Source Mismatch

[Aielman]

I am running Diko with the hc^n encoder, so have two instances of hc encoding simultaneously. The encodes are still in progress, but one of the hc runs is showing an error message: "source mismatch in pass 2 starting from frame 141" and the other is showing the same message except the source mismatch starts from frame 1. Has anybody come across this type of error message?

[vmesquita]

I think our friend Darksould71, HC^n author, can help troubleshooting this issue... I'll move this post to General Discussion so maybe he can help.

[Aielman]

Thanks, Vm. Both encodes ended with no problems that I can see in the m2v files, so hc^n seems to have performed correctly. Of course I still had the problem of diko crashing during the authoring step, but I have posted about that in an earlier thread. Looks like I will have to get DVD Lab to author my diko projects

[bbez]

I'm getting the same with HC 0.23, i've checked the muxed .mpg and there is no a/v synch issues, i think that the 1st pass must be reporting a different bitrate when the 2nd pass is running...

[Darksoul71]

@VM:

I think our friend Darksould71, HC^n author, can help troubleshooting this issue... I'll move this post to General Discussion so maybe he can help.

Oops, I´m just seven month late but I´ll try to help out

The source mismatch message is caused by AVISynth. Sometimes it can happen in a two pass encoding
that you get different results for a certain frame in the second pass. This is not limited to HCEnc. I´ve
experienced this also heavily when using AQE some years ago. It was that worse that I could use AQE in
OPV mode only. CCE has the same problem and reports an invalid VAF.

Honestly I have no clue what it happening inside AVISynth then but to my
experience this happens mostly when using strong and /or complex filtering.

Hank has introduced support for intermediate generation of a lossless file in the first pass.
This way the file is only filtered once. Takes a lot of diskspace but saves you from the
problems discribed above.

This is / will be supported in one of the next versions of HCEnc^n.

[bbez]

tnx for the info Darksoul71...