Hi.
In article <CADQbU6-2AE_Qwo6+D9qTQS_b53w+jnxUZ8o+=UCYa=vdvpf...@mail.gmail.com>,
Martijn van Beurden<mva...@gmail.com> wrote:
> As far as I know FLAC should not change image data. Could you find out
> which specific bytes differ, and whether this is consistent with
> different PNG files?
I think I got to the bottom of this. The bit of the image that's changing is
the timestamp in the header (the tIME chunk). This makes sense as when I
retrieve the image and resize it, I suspect the library that does the
resizing it writing a new timestamp in there.
Apologies for the noise, I think blaming it on the FLAC++ library was a bit
premature. Sorry!
Andy
>
> Op di 6 dec. 2022 om 17:42 schreef Andy Hawkins <a...@gently.org.uk>:
>>
>> Hi,
>>
>> I'm writing PNG data to a FLAC file using libFLAC++, and when I read it back
>> what I get seems to be different when I compare it byte for byte. It seems
>> to be the same size, and looks the same when I compare the images visually,
>> but the actual bytes seem to be different.
>>
>> Is there some modification done to the image when it's stored in the FLAC
>> file?
>>
>> Thanks
>>
>> Andy
>>
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