x42/libtimecode

deal with A/V timecode and framerates

libTimecode

Timecode and Framerate manipulation functions.

WORK IN PROGRESS (Oct/31/2012)

Documentation

http://x42.github.com/libtimecode/

libtimecode's Issues

Small utility using libtimecode

Hi
I am writing a small utility that will be used to insert the current time of day in timecode format in ffmpeg. I have some comments about your library and I would like to know if you may be interested in them.

Calculation accuracy for drop frame timecode

Been trying to track down an issue that is popping up when doing conversions between a timecode and a frame number using a framerate of 29.97DF.

Take 08:33:25;02 for example:

Converted to a frame number at 29.97DF, libtimecode returns 923227. The correct value is 923228.
When the result of 923227 is sent back to libtimecode to be converted to a time, it returns 08:33:25;01.

Presumably using libtimecode to go to a frame number and back again should always yield the same result consistently, so something is getting switched in the math somewhere. Could this be due to rounding?

Shared library issue when on win32 mingw

LibLTC configure.ac has handling for the -no-undefined parameter requirement when building with mingw, however LibTimecode doesn't. This prevents .dll shared library creation on mingw.

To remedy... I copied the same handling logic from LibLTC's configure.ac and it worked without issue.

code version

In the process of running up a copy of this library. The version in git appears to be 0.1.0 but the version documented it 0.5.0 - there are macros and other things missing. Can you provide a pointer to the latest version of this?