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FFmpeg-6036
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/ FFmpeg::Codec

NAME

FFmpeg::Codec - A media stream (co)mpression / (dec)ompression algorithm

SYNOPSIS

$codec = FFmpeg->codec('msmpeg4');

#or perhaps
$ff = FFmpeg->new();
#...
$sg = $ff->create_streamgroup(); #see FFmpeg::StreamGroup
$st = ($sg->streams())[0];       #see FFmpeg::Stream
$codec = $st->codec

DESCRIPTION

Objects of this class are not intended to be instantiated directly by the end user. Access FFmpeg::Codec objects using methods in the FFmpeg class.

Instances of this class represent a compression/decompression algorithm, or codec, that is supported by FFmpeg-C. Audio and video streams use separate codecs. If a codec exists, it means that FFmpeg-C can use it to do at least one of:

read audio or video in the codec's format
write audio or video in the codec's format

Call "can_read()" and "can_write()" to see what functionality is supported for a given codec. Call "is_video()" and "is_audio()" to determine if a codec is capable of encoding/decoding audio or video.

FEEDBACK

See "FEEDBACK" in FFmpeg for details.

AUTHOR

Allen Day <allenday@ucla.edu>

COPYRIGHT AND LICENSE

Copyright (c) 2003-2004 Allen Day

This library is released under GPL, the Gnu Public License

APPENDIX

The rest of the documentation details each of the object methods. Internal methods are usually preceded with a '_'. Methods are in alphabetical order for the most part.

new()

Usage

my $obj = new FFmpeg::Codec();

Function

Builds a new FFmpeg::Codec object

Returns

an instance of FFmpeg::Codec

Arguments

All optional, refer to the documentation of "new()" in FFmpeg, this constructor operates in the same way.

init()

Usage

$obj->init(%arg);

Function

Internal method to initialize a new FFmpeg::Codec object

Returns

true on success

Arguments

Arguments passed to new

can_read()

Usage

$obj->can_read(); #get existing value

Function

FFmpeg-C can decode this codec?

Returns

a boolean

Arguments

none, read-only

can_write()

Usage

$obj->can_write(); #get existing value

Function

FFmpeg-C can encode this codec?

Returns

a boolean

Arguments

none, read-only

id()

Usage

$obj->id(); #get existing value

Function

FFmpeg-C's internal ID for this codec

Returns

value of id (a scalar)

Arguments

none, read-only

is_audio()

Usage

$obj->is_audio(); #get existing value

Function

does this codec encode/decode audio streams?

Returns

a boolean

Arguments

none, read-only

is_video()

Usage

$obj->is_video(); #get existing value

Function

does this codec encode/decode video streams?

Returns

a boolean

Arguments

none, read-only

name()

Usage

$obj->name(); #get existing value

Function

codec's name

Returns

value of name (a scalar)

Arguments

none, read-only