[Mp4-tech] h264 inter prediction question

[Victor lyamtsev]

Would it be possible to reduce size of IDR slices with more "noisy" intra-
frame encoding?
Thank you again,
-V
On 4/26/08, Gary Sullivan <garysull windows.microsoft.com> wrote:
>
>  Victor,
>
> One way the break an IDR frame across multiple packets is to segment the
> frame into slices and use one packet per slice.
>
> IDR picture are most typically constructed of "I" slices, as opposed to
> "SI" slices.  Those are the only two slice types allowed in an IDR picture.
>
> When you refer to predicting slices within IDR frame, I'm not sure I
> really understand the question.  If you're referring to prediction from
> within the same slice, there is such prediction that occurs.  If you're
> referring to prediction from other pictures, that is sort of the opposite of
> the purpose of an IDR frame.  If you're referring to prediction from one
> slice to another within the same picture, that is sort of the opposite of
> the purpose of a slice.
>
> There is something called memory_management_control_operation equal to 5
> that you might want to study.  It has an effect that is somewhat of a hybrid
> of IDR-like picture buffer state reset and inter-picture prediction
> functionality.
>
> Best of luck in your efforts,
>
> Gary Sullivan
>
>  ------------------------------
> *From:* mp4-tech-bounces lists.mpegif.org [mailto:
> mp4-tech-bounces lists.mpegif.org] *On Behalf Of *Victor lyamtsev
> *Sent:* Thursday, April 24, 2024 7:54 AM
> *To:* mp4-tech lists.mpegif.org
> *Subject:* [Mp4-tech] h264 inter prediction question
>
>  Hello All,
>
> Can I use inter coding to predict slices within IDR frame? Or, can it only
> have "SI" slices within it?
> I am trying to run h264 stream over bandwidth constrained wireless
> network. Is there something I can use to break IDR frames over few network
> packets to make the stream less sensitive to packet loss?
> Thank you,
> - V.
>
>
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