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View Full Version : Bug in AACENC V2.15? Severe problem...


Chibi Jasmin
23rd April 2002, 20:54
This is carried over my post in A/V formats forum, cause it now appers to be an aacenc problem...:

I today made an XVID-AVI (625 MB) and an AAC-Audiofile (72,5 MB) from a whole movie.

Both play fine, when muxed to MP4 alone in wmp4player, audio even in RealOnePlayer/Envivio.

The movie is 1:39:06 long.

Audio-file only, RealOne shows exactly that duration and plays fine (WMP4Player has no time stamp output).

Audio+Video muxed: WMP4Player plays movie, but audio is heavily off-sync. If opened in RealOne/Envivio it doesn't show the video, but it plays audio and shows a time of 1:43:18...something fishy here.

With MP4Creator I tried lots of combinations of rate, optimize, hint and interleave and order of muxing and whatever always with the same result. Anyone can help?

I narrowed it down a bit...it is the audio that is actually 1:43:18 long after encoding with Psytel AACENC....playing with WinAmp Plugin (showing time remaining) shows correct length from the beginning and then when reaching 0.00 starts to count up again....so there must be some info in the file it is 1:39:06 but actually it isn't...I tried with -streaming and with -streaming profile 2 both times same result...input wav was 16 bit int and was correct.

AACEnc seems to somehow timestretch the file...

Anyone knows of any related bug in AACENC V2.15?

MaTTeR
24th April 2002, 04:03
I haven't heard mention of this being a known bug.

I'm curious if WinAmp shows the incorrect duration on the AAC also. What quality level or profile did you use for the AAC encoding?

Perhaps it time for me to drag Roberto over here from the HA forum:)

Chibi Jasmin
24th April 2002, 07:30
I have also asked at HA...someone said he had this before, but doesn't remember which parameters he had...winamp shows correct duration...but plays (showing remaining time, starting at 99:06) up to 0:00 then starts counting up again, so it plays actually longer.

BTW: Someone already played with FastENC? Is it an alternative? I never got it to accept any -profile setting...

Chibi Jasmin
24th April 2002, 12:13
forget it :-) The problem must be in the winamp plugin (Faad)...and not in the audio file.. had the same problem with a faac encoded file....sorry for confusion, but my problem must then be somewhere in the muxing process as I originally thought, but that is off-topic here...