Looking for a silver bullet to edit videos on Android.

Seungwon Lee
LINE Plus AppDev5 Android Engineer
https://linedevday.linecorp.com/jp/2019/sessions/F2-2

Transcript

1. 2019 DevDay Looking for a Silver Bullet To Edit Videos on Android. > Seungwon Lee > LINE Plus AppDev5 Android Engineer
2. Agenda > Why Do We Need a Silver Bullet? > What Should We Know in Advance? > How Does android-transcoder Work? > What is Cruiser? > Troubleshooting
3. Agenda > Why Do We Need a Silver Bullet? > What Should We Know in Advance? > How Does android-transcoder Work? > What is Cruiser? > Troubleshooting
4. When You Upload a Video in LINE Chatroom Timeline Video Profile
5. Processing Video Client-side Overlay stickers Adjust video size …
6. Why Do We Need a Silver Bullet?
7. How to Resolve the Issues Device A Device B Device C
8. Blacklist > List of devices that had problems during video processing. Device A Device B Device C Device D …
9. Blacklist > Blacklisted devices were redirected so that client-side video processing would not occur Bypass Device A Device B Device C Device D …
10. Blacklisted Devices *H*-E*** *H*-0** S*-0** S*-0** R**** **** * R**** **** * *H*-E*** V**-* *-0**
11. Blacklisted Devices *H*-E*** *H*-0** S*-0** S*-0** R**** **** * R**** **** * *H*-E*** V**-* *-0** 2***** *-0** *-0** E**-* E**-* F**-L** P*** *L*-* V**-* W**-* *T*-A* *L*-* V**-* ***0* M** **V-***9 **V-**9 **e*** *R *C-**F C**** C**** *R*-U*** *R*-**9 D**-***L *i*** * **2-***Y ****H
12. Blacklisted Devices *H*-E*** *H*-0** S*-0** S*-0** R**** **** * R**** **** * *H*-E*** V**-* *-0** 2***** *-0** *-0** E**-* E**-* F**-L** P*** *L*-* V**-* W**-* *T*-A* *L*-* V**-* ***0* M** **V-***9 **V-**9 **e*** *R *C-**F C**** C**** *R*-U*** *R*-**9 D**-***L *i*** * **2-***Y ****H **F-***0 **F-***0 **F-**9 **F-***0 **A_***0 **R-***0 **Y-*L **R-***0 **E-***0 **E-***2 **R-***0 **Y-* *E-***0 **A-**1 **A-**1 ****W *7-**0 ****W **V-***L **E-**2 **E-**4 **E-**1 **E-**3 **E-***0
13. Android Wars: A New Hope {Episode 4) > android-transcoder made by Yuya Tanaka > https://github.com/ypresto/android-transcoder > Written with pure Java without codec licensing issues. > Supports OpenGL renderer
14. Android Wars: A New Hope {Episode 4) Legacy Video Processor in LINE android- transcoder *A**** P* X O *A**** H***** X O *A**** P* X O *A**** H***** X X *A**** M***** O O > android-transcoder made by Yuya Tanaka > https://github.com/ypresto/android-transcoder > Written with pure Java without codec licensing issues. > Supports OpenGL renderer
15. Agenda > Why Do We Need a Silver Bullet? > What Should We Know in Advance? > How Does android-transcoder Work? > What is Cruiser? > Troubleshooting
17. Video Format : MP4 Video Codec : H.264 Audio Codec : AAC
18. Video Frame
19. Codec Encoding (H.264)
20. Codec Encoding (H.264) Decoding (H.264)
21. Codec Encoding (AAC) Decoding (AAC)
22. Audio Track (AAC) Video Track (H.264) MP4 Container Video Format(Container) Reference: - https://en.wikipedia.org/wiki/Video_file_format - https://en.wikipedia.org/wiki/Codec
23. Transcoding Trans - coding Transfer - Encoding
24. Vorbis Audio VP8 Video 3GP Container Friend A Mine Transcoding Vorbis, VP8 (X) AAC, H.264 (O)
25. AAC Audio H.264 Video MP4 Container Vorbis Audio VP8 Video 3GP Container Encoder (AAC) Decoder (Vorbis) Friend A Mine Transcoding Encoder (H.264) Decoder (VP8) Vorbis, VP8 (X) AAC, H.264 (O)
26. Agenda > Why Do We Need a Silver Bullet? > What Should We Know in Advance? > How Does android-transcoder Work? > What is Cruiser? > Troubleshooting
27. android-transcoder Audio Decoder Video Decoder Audio Encoder Video Encoder Muxer Video OpenGL Renderer Extractor Audio Track Video Track Video Container Audio Track Video Track Video Container Reference: https://github.com/ypresto/android-transcoder
