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commit 169d516b35100af815275f3fa0f3311fbf4f833e Author: romainhedouin <[email protected]> AuthorDate: Fri Oct 16 16:35:47 2026 +0200 Commit: michaelni <[email protected]> CommitDate: Sun Nov 1 04:00:54 2026 +0000 avfilter/vf_nnedi: fix stale prescreener flags after pscrn=none The prescreener flags are only written when a prescreener is used. If pscrn is changed to none at runtime, the flags of the previous frames stayed in the buffer, so the predictor skipped those pixels and the output was wrong. Clear the flags when pscrn is none. Checked by switching pscrn with sendcmd: the frames after the switch now match a run that started with pscrn=none. Found during a code review sweep of ffmpeg using an LLM. Signed-off-by: romainhedouin <[email protected]> --- libavfilter/vf_nnedi.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/libavfilter/vf_nnedi.c b/libavfilter/vf_nnedi.c index 5c4b47e0a2..dff5915e21 100644 --- a/libavfilter/vf_nnedi.c +++ b/libavfilter/vf_nnedi.c @@ -631,6 +631,9 @@ static int filter_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) src_linesize * 2, srcbuf_stride, width, 1, in_scale); + if (!s->pscrn) + memset(prescreen_buf, 0, width); + for (int y = 0; y < slice_end - slice_start; y += 2) { if (s->pscrn > 0) s->prescreen[s->pscrn > 1](ctx, srcbuf + (y / 2) * srcbuf_stride + 32, -- To stop receiving notification emails like this one, please contact [email protected]. _______________________________________________ ffmpeg-cvslog mailing list -- [email protected] To unsubscribe send an email to [email protected]
