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Fix video aspect ratio calculation

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This commit is contained in:
Nicolas Le Goff 2014-06-10 12:27:04 +02:00
commit c51ccf4f2c
2 changed files with 44 additions and 10 deletions
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7
src/FFMpeg/FFProbe/DataMapping/Stream.php
View file

@ -72,7 +72,12 @@ class Stream extends AbstractData
if (null !== $displayRatio && null !== $sampleRatio) {
if ($sampleRatio[0] !== 1 && $sampleRatio[1] !== 1) {
$width = round($width / $sampleRatio[0] * $sampleRatio[1] * $displayRatio[0] / $displayRatio[1]);
if (null !== $width && null !== $height) {
// stretch video according to pixel sample aspect ratio
$width = round($width * ($sampleRatio[0] / $sampleRatio[1]));
// set height according to display aspect ratio
$height = round($width * ($displayRatio[1] / $displayRatio[0]));
}
}
}

47
tests/FFMpeg/Tests/FFProbe/DataMapping/StreamTest.php
View file

@ -77,16 +77,19 @@ class StreamTest extends TestCase
);
}
public function testGetDimensionsFromVideoWithDisplayRatio()
/**
* @dataProvider providePropertiesForDimensionsExtraction
*/
public function testGetDimensionsFromVideoWithDisplayRatio($data)
{
$stream = new Stream(array('codec_type' => 'video', 'width' => 960, 'height' => 720, 'sample_aspect_ratio' => '4:3', 'display_aspect_ratio' => '16:9'));
$this->assertEquals(new Dimension(1280, 720), $stream->getDimensions());
}
public function testGetDimensionsFromVideoWith11SampleRatio()
{
$stream = new Stream(array('codec_type' => 'video', 'width' => 1920, 'height' => 1080, 'sample_aspect_ratio' => '1:1', 'display_aspect_ratio' => '16:9'));
$this->assertEquals(new Dimension(1920, 1080), $stream->getDimensions());
$stream = new Stream(array(
'codec_type' => 'video',
'width' => $data['width'],
'height' => $data['height'],
'sample_aspect_ratio' => $data['sar'],
'display_aspect_ratio' => $data['dar']
));
$this->assertEquals(new Dimension($data['result_width'], $data['result_height']), $stream->getDimensions());
}
/**
@ -102,4 +105,30 @@ class StreamTest extends TestCase
{
return array(array('0:1'), array('2:1:3'));
}
public function providePropertiesForDimensionsExtraction()
{
return array(
array(
array('width' => '960', 'height' => '720',
'sar' => '4:3', 'dar' => '16:9',
'result_width' => '1280', 'result_height' => '720'),
),
array(
array('width' => '1920', 'height' => '1080',
'sar' => '1:1', 'dar' => '16:9',
'result_width' => '1920', 'result_height' => '1080'),
),
array(
array('width' => '640', 'height' => '480',
'sar' => '75:74', 'dar' => '50:37',
'result_width' => '649', 'result_height' => '480'),
),
array(
array('width' => '720', 'height' => '576',
'sar' => '52:28', 'dar' => '16:9',
'result_width' => '1337', 'result_height' => '752'),
),
);
}
}