28. android-transcoder Audio Decoder Video Decoder Audio Encoder Video Encoder Muxer Video OpenGL Renderer Extractor Audio Track Video Track Video Container Audio Track Video Track Video Container Reference: https://github.com/ypresto/android-transcoder
29. android-transcoder Audio Decoder Video Decoder Audio Encoder Video Encoder Muxer Video OpenGL Renderer Extractor Audio Track Video Track Video Container Audio Track Video Track Video Container Extracting, Decoding Rendering Encoding, Muxing Reference: https://github.com/ypresto/android-transcoder
30. android-transcoder Audio Decoder Video Decoder Audio Encoder Video Encoder Muxer Video OpenGL Renderer Extractor Audio Track Video Track Video Container Audio Track Video Track Video Container Extracting, Decoding Rendering Encoding, Muxing Reference: https://github.com/ypresto/android-transcoder
31. How to Extract/Decode a Video Extractor android.media.MediaExtractor Audio Decoder Video Decoder Audio Encoder Video Encoder Muxer Video OpenGL Renderer Audio Track Video Track Video Container Audio Track Video Track Video Container Reference: https://github.com/ypresto/android-transcoder
32. > Query the metadata of each track > Read the encoded data stream > Demux data streams into each track android.media.MediaExtractor Media Extractor Audio info: AAC Video info: H.264 Audio Track (AAC) Video Track (H.264) MP4 Container
33. > Query the metadata of each track > Read the encoded data stream > Demux data streams into each track android.media.MediaExtractor Media Extractor Audio info: AAC Video info: H.264 Audio Track (AAC) Video Track (H.264) MP4 Container Audio Decoder Video Decoder
34. How to Extract Video and Audio Media Extractor Time Audio Track (AAC) Video Track (H.264) MP4 Container val size = mediaExtractor.readSampleData(byteBuf, offset) val presentationTimeUs = mediaExtractor.getSampleTime()
35. How to Extract Video and Audio Data Media Extractor mediaExtractor.advance() val size = mediaExtractor.readSampleData(byteBuf, offset) End of Stream Time Audio Track (AAC) Video Track (H.264) MP4 Container End of Stream … …
36. How to Decode a Video Audio Decoder Video Decoder Audio Encoder Video Encoder Muxer Video OpenGL Renderer Extractor android.media.MediaCodec Audio Track Video Track Video Container Audio Track Video Track Video Container Reference: https://github.com/ypresto/android-transcoder
37. How to Decode a Video > Wrapper class for media codecs (i.e. encoder and decoder) > Use together with android.media.MediaExtractor, android.media.MediaMuxer AAC Audio Decoder H.264 Video Decoder
38. How to Extract/Decode a Video Extracting, Decoding Rendering Encoding, Muxing Audio Decoder Video Decoder Audio Encoder Video Encoder Muxer Video OpenGL Renderer Extractor Audio Track Video Track Video Container Audio Track Video Track Video Container Reference: https://github.com/ypresto/android-transcoder
39. How to Extract/Decode a Video Media Extractor Audio Track (AAC) Video Track (H.264) MP4 Container …
40. How to Extract/Decode a Video Video Decoder Media Extractor Audio Track (AAC) Video Track (H.264) MP4 Container
41. How to Extract/Decode a Video Video Decoder Media Extractor Audio Track (AAC) Video Track (H.264) MP4 Container Empty Input Buffer
42. How to Extract/Decode a Video Video Decoder Media Extractor Audio Track (AAC) Video Track (H.264) MP4 Container Empty Input Buffer Fill Input Buffer
43. How to Extract/Decode a Video Video Decoder Output Surface Media Extractor Audio Track (AAC) Video Track (H.264) MP4 Container Empty Input Buffer Fill Input Buffer Video Renderer
