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avcodec/gif: fix disposal method for first frame and transparent gifs 

Fixes #7902
This commit is contained in:
Paul B Mahol 2020-08-23 15:05:24 +02:00
parent 1c3a3a4ec6
commit 568b7b2777
1 changed files with 1 additions and 1 deletions
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2
libavcodec/gif.c
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@ -267,7 +267,7 @@ static int gif_image_write_image(AVCodecContext *avctx,
int bcid = -1, honor_transparency = (s->flags & GF_TRANSDIFF) && s->last_frame && !palette;
const uint8_t *ptr;
if (!s->image && avctx->frame_number && is_image_translucent(avctx, buf, linesize)) {
if (!s->image && is_image_translucent(avctx, buf, linesize)) {
gif_crop_translucent(avctx, buf, linesize, &width, &height, &x_start, &y_start);
honor_transparency = 0;
disposal = GCE_DISPOSAL_BACKGROUND;