Hi - Not new to ffmpeg, but new to lib avfilter.
I am trying to build a tool to test lip sync - that is - is the audio and video timestamped correctly so that they are rendered correctly in time relative to each other. The simplest way to generate a test stream is to play an audio only file of someone clapping their hands and use windows-media player visualizer in one of the graphical modes so that the graph jumps for each clap. The harder part is verifying the result. I would like to build a filter that overlays each frame with a volume meter. That way I could simply verify that this volume meter jumps at the same time as the graphic in the video stream. Is this possible? Anyone have a better idea? JLM Jeremy Mordkoff Director, QA, IT & Release ZeeVee, Inc. One Monarch Drive | Littleton, MA 01460 Office: 978.467.1395 x233 | Fax: 978.467.1404 Mobile: 978-257-2183 [email protected] www.zeevee.com _______________________________________________ libav-user mailing list [email protected] https://lists.mplayerhq.hu/mailman/listinfo/libav-user
