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MP3 and WAV transcription file timecode question

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Jeffrey Irvine
MP3 and WAV transcription file timecode question
on Aug 9, 2010 at 11:58:52 pm

Hello,

I received mp3 files for the transcription of an interview we filmed recently. The mp3 files were supposed to have time code encoded onto them, but it was not encoded onto one of the audio tracks. I've been assured that the time code information is stamped into the file, but I'm not sure how to read this information. Could it be in the metadata?

Similarly, I received a .Wav transcription file a while back with the same issue. The timecode was not recorded onto one of the audio tracks, but it was fed into the file. I have not found any software that can discern it.

Is there a way to get at this metadata or encoding to see the timecode?

Thank you!

-Jeff


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Mark Barroso
Re: MP3 and WAV transcription file timecode question
on Aug 10, 2010 at 1:02:00 am

You would hear the timecode if it was there - it sounds like a sewing machine heard through a fan. It's not just a software issue, as the words have to be sync'd with the timecode in transcription. I don't know what hardware they use, but places like Transcript Associates in NYC can do it. Very pricey, though.


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Ty Ford
Re: MP3 and WAV transcription file timecode question
on Aug 10, 2010 at 3:16:11 am

Hello Jeffrey and welcome to the Cow Audio Forum.

I don't know what you mean "it was not encoded on one of the audio tracks,"

Does that mean it was recorded on the other track?

You need a time code reader that will take the output from that particular track and display it.

Regards,

Ty Ford

Want better production audio?: Ty Ford's Audio Bootcamp Field Guide






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Peter Groom
Re: MP3 and WAV transcription file timecode question
on Aug 10, 2010 at 8:41:38 am

As already said. if you listen to the audio tracks You WILL hear it.
(My ex boss could tell what the tc hour and minute was just be listening to it!!. He was always right, but this skill never gets a girl at a party!)
If you can hear it, you will need a TC reader to display it. This is a heardware thing i rekon.
If you cant hear it, dont bother as its not there.
MP3 doesnt support any tc option OTHER than recording it asa an ltc feed of audio (Longitudinal Time code track)
BWAV is an advanced wav file with Broadcast in its extension. This allows suitably equipped users to tc staamp the file. You will then have to have suitable software to import it and display it. Not even sure that Pro tools does this. A google for reading Bwav timecode should help.

Cheers

peter

Peter


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Ty Ford
Re: MP3 and WAV transcription file timecode question
on Aug 10, 2010 at 11:33:16 am

If it isn't on one of the audio tracks, I don't think you're going to hear it.

If it's just time stamped at the beginning of the file, that's not the same as continuous time code, it's just a starter marker.

Regards,

Ty Ford

Want better production audio?: Ty Ford's Audio Bootcamp Field Guide






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Chris Sisson
Re: MP3 and WAV transcription file timecode question
on Aug 24, 2011 at 6:47:38 pm

I have been working with a transcriber to figure out how what hardware she can use to read the LTC timecode on a stereo track.

We are using the Zoom H4 recorder in the field recieving TC from cam.

Anyone knows what products would work for this?

Here is one product I'm trying to research:

The device is called Easy Reader. Don’t see a model number. Their website is at: http://www.timecode.com/easyreader.html
There’s a picture of the device on their website. Per the webstie: It’s a miniature LTC time code reader with RS-232 interface. Ideal for notebook or laptop computer applications. Operates on a 9V DC battery. Software included in DOS-logging, EDL, programming examples and more. Also included are two HOT-KEY programs which add time code/ user bits to either DOS or Windows applications.

FEATURES:
1. SMPTE/EBU Longitudinal Time Code Reader
2. Operates in 24, 25, 30, Drop and Non Drop Frame
3. RCA connector for time code input
4. 9 pin connector with 2.5' cable for RS-232 input/output
5. Connects to any RS-232 serial port (IBM, MAC, AMIGA, etc)
6. 9V battery powered (Approximately 25 hours)
7. Weighs 6oz.

Any help is appreciated. Thanks
Chris


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Bouke Vahl
Re: MP3 and WAV transcription file timecode question
on Aug 24, 2011 at 8:39:05 pm

Never worked with this one, but i have worked with another Telcom reader (VITC and LTC), and that worked just fine.

However, IMHO hardware to do so is a bit outdated, and last time i've checked the hardware readers were quite expensive.

Do have a look at this:
http://www.videotoolshed.com/product/27/transcriber-2-dvd

Does not only read LTC but also reads BWF and Mp3 timestamps, and in case of no TC, you can manually set it.