44. How to Extract/Decode a Video Video Decoder Output Surface Media Extractor Audio Track (AAC) Video Track (H.264) MP4 Container Video Renderer onFrameAvailable Empty Input Buffer Fill Input Buffer
45. How to Extract/Decode a Video Video Decoder Output Surface Media Extractor Audio Track (AAC) Video Track (H.264) MP4 Container Video Renderer onFrameAvailable Released Buffer in Surface Empty Input Buffer Fill Input Buffer
46. Rendering Audio Decoder Video Decoder Audio Encoder Video Encoder Muxer Video OpenGL Renderer Extractor Audio Track Video Track Video Container Audio Track Video Track Video Container Extracting, Decoding Rendering Encoding, Muxing Reference: https://github.com/ypresto/android-transcoder
47. How to Render a Video Audio Decoder Video Decoder Audio Encoder Video Encoder Muxer Video OpenGL Renderer Extractor Audio Track Video Track Video Container Audio Track Video Track Video Container Extracting, Decoding Rendering Encoding, Muxing Output Surface Input Surface Frame Buffer Reference: https://github.com/ypresto/android-transcoder
48. How to Render a Video Audio Decoder Video Decoder Audio Encoder Video Encoder Muxer Video OpenGL Renderer Extractor Audio Track Video Track Video Container Audio Track Video Track Video Container Extracting, Decoding Rendering Encoding, Muxing Output Surface Input Surface Frame Buffer Render Reference: https://github.com/ypresto/android-transcoder
49. How to Render a Video Audio Decoder Video Decoder Audio Encoder Video Encoder Muxer Video OpenGL Renderer Extractor Audio Track Video Track Video Container Audio Track Video Track Video Container Extracting, Decoding Rendering Encoding, Muxing Output Surface Input Surface Frame Buffer Render Render Reference: https://github.com/ypresto/android-transcoder
50. How to Render a Video > OutputSurface and InputSurface will be bound with the current OpenGL environment Output Surface from Decoder FrameBuffer Input Surface to Encoder
51. How to Render a Video > Pixel data of a video frame is drawn into OutputSurface of the decoder 720 X 1280 Output Surface from Decoder FrameBuffer Input Surface to Encoder
52. How to Render a Video Output Surface from Decoder FrameBuffer Input Surface to Encoder > We can reduce a video frame by drawing it on FrameBuffer in OpenGL 720 X 1280 540 X 960
53. How to Render a Video > We pass the resized frame to InputSurface of the encoder 540 X 960 720 X 1280 540 X 960 Output Surface from Decoder FrameBuffer Input Surface to Encoder
54. How to Encode/Mux a Video Audio Decoder Video Decoder Audio Encoder Video Encoder Muxer Video OpenGL Renderer Extractor Audio Track Video Track Video Container Audio Track Video Track Video Container Extracting, Decoding Rendering Encoding, Muxing Reference: https://github.com/ypresto/android-transcoder
55. How to Extract/Decode a Video Video OpenGL Renderer Input Surface Video Encoder
56. Output Buffer How to Extract/Decode a Video Video OpenGL Renderer Request Encoding Input Surface Video Encoder
57. Muxer How to Extract/Decode a Video Video OpenGL Renderer Request Encoding Audio Track Video Track Input Surface Output Buffer Release Output Buffer Video Encoder
58. How to Encode/Mux a Video Muxer android.media.MediaMuxer Audio Decoder Video Decoder Audio Encoder Video Encoder Muxer Video OpenGL Renderer Extractor Audio Track Video Track Video Container Audio Track Video Track Video Container Reference: https://github.com/ypresto/android-transcoder
59. android.media.MediaMuxer > Mux encoded streams of audio/video > Supports MP4, WebM and 3GP files AAC Encoder H.264 Encoder Media Muxer Audio Track (AAC) Video Track (H.264) Video Container Reference: - https://developer.android.com/reference/android/media/MediaMuxer - https://developer.android.com/guide/topics/media/media-formats
