Need Quick Assist with Comcast Upload Problem.

[Ken Matson]

little more info ….. media info shows it as frame rate of 59.94 with “original frame rate” of 29.97 ????? If I export at 14.985, it shows frame rate of 29.97 with original frame rate of 14.985, but looks horrible … like 14 fps!

What am I missing here?

KenM
Sound Works R&P

[John Rofrano]

It’s hard to help without knowing more about what you are doing.

Can you answer these questions?

• What are the attributes of your source video? (resolution, frame rate, video format, etc.)
• What are your project settings? (a screen shot would be great)
• What render type and template are you using?
• What are the video/audio specifications that Comcast is expecting?

From that we can try and figure out what might be going on and point you in the right direction.

~jr

http://www.johnrofrano.com
http://www.vasst.com

[Ken Matson]

Video is mostly Vegas text, some png/jpg stills, and a couple short clips of 1080 quicktime mov from a stock site.

Project is set as 1080i upper 29.97.
I export it the same way … 29.97 upper, 1080i and then meidainfo will show it as frame rate of 54.94 with “original frame rate” of 29.97. Here are specs from vegas template.

“Audio: 192 Kbps, 48,000 Hz, 16 Bit, Stereo, AAC
Video: 29.970 fps, 1920×1080 Upper field first, YUV, 36 Mbps
Pixel Aspect Ratio: 1.000”

Comcast wants 1080i/upper at 29.97.

HTH! and THANKS!

KenM
Sound Works R&P

[Angelo Mike]

Does the Comcast spec sheet say what codec and container to render to? I recently had to do this and I had to render in MPEG2 for Comcast.

[Ken Matson]

Well – on the phone they said they take mp4 (which is what I’m doing ) though it does say mpeg 2 on their spec sheet.

The real question I have at this point is why does vegas make a 59.94 frame rate when I export an mp4 at 29.97?

[Angelo Mike]

Can you post screencaps of your media properties, project settings, and render settings, and post them?

[Mark Thompson]

Ken,
I found a spec for: Comcast AdDelivery Lite File Format Specification. Are you using that spec? In that it highlights MPEG-2 Transport Stream as the recommended format. The closest to that I could find was the: Sony AVC/MVC (*.mp4,*.mt2s,*.avc) Template. Then pick: AVCHD 1920×1080-60i. This says its frame rate is 29.970 (NTSC).

On that sheet they imply that Progressive is acceptable (1280×720)! Otherwise they propose 3 QuickTime formats.
Of course ignore that if that is not the spec you are required to comply with.
mark

[Ken Matson]

Thanks … but question … how is AVC the same thing as MPEG-2 ? When I think of MPEG-2 I think of an mpg file used for a DVD. N’est pas?

I get really confused between all this crap and what goes with what, what is part of, or the same as, or imbedded in something else, etc.

KenM
Sound Works R&P

[Mark Thompson]

Ken, MPEG is a standards committee, the Motion Picture Experts Group. They publish standards for encoding video/audio, e.g. MPEG-1, MPEG-2. MPEG-4,… these are usually ever more sophisticated. MPEG-2 Transport Stream is a container format for wrapping all of the above standards (and more besides). AVCHD is the latest format, it stands for Advanced Video Codec High Definition.
Upon further review … although you do need MPEG-2 TS and my suggested template will give you that, I now don’t believe that will help.

Have you tried the Mainconcept 1080-60i Template ? HDV because that uses MPEG-2 TS. ?

I looked on their Website and they publish a spec for how to use Vegas. It is not a public one so you will have to access it.