(disclaimer, i'm the author...)

hth,

Bouke

http://www.videotoolshed.com/
smart tools for video pros


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Richard Crowley
Re: MP3 and WAV transcription file timecode question
on Aug 10, 2010 at 9:19:48 am

Both MP3 and WAV audio file formats support an unlimited number of internal tags. The beginning time-code is likely encoded into one of these internal tags. There are standalone utilities to read these tags. Also some applications will display the contents of these tags, and even allow editing the values.

http://en.wikipedia.org/wiki/Category:Tag_editors


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Bouke Vahl
Re: MP3 and WAV transcription file timecode question
on Aug 10, 2010 at 11:06:20 am

If wave contains TC, it's probably BWF.
Besides Jeffrey's comment, the TC MUST be stored in a Bext or Mext entry.
(Bext for Wave, Mext for Mpeg1 layer II)

Mp3 is 'not' a BWF format.
(That does not mean that someone could have added a Bext or Mext part...)

The common Mp3 style metadata is 'sound devices' style.
See if my Transcriber application can find the TC:

http://www.videotoolshed.com/product/27/transcriber-2-dvd

If not, contact me direct and i'll see if i can make it compatible.

Bouke

http://www.videotoolshed.com/
smart tools for video pros


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Ty Ford
Re: MP3 and WAV transcription file timecode question
on Aug 10, 2010 at 11:40:57 am

if that app doesn't read the metadata try this one.

http://www.sounddevices.com/products/waveagent.htm

Regards,

Ty

Want better production audio?: Ty Ford's Audio Bootcamp Field Guide






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Jeffrey Irvine
Re: MP3 and WAV transcription file timecode question
on Aug 10, 2010 at 4:46:29 pm

Thank you for the advice, everyone. Everything you say makes perfect sense.

To clarify, I definitely do not hear the timecode on either of the audio tracks. If it is encoded somehow, it would be in the metadata as Ty and Bouke say.

Unfortunately, I've tried a couple of tag readers and Bouke's Transcriber software, and nothing has been able to detect timecode. It's certainly possible that it simply was not encoded after all, but I am still exploring other options.

I suppose once the footage is loaded, we could export a QT from Avid with the timecode embedded and use that for transcription (assuming Avid can still export QTs with embedded timecode -- I would hope to avoid the render time of using BITC). It would be ideal to have it transcribed sooner, however. I'll let you know if I have any luck.

Thanks!


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Bouke Vahl
Re: MP3 and WAV transcription file timecode question
on Aug 11, 2010 at 8:31:48 am

Jeffrey,
Do drop me a line and send me an example file.
(I'm a TC geek, if it is there, and it is in a format i don't know yet, i want to see it...)

Can't be that hard, there are only a few places where it can live.

Bouke

http://www.videotoolshed.com/
smart tools for video pros


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Matt Mayer
Re: MP3 and WAV transcription file timecode question
on Aug 13, 2010 at 11:36:21 pm

Jeffrey,

If the file came from a Sound Devices machine, the TC metadata would be in the ID3 tags and easily viewable in any software that will show you the standard MP3 tags - they even will show in Windows File Explorer.

If the tags are there, BWF Widget will read the MP3 tags and show you running timecode while the files are playing. N.B. - BWF Widget is PC only.

http://www.bwfwidget.com/

---Matt

---Matt


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Andrew Bateman
Re: MP3 and WAV transcription file timecode question
on Oct 12, 2012 at 11:55:10 am

Hi Bouke,

I was trying out your program because I have an mp3 with a timecode stamped into it but I can't seem to make it work. The timecode is definitely there because it sounds like a "sewing machine heard through a fan" but the program isn't reading it.

Does anyone else have any suggestions? This is my first time transcribing mp3s with timecodes and I need to get some transcripts to a client ASAP.

Thanks for any help!

Andrew


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Bouke Vahl
Re: MP3 and WAV transcription file timecode question
on Oct 12, 2012 at 12:06:41 pm

Matt,
Transcriber can work with a lot of different TC's.

For you, go into the Preferences.

Set it to Pal / ntsc, whatever it is,

Set it to the desired channel (left or right) where the TC lives
Check the 'expect TC breaks' if you are sure there are.
Otherwise, (if you have a lot of files, each file for each take),
it's just a waste of time since there will be no breaks.

If that fails, send me your file and i'll have a look.
(my mail adress is on my site)

Let me know if you get it working!

Bouke

http://www.videotoolshed.com/
smart tools for video pros


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Andrew Bateman
Re: MP3 and WAV transcription file timecode question
on Oct 12, 2012 at 8:27:27 pm

Hey Bouke,

Thanks so much for your help. It worked!
I really appreciate your prompt reply.

Cheers,

Andrew


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