[Libav-user] Problems with ffvhuff and huvvyuv

[Paul B Mahol]

On 10/16/13, Bruce Wheaton <bruce at spearmorgan.com> wrote:
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> Bruce
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>> On Oct 16, 2013, at 6:52, James Board <jpboard2 at yahoo.
>> Does my question make sense to anyone?  Or am I doing something very
>> wrong
>> with libav and seeking?  Has anyone seen this behavior before when you
>> seek to
>> position N in a file, but the first few frames that get decoded are lower
>> than N?
>> Is there a better way?
>
> Yes, this is known and basically unavoidable with most codecs. Each frame is
> dependent on one or more frames that came before. Even if a system made this
> seem to not happen, from your point of view, it still would be happening in
> the background.
>
> I mentioned this problem when discussing multi threading.
>
> The only workaround is to use intra-frame only compression, so all frames
> are independent. Some codecs you listed always work that way.

ffvhuff is intra only.

>
> Bruce
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>> Does this have anything to do with cached frames, or is that another
>> issue?
>>
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>