FFV1 decoder supports up to 1024 slices but FFV1 encoder permits only
961 (31x31) slices.
This patch permits to create 1024 (32x32) slices.
From 494115e12981a9c54bf04b63a13ef50364349de2 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C3=A9r=C3=B4me=20Martinez?= <jer...@mediaarea.net>
Date: Wed, 7 Mar 2018 10:49:24 +0100
Subject: [PATCH 5/7] avcodec/ffv1enc: support of 1024 slices
Decoder already accepts 1024 slices but encoder was limited to 961 slices
---
libavcodec/ffv1enc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libavcodec/ffv1enc.c b/libavcodec/ffv1enc.c
index 16987117d8..262821abab 100644
--- a/libavcodec/ffv1enc.c
+++ b/libavcodec/ffv1enc.c
@@ -872,7 +872,7 @@ FF_ENABLE_DEPRECATION_WARNINGS
s->num_v_slices = FFMIN(s->num_v_slices, max_v_slices);
- for (; s->num_v_slices < 32; s->num_v_slices++) {
+ for (; s->num_v_slices <= 32; s->num_v_slices++) {
for (s->num_h_slices = s->num_v_slices; s->num_h_slices <
2*s->num_v_slices; s->num_h_slices++) {
int maxw = (avctx->width + s->num_h_slices - 1) /
s->num_h_slices;
int maxh = (avctx->height + s->num_v_slices - 1) /
s->num_v_slices;
--
2.13.3.windows.1
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