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Search took 0.00 seconds. Search: Posts Made By: Shevach
Forum: VP9 and AV1 6th July 2017, 11:49
Replies: 39
Views: 128,754
Posted By Shevach
The Segmentation is an optional mode in VP9 only....

The Segmentation is an optional mode in VP9 only. i agree that for typical real video 'fine grained block adaptivity' is better than the Segmentation. However, there are scenarios when Segmentation...
Forum: VP9 and AV1 3rd July 2017, 15:02
Replies: 39
Views: 128,754
Posted By Shevach
@MasterNobody Benefits of Segmentation depends...

@MasterNobody
Benefits of Segmentation depends on content (animation with large fixed background) and bitrate (low bitrate).
As per x264 AQ, the quantizer fluctuates within a frame according to...
Forum: VP9 and AV1 2nd July 2017, 16:16
Replies: 39
Views: 128,754
Posted By Shevach
Let me share a white paper "Choosing of the Right...

Let me share a white paper "Choosing of the Right Codec: Comparing HEVC & VP9"
https://drive.google.com/file/d/0B7a5Sr0jgK2ISTg5NkpRN2pVZjQ/view

in this paper a qualitative analysis of key...
Forum: VP9 and AV1 20th April 2017, 16:50
Replies: 39
Views: 128,754
Posted By Shevach
i see three flaws VP9 which deteriorate error...

i see three flaws VP9 which deteriorate error resilience: lack of start-codes, lack of slices and non-adaptivity of probabilities within a frame.

When arithmetic coding is used error-detection...
Forum: VP9 and AV1 19th April 2017, 10:19
Replies: 39
Views: 128,754
Posted By Shevach
@pieter3d you wrote: "Another glaring flaw...

@pieter3d
you wrote:
"Another glaring flaw is the fact that MV decode requires fully reconstructed neighboring and co-located MV values, which means the entire MV prediction process is required...
Forum: VP9 and AV1 15th April 2017, 09:33
Replies: 39
Views: 128,754
Posted By Shevach
i wonder if there are plans in Mpeg committee to...

i wonder if there are plans in Mpeg committee to add support of VP9 for Mpeg File System (mp4 format). How specify stsd-box if vp9 video stream present in mdat-box?
Generally speaking encapsulation...
Forum: VP9 and AV1 14th April 2017, 10:39
Replies: 39
Views: 128,754
Posted By Shevach
Lack of start codes in VP9 makes error...

Lack of start codes in VP9 makes error resynchronization challenged (barely possible). Consequently, the error resilience of HEVC is in virtue better than that in VP9.
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