: MP4
It is.pre65 wrote:I always thought MP4 was for video.
It's a general format container - you can encapsulate whatever you want into it
Chris
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#8 Re: MP4
So re the original question, depends what format is actually in it. Need to look at the file properties?
"No matter how fast light travels it finds that the darkness has always got there first, and is waiting for it."