On 09/02/10 04:49, Thomas Worth wrote:
On Mon, Feb 8, 2010 at 3:15 PM, Ronald S. Bultje<[email protected]> wrote:
Hi,
On Wed, Jan 27, 2010 at 4:20 PM, Thomas Worth<[email protected]> wrote:
CODEC_ID_H264
CODEC_ID_FFH264
FFH264 (for encoding) would be the native FFmpeg encoder, whereas H264
(default) would be the x264 encoder. For decoding, it always uses the
built-in decoder. So none of this matters for the subject at hand.
Regarding your original post, I'm sceptical. A simple delta between
the two images on your blog shows differences (dither-related?) only
around thearea right above the tire. Calling this dithering an
improvement in quality goes way too far, imo.
Yeah, it's starting to look more and more like QuickTime is taking the
liberty of adding noise to its decompression output to cover up the
compression artifacts. Subjectively, this may increase quality /
aesthetic value, but this should be an option. I mean, if I want noise
I'll add it myself, thank you. I don't know if there's a way through
the QuickTime API to disable this behavior, but there should be.
You were also testing against Adobe After Effects and Final Cut Pro -
have you compared the output of QuickTime to those to see the
difference? I would be very surprised if a professional grade
application were to add noise without request.
Regards,
Rob
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