On 10/8/2023 9:45 AM, Steven Liu wrote:
James Almer <jamr...@gmail.com>于2023年10月8日 周日20:08写道：
On 10/8/2023 8:57 AM, Steven Liu wrote:
Makes the output of the libaom av1 decoder consistent with external
decoders like
libdav1d.
reference commit: 1652f2492f88434010053289d946dab6a57e4d58
But it is known at this point. picture->sample_aspect_ratio is set
directly above.
What needs to be done is initializing the decoder in aom_init() using
the extradata, so lavf will not attempt to decode frames in order to get
stream info, which is what i assume is happening here and why you want
SAR to be 0/1.
i want fate pass
It will if you parse extradata during init().
This change is not ok given it's removing SAR altogether, meaning if a
sample has render dimensions that are not the same as the coded
dimensions, this information will not be propagated and players will
display the frames with the wrong aspect ratio.
Signed-off-by: Steven Liu <l...@chinaffmpeg.org>
---
libavcodec/libaomdec.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/libavcodec/libaomdec.c b/libavcodec/libaomdec.c
index 695d901051..ff4137bfc6 100644
--- a/libavcodec/libaomdec.c
+++ b/libavcodec/libaomdec.c
@@ -204,7 +204,6 @@ static int aom_decode(AVCodecContext *avctx, AVFrame
*picture,
picture->height * img->r_w,
picture->width * img->r_h,
INT_MAX);
- ff_set_sar(avctx, picture->sample_aspect_ratio);
if ((img->fmt & AOM_IMG_FMT_HIGHBITDEPTH) && img->bit_depth ==
8)
ff_aom_image_copy_16_to_8(picture, img);
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