[FFmpeg-user] MP4 to wav
Carl Zwanzig
cpz at tuunq.com
Sun Apr 16 20:37:13 EEST 2023
On 4/13/2023 12:14 AM, Paul B Mahol wrote:
> It is not mp4 file format.
That's right, it's not (don't believe the file extension)--
Complete name : C:/temp/1122.mp4
Format : MPEG-PS
File size : 1.37 MiB
Duration : 13 s 937 ms
Overall bit rate : 823 kb/s
FileExtension_Invalid : mpeg mpg m2p vob vro pss evo
Video
ID : 224 (0xE0)
Format : HEVC
Format/Info : High Efficiency Video Coding
Format profile : Main at L4.1@Main
Duration : 13 s 937 ms
[...]
Audio
ID : 192 (0xC0)
Format : MPEG Audio
Format version : Version 2.5
Format profile : Layer 2
Format settings : Dual mono / Reserved
Duration : 10 s 600 ms
Bit rate mode : Constant
Bit rate : 40.0 kb/s
[...]
If the file extension is wrong for the contents, it's possible that the
audio format tagging is also wrong -or- more likely that the OP was told
G722 while it's really mpeg. It's also possible that there was a problem
with the original encoding.
z!
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