A possible bug?

[tom942]

Hello,

I think I have found a bug related with HC encoder. At the beggining I thought that it was a HC bug, and when I saw it I told it to Hank. He answered me that he couldn´t reproduce that "bug", so I waited if by a "miracle" in the next version it get fixed, but nothing. That bug appeared under HC 17, 18 and 19.

Then I tested encoding directly these clips without using Rebuilder, and surprisingly they played without any problems of stuttering. All I did was to leave the default settings, except that I chose the best profile in the GUI (I used DGIndex for demux, then send m2v clip to hc encoder using d2v project file first and later a basic avs script, and I mux everything with latest free muxman version).

The issue is for example in Matrix movie, at the elevator's hall. There are 2 times that the sound stutter (I don´t know if it is the correct word, I mean that the sound get cut a moment, and continues as normal without lost of sync) and always happens in a scene with slow motion. The first when Trinity starts to walk on the wall, and a police man shoots to her, in that sequence, there are a lot of flashes coming from the machine gun. Other sequence is when Neo starts to shoot and then the camera enfoques him to show us how he shoots his machine guns. The sound here stutter again.

Other movie is King Kong, when Jack is typing "Skull" in a slow motion scene, it happens the same thing.

Also in Crash movie, at the beggining, in the credits there is slow motion and happens the same thing.

With other encoders such as CCE, QuENC or AQM don´t happen. Everything goes fine.

What can be?.

See you.

[jdobbs]

With other encoders such as CCE, QuENC or AQM don´t happen. Everything goes fine.Not sure what to say. The same parameters are passed to all the encoders... it sounds a like an encoder rate control problem, but I couldn't say without seeing the output. If you know how to extract just the offending cell, and it isn't too large, you could send it to dvd-rb@dvd-rb.com and I could take a look at it.

[tom942]

It only occurs on my dvd player (a JVC), but I don´t understand why it doesn´t stutter when I do all the steps myself (like I explained in the other post) and when I process it with rebuilder, it does.

At the beggining I thought that it could be something related with HC encoder and later with my player, but when I did the tests by hand and saw that the clips worked fine, I thought that it could be related with rebuilder.

What do you want I send you?, the clip with the slow motion scenes without process it?. If so, I could upload to a place like rapidshare, just to don´t full your mailbox. Other thing, my dvd's are PAL R2.

[jdobbs]

It's probably a quirk that happens only when the three are combined -- HC, DVD-RB, and that specific player.

Hank315 has given me a little more background on it. From what I see so far, I don't think it's a rate control problem from HC. I'm tracing DVD-RB's REBUILD actions and output to see if anything unusual is happening there.

[tom942]

Ok, thanks. I'´ll be very glad if it will be possible to fix it, if not, then I'll have to start to think to buy a new player :).

Thanks for your time :).

[tom942]

I've playing with the free version, the latest one using hc 0.18, and with this version everything works fine.

The only diference that I see is that in hc encoder in info says: "input using arguments and ini file", in the section of encoder settings everything is the same that in Pro, except scene change, in free says no and I've got encoder priority set to idle, but I suppose that this last one setting can´t have influence.

[jdobbs]

I think you're mistaken, the freeware version wouldn't build any differently than the Pro in this regard (unless there is a difference between the outputs of HC). It may make a difference if scene detection is disabled, I guess.

I've been looking at this, though, and got a little info from Hank315. And although it was an odd thing, I've found it. You'll see a fix in the next release. I'm still testing the new code.

[tom942]

Hi,

I've redone Matrix movie and at last it works fine, without stuttering.

Thank you :).

[tom942]

Just a quick note :).

Today I've done again King Kong but using as source the re-encoded dvd with stuttering problems, setting it at "No compression", so it demuxed and the muxed it and now the movie works fine without any problems :).

He, it saves me about 6 hours of re-encoding :).