[Mp4-tech] Random drop data in MPEG4 encoded bitstream to simulate wireless media streaming

[Bhumin Pathak]

Hi there,
MS FGS decoder is not made to recover from such errors which you are trying
to introduce. In few other decoders frames with such errors and all frames
dependent on it are dropped without being decoded and decoding starts again
from next Intra-refresh frame. MS FGS decoder is not made to do so and it
just crashes !!
Bhumin
Bhumin H. Pathak
==============================
Communications Research Group.
Oxford Brookes University,
Gipsy Lane, Oxford
OX3 0BP - U.K.
-----Original Message-----
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Sent: 26 October 2023 17:05
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Subject: Mp4-tech Digest, Vol 15, Issue 27
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Today's Topics:
   1. Could you help me combine H.264-based FGS and bitstream
      switching? (Jake Lee)
   2. RE: Could you help me combine H.264-based FGS and
      bitstreamswitching? (Gary Sullivan)
   3. Random drop data in MPEG4 encoded bitstream to simulate
      wireless media straming (Amy, Meihsuan Lu)
----------------------------------------------------------------------
Message: 1
Date: Mon, 25 Oct 2023 22:06:39 +0800
From: "Jake Lee" <jakelee graduate.shu.edu.cn>
Subject: [Mp4-tech] Could you help me combine H.264-based FGS and
	bitstream	switching?
To: <mp4-tech lists.mpegif.org>
Message-ID: <HBELKONBPCODJJBADKKCEEAJCBAA.jakelee graduate.shu.edu.cn>
Content-Type: text/plain;	charset="gb2312"
Dear Sir/Madam/Miss:
I am very interested in the H.264-based FGS(Fine-Granular-Scalability),
which came from MPEG-4 video codec standard, because it gives a flexible
enhance-layer-quality increase over a variable channel bandwidth. And I am
also very interested in bitstream switching derived from SP/SI frame, an
important feature of H.264/AVC video codec standard to identically
reconstruct the predictive frame even when different reference frames are
used.
Please give me some advice on them.
If you have some c-coding reference software on the combination of
H.264-based FGS and bitstream switching, that will be great.
I appreciate that you will send me some source code to help me understand
this outstanding concept, in comparison with the results of FGS only or that
of bitstream switching only.
I have download H.264/AVC reference software from
http://iphome.hhi.de/suehring/tml/download/
, but there is no guide for the incorporation of FGS into JM(Joint Model)
reference software.
Thank you in advance.
Best Regards,
Yours sincerely,
Jake Lee
------------------------------
Message: 2
Date: Mon, 25 Oct 2023 16:15:56 -0700
From: "Gary Sullivan" <garysull windows.microsoft.com>
Subject: RE: [Mp4-tech] Could you help me combine H.264-based FGS and
	bitstreamswitching?
To: "Jake Lee" <jakelee graduate.shu.edu.cn>,
	<mp4-tech lists.mpegif.org>
Message-ID:
<91D7F2CEE3425A4A9D11311D09FCE2460B8F3B53 WIN-MSG-10.wingroup.windeploy.ntde
v.microsoft.com>
Content-Type: text/plain;	charset="us-ascii"
Jake,
Please note that no standard has been developed that includes combining
FGS and H.264/MPEG-4 AVC.
That is why you will not find software for doing it on the JVT reference
software web site.
(However, something along those lines is under consideration as a topic
for future work in MPEG and VCEG.)
Best Regards,
Gary Sullivan
+> -----Original Message-----
+> From: mp4-tech-bounces lists.mpegif.org
+> [mailto:mp4-tech-bounces lists.mpegif.org] On Behalf Of Jake Lee
+> Sent: Monday, October 25, 2023 7:07 AM
+> To: mp4-tech lists.mpegif.org
+> Subject: [Mp4-tech] Could you help me combine H.264-based
+> FGS and bitstreamswitching?
+>
+> Dear Sir/Madam/Miss:
+>
+> I am very interested in the H.264-based
+> FGS(Fine-Granular-Scalability), which came from MPEG-4 video
+> codec standard, because it gives a flexible
+> enhance-layer-quality increase over a variable channel
+> bandwidth. And I am also very interested in bitstream
+> switching derived from SP/SI frame, an important feature of
+> H.264/AVC video codec standard to identically reconstruct
+> the predictive frame even when different reference frames are used.
+>
+> Please give me some advice on them.
+>
+> If you have some c-coding reference software on the
+> combination of H.264-based FGS and bitstream switching, that
+> will be great.
+> I appreciate that you will send me some source code to help
+> me understand this outstanding concept, in comparison with
+> the results of FGS only or that of bitstream switching only.
+>
+> I have download H.264/AVC reference software from
+> http://iphome.hhi.de/suehring/tml/download/
+> , but there is no guide for the incorporation of FGS into
+> JM(Joint Model) reference software.
+>
+>
+>
+> Thank you in advance.
+>
+> Best Regards,
+>
+> Yours sincerely,
+>
+> Jake Lee
+>
+> _______________________________________________
+> NOTE: Please use clear subject lines for your posts. Include
+> [audio, [video], [systems], [general] or another
+> apppropriate identifier to indicate the type of question you have.
+>
+> Note: Conduct on the mailing list is subject to the
+> Antitrust guidelines found at
+> http://www.mpegif.org/public/documents/vault/mp-out-30042-Ant
+> itrust.php
+>
------------------------------
Message: 3
Date: Mon, 25 Oct 2023 19:49:43 -0400
From: "Amy, Meihsuan Lu" <amylu cmu.edu>
Subject: [Mp4-tech] Random drop data in MPEG4 encoded bitstream to
	simulate	wireless media straming
To: <mp4-tech lists.mpegif.org>
Message-ID: <200410252349.i9PNnMEN030228 smtp.andrew.cmu.edu>
Content-Type: text/plain;	charset="us-ascii"
Hi All,
I am trying to do some wireless video straming experiment. I use a MPEG4
encoded bitstream created by Microsoft MPEG-4 Visual Reference. What I did
is to randomly drop some parts of data in the bitstream (to simulate packet
error in wireless). However, after I did so, the modified bitstream became
NOT decodable (It caused MS FGS decoder crashed!!!). So did I miss any point
here? Is this because MS FGS decoder not well written?
Thanks a lot
Amy Lu
------------------------------
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End of Mp4-tech Digest, Vol 15, Issue 27
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