[MEncoder-users] ac3 mistaken for mp3 in recent versions of MEncoder

[Laine Lee]

Here are some details about the problem mentioned in my recent post
(http://permalink.gmane.org/gmane.comp.video.mencoder.user/11332) that
prompted me to start a new thread.

My problem is that when I try to copy ac3 audio while converting demuxed
AVCHD (h.264 video and ac3 audio) to mpeg2 using the mpeg2video codec with
lavc, the output mpg file is empty (0 in size).

In my latest tested working version, 30677, output contains this:

libavformat file format detected.
[ac3 @ 0x101889e00]max_analyze_duration reached
[ac3 @ 0x101889e00]Estimating duration from bitrate, this may be inaccurate

With the latest versions (31101, 31097), which don't work, I get this
instead:

libavformat file format detected.
[mp3 @ 0x101820000]Header missing
    Last message repeated 796 times
[mp3 @ 0x1018bb600]MAX_READ_SIZE:5000000 reached
[mp3 @ 0x1018bb600]Estimating duration from bitrate, this may be inaccurate

Although compiled with identical options within a few minutes of each other
on the same system, the newer versions apparently think my .ac3 is .mp3. Any
idea why?

Thanks.

Laine Lee