lavfi/curves: add forgotten strong_contrast preset.
tools: add audio normalize script example.
ffmpeg_opt: avoid strcpy()

This fixes a warning on openbsd and is more robust

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
lavfi/perms: remove unecessary indirection after f7324c06.
lavfi/perms: add seed option.
lavfi/perms: add myself to the copyright header.
avcodec/x86/dsputil_qns_template: use av_assert

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
mpegtsenc: Only test the first frame for missing h264_mp4toannexb filter.

Many video players accept broken frames in a transport stream, so there
is no reason to abort remuxing when encountering one, just print a
warning instead.

Fixes ticket #1758.
Only test the first frame for missing aac_adtstoasc bistream filter.

Many players ignore broken aac frames, so don't abort mov or flv
muxing when encountering one, just print a warning instead.

Fixes ticket #2380.