frame shift not support mkv

[bilabila]

version: cc35c7e
os: archlinux

I use default obs settings to record two mkv videos, which are not synced. The -t works for time sync, but -+ doesn't, it can cause dual side shift and random time jumping.

I tried on two mp4 videos, and -+ works.

[Jon Frydensbjerg]

Hi tkcc,

Can you share the videos in question, please?

[Jon Frydensbjerg]

If you don't want to share them publicly here at GitHub, you can just share the videos with me privately via email at [e-mail], thanks.

[bilabila]

I remake a short recording.

2022-10-26 17-11-40.mkv.zip

To reproduce

video-compare 2022-10-26\ 17-11-40.mkv 2022-10-26\ 17-11-40.mkv

Then press - or + , and check the timestamp.

[Jon Frydensbjerg]

@tkkcc,

So I finally had an opportunity to test video-compare on your video.

I suspect the "dual side shifting and random time jumping"-phenomena you refer to is caused by video-compare re-syncing at the previous key frame when you press + or -. This is by design and how I had to implement the feature.

Here's a screenshot of the test I just performed:

The video you shared has two key frames at 0.0 s and 4.167 s, respectively. Basically I paused the video playback after the 4.167 s mark and pressed + several times. The right video was time shifted as expected.