[FFmpeg-devel] [PATCH 1/2] avfilter/vf_zscale: add slice threading

[Paul B Mahol]

On 5/31/19, Lynne <dev at lynne.ee> wrote:
>
>
>
> May 31, 2019, 2:16 PM by onemda at gmail.com:
>
>> On 5/31/19, Lynne <dev at lynne.ee> wrote:
>>
>>> May 31, 2019, 11:45 AM by onemda at gmail.com <mailto:onemda at gmail.com>:
>>>
>>>> Signed-off-by: Paul B Mahol <> onemda at gmail.com
>>>> <mailto:onemda at gmail.com>>
>>>> >
>>>> ---
>>>> libavfilter/vf_zscale.c | 335 +++++++++++++++++++++++++---------------
>>>> 1 file changed, 214 insertions(+), 121 deletions(-)
>>>>
>>>
>>> This will create discontinuities between each slice.
>>>
>>
>> Have you actually tried it?
>>
>> I had and its just fine.
>>
>
> Bitexact results with non-nearest scaling? Should be even worse with
> anything better than bilinear.

Results are always bitexact. It just not bitexact with single
threading and differences are irrelevant.

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