Commit 5ae72f54 authored by Janne Grunau's avatar Janne Grunau

flashsv: check for keyframe before using differential coding

Fixes a segfault in te fuzzed sample resolutionchange.flv_s211713.

parent 706acb55
......@@ -377,6 +377,11 @@ static int flashsv_decode_frame(AVCodecContext *avctx, void *data,
if (has_diff) {
if (!s->keyframe) {
av_log(avctx, AV_LOG_ERROR,
"inter frame without keyframe\n");
s->diff_start = get_bits(&gb, 8);
s->diff_height = get_bits(&gb, 8);
av_log(avctx, AV_LOG_DEBUG,
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