[Mp4-tech] [MP4-teach][Video]H.264 in error prone environments

[Marco D'Orlando]

Dear Sir/Madam/Miss:
I am very interested in the H.264 video coding/decoding in packet loss 
environment.
I have download JM93 fom http://iphome.hhi.de/suehring/tml/download/
and I encode some sequences. I simulate the transmission of the stream 
recording packet loss trace using a separate network simulator. Then I 
remove RTP packets from the RTPoutput file. When I try to decode the 
stream I miss some errors and the decoding process doesn't end.
I obtain some error messages from the decoder:
Typically I obtain: "ERROR: failed to find NumCoeff/TrailingOnes" from the 
decoder then the decoding process stop!.
Sometimes I obtain the message: "An unintentional loss of pictures occurs! Exit"
I don't know why the decoder stop the decoding process. The stream received 
has a little bit of packets losses.
I would like to complete the decoding process for evaluating the final user 
quality, but I don't know how to force the decoder to continue the decoding 
process.
I hypotyse that some packets could be essential for the decoder, but I 
don't know how to identify and mark them.
Please give me some advices.
Best Regards,
Marco D'Orlando
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