what's the chroma format with scalable modes being snr- or spatial-scalable and intra dc precbeingion being 8, 9, 10
CREATE TABLE "mpeg_2_profiles" (
  "abbr" text,
  "name" text,
  "picture_coding_types" text,
  "chroma_format" text,
  "aspect_ratios" text,
  "scalable_modes" text,
  "intra_dc_precision" text
);
SELECT "chroma_format" FROM "mpeg_2_profiles" WHERE "scalable_modes"='SNR- or spatial-scalable' AND "intra_dc_precision"='8, 9, 10';