60. android.media.MediaMuxer Media Muxer mediaMuxer.writeSampleData(trackIndex, byteBuf, bufferInfo) -> Audio Track (AAC) Video Track (H.264) Video Container Time
61. android.media.MediaMuxer Media Muxer mediaMuxer.writeSampleData(trackIndex, byteBuf, bufferInfo) -> Audio Track (AAC) Video Track (H.264) Video Container End of stream Time End of stream … …
62. How Does android-transcoder Work Audio Decoder Video Decoder Audio Encoder Video Encoder Muxer Video OpenGL Renderer Extractor Audio Track Video Track Video Container Audio Track Video Track Video Container Reference: https://github.com/ypresto/android-transcoder
63. I think you completely understand it
64. Adopting android-transcoder to LINE
65. Issues with adopting android-transcoder to LINE
66. Audio Features Didn’t Exist Audio sampler Audio Decoder Video Decoder Audio Encoder Video Encoder Muxer Video OpenGL Renderer Extractor Audio Track Video Track Video Container Audio Track Video Track Video Container
67. Overlaying Stickers Didn’t Exist Audio sampler Overlay Sticker Audio Decoder Video Decoder Audio Encoder Video Encoder Muxer Video OpenGL Renderer Extractor Audio Track Video Track Video Container Audio Track Video Track Video Container
68. Renovate to new project: Cruiser
69. Agenda > Why Do We Need a Silver Bullet? > What Should We Know in Advance? > How Does android-transcoder Work? > What is Cruiser? > Troubleshooting
70. Added Features to Cruiser v1.0 Container MP4 Video Codec H.264 Bitrate 2 Mbit/s Resolution 720*1280 Trim range 1200 ms ~ 250300 ms Audio Codec AAC Sample Rate 44.1 kHz ... ... > Adjust sampling rate of audio > Add APIs for a trancoding policy including codec, resolution, trim ranges, and etc.
71. Audio Sampler Audio Sampler > Adjust sampling rate of audio Audio Decoder Video Decoder Audio Encoder Video Encoder Muxer Video OpenGL Renderer Extractor Audio Track Video Track Video Container Audio Track Video Track Video Container
72. Audio Sampler Audio Sampler AAC Decoder AAC Encoder > Based on libsamplerate made by erikd > https://github.com/erikd/libsamplerate > A library for performing sample rate conversion of audio data 320 kbit/s 96 kbit/s
73. Cruiser v1.0 Features > Adjusts video size and sampling audio with a simple policy for transcoding > Trims video Container MP4 Video Codec H.264 Bitrate 2 Mbit/s Resolution 720*1280 Trim range 1200 ms ~ 250300 ms Audio Codec AAC Samplerate 44.1 kHz
74. Cruiser v1.0 Features > Adjusts video size and sampling audio with a simple policy for transcoding > Trims video > Mutes audio X Container MP4 Video Codec H.264 Bitrate 2 Mbit/s Resolution 720*1280 Trim range 1200 ms ~ 250300 ms Audio Codec AAC Samplerate 44.1 kHz
75. Cruiser v1.1 Feature > Overlays LINE static and animated stickers on a video
76. Cruiser v1.1 Main Feature Audio sampler Overlay Sticker Audio Decoder Video Decoder Audio Encoder Video Encoder Muxer Video OpenGL Renderer Extractor Audio Track Video Track Video Container Audio Track Video Track Video Container
77. How Does Cruiser Overlay A Sticker > OutputSurface and InputSurface will bind with the current OpenGL environment Output Surface from Decoder FrameBuffer Input Surface to Encoder
78. How Does Cruiser Overlay A Sticker > Pixel data of a video frame is copied into OutputSurface of the decoder Output Surface from Decoder FrameBuffer Input Surface to Encoder
79. How Does Cruiser Overlay A Sticker > We load a sticker as a Bitmap instance and replace it to a texture that OpenGL can recognize Teuxture Output Surface from Decoder FrameBuffer Input Surface to Encoder
80. How Does Cruiser Overlay A Sticker > We can draw additionally overlay a sticker on FrameBuffer in OpenGL Output Surface from Decoder FrameBuffer Input Surface to Encoder
