Error When Reading MP4 File

[tetrahydra]

Hello,

I am reading an MP4 file, and I am getting this error:

Duration: 612.437
Warning: Invalid argument supplied for foreach() in /Applications/XAMPP/xamppfiles/htdocs/mediametadata/src/Adapters/Mp4Adapter.php on line 14

Warning: Invalid argument supplied for foreach() in /Applications/XAMPP/xamppfiles/htdocs/mediametadata/src/Adapters/Mp4Adapter.php on line 21
Dimensions: x
Warning: Invalid argument supplied for foreach() in /Applications/XAMPP/xamppfiles/htdocs/mediametadata/src/Adapters/Mp4Adapter.php on line 28
Framerate:

[wapmorgan]

Can you provide this file?

[wapmorgan]

@tetrahydra ping

[tetrahydra]

the code:

``
require('BinaryStream.php');

require('FileTypeDetector/ContentStream.php');
require('FileTypeDetector/Detector.php');
require('FileTypeDetector/TerminalInfo.php');

require('src/Exceptions/Exception.php');
require('src/Exceptions/FileAccessException.php');
require('src/Exceptions/ParsingException.php');

require('src/AudioAdapter.php');
require('src/ContainerAdapter.php');
require('src/VideoAdapter.php');

require('src/Adapters/Mpeg4Part12Adapter.php');
require('src/Adapters/Containers/MatroskaContainer.php');
require('src/Adapters/AacAdapter.php');
require('src/Adapters/AmrAdapter.php');
require('src/Adapters/AsfAdapter.php');
require('src/Adapters/AviAdapter.php');
require('src/Adapters/FlacAdapter.php');
require('src/Adapters/MkvAdapter.php');
require('src/Adapters/Mp3Adapter.php');
require('src/Adapters/Mp4Adapter.php');
require('src/Adapters/OggAdapter.php');
require('src/Adapters/WavAdapter.php');
require('src/Adapters/WmaAdapter.php');
require('src/Adapters/WmvAdapter.php');

require('src/MediaFile.php');

try {
$media = wapmorgan\MediaFile\MediaFile::open('2018-03-30 114535am.mp4');

if ($media->isAudio()) {
// calls to AudioAdapter interface
echo 'Duration: '.$media->getAudio()->getLength().PHP_EOL;
echo 'Bit rate: '.$media->getAudio()->getBitRate().PHP_EOL;
echo 'Sample rate: '.$media->getAudio()->getSampleRate().PHP_EOL;
echo 'Channels: '.$media->getAudio()->getChannels().PHP_EOL;
}
// for video
else {
// calls to VideoAdapter interface
echo 'Duration: '.$media->getVideo()->getLength().PHP_EOL;
echo 'Dimensions: '.$media->getVideo()->getWidth().'x'.$media->getVideo()->getHeight().PHP_EOL;
echo 'Framerate: '.$media->getVideo()->getFramerate().PHP_EOL;
}
} catch (wapmorgan\MediaFile\Exceptions\Exception $e) {
// not a media or file is corrupted
if ($e instanceof wapmorgan\MediaFile\Exceptions\ParsingException)
echo 'File is propably corrupted: '.$e->getMessage().PHP_EOL;
else if ($e instanceof wapmorgan\MediaFile\Exceptions\FileAccessException) {}
// file is not a media. Just skip
}

``

[wapmorgan]

It seems to be ok. Which file used?

[wapmorgan]

To resolve this problem I need file sample.

[alex-enchi]

Hi, i can confirm that this bug exists
Video sample with this stream error:

http://file-examples.com/wp-content/uploads/2017/04/file_example_MP4_480_1_5MG.mp4

Another video example with File is propably corrupted: This file does not have "moov" box!

http://techslides.com/demos/sample-videos/small.mp4 from article

PS:
Checked these files with id3 lib, width/height info there is accurate

[justtoprogram]

Hi Guys,

I can confirm that I am also receiving this bug.

Message: Warning: Invalid argument supplied for foreach() in .../Plugins/vendor/wapmorgan/media-file/src/Adapters/Mp4Adapter.php on line 14

Here are is an example video I had been testing:

https://drive.google.com/file/d/1h_W80ocTKd-DBc8oowbdxAuaRts1p6X5/view?usp=sharing

Edit:

I was trying to figure out what information was being parsed to the foreach loop with a var_dump & it is was outputting null

[justtoprogram]

Hi Guys, how are we going for a fix on this?

It's getting kind of urgent for our organisation?

[alex-enchi]

@justtoprogram if it is really urgent i would suggest to use https://github.com/JamesHeinrich/getID3

[justtoprogram]

I was avoiding that because I like this library. It does only what I need it to do.

[alex-enchi]

I am as well, but had to use it.
I have strong suspect that the reason why it is not working properly is because around Mpeg4Part12Adapter.php#L173 code depends on order of the markers. And I think in real life it can be different. Unfortunately I don't have enough knowledge to fix this. Maybe someone else can dig it.

[wapmorgan]

Going to discover it ...

[wapmorgan]

Really, I don't have the wish and time to fix it.

[Maxyandr]

I have the same problem with the .mp4 files.
File is propably corrupted: This file does not have "moov" box!
I think, that error caused because the moov atom is located at the end of mp4 file.
If you scan your mp4 file with the utility https://gpac.github.io/mp4box.js/test/filereader.html.
You can see the location of the moov atom.

But the library try to find moov atom at the beginning. I will try to fix.

[elonchen]

add/edit lines in Mpeg4Part12Adapter.php may help

---

public function __construct

  $this->stream->saveGroup('mdat_box_header', array(
        'i:size' => 32,
        's:type' => 4,
        'i:extended_size' => 64,
    ));

---

protected function scan()

   if ($this->getNextBoxType() == 'free'){
        $this->stream->skip(8);
    }

    if ($this->getNextBoxType() == 'mdat') {
        $this->stream->mark('mdat');;
        $this->mdat = $this->stream->readGroup('mdat_box_header');
        $len = $this->mdat['size'] - 16;
        if ($this->mdat['size'] == 1)
            $len = $this->mdat['extended_size'] - 16;
        $this->stream->skip($len); 
    }