[Slackbuilds-users] ffmpeg updates

Christoph Willing chris.willing at iinet.net.au
Wed Feb 24 02:14:47 UTC 2016

On 24/02/16 10:39, Miguel De Anda wrote:
> i started trying to build ffmpeg and as many dependencies as possible
> from what's on the website first before trying the newer one but i ran
> into issues. i was building this against a new install (about 2 weeks
> old) running all current and no 32-bit compat. libs using sbopkg:
> sbopkg -i decklink-sdk
> Found Blackmagic_DeckLink_SDK_10.1.4.zip in /var/cache/sbopkg.
> Checking MD5SUM:
>    MD5SUM check for Blackmagic_DeckLink_SDK_10.1.4.zip ... FAILED!
>      Expected: 16fbc2f49dc62fecac15835c538f78d4
>      Found:    561847ddc4780f347fbd0ee076573a98
> using the downloaded source results in...
> Do you want to use the downloaded decklink-sdk source:
> Blackmagic_DeckLink_SDK_10.1.4.zip in /var/cache/sbopkg?
> You can choose among the following options:
>   - (Y)es, keep the source and continue the build process;
>   - (N)o, delete the source and abort the build process; or
>   - (R)etry download and continue the build process.
> (Y)es, (N)o, (R)etry?: y
>      Keeping the source and continuing.
> Building package for decklink-sdk...
> Archive:  /var/lib/sbopkg/SBo/14.1/development/decklink-sdk/Blackmagic_DeckLink_SDK_10.1.4.zip
>    End-of-central-directory signature not found.  Either this file is not
>    a zipfile, or it constitutes one disk of a multi-part archive.  In the
>    latter case the central directory and zipfile comment will be found on
>    the last disk(s) of this archive.
> unzip:  cannot find zipfile directory in one of
> /var/lib/sbopkg/SBo/14.1/development/decklink-sdk/Blackmagic_DeckLink_SDK_10.1.4.zip
> or
>          /var/lib/sbopkg/SBo/14.1/development/decklink-sdk/Blackmagic_DeckLink_SDK_10.1.4.zip.zip,
> and cannot find
> /var/lib/sbopkg/SBo/14.1/development/decklink-sdk/Blackmagic_DeckLink_SDK_10.1.4.zip.ZIP,
> period.

Unfortunately Blackmagic Design company has changed their download 
mechanism to use only a web page that requires name & email details of 
the downloader; then issues some sort of download authority so that wget 
could be used. However that authority it is time limited, so not worth 
adding that to the .info file.

It has been that way for a while for newer versions and I held the 
version back at 10.1.4 purely because it was still directly 
downloadable. Looks like they've eventually realised and closed that 

This is, more or less, the same situation as the SlackBuild for jdk; the 
DOWNLOAD file must be downloaded separately first.

An alternative would be to host the download file somewhere else like 
slackbuildsdirectlinks but there may be legal implications to consider. 
Any insights welcome ...


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