[FFmpeg-devel] [PATCH] Adds support parsing the QuickTime Metadata Keys.

Derek Buitenhuis derek.buitenhuis at gmail.com
Fri Oct 23 01:01:18 CEST 2015

On 10/22/2015 11:28 PM, Tinglin Liu wrote:
> 2) The key and value are stored separately for each key-value pair. 'keys'
> atom stores the key name table, while 'ilst' atom stores the values
> corresponding to the indices in the key table. And since they are stored in
> two different atoms, I have to store the name and count of the keys in the
> MOVContext, and use them when parsing 'ilst'.

Right. For some reason I thought it was begin exported. It's clear to me now.

>>> +            union av_intfloat32 val;
>>> +            val.i = avio_rb32(pb);
>> I'm not entirely sure of the portability of this code. Would this not fail
>> on
>> any system without IEEE floats?

Still not sure about this, but I see such stuff used elsewhere in avformat,
via av_int2float, so I guess we probably don't care. Someone correct me if
I am mistaken.

- Derek

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