[Android] Video Support

 

Android Media Support

https://developer.android.com/guide/topics/media/media-formats.html

ffmpeg

https://ffmpeg.org/ffmpeg.html

http://lnpcd.blogspot.tw/2012/07/ffmpeg-mp4.html

在Mac OSX上安裝ffmpeg && ffmpeg命令行將h264封裝為mp4

https://depthlove.github.io/2015/09/24/install-ffmpeg-to-MacOSX-and-use-ffmpeg-to-transform-h264-to-mp4/

FFmpeg 中文文件計畫

https://sites.google.com/site/ffmpegdoc/man-page

 

Test

ffmpeg -y -i i.mpg -c:v libx264 -vf scale=1280:720 -c:a aac -b:v 1.5M -b:a 192k -pass 1 o.mp4

ffmpeg -y -i 20170504022437.mp4 -framerate 30 -c:v libx264 -vf scale=1280:720 -c:a aac -strict -2 -b:v 1.5M -b:a 128k ../output/20170504022437.m4v

ffmpeg -y -r 30 -i 20170504022437.mp4 -c:v libx264 -vf scale=1280:720 -c:a libvo_aacenc -b:v 1.5M -b:a 128k ../output/20170504022437.m4v

FULL_FILE_NAME=$1
EXTENSION_NAME="${FULL_FILE_NAME##*.}"
FILE_NAME="${FULL_FILE_NAME%.*}"
NEW_FILE_FULL_NAME="$FILE_NAME.m4v"

ffmpeg -y -i $FULL_FILE_NAME \
-c:v libx264 \
-s 1280x720 \
-color_primaries 1 -color_trc 1 -colorspace 1 \
-r 30 \
-b:v 1500K \
-acodec copy \
-profile:v baseline \
-level 3.1 \
-movflags faststart \
-brand isom \
../output/$NEW_FILE_FULL_NAME


# mediainfo ../output/20170504022437.m4v

#ffmpeg -y -i 20170504022437.mp4 -crf:v 23 -c:v libx264 -s 1280x720 -vf colormatrix=bt601:bt709
#-pix_fmt yuv420p -r 30 -b:v 1M -acodec copy -profile:v baseline -level 3.0 -movflags faststart ../output/20170504022437.m4v
#
#-crf:v 23 \
#-vf scale=1280:720
#-color_primaries 1 -color_trc 1 -colorspace 1 \
#-vf colormatrix=bt601:bt709 -pix_fmt yuv420p \
#-c:a aac
#-c:a libvo_aacenc
#-c:a aac -strict -2
#-b:a 128k
# for ipod: main, for android: baseline
#-profile:v baseline \