[access-uk] For Dean: digiTV and demuxing the AD channel
- From: "Stephen Green" <stephen.tina@xxxxxxxxxxxx>
- To: <access-uk@xxxxxxxxxxxxx>
- Date: Tue, 27 May 2008 11:22:48 +0100
Hi Dean
Before I start, you won’t find this problem with radio shows as they never
contain an AD track.
Here’s how to demultiplex DigiTV TV recordings to strip apart the normal
soundtrack and the audio description soundtrack.
First, open DigiTV as normal – you may want to mute the sound by pressing the M
key so that you can hear the prompts with Jaws or other screen reader.
Go into the file menu and down cursor four times to the tools item and press
enter.
Right cursor twice to get onto the demultiplex tab.
Tab four times until you hear browse after the input file prompt. Press the
spacebar to get to a normal windows open dialog box.
Press shift+tab to get into the file list of your recordings. Cursor down until
you hear the name of the file you want to demultiplex. Now tab four times
until you land on the open button and press the spacebar. You should hear jaws
counting up towards 100%.
Now, here’s where things get interesting.
You are suddenly thrown back to the main DigiTV screen and wonder where the
heck the demultiplex page has gone. However, don’t worry this is a bug in the
software and all that has happened is that jaws has lost focus on the page. To
return it to the focus, just press alt+tab and the windows will swap around
and you’re back in the demultiplex dialog box.
Now press tab until you land on the start demux button. Pres the spacebar and
you will hear jaws reporting the percentage that DigiTV has demultiplexed
the file. This may take one or two minutes depending on the size of the file.
However the count never actually reaches 100%, it always appears to end at
99%. Now tab ten times until you land on the exit button and press spacebar and
you will get back to the main DigiTV screen.
Close down DigiTV.
Now open your recordings folder and you will find that there are 3 new files,
these will be the name of your recording plus 00c0.mp2, 00c1.mp2 and 00e0.m2v.
The file ending in 00c0.mp2 is the normal soundtrack, the file ending in
00c1.mp2 is the audio description soundtrack, which in your case should be
silent.
You can play the 00c0.mp2 file in win amp or you can edit it in goldwave after
it has converted it into an mp3.
HTH
Steve Green
Other related posts:
