[FFmpeg-user] ffmpeg and dv

[Dave Rice]

Hi all,

I love ffmpeg and I work with DV. Two years ago this commit, https://git.ffmpeg.org/gitweb/ffmpeg.git/commit/c7a852b638b88f129790af31fc47c870c329eaaa,  caused a regression so that the DV frame rate would be misinterpreted, for instance as 60000/1 fps rather than 30000/1001 fps. I reported this as a ticket at https://trac.ffmpeg.org/ticket/11339. For the meanwhile I’ve been staying at ffmpeg 5 to use a version without the commit, but although DV is a bit of an obsolete codec I’d love to see some consideration for the use of DV in ffmpeg’s future.

Would any of the following options work:

- Is there any workaround to force a frame rate of an input? For instance, could I use a non-ffmpeg tool to identify the frame rate and force ffmpeg to use a user-supplied one (such as 25 or 30000/1001) rather than the one is detects (such as 60000/1 fps).

- Anyone willing to fix the reported issue? I could offer some sponsorship of the work so that ffmpeg could once again work with DV?

Kind Regards,
Dave Rice