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visible MPEG decoding error

Started by Alexis April 19, 2009
Hi all,

I'm a student and i have to do a research about diversity reception in
DVB-T.
Now i'm reading an article from this link:
http://www.dibcom.com/Images/Upload/pdf/Publications/Confluent.pdf.
I don't understand the subjective failure point definition (page 4) :
"maximum of one visible MPEG decoding error during 20 seconds".
Please, i would like to know what does this definition means; in
particoular, can i look for "visible MPEG decoding error"  analyzing
the audio/video stream (at the output of the STB) ? Or they can be
detected only with the use of an MPEG-TS analyzer ?

Best regards
On Apr 19, 2:03&#2013266080;pm, Alexis <alexisf...@libero.it> wrote:
> Hi all, > > I'm a student and i have to do a research about diversity reception in > DVB-T. > Now i'm reading an article from this link:http://www.dibcom.com/Images/Upload/pdf/Publications/Confluent.pdf. > I don't understand the subjective failure point definition (page 4) : > "maximum of one visible MPEG decoding error during 20 seconds". > Please, i would like to know what does this definition means; in > particoular, can i look for "visible MPEG decoding error" &#2013266080;analyzing > the audio/video stream (at the output of the STB) ? Or they can be > detected only with the use of an MPEG-TS analyzer ? > > Best regards
this usually means just what it sounds like, a visable error that shows up on the reconstructed video.. nothing more fancy than that Mark
> this usually means just what it sounds like, a visable error that > shows up on the reconstructed video.. &#2013266080;nothing more fancy than that > > Mark
thanks. Moreover, I have read this: "The SFP* corresponds fairly well to a Packet Error Ratio PER = 10-4 after the RS-decoder at the demodulator TS-output" So, i think, for criteria SFP it is also possible define a PER target (measured by a TS-MPEG analyzer) without looking at the video/audio output. *SFP = Single Failure Point