Hi I have the same issue as @gekht posted in the OSX forum.
I am using 2.8.1 on Windows 10 64 bit. The videos are 720p downloads from BBC iPlayer via get_iplayer app. (I am reducing the file size simply by selecting Bilinear in SWsResize Filter leaving all other settings alone. I find this reduces a 720P Mp4 from iPlayer to an Mp4 half the original size whilst retaining quality).
If I choose yes to the prompt it converts the file but the video is disjointed and the sound track out of sync. If I say no/cancel it converts the file and the video appears to be OK but the soundtrack is well out of sync.
I have tried downloading and installing the latest 2.8.2 nightly build and get the same error.
You asked @gekht for a 300Mb clip of the video. do you want the video before or after conversion or both. How do create a 300mb preview from the whole file and what does Head or dd mean please?
Quote from: Fozzie Bear on Today at 02:22:34 PMdo you want the video before or after conversion or both.
Please provide only the source video as output by that app (please choose the smallest sample enough to reproduce the issue, it would be lovely if the file size were well below 1 GiB, better below 300 MiB).
Quote from: Fozzie Bear on Today at 02:22:34 PMHow do create a 300mb preview from the whole file
This depends from the container format the app outputs. If it is anything other than MPEG-TS: you simply don't (and use the file as a whole) as only MPEG-TS allows to cut a part out of the file without rendering it invalid.
Quote from: Fozzie Bear on Today at 02:22:34 PMwhat does Head or dd mean please?
head (case-sensitive lowercase) and
dd are basic Unix command-line tools (on Linux, they belong to the package
coreutils) to operate on data streams / files. They can be used on a console (in a terminal) to write the specified number of units (lines, bytes, MiB etc.) from a file to a new file in a content-agnostic way.