[LAU] ltcvideosplit - tiny tool to synchronize videos based on the LTC code in the audio stream

Giso Grimm gg3137 at vegri.net
Tue Aug 23 19:09:01 UTC 2016

Based on libav and the great LTC library of Robin Gareus, I wrote a
small tool to simplify the synchronization of video files with audio:


If you connect an LTC signal (e.g., as generated by Ardour) with the
audio input of any low-budget video camera, the video material of the
camera can be aligned to the audio material played/recorded along with
the LTC time-line (e.g., in Ardour).

Essentially, this tool reports video- and LTC-frame number whenever they
drift apart or the LTC signal starts.

My use cases:

- research: record videos for motion analysis which are time-aligned to
sound events (with multiple cameras)

- music videos: record videos to existing audio material with multiple
cameras or multiple takes

Maybe this tiny tool is useful for someone.

Thanks to Robin for LTC tools and LTC support in Ardour!



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