[FFmpeg-cvslog] avcodec/ffv1enc: Slice combination is unsupported

[Michael Niedermayer]

ffmpeg | branch: release/4.3 | Michael Niedermayer <michael at niedermayer.cc> | Fri Oct  6 22:23:33 2023 +0200| [c02c96b93df3090029b8b91bf6369a8486167cd9] | committer: Michael Niedermayer

avcodec/ffv1enc: Slice combination is unsupported

We always write minimal slices, the size calculation is wrong in some
corner cases but as its always 1x1 (minus1) we can for now just hard-code it

This helps with ticket 5548

Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
(cherry picked from commit 7d514655bfa47c6e5cc1b81fbba8e750e368036e)
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=c02c96b93df3090029b8b91bf6369a8486167cd9
---

 libavcodec/ffv1enc.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/libavcodec/ffv1enc.c b/libavcodec/ffv1enc.c
index 82f21de8b3..92e2322cc8 100644
--- a/libavcodec/ffv1enc.c
+++ b/libavcodec/ffv1enc.c
@@ -940,8 +940,8 @@ static void encode_slice_header(FFV1Context *f, FFV1Context *fs)
 
     put_symbol(c, state, (fs->slice_x     +1)*f->num_h_slices / f->width   , 0);
     put_symbol(c, state, (fs->slice_y     +1)*f->num_v_slices / f->height  , 0);
-    put_symbol(c, state, (fs->slice_width +1)*f->num_h_slices / f->width -1, 0);
-    put_symbol(c, state, (fs->slice_height+1)*f->num_v_slices / f->height-1, 0);
+    put_symbol(c, state, 0, 0);
+    put_symbol(c, state, 0, 0);
     for (j=0; j<f->plane_count; j++) {
         put_symbol(c, state, f->plane[j].quant_table_index, 0);
         av_assert0(f->plane[j].quant_table_index == f->context_model);