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V I D E O P R O C E S S I N G O N
A N D R O I D
N A M R ATA B A N D E K A R
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W H O A M I
• OANDA
• raywenderlich.com
• Ginger!
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V I D E O P R O C E S S I N G
I N T R O D U C T I O N T O
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M O B I L E A P P S
P O P U L A R U S E I N
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C O M M O N F E AT U R E S
• Special video effects
• Merging videos
• Cropping and trimming
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M Y S E C O N D J O B !
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W E AT H E R G I F
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F E AT U R E L I S T ?
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I O S W E AT H E R G I F
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V I D E O E D I T I N G
O N D E V I C E
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A N D R O I D S U P P O R T
• MediaCodec
• MediaExtractor
• MediaMuxer
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W H AT N E X T ?
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F F M P E G
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W H Y F F M P E G ?
• Swiss Army Knife for video
• Filters
• Subtitles
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F F M P E G O N A N D R O I D
• Executable binary
• Shared object library
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F F M P E G E X E C U TA B L E
B U I L D I N G T H E
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D E P E N D E N C I E S
• autoconf
• automake
• libtool
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G E T T I N G S TA R T E D
Step 1: Download and unpack NDK
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G E T T I N G S TA R T E D
Step 2: Download FFmpeg source code
https://github.com/FFmpeg/FFmpeg
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G E T T I N G S TA R T E D
Step 3: Download sources for other
libraries like yasm and libvpx
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G E T T I N G S TA R T E D
Step 4: Put FFmpeg and other
libraries under ndk/sources
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C O N F I G U R I N G …
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C O N F I G U R I N G
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C O N F I G U R I N G
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C O N F I G U R I N G
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C O N F I G U R I N G
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C O M P I L I N G
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F F M P E G E X E C U TA B L E
I N Y O U R A N D R O I D P R O J E C T
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C H A N G E P E R M I S S I O N S
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P R O C E S S B U I L D E R
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F I LT E R C H A I N I N G
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P E R F O R M A N C E
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S H A R E D O B J E C T L I B R A RY
B U I L D I N G F F M P E G A S A
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S E T U P F O R F F M P E G . S O
Step 1: JNI project same folder as NDK
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S E T U P F O R F F M P E G . S O
Step 2: Android.mk file
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S E T U P F O R F F M P E G . S O
Step 3: Application.mk file
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S E T U P F O R F F M P E G . S O
Step 4: Place native code in app/jni
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N D K M A G I C
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L O A D S H A R E D L I B R A RY
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W E AT H E R G I F D E M O
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L I C E N S I N G
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L I C E N S E C O M P L I A N C E
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L I C E N S E C O M P L I A N C E
• Dynamic linking
• FFmpeg source
• Configure script
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L I C E N S E C O M P L I A N C E
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L I C E N S E C O M P L I A N C E
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F F M P E G P R O S
• Modular
• Support for codecs
• Versatile
• Well documented
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F F M P E G C H A L L E N G E S
• Licensing
• Slow
• Large
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M P 4 PA R S E R
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M P 4 PA R S E R F E AT U R E S
• Concatenation
• Trimming
• Muxing
• Demuxing
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M P 4 PA R S E R U S A G E
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M P 4 PA R S E R D E M O
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M P 4 PA R S E R P R O S
• Java library
• Fast
• Clean API
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M P 4 PA R S E R C H A L L E N G E S
• Limited functionality
• No encoding and decoding
• Concatenates only if inputs have
same format
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R E S O U R C E S
• https://github.com/guardianproject/android-
ffmpeg
• https://github.com/Yelp/ffmpeg-android
• https://github.com/inFullMobile/videokit-
ffmpeg-android
• https://www.ffmpeg.org/legal.html
• https://github.com/sannies/mp4parser
• https://github.com/TeamWanari/RxMp4Parser
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O A N D A I S H I R I N G !
jobs.oanda.com
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T H A N K Y O U !
Q U E S T I O N S ?
@ n a m r a t a C o d e s
https://github.com/namrata-b/talks/