What kind of mp3 is this?

David1105 · 31st July 2007, 23:31

When drag n' drop a mp3 file (File X) into Graphedit, it automatically creates a graph like:

File Async source -> MP4 splitter -> Audio decoder -> Render

For other "normal" mp3 files, their graph generated by Graphedit is:

File Async source -> MPEG-I Stream Splitter -> Audio decoder -> Render

Why two different immediate filter (MP4 splitter or MPEG-I Stream Splitter) are alternatively picked and plugged in the graph?

(Also, before playing back "File X", Windows Media Player gave an error message complaing about its format. However, it still can be played back.)

Thanks!

smok3 · 1st August 2007, 00:06

aac in mp4 container renamed to .mp3? (just guessing

)

Brother John · 1st August 2007, 01:09

Or really MP3 wrapped in MP4? What does GSpot or MediaInfo say about the file?

David1105 · 1st August 2007, 01:13

Quote:

Originally Posted by Brother John

Or really MP3 wrapped in MP4? What does GSpot or MediaInfo say about the file?

From MediaInfo:

Format : iTunes
Format/Info : Apple AAC audio with iTunes info
Format/Family : MPEG-4
File size : 3.15 MiB
PlayTime : 3mn 25s
Bit rate : 128 Kbps
StreamSize : 40.0 KiB
Encoded date : UTC 2007-07-28 13:30:34
Tagged date : UTC 2007-07-28 13:30:51

Kurtnoise · 1st August 2007, 11:59

Clearly not an mp3 file...

Brother John · 1st August 2007, 12:29

Yep, smok3's guess was correct. It's an AAC file wrapped in MP4. It shouldn't have an .mp3 extension. Better rename it to .mp4 or .m4a

31st July 2007, 23:31	#1 \| Link
David1105 Registered User Join Date: Nov 2006 Posts: 116	What kind of mp3 is this? When drag n' drop a mp3 file (File X) into Graphedit, it automatically creates a graph like: File Async source -> MP4 splitter -> Audio decoder -> Render For other "normal" mp3 files, their graph generated by Graphedit is: File Async source -> MPEG-I Stream Splitter -> Audio decoder -> Render Why two different immediate filter (MP4 splitter or MPEG-I Stream Splitter) are alternatively picked and plugged in the graph? (Also, before playing back "File X", Windows Media Player gave an error message complaing about its format. However, it still can be played back.) Thanks!

1st August 2007, 01:09	#3 \| Link
Brother John (schein)heilig Join Date: Jun 2003 Location: Germany Posts: 512	Or really MP3 wrapped in MP4? What does GSpot or MediaInfo say about the file? __________________ Brother John When lost in BeSweet's options, have a look at the Commandline Reference. DVD nach MPEG-4 klappt nicht? Verzweifelt? Auf zum Encodingwissen!

1st August 2007, 12:29	#6 \| Link
Brother John (schein)heilig Join Date: Jun 2003 Location: Germany Posts: 512	Yep, smok3's guess was correct. It's an AAC file wrapped in MP4. It shouldn't have an .mp3 extension. Better rename it to .mp4 or .m4a __________________ Brother John When lost in BeSweet's options, have a look at the Commandline Reference. DVD nach MPEG-4 klappt nicht? Verzweifelt? Auf zum Encodingwissen!

1st August 2007, 00:06	#2 \| Link
smok3 brontosaurusrex Join Date: Oct 2001 Posts: 2,392	aac in mp4 container renamed to .mp3? (just guessing )

1st August 2007, 11:59	#5 \| Link
Kurtnoise Swallowed in the Sea Join Date: Oct 2002 Location: Aix-en-Provence, France Posts: 5,191	Clearly not an mp3 file...