Re: Quicktime : save export settings problem
Re: Quicktime : save export settings problem
- Subject: Re: Quicktime : save export settings problem
- From: Brennan <email@hidden>
- Date: Wed, 5 Apr 2006 21:42:24 +0200
On 3/4/06 at 09:01, benoit cantin <email@hidden> wrote:
> benoit cantin a écrit :
>
> [snip]
>
> > However, I cannot export movies using h.263 video encoding
> > when using a file created with save export settings.
> > Instead, I get a movie where video seems to be encoded in
> > mpeg-4 format. But, if I choose to export the .mov file with
> > the most recent settings, I get the desired file (with h.263
> > video).
>
> Hello,
>
> I finally corrected one of my script so that I can now export
> movies in h263 standard, using "save export settings"
> function. But...
>
> When using "save export settings", I get strange audio setup,
> while video settings are the good ones. Typically, I would
> like to set audio to AAC-LC, Mono, 32kbps, 16khz, better
> quality, but when writing settings with "save export settings"
> and encoding with this new file, I get AMR Narrowband, Mono,
> 8,000 Khz (wondering if this is the default setting for 3gp
> ?). Directly exported with QT, settings are the good ones.
>
> Have you ever heard of any subtlety about saving sound
> settings ?
Hmm... nope. This COULD be a bug...
But just so you are clear about it, the 'trick' for using QTES ("QuickTime
Export Settings") files is:
1) Perform one export MANUALLLY with the correct settings.
Just use a small movie representative of the kind of content you'll be
dealing with.
2) Save the QTES file (using an applescript) e.g.
set f to (choose file name default name "something.QTES")
tell app "QuickTime Player"
tell movie 1
save export settings for AIFF to f
end tell
end tell
You have to target 'save export settings' to a movie because different
movies support different kinds of export. (You can't export MIDI data from
a SWF file, for example).
[repeat steps 1 and 2 if you need to export with different settings]
3) Write your export script so that it uses the QTES file you want
********
If you're getting screwy audio results following this procedure, it's a
bug and should be reported to Apple!
********
In case it isn't already obvious, the QTES mechanism is a hack put
together by the QuickTime engineers so that we could automate different
kinds of export in the same session. Making it any 'nicer' would probably
have required some GUI work in the player, which was (naturally) outside
the scope of the relevant update.
Insider Tip: If you have added any third party exporter components to your
configuration (e.g. the Flix FLV encoder) then you'll need to find out the
four-character 'thing' subtype for the exporter.
You can get this four-character code from the developers of the exporter,
or else there are a small handful of tools which will tell you what
QTcomponents you have installed on your own machine. (There used to be
just such a utility in the Firewire SDK, but it's a while ago now!).
Note that only components of type 'spit' or 'spt1' are exporter
components.
BTW the 'thing' code for Flix FLV is "WFLV", so you would do
export movie 1 to aFileSpec as "WFLV" using settings aQTESfile
If you really can't find out those subtype codes, I have an applescript
somewhere which will list them. It uses the satimage osax.
--
Brennan Young
"When all treasures are tried, truth is best."
-Chris Cutler
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