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    prores, xavx-i and photo Jpeg
    #1
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    I am playing with codecs, on my windows machine I can export from xavc-i to photo jpeg. These files are large, but when I encodee them to Prorers the files become even larger 500 mb vs 1,4GB that seems overkill for 20 seconds of footasge (4K).

    Or isn't it?


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    Senior Member Cary Knoop's Avatar
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    Overkill for what? For what purpose do you convert those files?


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    File size, I have to transfer these files, takes ages even with fast internet.


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    Senior Member Cary Knoop's Avatar
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    My question is why do you need to transcode those files?

    It is just not clear to me what the problem is.


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    It is the preferred codec for some stock agencies. I thought it would be smaller then photo Jpeg. But is isn't.


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    I upload all stock footage as ProRes and I don't worry about the file size. It is what it is. I have no doubt that ProRes is preferred over PhotoJPG by higher-end customers, and it is better to give customers what they want to buy rather than what would be easier to upload. All the major stock footage agencies accept ProRes.


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    Senior Member Cary Knoop's Avatar
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    Quote Originally Posted by Publimix View Post
    It is the preferred codec for some stock agencies. I thought it would be smaller then photo Jpeg. But is isn't.
    The compression/quality ratios of the various intra-frame compression methods are only marginally different.

    The big compression leverage comes when you allow inter-frame compression.


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    #8
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    Hi Doug,
    Shutterstock and adobe have the same face detection algorithm. This clip was rejected by both because it had no model release.
    Knipsel.jpg


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    #9
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    Well, get a model release next time! The key is to ask nicely and most animals will sign. Give 'em carrot.
    On a different topic, I wonder if face detect AF on my Z280 would track on that face.


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    #10
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    Any tip for Stock footage export for us Windows users?

    That photo-jpeg workflow kinda put me off doing more stock work.


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