dnxhddata: Double frame_size for cid 1260

Despite '417792' being reported in the binary decoder, the buffer at
encoding time needs to be bigger to avoid running out of space due to
interlace handling.
Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>

libavcodec/dnxhddata.c

@@ -1215,7 +1215,7 @@ const CIDEntry ff_dnxhd_cid_table[] = {
       dnxhd_1237_ac_run_flag, dnxhd_1237_ac_index_flag,
       dnxhd_1237_run_codes, dnxhd_1237_run_bits, dnxhd_1237_run,
       { 63, 84, 100, 110 } },
-    { 1260, 1440, 1080, 1, 417792, 417792, 4, 8,
+    { 1260, 1440, 1080, 1, 835584, 417792, 4, 8,
       dnxhd_1260_luma_weight, dnxhd_1260_chroma_weight,
       dnxhd_1237_dc_codes, dnxhd_1237_dc_bits,
       dnxhd_1237_ac_codes, dnxhd_1237_ac_bits, dnxhd_1237_ac_level,