[MacDV] Video conversion suggestions for iPad2

[Nick Scalise]

[Had to resend to get under the 5k limit, to bad spammers aren't  
treated as suspiciously.]

Yeah, if you plug in your numbers, what it gives back is what you  
should use. However, for 1024x576, 1775 Kbps seems a little small.

Here's what I plugged in (not counting audio):  16:9, 1025x576, 25fps  
(is that correct?), Fast motion, AVC/H.264 Codec and got 4290 Kbps. So  
there is discrepency there between our numbers. Changing the framerate  
to 15fps bumps it down to 2574 Kbps.

Now, remember that this is optimized for streaming, so it's probably  
the lower end of the spectrum, but it does produce good looking video.

When you get info on those streams, the .ts files, they are MPEG2,  
(dvd codec) and it requires higher bit rates for same quality.

So, you have two starting points here. The bit rate from the MPEG2 ts  
files, and the recommendation from the calculator.

I would suggest transcoding just a few minutes of the video, maybe a  
scene that has lots of action, color change etc. at different rates  
and see what is tolerable for your tastes, then go from there. Once  
you get a bit rate that is acceptable, you can use that bitrate from  
then on.

On Oct 10, 2011, at 5:39 AM, Conlon Brett wrote:

> Thanks for the suggestions, Nick!
>
> I downloaded the app and have set up all my options.
>
> I'm not sure if the below screenshot will make it to the list or get  
> stripped out so I'll give it a go.
>
> Just in case it doesn't, the video bitrate shows as 1775Kbps  
> (=1.73Mbps). So you're saying that this should be my designated  
> bitrate?
>
> When I review the bitrate on some of my recordings video (opened in  
> MPEG Streamclip then Get Info) I can see bitrate values like 13Mbps  
> (Amazing Race) and 10Mbps (Mythbusters) and 15Mbps (The Pink Panther  
> Strikes Again). That seems much higher than the Adobe app reports.
>
> Here's the screenshot:
>
> 	[I had to resend this email with the screenshot stripped coz it sat  
> waiting for the listmum's approval (WHICH NEVER CAME!!!!!)]
>
> Anyway, I'm all ears for your suggestions.

--
Nick Scalise
nscalise at gmail.com