On 12/29/2020 05:09 AM, Paul B Mahol wrote:
On Tue, Dec 29, 2020 at 11:06 AM Mark Filipak (ffmpeg) <markfili...@bog.us>
wrote:

On 12/29/2020 04:28 AM, Paul B Mahol wrote:
Try this:

"separatefields,select=eq(mod(n\,4)\,0)+eq(mod(n\,4)\,3),weave"

That plays at 15/1.001 FPS. The fields aren't right, either. That modulo
doesn't make sense to me.


That INTERLACES, have you followed documentation at all?

Yes, I know it interlaces (weaves). If a top field is followed by a top-field, then when they're interlaced it will be a full frame, line doubled. That's half of what I want.

[A/a] -> [A][a] -> [A][A][a][a] -> [A/A][a/a]

From your other reply, I'll try stack, but I think it makes one field above the other field, not interlaced. Doc: "Stack input videos vertically."


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