问题:

I'm attempting to install an up to date version of ffmpeg on an elastic beanstalk instance on amazon servers. I've created my config file and added these container_commands:

    container_commands:         01-ffmpeg:             command: wget -O/usr/local/bin/ffmpeg http://ffmpeg.gusari.org/static/64bit/ffmpeg.static.64bit.2014-03-05.tar.gz             leader_only: false         02-ffmpeg:             command: tar -xzf /usr/local/bin/ffmpeg             leader_only: false         03-ffmpeg:             command: ln -s /usr/local/bin/ffmpeg /usr/bin/ffmpeg             leader_only: false

Command 01 and 03 seems to work perfectly but 02 doesn't seem to work so ffmpeg doesn't unzip. Any ideas what the issue might be?

Thanks, Helen

回答1:

A kind person at Amazon helped me out and sent me this config file that works, hopefully some other people will find this useful:

packages:   yum:     ImageMagick: []     ImageMagick-devel: [] commands:   01-wget:     command: "wget -O /tmp/ffmpeg.tar.xz https://johnvansickle.com/ffmpeg/releases/ffmpeg-release-64bit-static.tar.xz"   02-mkdir:     command: "if [ ! -d /opt/ffmpeg ] ; then mkdir -p /opt/ffmpeg; fi"   03-tar:     command: "tar xvf /tmp/ffmpeg.tar.xz -C /opt/ffmpeg"   04-ln:     command: "if [[ ! -f /usr/bin/ffmpeg ]] ; then ln -sf /opt/ffmpeg/ffmpeg-3.4-64bit-static/ffmpeg /usr/bin/ffmpeg; fi"   05-ln:     command: "if [[ ! -f /usr/bin/ffprobe ]] ; then ln -sf /opt/ffmpeg/ffmpeg-3.4-64bit-static/ffprobe /usr/bin/ffprobe; fi"   06-pecl:     command: "if [ `pecl list | grep imagick` ] ; then pecl install -f imagick; fi"

Edit: Changed the commands to install a "more official" static build linked from the FFMPEG web site. Also, the former static build from Gusari does not seem available anymore.

回答2:

You can use a static build from ffmpeg gusari and the sources syntax to automagically download and extract the binaries from a static build tar to /usr/local/bin. Here's an extremely simple example that has worked for me:

sources:     /usr/local/bin: http://ffmpeg.gusari.org/static/64bit/ffmpeg.static.64bit.latest.tar.gz

回答3:

Check cloud-init logs for messages. On a Linux instance, that would be:

grep "03-ffmpeg" /var/log/eb-cfn-init.log

Also, you can log to another file to make errors easier to find:

command: ln -s /usr/local/bin/ffmpeg /usr/bin/ffmpeg >> /var/log/my-init.log

回答4:

Untested, but shouldn't it be

tar xzf /usr/local/bin/ffmpeg

without a minus?

回答5:

The version is not specified in the first command "01-wget ..." however, it is specified when linking the files. Since the publication of this the release has been changed from "ffmpeg-3.3.1-64bit-static" to "ffmpeg-3.3.3-64bit-static" there are two solutions to fix this problem:

specify the version for wget
strip the containing directory on unpacking.

03-tar: command: "tar xvf /tmp/ffmpeg.tar.xz -C /opt/ffmpeg --strip 1"

Here is the full script:

packages:   yum:     ImageMagick: []     ImageMagick-devel: [] commands:   01-wget:     command: "wget -O /tmp/ffmpeg.tar.xz https://johnvansickle.com/ffmpeg/releases/ffmpeg-release-64bit-static.tar.xz"   02-mkdir:     command: "if [ ! -d /opt/ffmpeg ] ; then mkdir -p /opt/ffmpeg; fi"   03-tar:     command: "tar xvf /tmp/ffmpeg.tar.xz -C /opt/ffmpeg --strip 1"   04-ln:     command: "if [[ ! -f /usr/bin/ffmpeg ]] ; then ln -s /opt/ffmpeg/ffmpeg /usr/bin/ffmpeg; fi"   05-ln:     command: "if [[ ! -f /usr/bin/ffprobe ]] ; then ln -s /opt/ffmpeg/ffprobe /usr/bin/ffprobe; fi"   06-pecl:     command: "if [ `pecl list | grep imagick` ] ; then pecl install -f imagick; fi"

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