Mailing List AE-List@media-motion.tv ? Message #50835
From: Perry Mitchell <perry.mitchell@gmail.com>
Subject: Re: [AE] codecs etc
Date: Wed, 18 Sep 2013 09:23:43 +0100
To: After Effects Mail List <AE-List@media-motion.tv>
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FYI - tried this codec (encoding to QuickTime in AE) and just as Michael says - it uses about half the bit rate of the Apple H264 with both set to '100%' quality. It also played fine in QTP on my MacPro but I didn't have a MacBook to hand which is what I'll probably use for my lectures. I tried the files on my office PC and the picture breaks up badly, seemingly a failure to decode correctly. The same PC plays the H264 file OK and I think I will use this for the job.
Thanks for all the input - I've learnt a lot. I didn't realise that the Apple H264 went up to 1080/60p and worked so well on an 'ordinary' laptop. One small mystery (for me) - if I jog through frames on broadcast HD video (e.g. BBC HD) which uses H264, then the GOP frames are presented out of sequence, which is apparently the way they are encoded. If I jog through these recordings they are correctly sequenced. Is that down to QTP correcting the sequence?
Perry Mitchell
Engineer
Farnham, Surrey
On 17/09/2013 06:20, Michael Hazarian wrote:
Here is the latest (last?) version of a quicktime accessible x264 codec. 


I've been using this evolution of x264 for years. As Brian mentioned, at low bit rates, it really excels. You do have to tune the parameters, but once you find the right mix, it is probably half the bit rate at low bit rates than many of the commercial options. Also, it is a very fast and appears to be efficient across multi processors.

I use it with MPEG Streamclip.


 
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