Parasites playing Lumix TZ7's .MLT files (h264)

[marce34]

I have this camera and vlc seems to be playing it ok (in my core2duo 2.6 with Nvidia 8600), but it drops wrong pixel zones mainly when panning.

Is there a solution other than converting the file?

[Lotesdelere]

Can you post a sample file showing this problem ?

[marce34]

Oh, I was wrong with the extension of the files this camera generates. It's MTS, not MLT (I bought it just a few days ago)

Can you post a sample file showing this problem ?

Here it is: http://mesxes.es/img/seville.mts Sorry, the captured image below is quite blurry, but you can see the effect on my brother's hair.



Being a complete ignorant in this topic, I think the problem has something to do with the codec. I can see these pixelated zones wherever there's a "big change", or not so big.

The problem persists on two different computers with intel and nvidia cards and using Vista, Ubuntu and Mac (Hack) OS X, with VLC versions 0.9.9a and 1.0 final.

[Lotesdelere]

Here it is: http://mesxes.es/img/seville.mts

Yep, I can confirm the artifacts, even with the loop filter disabled.

The file is playing fine in MPlayer though.

Created ticket #2967.

[marce34]

Yep, I can confirm the artifacts, even with the loop filter disabled.

The file is playing fine in MPlayer though.

Great, at least I can confirm it's not a hardware issue.

Didn't you notice the video plays at higher than normal speed in MPlayer? (and not the audio). Totem Player reports the files are at 100 fps.

[Lotesdelere]

Didn't you notice the video plays at higher than normal speed in MPlayer? (and not the audio). Totem Player reports the files are at 100 fps.

In fact the recording mode used in this file is a bit strange.
It's flagged as progressive (and seems to really be) at 50 FPS and some kind of 'pulldown' seems to be applied. It also seems that all frames are repeated and I wasn't able to remove this 'pulldown' during demuxing, but I've not spent much time on that.

Remuxing the file gives strange results.
When remuxing to MKV I need to specify 25 FPS as the frame rate for a proper playback. In this case the file is playing fine in any player without artifacts even in VLC. However if I specify a 50 FPS frame rate like the original file then the video is playing too fast at twice the speed.

Remuxing to MP4 leads to a complete disaster, whatever frame rate is used 25 or 50, the file is just unplayable in any player, image is stuck and/or showing a lot of artifacts.

So I'm not sure about what is going on there. I think we need a H264 specialist for a deeper analysis of the original file.

[permafrost_dk]

I have a Lumix TZ7 myself and I have the exact same problem as marce34 with MTS files. When playing these files in VLC weird artefacts appears in all movies just like in the one marce34 posted an example of.

Furthermore about 1/6 of the movies recorded is not playable in VLC. The file "plays" for about 1 sec. without any picture or sound.

I tried to use "Media Player Classic - HomeCinema" and it plays all my MTS-files and no artefacts is appearing.
Playing the files on the camera itself shows no problems either for me and all files can be played here as well.

I hope this will be fixed VLC soon

[marce34]

Tested the new 1.0.1 version with no luck. Maybe the next version?

[permafrost_dk]

Tested the new 1.0.2 version with no luck. Maybe the next version?

[marce34]

Neither 1.03

I'm losing my hope.