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Compression/Transcoding to diff file formats, which is a better source, IMX30 or uncompressed AVI/Quicktime?
Hi guys,
I just came across this requirement from a digital delivery service for TVCs. They ask for an IMX30 to be uploaded on to their cloud, which then gets recompressed/transcoded to different file formats such as DVCPro50, DV25, IMX50, etc, and sometimes even get dubbed onto a BetacamSP tape.
Now I’ve started to question this process as I’ve always believed that starting from the best source, such as an uncompressed file, is always better than starting with a lossy codec such as IMX30. Terms such as compounded compression, digital generation loss, and such, come to mind.
Here’s a link to the complete article:
Am I right in thinking this article is more of a marketing move rather than an attempt to be technicality accurate and transparent? Would appreciate inputs. Thanks
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2 Replies
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You are certainly right that an uncompressed delivery would make a cleaner source for transcodes.
However, the ideal format is the one in the delivery spec.
Having written many delivery specs myself, I’ll mention that after a certain point of “good enough,” workflow, automation and playback realities trump theoretically better (but often perceptually invisible) visual quality improvements.
Walter Soyka
Designer & Mad Scientist at Keen Live [link]
Motion Graphics, Widescreen Events, Presentation Design, and Consulting
@keenlive | RenderBreak [blog] | Profile [LinkedIn] -
Thank you for the reply Walter. You are correct, IMX30 is an ideal delivery format.
Personally, do you think IMX30 is a “good enough” codec to work with for lossy recompression? If not, what would be your bare minimum?
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