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

Fixes #7902
5 years ago · 568b7b2777
parent 1c3a3a4ec6
commit 568b7b2777
1 changed files with 1 additions and 1 deletions
--- a/libavcodec/gif.c
+++ b/libavcodec/gif.c
@ -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;