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avfilter/vf_deflicker: fix invalid access

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Fixes #8253
This commit is contained in:
Paul B Mahol 2019-10-11 12:23:26 +02:00
parent 7ad69a73f3
commit b62f7e243c
1 changed files with 4 additions and 1 deletions
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5
libavfilter/vf_deflicker.c
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@ -420,7 +420,10 @@ static int request_frame(AVFilterLink *outlink)
ret = ff_request_frame(ctx->inputs[0]); ret = ff_request_frame(ctx->inputs[0]);
if (ret == AVERROR_EOF && s->available > 0) { if (ret == AVERROR_EOF && s->available > 0) {
AVFrame *buf = av_frame_clone(ff_bufqueue_peek(&s->q, s->size - 1)); AVFrame *buf = ff_bufqueue_peek(&s->q, s->available - 1);
if (!buf)
return AVERROR(ENOMEM);
buf = av_frame_clone(buf);
if (!buf) if (!buf)
return AVERROR(ENOMEM); return AVERROR(ENOMEM);