NAME¶

SReview::Video::ProfileFactory - Create an output profile from an input video.

SYNOPSIS¶

    use SReview::Video;
    use SReview::Videopipe;
    use SReview::Video::ProfileFactory;
    package SReview::Video::Profile::myprofile;
    use Moose;
    extends SReview::Video::Profile::webm;
    has '+audio_samplerate' => (
        builder => '_probe_my_audiorate',
    );
    has '+audio_codec' => (
        default => 'vorbis',
    );
    sub _probe_exten {
        return 'my.webm',
    }
    sub _probe_my_audiorate {
        my $self = shift;
        return $self->reference->audio_samplerate / 2;
    }
    no Moose;
    package main;
    my $input = SReview::Video->new(url => "foo.mp4");
    my $profile = SReview::Video::ProfileFactory->create("myprofile", $input);
    my $output = SReview::Video->new(url => "foo." . $profile->exten, reference => $profile);
    SReview::Videopipe->new(inputs => [$input], output => $output)->run();

DESCRIPTION¶

"SReview::Video::Profile::Base" is a subclass of SReview::Video, but with a number of the probing methods overridden so that they return values that are not in line with the reference of the given video.

The "SReview::Video::ProfileFactory"'s "create" method is a simple helper to:

• ensure that the relevant "SReview::Video::Profile::profile" module has been loaded
• create an "SReview::Video" subclass of the right type, with reference set to the passed input "SReview::Video" object.

CREATING NEW PROFILES¶

It is possible to create a new profile by extending an existing one. The "myprofile" profile in the above example shows how to do so. Any property that is known by SReview::Video can be overridden in the manner given.

To create a new profile, one can use the "extra_profiles" configuration setting; however, profiles created in this manner can only hardcode values, and cannot vary any parameters based on the input file. To create a profile that can do so, when the new profile just changes a minor detail of an existing profile, extend that profile and change the detail which you want to change. To create a new profile from scratch, extend the "Base" profile (see below).

PRE-EXISTING PROFILES¶

The following profiles are defined by "SReview::Video::ProfileFactory":

SEE ALSO¶

SReview::Video