VirtualDub2

[SeeMoreDigital]

Originally Posted by LigH

VirtualDub2 r44282 (release): OK

I can confirm this release does indeed fix Leo 69's issue

Edit: Having a 'variable frame rate' doesn't help. But re-muxing the hevc elementary stream to have a constant frame didn't help either.

[LigH]

Originally Posted by v0lt

I found a similar issue: https://github.com/mpv-player/mpv/issues/3440

There I read that there are reasons (e.g. VFR, but also High Bit Depths) which may cause wrong seeking. Issue got closed only because "wrong muxing" was blamed. But if an older version works without issues, there seems to be a more compatible fallback technique to determine a valid reference frame?

[Leo 69]

I just wanted to add that variable frame rate doesn't really play a role, I have plenty of videos with CFR which VirtualDub has same issues with (but not with all videos).

[v0lt]

I found this ticket - https://trac.ffmpeg.org/ticket/9805.
There is a problem with ffplay, but ffplay works fine for me.
There are links in the ticket, but they do not explain how to solve the problem in applications using ffmpeg.

[qyot27]

Originally Posted by LigH

There I read that there are reasons (e.g. VFR, but also High Bit Depths) which may cause wrong seeking. Issue got closed only because "wrong muxing" was blamed. But if an older version works without issues, there seems to be a more compatible fallback technique to determine a valid reference frame?

If it's the sort of 'wrong muxing' I'm thinking of (or at least in the same ballpark), then remuxing yourself using MKVToolNix and then checking if the new file is broken would confirm that.

[LigH]

Original sample.mkv was (according to metadata) multiplexed with mkvmerge v90.0.

Remultiplexed with mkvmerge v91.0: same result (works in r44282, fails with any newer avlib).

Remultiplexed with Box4 v3 to MP4: same result (works in r44282, fails with any newer avlib).

[v0lt]

Test build VirtualDub2 v2.3.0.838.
I tried to fix the problem with some HEVC streams.
Hopefully nothing else was broken.

[jay123210599]

Say I want to zoom in on this specific part of the video (meaning only show that specific selection). How do I do that?

https://imgur.com/Sucpw45

[poisondeathray]

Originally Posted by jay123210599

Say I want to zoom in on this specific part of the video (meaning only show that specific selection). How do I do that?

https://imgur.com/Sucpw45

If you mean the frame selection in the screenshot , edit=>crop to selection

If you mean spatially, to some elements of the picture such as eyes etc.., apply the crop filter and resize filter