devnano · November 12, 2019 11:11
diff --git a/ios_device_video_to_app_preview.sh b/ios_device_video_to_app_preview.sh
 # AppStore requires an apppreview that doesn't exceed X size, no more than Y fps and MUST have two-channel audio.
 # This script assumes a device recorded video with QuickTime as input. It's too slow, give size exceeded error and the audio is background noise
 # As output we have: Speed up video – 2x – at 30fps, remove original audio and add silence two-channel audio 
 # Sources:
 # https://stackoverflow.com/a/12375018
 # https://trac.ffmpeg.org/wiki/How%20to%20speed%20up%20/%20slow%20down%20a%20video
 # https://trac.ffmpeg.org/wiki/ChangingFrameRate
 # https://ffmpeg.org/ffmpeg-filters.html#Examples-67
 # https://superuser.com/a/1354557
 #!/bin/bash
 ffmpeg -f lavfi -i anullsrc -i iphone\ 5s.mov -filter:v "fps=30,setpts=0.5*PTS" -shortest  -c:a aac  -map 0:a -map 1:v output.mov
	# AppStore requires an apppreview that doesn't exceed X size, no more than Y fps and MUST have two-channel audio.
	# This script assumes a device recorded video with QuickTime as input. It's too slow, give size exceeded error and the audio is background noise
	# As output we have: Speed up video – 2x – at 30fps, remove original audio and add silence two-channel audio
	# Sources:
	# https://stackoverflow.com/a/12375018
	# https://trac.ffmpeg.org/wiki/How%20to%20speed%20up%20/%20slow%20down%20a%20video
	# https://trac.ffmpeg.org/wiki/ChangingFrameRate
	# https://ffmpeg.org/ffmpeg-filters.html#Examples-67
	# https://superuser.com/a/1354557
	#!/bin/bash
	ffmpeg -f lavfi -i anullsrc -i iphone\ 5s.mov -filter:v "fps=30,setpts=0.5*PTS" -shortest -c:a aac -map 0:a -map 1:v output.mov