MPEG 1/2 (MPGV) Codec? MPG movie won't play in QT

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MPEG 1/2 (MPGV) Codec? MPG movie won't play in QT

I have been given several video to encode, however, I cannot view these source videos in QT or in MPEG Streamclip. In QT the screen is black with no audio and in MPEG Streamclip the screen is white with no audio. This makes me think that I am missing a codec. I can open the videos in VLC and when I look under "Media Information" it tells me that the codec is MPEG 1/2 (MPGV). I have searched online and haven't found anything. I have the MPEG 2 component, I have Perian installed (it's installed twice, not sure if that is a problem), I have all the ProRes codecs plus many more. I am a video editor, so I have a lot of different codecs on my machine. Could the combination of different codecs be an issue? I tried opening the videos on a different machine (which has the mpeg2 component as well) and it didn't work. Can anyone help with this issue? I'm going crazy over here!

G5, Mac OS X (10.6.6), QT v10

Posted on Mar 28, 2011 10:30 AM

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Answer 1

Mar 28, 2011 10:37 AM in response to Ernest Gray

Have you tried seeing if compressor will allow you to convert it to something usable.

VLC does have some conversion capabilities but I've never been able to make them work.

You might have more luck on the pc side if you've got windows avaiable.

If you want to zap a small file to me, I'll see if I've got any tools that will work. My email is in my profile.

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Answer 2

Ernest Gray Author

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Mar 28, 2011 11:06 AM in response to Michael Grenadier

Michael,

Thanks for your response. I am able to convert to something usable, however, I would like to be able to view the source because I may need to edit things out before encoding to the final video. I am trying to save myself a step because these videos are huge (25-40GB) and they take a while to convert/compress. Basically, I am trying to save time and not double my workload. Unfortunately, due to privacy restrictions, I cannot send you a file, but I appreciate the offer.

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Answer 3

Mar 28, 2011 11:07 AM in response to Ernest Gray

If you're using compressor, you can select ins and outs. What are you using to do the conversion?

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Answer 4

Ernest Gray Author

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Mar 28, 2011 12:23 PM in response to Michael Grenadier

Right, but I still need to see the source so I know where to put the ins an outs. Do you think this is a codec issue or something else? I just want to be able to view the source videos in QT without having to convert with any application or to any other format.

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Answer 5

Mar 28, 2011 12:24 PM in response to Ernest Gray

what are you using to do the conversion? If you can convert the file in compressor, you can probably play it.

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Answer 6

darbypsnm

Level 3

730 points

Mar 28, 2011 1:08 PM in response to Ernest Gray

If these are muxed MPG-2 files used for broadcast(DG, FastChannel) they are most likely 4:2:2 color space.

To my knowledge there is currently no option for viewing 4:2:2 on a Mac. Have you tried converting a small portion just to see if you can covert them for viewing?

It may be a 2-step process to get what you actually need.

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Answer 7

Ernest Gray Author

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Mar 28, 2011 1:43 PM in response to Michael Grenadier

Mike,

I am using Episode Engine to convert to flash. Can't open with or view in Compressor.

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Answer 8

Ernest Gray Author

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8 points

Mar 28, 2011 1:44 PM in response to darbypsnm

That is a point I never considered and is probably the reason why I can't play them successfully through QT or MPEG Streamclip

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Answer 9

darbypsnm

Level 3

730 points

Mar 28, 2011 2:00 PM in response to Ernest Gray

If you want to edit with them and you can successfully export from Episode I would not use Flash. I believe there is a DVCPro HD and SD setting. Even a best quality H264 would be better than Flash. You will not want to edit with H264 but it could be converted to an edit friendly file.

I read your first post again and the no audio PB didn't register the first time. In my experience you can hear audio with 4:2:2 color space MPG-2 files.

Where did these files come from? Mac, PC?

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