If hw_base_encode_send_frame() is called with frame == NULL before any input frames are submitted, ctx->pic_end is NULL and dereferencing it causes a crash. This can occur in hardware encoding pipelines that flush before receiving any input frames.
Fix by checking ctx->pic_end before accessing its pts field. Link: https://github.com/tvheadend/tvheadend/issues/1833 Signed-off-by: James Hutchinson <jahutchinso...@googlemail.com> --- libavcodec/hw_base_encode.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/hw_base_encode.c b/libavcodec/hw_base_encode.c index 33a30c8d10..7aa8aeedb1 100644 --- a/libavcodec/hw_base_encode.c +++ b/libavcodec/hw_base_encode.c @@ -504,7 +504,7 @@ static int hw_base_encode_send_frame(AVCodecContext *avctx, FFHWBaseEncodeContex // Fix timestamps if we hit end-of-stream before the initial decode // delay has elapsed. - if (ctx->input_order <= ctx->decode_delay) + if (ctx->input_order <= ctx->decode_delay && ctx->pic_end) ctx->dts_pts_diff = ctx->pic_end->pts - ctx->first_pts; } -- 2.50.0 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
