diff --git a/libavcodec/ffv1.h b/libavcodec/ffv1.h index da841cf655..4f5a8ab2be 100644 --- a/libavcodec/ffv1.h +++ b/libavcodec/ffv1.h @@ -138,6 +138,7 @@ typedef struct FFV1Context { int intra; int key_frame_ok; int context_model; + int qtable; int bits_per_raw_sample; int packed_at_lsb; diff --git a/libavcodec/ffv1enc.c b/libavcodec/ffv1enc.c index 74d7e6c850..0dbfebc1a1 100644 --- a/libavcodec/ffv1enc.c +++ b/libavcodec/ffv1enc.c @@ -728,7 +728,7 @@ static av_cold int encode_init(AVCodecContext *avctx) for (i = 0; i < MAX_QUANT_TABLE_SIZE; i++) { s->quant_table_count = 2; - if (s->bits_per_raw_sample <= 8) { + if ((s->qtable == -1 && s->bits_per_raw_sample <= 8) || s->qtable == 1) { s->quant_tables[0][0][i]= quant11[i]; s->quant_tables[0][1][i]= 11*quant11[i]; s->quant_tables[0][2][i]= 11*11*quant11[i]; @@ -1289,6 +1289,8 @@ static const AVOption options[] = { { .i64 = 1 }, INT_MIN, INT_MAX, VE, .unit = "coder" }, { "context", "Context model", OFFSET(context_model), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE }, + { "qtable", "Quantization table", OFFSET(qtable), AV_OPT_TYPE_INT, + { .i64 = -1 }, -1, 2, VE }, { NULL } };