Opened 3 years ago

Last modified 3 years ago

#5075 new defect

Duration of M4A file is wrong?

Reported by: d4eva Owned by:
Priority: normal Component: undetermined
Version: git-master Keywords:
Cc: Blocked By:
Blocking: Reproduced by developer: no
Analyzed by developer: no

Description

I think duration is an issue after all.
I attached files to demonstrate it.

8.wav and 9.wav are original ones.
There should not be any gap in between (those are small pieces of tracks 8 and 9 from Depeche Mode Violator).

When I concatenate files 8.wav and 9.wav and then open resulting 10w.wav in Audacity I see that there's no gap in between, so this is OK. It sound fine as well.

ffmpeg -f concat -i ccw.txt  10w.wav

8.m4a and 9.m4a are ones created with FFmpeg.
When I concatenate them like this and then open resulting 10.wav in Audacity I see that there is a gap in between. That can be heard as well.

ffmpeg -f concat -i cc.txt  10.wav

Attachments (8)

8.wav (431.3 KB) - added by d4eva 3 years ago.
9.wav (1.9 MB) - added by d4eva 3 years ago.
8.m4a (40.1 KB) - added by d4eva 3 years ago.
9.m4a (181.6 KB) - added by d4eva 3 years ago.
10.wav (2.4 MB) - added by d4eva 3 years ago.
10w.wav (2.3 MB) - added by d4eva 3 years ago.
cc.txt (22 bytes) - added by d4eva 3 years ago.
ccw.txt (22 bytes) - added by d4eva 3 years ago.

Change History (9)

Changed 3 years ago by d4eva

Changed 3 years ago by d4eva

Changed 3 years ago by d4eva

Changed 3 years ago by d4eva

Changed 3 years ago by d4eva

Changed 3 years ago by d4eva

comment:1 Changed 3 years ago by d4eva

  • Summary changed from Duration of AAC file is wrong? to Duration of M4A file is wrong?

Changed 3 years ago by d4eva

Changed 3 years ago by d4eva

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