[Vorbis] ov_open_callbacks takes so much time to open 210 MB OGG file

Pavel Nikitenko pavnsw at gmail.com
Fri Dec 7 11:01:13 PST 2012


Hi Gregory and Monty,

Did you get the 210 MB OGG file I sent previous email?
https://www.dropbox.com/s/rb86nn1yfehp7go/test4.ogg

What is your opinion about it?
Is there  a way how to improve performance of ov_open_callbacks?

Thanks and regads,
Pavel

On 6.12.2012 12:28, xiphmont at xiph.org wrote:
> May we see an example file?  Stopping and starting a file as you
> describe is essentially creating a new 'chapter' with every step.  I
> am wondering if this is a file with thousands of chapters that have to
> be individually queried...
>
>> Well— files with a lot of chaining fundamentally take a bit longer to open.
>>
>> Opusfile has a lot of intelligence for doing this rapidly that vorbisfile lacks,
>> so there may be an good opportunity for improvement there.
> Yes, another reason an example file might be useful.
>
> Monty



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