On Wed, 22 Nov 2006, [UTF-8] Bernhard Fr??hmesser wrote:
> I have a mpeg2 (m2v) video file and a ac3 aufiofile which i would like
> to multiplex but when i try i get this:
> INFO: [mplex] mplex version 1.9.0 (2.2.7 $Date: 2006/02/01 22:23:01 $)
> INFO: [mplex] File Test.m2v looks like an MPEG Video stream.
> **ERROR: [mplex] File Test.ac3 unrecogniseable!
> **ERROR: [mplex] Unrecogniseable file(s)... exiting.
How was the ac3 file produced? Which program created it?
> When i play the ac3 audiofile with mplayer it plays normally with this
> output:
the player might be skipping over an invalid or incorrect header.
I had similar problems at one time with AC3 files created with ffmpeg.
ffmpeg/Mplayer/liba52 would play them but programs such as DVD Studio
Pro would reject them OR the files would not play correctly in
the DVD player.
> Any ideas why mplex can??t recognize the ac3 audio file?
Invalid or incomplete header is my guess.
When you run mplex do you see lines like this:
INFO: [mplex] Scanning for header info: AC3 Audio stream 00 (world.ac3)
INFO: [mplex] AC3 frame size = 768
INFO: [mplex] AC3 AUDIO STREAM:
INFO: [mplex] Bit rate : 24576 bytes/sec (192 kbit/sec)
INFO: [mplex] Frequency : 48000 Hz
INFO: [mplex] SYSTEMS/PROGRAM stream:
I would expect to see at least the first line saying that mplex is
'Scanning for header info'. If you don't see that then mplex isn't
even trying to interpret the file as AC3 - and I don't have any ideas
why that would happen.
Cheers,
Steven Schultz
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