| creating mpeg-2 - why no audio?
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 | creating mpeg-2 - why no audio?
by J. Tad Newberry on May 21, 2010 at 4:18:47 pm |
A network wants our show delivered via ftp as an mpeg-2, but whether i tried it out of an FCP timeline via Compressor, or make a QT them drop it onto a droplet, i get a video with no audio. Any help?
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• | | | |  | Re: creating mpeg-2 - why no audio?
by Michael Sacci on May 21, 2010 at 4:48:44 pm |
and all you compressor settings are?
Have you setting Multiplexing in the Extras tab?
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• | | | | | Re: creating mpeg-2 - why no audio?
by J. Tad Newberry on May 21, 2010 at 6:13:27 pm |
settings are all default mpeg-2 (Program stream) Compressor settings
Extras / Multiplexed MPEG-1/Layer 2 Audio is checked and Program Stream selected (both of these by default)
thanks for the attention
Thanks again!
J. Tad Newberry
Big Ya Productions
Mac Pro 2.66 GHz Quad-Core
3 GB RAM
http://www.bigya.tv
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• | | | |  | Re: creating mpeg-2 - why no audio?
by Chris Babbitt on May 22, 2010 at 7:36:47 pm |
Try Transport Stream. That's what I use, and I get audio every time.
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• | | | |  | Re: creating mpeg-2 - why no audio?
by Dave LaRonde on May 21, 2010 at 5:29:22 pm |
[J. Tad Newberry] "A network wants our show delivered via ftp as an mpeg-2.."
Do you happen to have the delivery specs for that mpeg2 file? I'd look them over very carefully.
Mpeg2's for broadcast typically have a much higher bitrate than the files you can make using standard Apple products. You may need a specialized -- and pricey -- ecryption application specifically for broadcast.
Dave LaRonde
Sr. Promotion Producer
KCRG-TV (ABC) Cedar Rapids, IA
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• | | | |  | Re: creating mpeg-2 - why no audio?
by Michael Cheung on May 21, 2010 at 5:56:29 pm |
If you're using the Elementary Stream setting in Compressor I don't think it'll export audio.
Michael Cheung
Editor/Assistant Editor/DIT
http://www.filmcutter.co.uk
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• | | | | | Re: creating mpeg-2 - why no audio?
by J. Tad Newberry on May 21, 2010 at 6:15:55 pm |
delivery specs specify "CBR Bitrate: 8Mbs" and the default Compressor setting was two pass VBR, avg 15Mbps and Max at 20Mbps, so it seems to be making the video at a high enough quality, though on playback, it sure doesn't look like something i would want to air! : )
Thanks again!
J. Tad Newberry
Big Ya Productions
Mac Pro 2.66 GHz Quad-Core
3 GB RAM
http://www.bigya.tv
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• | | | | | Re: creating mpeg-2 - why no audio?
by Dave LaRonde on May 21, 2010 at 6:19:05 pm |
[J. Tad Newberry] "...delivery specs specify "CBR Bitrate: 8Mbs""
Wow, that IS low. I've seen 'em as high as 35Mbs, hence my concern.
Dave LaRonde
Sr. Promotion Producer
KCRG-TV (ABC) Cedar Rapids, IA
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• | | | |  | Re: creating mpeg-2 - why no audio?
by Steve Eisen on May 21, 2010 at 7:47:18 pm |
Episode Pro from Telestream!
Steve Eisen
Eisen Video Productions
Vice President
Chicago Final Cut Pro Users Group
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• | | | |  | Re: creating mpeg-2 - why no audio?
by Michael Gissing on May 22, 2010 at 1:00:15 am |
8Mbs is normal for SD if that is what is required. If the specs ask for CBR 8Mbs, why are you using VBR at higher bit rates?
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• | | | |  | Re: creating mpeg-2 - why no audio?
by Rafael Amador on May 23, 2010 at 2:26:45 am |
Hi Tad,
The audio is there, but QT can not play it.
Play the file with MPGStreamclip to check that.
rafael
http://www.nagavideo.com
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• | | | |  | Re: creating mpeg-2 - why no audio?
by Roy Stewart on Sep 1, 2010 at 2:45:10 pm |
I am trying to make an MPEG-2 file from a quicktime movie using Compressor and the video is fine but there is no audio. I have tried to make it exporting straight from Final Cut Pro and also just as a self contained quicktime movie - and no joy either way. Anyone any ideas? All suggestions very, very welcome.
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• | | | | | Re: creating mpeg-2 - why no audio?
by Dave LaRonde on Sep 1, 2010 at 3:45:43 pm |
What preset did you use in Compressor? Did it have audio? What kind of audio?
Dave LaRonde
Sr. Promotion Producer
KCRG-TV (ABC) Cedar Rapids, IA
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• | | | | | Re: creating mpeg-2 - why no audio?
by Roy Stewart on Sep 1, 2010 at 4:45:19 pm |
Hi Dave
I used both Programme and Transport Streams, both unsuccessfully. Video in MPEG2 fine - but no audio.
The audio is just part of the preset MPEG audio @ 48kHz.
To give the full background. I filmed on XDCAM HD and made the movie in final Cut Pro an an HD movie. I have tried making self contained and reference qt movie files and imported them to Compressor - and also exported direct from FC Pro into Compressor. Nothing works. The resultant MPEG2 video is fine - but the audio just disappears. HELP!!!!!!!!!
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• | | | | | Re: creating mpeg-2 - why no audio?
by Dave LaRonde on Sep 1, 2010 at 5:11:26 pm |
Eliminate the obvious: make sure the files you esport from FCP actually HAVE audio. If they don't, you can looks elsewhere for the problem.
And you might give MPEG Streamclip a shot, too.
Dave LaRonde
Sr. Promotion Producer
KCRG-TV (ABC) Cedar Rapids, IA
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• | | | | | Re: creating mpeg-2 - why no audio?
by Roy Stewart on Sep 1, 2010 at 5:19:52 pm |
Yep. The files I am exporting do have audio. I'll try MPEG Streamclip as you suggest. Thank you.
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• | | | | | Re: creating mpeg-2 - why no audio?
by Roy Stewart on Sep 1, 2010 at 5:26:40 pm |
Yep. The files I am exporting do have audio. I'll try MPEG Streamclip as you suggest. Thank you. I have just had a look at MPEG Streamclip but it doesn't seem to export to MPEG-2, just MPEG-4.
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• | | | |  | Re: creating mpeg-2 - why no audio?
by David Roffman on Mar 14, 2012 at 5:17:29 pm |
Funny running across this now, a year later.
I was having the exact same problem, but once I tried program stream, the audio came with it. I have no idea why.
Now I'm trying to figure out how to get my MPEG-2 files authored to a DVD.
Any suggestions?
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