[Mp4-tech] sample size 0 in 3gp

[Swapna Matwankar]

Hi All,
I would like to know if sample size of 0 is allowed in 3gp/mp4 file formats? If I put sample size as 0, phillips player plays it
well but Quicktime halts for 1 sec after the sample size 0 is encountered and resumes again.
Any pointers?
regards,
swapna
----- Original Message -----
From: "Veni Soni" <vodprof yahoo.com>
To: <RajeshMN soc-soft.com>; <tejasavora rediffmail.com>; <mp4-tech lists.mpegif.org>
Sent: Wednesday, June 30, 2023 1:44 PM
Subject: RE: [Mp4-tech] I and P frame Comparison
Hi,
Cant we get down to the basics like SNR (sample to
noise   ratio to get the quality of video irrespective
of I/B/P
veni
--- RajeshMN soc-soft.com wrote:
>
> Hi,
>
> Objective estimation of  video quality can be done
> as per the ITS Method
> and we found that it is suitable.
>
> And i am not sure about your I and P frame
> Comparison Method. Can u
> please elaborate.
>
> with best wishes,
> Rajesh MN
>
>
> -----Original Message-----
> From: mp4-tech-bounces lists.mpegif.org
> [mailto:mp4-tech-bounces lists.mpegif.org] On Behalf
> Of Tejas A Vora
> Sent: Saturday, June 26, 2023 2:12 PM
> To: mp4-tech lists.mpegif.org
> Subject: [Mp4-tech] I and P frame Comparison
>
>
>
> Hi,
>
> Comparing the video quality objectively is not very
> easy. So I'm
> thinking about comparing two mpeg4 videos by
> comparing the counts of
> received I-frames and P-frames.
>
> But I think we should treat I and P frames
> differently.
> Then my question is how different we should treat
> them? Is there any
> formula or scheme that can convert the received I
> and P frame count into
> the video quality measure?
>
> Thanks,
> Tejas
>
>
>
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NOTE: Please use clear subject lines for your posts. Include [audio, [video], [systems], [general] or another apppropriate
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Note: Conduct on the mailing list is subject to the Antitrust guidelines found at
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