[vlc] AVC playback bug - more notes

[Jean-Paul Saman]

Francois Grobbelaar wrote:
> Sorry, I just want to also check, does someone actually read e-mails 
> going to this address? I'd like sort of indication that my e-mail was 
> received and didn't just disappear into the void.

Can you send logging output of vlc? (Start vlc from console with -vvvv 
for instance).

> 
> In addition to that, here are a few notes I forgot to mention in my 
> original e-mail:
> 1) Most h264 videos play fine, it is just the odd encode every here and 
> there that displays this issue
> 2) It is not a CPU issue - my CPU's barely even being utilized when this 
> video is played and I don't have problems decoding h264 videos even at 
> 1920x1080 resolution (in VLC, which is faster than MPC which does tend 
> to lag a bit once I hit that res).
> 3) I'm running on Windows Vista with my video output set to Direct3D 
> (though I doubt that is the reason as then I would have expected more 
> videos to have this problem)
> 
> I suspect it is just videos output by a specific encoder, but it is 
> strange because I thought VLC uses ffmpeg's h264 decoder, which is 
> exactly what ffdshow uses, and ffdshow has no problem decoding the files 
> that show this behavior under media player classic. It does make me 
> wonder if it could be something else, I've tried remuxing the file into 
> another mkv container, but it didn't make a difference, I guess it could 
> be anything, even audio codec perhaps. Well, please look into it and 
> just write back to confirm that you did get the e-mail.
> 
> 
> Thanks,
> Francois.
> p.s. Awesome player :) - thanks for all the time you guys put into it.
> 
> -------- Original Message --------
> Subject: 	AVC playback bug
> Date: 	Sun, 21 Dec 2008 00:54:29 +1300
> From: 	Francois Grobbelaar <bles at ihug.co.nz>
> To: 	vlc at videolan.org
> 
> 
> 
> Hello,
> 
> Firstly, VLC media player is awesome, I have been really impressed with 
> it so far and I really hope it has a long future ahead of it. I'm 
> strongly considering switching completely over to it soon (I currently 
> use it for playing DVDs and the odd video that doesn't play in media 
> player classic - I intend to get a Mac soon and of course at that point 
> I will be switching to VLC).
> 
> There is one thing that kind of bothers me though. I am a fan of anime 
> and I found that some of the h264 encoded videos do not play back 
> correctly on VLC (or it could be the mkv container, not sure) - this is 
> something I noticed in the 0.96 release and thought would be fixed on 
> the newest (0.98a) but it doesn't look like it has been fixed, I also 
> don't know how long the problem has been there. Media Player Classic 
> running the CCCP codec pack doesn't have the same problem and neither 
> does ZoomPlayer. I can't think of a better way for you to see the 
> problem other than providing you with a link to an example of what I'm 
> talking about (this is a torrent link for an unlicensed anime episode):
> http://tracker.anirena.com/download.php?id=12112
> 
> You'll notice the issue fairly soon, the video just freezes every few 
> seconds and recovers every now and then. It is probably some codec 
> feature that is not supported in VLC but is used for some of these 
> releases. This is really the only thing currently stopping me from 
> making VLC my default media player for everything.
> 
> 
> Thanks, you guys have a great project on your hands,
> Francois.
> 
> 
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