Its not exactly undocumented, the problem is that mp4 doesn't have a "title" metadata .. so people abuse "handler" for that (both players and encoders equally, mine included)
Its more of a missing feature in mp4 than an undocumented feature of ffmpeg.
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LAV Filters - open source ffmpeg based media splitter and decoders
Last edited by nevcairiel; 23rd March 2015 at 19:13.
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