mfenc: Fall back to avctx->time_base if avctx->framerate isn't set

The framerate field is the one users are supposed to set, but not
all users might be setting it, so it might be good to fall back
time_base in that case.

Signed-off-by: Martin Storsjö <martin@martin.st>

diff --git a/libavcodec/mfenc.c b/libavcodec/mfenc.c
index edee0510b224a58de72a2c0e38f4c9e4a003b24e..83f26b3cc6a2e3d3c2305cc62cde248f7725db18 100644 (file)
--- a/libavcodec/mfenc.c
+++ b/libavcodec/mfenc.c
@@ -637,11 +637,19 @@ static int64_t mf_encv_output_score(AVCodecContext *avctx, IMFMediaType *type)
 static int mf_encv_output_adjust(AVCodecContext *avctx, IMFMediaType *type)
 {
     MFContext *c = avctx->priv_data;
+    AVRational framerate;
 
     ff_MFSetAttributeSize((IMFAttributes *)type, &MF_MT_FRAME_SIZE, avctx->width, avctx->height);
     IMFAttributes_SetUINT32(type, &MF_MT_INTERLACE_MODE, MFVideoInterlace_Progressive);
 
-    ff_MFSetAttributeRatio((IMFAttributes *)type, &MF_MT_FRAME_RATE, avctx->framerate.num, avctx->framerate.den);
+    if (avctx->framerate.num > 0 && avctx->framerate.den > 0) {
+        framerate = avctx->framerate;
+    } else {
+        framerate = av_inv_q(avctx->time_base);
+        framerate.den *= avctx->ticks_per_frame;
+    }
+
+    ff_MFSetAttributeRatio((IMFAttributes *)type, &MF_MT_FRAME_RATE, framerate.num, framerate.den);
 
     // (MS HEVC supports eAVEncH265VProfile_Main_420_8 only.)
     if (avctx->codec_id == AV_CODEC_ID_H264) {