The FFmpeg snap

Review FFmpeg build options

Most --enable-* flags used in the snap of FFmpeg are consistent with what's used in the .deb of FFmpeg in Ubuntu. Determine which of the following are generally useful and enable them:

• --enable-ladspa
• --enable-libaom (core20)
• --enable-libjack
• --enable-libmysofa
• --enable-libvidstab (core20)
• --enable-lv2
• --enable-libiec61883 (FTBFS on core18)
• --enable-frei0r

Raspberry Pi

Add support for the Raspberry Pi in the armhf and arm64 builds.

[libraspberrypi-dev] will need including in the build process but doesn't need to to be primed. This package adds the headers that make it possible to enable --enable-mmal (Broadcom Multi-Media Abstraction Layer) and --enable-omx-rpi.

# Raspberry Pi specific optimizations
ifeq ($(DEB_HOST_ARCH),armhf)
  CONFIG += --arch=arm
  #CONFIG += --cpu=arm1176jzf-s
  CONFIG += --disable-armv5te
  CONFIG += --disable-neon
  #CONFIG += --enable-armv6t2
  #CONFIG += --enable-armv6
  #CONFIG += --enable-vfp
  CONFIG += --enable-hardcoded-tables
  CONFIG += --enable-mmal
  CONFIG += --enable-omx-rpi
  CONFIG += --disable-decoder=mpeg_xvmc
  CONFIG += --disable-vaapi
  CONFIG += --disable-vdpau
  CONFIG += --disable-runtime-cpudetect
  CONFIG += --disable-debug
  CONFIG += --extra-cflags="-mno-apcs-stack-check -mstructure-size-boundary=32 -mno-sched-prolog"
else
  CONFIG += --enable-omx
endif

Reference

• debian/rules · debian/master · Debian Multimedia Team / ffmpeg · GitLab