[Mp4-tech] Dropping NAL units on bit errors: Best approach?

[Luqman]

hello,
I like to simulate video over UMTS link and then drop all NAL units
containg bit error after the transport.
One possibility would be to read the bitstream file directly, look for
start_code_prefixes, i.e. 0x000000, to find NAL unit boundaries, and
copy everything except for errored NAL units in a new file.
Second approach would involve editing code in decoder directly. I am
working with reference decoder software JM10.2. 
Since the standard is very complex and I am just a novice on this topic, 
I was wondering if the first approach wouldn't be more appropriate for my 
purpose. With my limited experience with h264 working on encoded stream 
file seems to be more straightforward and universal solution.
I would appreciate any comments on this.
Regards,
-- 
Luqman
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