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Just to clear up some terminology: mp4 (the container format) may be covered by some patents, but nobody charges license fees for software or content. h.264, aka AVC aka MPEG-4 part10 is heavily patented, and software or hardware for encoding/decoding h.264 video streams needs a license from the MPEG Licensing Authority (MPEG LA). Content also needs a ...


4

IANAL, but as far as I understand it, if you're charging viewers for h.264 / MPEG-4 AVC content you do need to pay license fees. Even though x264 / ffmpeg are Free with a big F, they are just software libraries for encoding video streams into the H.264/MPEG-4 AVC format, which is covered by the MPEG patent. But the threshold for when fees are applicable is ...


0

h.264 supports various color info in the bitstream. From x264 --fullhelp: --range <string> Specify color range ["auto"] - auto, tv, pc --colorprim <string> Specify color primaries ["undef"] - undef, bt709, bt470m, bt470bg, smpte170m, ...


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i think MPEG Streamclip can do this. It's free on mac and pc.


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I was encountering audio sync issues when trying to do this with Avidemux, but I came upon a two-step process that keeps the audio in sync: Concatenate files using MKVToolNix (I used version 7.4.0 for Mac). This results in a Matroska video (.mkv) file. Remux the .mkv file to MP4 format using Avidemux (I used verison 2.6 for Mac). I chose the MP4v2muxer ...



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