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Re: MPEG2 encoding in compressor bitrate issues

COW Forums : Compression techniques

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Daniel LowRe: MPEG2 encoding in compressor bitrate issues
by on Oct 15, 2009 at 10:34:56 pm

I'd be very surprised if Apple accept your content, it's possible if the content is unavailable from another source, but the reason Apple ask for 15Mb/s MPEG-2 is because they want very high quality material while still keeping it relatively 'transportable'. As you are ripping from DVD you are simply not giving them that.

I've designed systems for delivery to Apple and I'd always start with at least 50Mb/s I-Frame MPEG-2 for standard def content, this is considered as high as you'd want to go for broadcast quality source material.

What you are doing is taking MPEG-2 that is likely to be at best 5Mb/s and 'trans-rating' that to 15Mb/s; a largely pointless exercise as far as quality is concerned - you can't add quality.

I'd wait to hear back from Apple and then we can take it from there.

__________________________________________________________________
"There's no chance that the iPhone is going to get any significant market share. No chance."

Steve Ballmer To USA Today: 30 April 2007

"We and Apple are neck and neck and we're chasing the two
other players,"

Steve Ballmer, referring to Nokia and Research in Motion. October 6th 2009


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