1. ffmpeg
  2. Commit 11a631d4a76859e09cd413856e32df6363d25eea
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avfilter/vf_minterpolate: do not right shift negative numbers

It was source of crashes. Use division instead.

Original patch by author. Log message by comitter.

Davinder Singh authored on 2016/08/30 00:04:54
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libavfilter/vf_minterpolate.c
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@@ -936,8 +936,8 @@ static void set_frame_data(MIContext *mi_ctx, int alpha, AVFrame *avf_out)
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                 for (i = 0; i < pixel->nb; i++) {
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                     Frame *frame = &mi_ctx->frames[pixel->refs[i]];
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                     if (chroma) {
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-                        x_mv = (x >> mi_ctx->chroma_h_shift) + (pixel->mvs[i][0] >> mi_ctx->chroma_h_shift);
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-                        y_mv = (y >> mi_ctx->chroma_v_shift) + (pixel->mvs[i][1] >> mi_ctx->chroma_v_shift);
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+                        x_mv = (x >> mi_ctx->chroma_h_shift) + (pixel->mvs[i][0] / (1 << mi_ctx->chroma_h_shift));
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+                        y_mv = (y >> mi_ctx->chroma_v_shift) + (pixel->mvs[i][1] / (1 << mi_ctx->chroma_v_shift));
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                     } else {
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                         x_mv = x + pixel->mvs[i][0];
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                         y_mv = y + pixel->mvs[i][1];