Quickpreview (native mediaplayer) not in sync with selected file

[adoeller]

When using custom fields, the preview is not in sync with the selected file.

Video
When comparing the file names, you see the difference.

Used custom fields.

I could reproduce the behavior every time.

Alex

[petermad]

I cannot reproduce this.

I have tested with TC 10 b10 32bit and 64bit under Windows 7 and Windows 10. I even set up the same Custum columns as you show here: https://www.dropbox.com/s/aarae7pxx9ee66r/2021-05-15%2021_17_28-total%20commander%2010.00%C3%9F10.png?dl=0

[Usher]

@adoeller
Which custom fields cause problems - from tc or from tcmediainfo?
Where is your mouse cursor located - on active panel, outside of TC window, in other place?

[adoeller]

Hi,

I did a new video capture.

whenever pressing up or down fast serveral times, it misses some files for the quick preview, but the file selection is correct.

I did a clean start of TC and left clicked one file initially and then only used the keyboard.

[petermad]

I can confirm, that if I switch quickly between video files with the keyboard, a video might start loading and not stop doing that when switching fast to the next file. It does not happen if I hold the up or down arrow for a little while and then release it, but it happens sometimes with repeatedly fast presses on the up or down key.

It does not matter whether I have a Custom Columns View or Full View.

[Usher]

So it looks like a known problem with fast reloading LAVfilters on file change, mostly fixed in TC10b7 and earlier betas:

22.04.21 Fixed: AutoPitch.dll: Reduced audio lag when playing tracks with more than 2 channels (32/64)
19.04.21 Fixed: Separate quick view window (Ctrl+Shift+Q): Closing it while playing video continued to play the sound (32/64)

See also viewtopic.php?f=35&t=74400&p=400467#p400467

[adoeller]

yes, may be related to the fix of the author. although the descriptions do not match my finding.

To be precise with my report, it is the wrong video that is played with perfect sound. no audio lag etc.

[Usher]

I mean - it's possibly related to the same piece of code, not to the same fix. There were more fixes in the new player…

Can you test some TC10 betas older than 7 and report whether they work better or worse?

[petermad]

I tried with TC 10 b6 - it seems equally easy to reproduce the problem as it is in b10.

[ghisler(Author)]

The new player loads videos asynchronously in a background thread. If I wouldn't do this, TC would become unusable. While a video is loading, another cannot be loaded, so when you quickly jump to the next file, it wouldn't be played. Currently I don't see an easy solution for that. I could freeze the interface until the video plays, but that would be horrible.

[Hacker]

Christian,
Could you perhaps upon playback start check if the same file is focused?

Roman

[adoeller]

i would suggest that TC starts quick preview - at least for video - a certain time after file selection was moved. e.g. wait 75 ms (customizable) and then start preview. when the selection was changed meatime, restart the 75 ms timeout. would come handy for other time consuming preview addons as well, e.g. the outside in technology lister.

[ghisler(Author)]

I found a better solution: When quick view is busy and the user changes to a different file, I will now start a thread which checks every 100 ms whether quick view is still busy. If not, it will post a refresh message to the window. This way we get the correct video in the end, although it may be delayed a bit.

Could you perhaps upon playback start check if the same file is focused?

I'm already doing this. When you click on the same file which is already playing, it will not restart.

[Usher]

2ghisler(Author)
Maybe you should add some explanation about delay to TC Help?

[ghisler(Author)]

The user will not really notice it, he will just see a switch between videos.