[FFmpeg-devel] [RFC] removing libmpcodecs for reuniting purposes.

[Kieran Kunhya]

On 18 August 2014 14:37, Ivan Kalvachev <ikalvachev at gmail.com> wrote:
> On 8/18/14, Kieran Kunhya <kierank at obe.tv> wrote:
>> On 18 August 2014 02:26, Ivan Kalvachev <ikalvachev at gmail.com> wrote:
>>
>>> ilpack - interlaced yuv420-> yuv422 converter. Scale should be able to
>>> do that too.
>>
>> Scale doesn't have much (any?) knowledge of interlaced chroma.
>> That said I could probably port this filter to lavfi because it would
>> be quite useful to me. I wasn't actually aware it existed.
>
> Hum?
> "
> ‘interl’
>     Set the interlacing mode. It accepts the following values:
>     ‘1’        Force interlaced aware scaling.
>     ‘0’        Do not apply interlaced scaling.
>     ‘-1’        Select interlaced aware scaling depending on whether
> the source frames are flagged as interlaced or not.
>     Default value is ‘0’.

That is totally different to what the ilpack filter does. The ilpack
filter converts from yuv420 to yuyv (422). vf_scale doesn't have any
knowledge of interlaced chroma at all (and I sincerely hope nobody
tries adding it to swscale).