Mic input audio not appearing in final DVD

Waldo1967 · Post by **Waldo1967** » Wed Apr 27, 2005 2:48 am

I'm using a Canon GL2 to record weddings. I just bought ULead and love it, but I had a problem with the first wedding I did with it. All the audio that I recorded when I plugged an external mic into the mic input on the camera is not showing up on the brides TV system. I used a wireless mic for the vows, and she doesn't hear any of it on her system. Everything plays fine on two of my DVD players at my place.

When I record with the mic I'm only getting sound in the left channel, irregardless of whether I choose 12 or 16 bit sound.

I record into my system with a Canopus Raptor card, import into Premiere 6.5, edit, export to Microsoft DV AVI, import in Ulead. Then I use the 90 minute setting for the 1.5 hour DVD.

The strange thing is that the sound is showing up in Premiere with both left and right channels, so Canopus must be converting the left channel into stereo.

The raw Canopus DV AVI file shows up as:

Audio: 1536 kbps, 16 bit, PCM
Video: 29 f/s, 24 bit, Canopus DV

The converted Microsoft DV AVI has the exact same audio settings.

It must be something with her TV settings like surround sound. ?? Do you think recording with AC-3 sound would be different? And what is Surround Emulation?

Thanks for the help guys.

MikeGunter · Post by **MikeGunter** » Wed Apr 27, 2005 3:28 am

Hi,

Unless you have a stereo microphone, the sound will be on the left channel only.

You can duplicate the left channel in the audio view.

Mike

rwernyei · Post by **rwernyei** » Wed Apr 27, 2005 3:48 am

You have some options:
1) Do as Mike suggested and duplicate left channel in audio view.
2) Download Nick's audio filters which will do the same and more. jushhome.com
3) Export to DV-Type 2. Wav file will downmixed to stereo by DVD player.

Waldo1967 · Post by **Waldo1967** » Wed Apr 27, 2005 5:14 am

Thanks for the tips. I might try the duplicate channel option.

But I came up with another option. I have ProCoder so I took the final converted AVI and made an .mp3 (high quality) sound file, opened up the project again in Premiere and replaced the sound with the new .mp3 file.

I'm taking the test over to the brides house tomorrow and I'll let you know how it went.

But again, what's Surround Emulation, and what's the big difference between AC-3 and the normal 90 minute option?

Waldo1967 · Post by **Waldo1967** » Wed Apr 27, 2005 5:19 am

Sorry guys, I can't find the duplicate audio feature. Are you talking about Premiere or Ulead?

DVDDoug · Post by **DVDDoug** » Wed Apr 27, 2005 6:26 pm

she doesn't hear any of it on her system. Everything plays fine on two of my DVD players at my place.

All DVD players are required to play LPCM audio. NTSC players (Canada & USA) required to play AC3 also. Some DVD players can play MPEG-2 or MP3 audio. PAL players must play MPEG-2 audio (AC3 is optional).

what's the big difference between AC-3 and the normal 90 minute option?

AC3 uses about 300 MB and LPCM uses about 1000 MB for a 90 min DVD. AC3 leaves more space for the video... You can use less video compression (a higher bitrate) for higher-quality video.

I sometimes use DVDshrink to quickly confirm the audio format on a DVD that I've burned.

You can duplicate the left channel in the audio view.

That seems like the easiest way... I can't help with the details, 'cause I don't have Workshop on this machine.

If I'm going to play-around with the audio, I'll usually extract the audio to a wave file (with Video Studio), and then I'll use GoldWave (CAD $55) to edit/process the audio. I'll use the edited audio track for the DVD. There is a popular free audio editor called Audacity.

Of course, when you're editing the audio separately, you must not make any edits that screw-up the A/V sync. This means making your video edits before extracting the audio, and not making any audio edits that change the length of the audio file!

Waldo1967 · Post by **Waldo1967** » Wed Apr 27, 2005 6:52 pm

Thanks Doug.

What I still don't understand is why the captured video with the mic is showing up as both left and right in Premiere, and then can't be played in this woman's DVD player. ?? Maybe it's just showing up that way, but it's really still a left channel. I keep thinking it must be a surround sound issue or something. She has this huge big screen tv.

I think the reconversion of audio will do the trick. And about sync, yes, I'm doing all my editing in Premiere, then converting the audio with Procoder, then bringing it back in as an mp3.

MikeGunter · Post by **MikeGunter** » Wed Apr 27, 2005 7:15 pm

Waldo1967 wrote:Thanks Doug.

What I still don't understand is why the captured video with the mic is showing up as both left and right in Premiere, and then can't be played in this woman's DVD player. ?? Maybe it's just showing up that way, but it's really still a left channel. I keep thinking it must be a surround sound issue or something. She has this huge big screen tv.

I think the reconversion of audio will do the trick. And about sync, yes, I'm doing all my editing in Premiere, then converting the audio with Procoder, then bringing it back in as an mp3.

How do you know it is in both channels?

You will want the same sound in both L/R channels, in this case.

Right click the mouse on the selected audio track.

Mike