Video: Seeking issues if MKV container is used

[moisespr123]

ffmpeg -i {input} -c:v h264_nvenc -preset slow -c:a libfdk_aac -b:a 256K -af "volume=4" -bf 0 -g 48 -ac 2 {output.mkv}

The above command line will work. Seeking via the touch screen actually works and is way faster than when the container is .mp4.

The real issue here is that using the D-Pad doesn't work correctly. Going back actually goes forward and it seems to jump to a farther point as the video progresses. It only seems to work at the very first minutes of a video file.

The seeking issue doesn't happen on .mp4 files produced with the same command line but of course, changing the output container to .mp4.

[Core-2-Extreme]

I used your command (used -c:a aac instead of -c:a libfdk_aac because my ffmpeg doesn't have it) to encode the video. Unfortunately, I couldn't reproduce it.

Are you using hardware decoder or software decoder? Could you provide your video(output.mkv not input) if possible?

[moisespr123]

It happens on both. Be sure to use a long video (Maybe an hour long) and seek starting at the middle. It may work fine at the beginning but then will skip.

I'm using nightly ffmpeg builds built using Media Autobuild Suite on Windows.

Which video codec did you use? Maybe it could be related to that? The issue doesn't happen on mp4 files.

[Core-2-Extreme]

I used h264_nvenc and video was 2 hours long.

https://user-images.githubusercontent.com/45873899/147877185-b1041dd7-0bdc-4026-b98e-e9ed97abd686.mp4

[moisespr123]

I tried using MKV again and can no longer reproduce this issue. Seems to be fixed on my side using the latest video player version and latest ffmpeg.