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Date: Fri, 14 Mar 2025 01:37:22 +0100
From: Michael Niedermayer <michael@niedermayer.cc>
To: FFmpeg development discussions and patches <ffmpeg-devel@ffmpeg.org>
Message-ID: <20250314003722.GH4991@pb2>
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Subject: Re: [FFmpeg-devel] [PATCH 1/4] avcodec/ffv1enc: add space for the
remap table to max_size
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On Sun, Mar 09, 2025 at 11:58:03PM +0100, Michael Niedermayer wrote:
> Sponsored-by: Sovereign Tech Fund
> Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
> ---
> libavcodec/ffv1enc.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>=20
> diff --git a/libavcodec/ffv1enc.c b/libavcodec/ffv1enc.c
> index b4080f29002..7c73ff12c2f 100644
> --- a/libavcodec/ffv1enc.c
> +++ b/libavcodec/ffv1enc.c
> @@ -1211,7 +1211,8 @@ size_t ff_ffv1_encode_buffer_size(AVCodecContext *a=
vctx)
> size_t maxsize =3D avctx->width*avctx->height * (1 + f->transparency=
);
> if (f->chroma_planes)
> maxsize +=3D AV_CEIL_RSHIFT(avctx->width, f->chroma_h_shift) * A=
V_CEIL_RSHIFT(f->height, f->chroma_v_shift) * 2;
> - maxsize +=3D f->slice_count * 800; //for slice header
> + maxsize +=3D f->slice_count * 800; //for slice header and
> + maxsize +=3D f->slice_count * 9000 * !!f->flt; //remap table
> if (f->version > 3) {
> maxsize *=3D f->bits_per_raw_sample + 1;
> } else {
will apply this without the typo and with a more correct estimation
[...]
--=20
Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB
Those who would give up essential Liberty, to purchase a little
temporary Safety, deserve neither Liberty nor Safety -- Benjamin Franklin
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