On some MP4 encodes, I get the following error message after the encoder has finished:

"MP4CREATOR caused an invalid page fault in
module MP4CREATOR.EXE at 018f:0047cd91.
Registers:
EAX=00700078 CS=018f EIP=0047cd91 EFLGS=00010286
EBX=0080000c SS=0197 ESP=006ef5a8 EBP=006ef5c8
ECX=0070423c DS=0197 ESI=3fffffff FS=1a8f
EDX=3e5d2e00 ES=0197 EDI=00000036 GS=0000
Bytes at CS:EIP:
8b 0a 2b 4d f0 8b f1 89 4d f8 c1 fe 04 4e 83 fe
Stack dump:
00817f60 0000001c 00000009 00817080 00000030 0070423c ffffffff 00000020 006ef830 00479047 0080000c 004a69d0 0047900e 0000001c 0047a269 0000001c"

The MP4 file itself is fine. Can't figure out what is casuing the page fault. happens on some files but not on others. This is more of an annoyance, since the file is ok. Any ideas?

Also, finding that AAC is a slower encoder than LAME 3.90.2 or MPC. The spped isn't important to me, just interested in whether my experience is typical. Example:

CSN&y - Deja Vu. 43,411 KB WAV file

MP4 (-extreme) Size: 7,096 KB Time: 1:18
MPC (--quality 6 -xlevel) Size: 6,566 KB Time: 16
Lame 3.90.2 (AP fast extreme) Size: 7,877 KB Time :28
Lame 3.90.2 (AP extreme) Size: 7,120 KB Time: :55

PC is fairly fast: Pentium 4- 2.4 Ghz (reads as 2.66 GHS, 533 Mhz FSB); 256 MB DDR 333 Mhz PC 2700 RAM; 40 GB ATA-100 HD; Intel D845PEBT2 board.

Thanks, Steve

So you use PsyTEL AACEnc and mp4creator with Speek's GUI?



How do the original WAVs differ, in size perhaps? Are they reconverted from another format?



You could use Nero AAC or PsyTEL FastEnc, both are about twice as fast as AACEnc.

[/QUOTE]So you use PsyTEL AACEnc and mp4creator with Speek's GUI?

Correct. Using aacenc_mpeg4, and MPCreator60.exe, renamed as MPCreator per the instructions on HA.

You could use Nero AAC or PsyTEL FastEnc, both are about twice as fast as AACEnc.

Thanks for suggestions. Don't want to par for Nero, but I will give Psytel FastEnc a spin.

Hans-Jurgen, thanks kindly for replying. Steve

Which thread? I'm wondering what this should be good for... It's probably more important what date the EXE has, because Roberto compiled a new version of the MPEG4IP tools recently.



Hmm, maybe this is already an incompatibility between a new mp4creator and an old AACEnc_MPEG4... Because of that you should no longer use this PsyTEL codec and either switch to AACEnc or FastEnc, depending on your favorite usage.



See also the Wiki pages for "PsyTEL" and "MP4":
http://www.audiocoding.com/wiki/index.php?page=PsyTEL