81. How Does Cruiser Overlay A Sticker > We pass this frame to InputSurface of the encoder Output Surface from Decoder FrameBuffer Input Surface to Encoder
82. How Does Cruiser Overlay A Sticker > Like this, We can overlay serval stickers on a video frame Output Surface from Decoder FrameBuffer Input Surface to Encoder
83. Blacklisted Devices *H*-E*** *H*-0** S*-0** S*-0** R**** **** * R**** **** * *H*-E*** V**-* *-0** 2***** *-0** *-0** E**-* E**-* F**-L** P*** *L*-* V**-* W**-* *T*-A* *L*-* V**-* ***0* M** **V-***9 **V-**9 **e*** *R *C-**F C**** C**** *R*-U*** *R*-**9 D**-***L *i*** * **2-***Y ****H **F-***0 **F-***0 **F-**9 **F-***0 **A_***0 **R-***0 **Y-*L **R-***0 **E-***0 **E-***2 **R-***0 **Y-* *E-***0 **A-**1 **A-**1 ****W *7-**0 ****W **V-***L **E-**2 **E-**4 **E-**1 **E-**3 **E-***0
84. *H*-E*** *H*-0** S*-0** S*-0** R**** **** * R**** **** * *H*-E*** V**-* *-0** 2***** *-0** *-0** E**-* E**-* F**-L** P*** *L*-* V**-* W**-* *T*-A* *L*-* V**-* ***0* M** **V-***9 **V-**9 **e*** *R *C-**F C**** C**** *R*-U*** *R*-**9 D**-***L *i*** * **2-***Y ****H **F-***0 **F-***0 **F-**9 **F-***0 **A_***0 **R-***0 **Y-*L **R-***0 **E-***0 **E-***2 **R-***0 **Y-* *E-***0 **A-**1 **A-**1 ****W *7-**0 ****W **V-***L **E-**2 **E-**4 **E-**1 **E-**3 **E-***0 Blacklist On Cruiser X
85. *H*-E*** *H*-0** S*-0** S*-0** R**** **** * R**** **** * *H*-E*** V**-* *-0** 2***** *-0** *-0** E**-* E**-* F**-L** P*** *L*-* V**-* W**-* *T*-A* *L*-* V**-* ***0* M** **V-***9 **V-**9 **e*** *R *C-**F C**** C**** *R*-U*** *R*-**9 D**-***L *i*** * **2-***Y ****H **F-***0 **F-***0 **F-**9 **F-***0 **A_***0 **R-***0 **Y-*L **R-***0 **E-***0 **E-***2 **R-***0 **Y-* *E-***0 **A-**1 **A-**1 ****W *7-**0 ****W **V-***L **E-**2 **E-**4 **E-**1 **E-**3 **E-***0 Blacklist On Cruiser X !
86. Can't beat Android fragmentation
87. Agenda > Why Do We Need a Silver Bullet? > What Should We Know in Advance? > How Does android-transcoder Work? > What is Cruiser? > Troubleshooting
88. Troubleshooting Video issues Quality issue Orientation issue Audio issue 0 bit/s Issue Out of Sync Audio and Video Issue Audio Distortion Issue
89. Troubleshooting Video Issues > Quality Issue Orientation Issue Audio Issue 0 bit/s Issue Out of Sync Audio and Video Issue Audio Distortion Issue
90. Low Video Quality Original Video Transcoded Video with a Video Filter
91. A Video Profile Configuration Video Encoder Video Encoder Cruiser Device Camera High Profile Video High Profile Video
92. A Video Profile Configuration Video Encoder Video Encoder Cruiser Device Camera High Profile Video Base Profile Video
93. Low Quality Due to Video Profiles Base Profile Video High Profile Video
94. Low Quality Due to Video Profiles Video Encoder Cruiser High Profile Video > Don’t leave a device to choose a video profile High Profile Video Encoder Cruiser Base Profile Video Base Profile
95. Troubleshooting Video Issues Quality Issue > Orientation Issue Audio Issue 0 bit/s Issue Out of Sync Audio and Video Issue Audio Distortion Issue
96. Rotated Video Original Video Transcoded Video
97. Orientation Setting to Encoder Video Encoder Muxer 90 Orientation = 90 Extractor 90 90
98. Orientation Setting to Encoder X 90 Ignored Video Encoder Muxer 90 Orientation = 90 Extractor 90
99. Video Rotated Issue 90 Video Encoder Muxer 90 Orientation = 90 Extractor 90
100. Video Rotated Issue > Don’t set the orientation value of a video to an encoder Video Encoder Muxer 90 Orientation = 90 Extractor 90 X
101. Troubleshooting Video Issues Quality Issue Orientation Issue Audio Issue > 0 bit/s Issue Out of Sync Audio and Video Issue Audio Distortion Issue
102. Audio Distortion Original Video Transcoded Video
103. 0 bit/s From MediaExtractor Audio bitrate = 128 kbit/s
104. 0 bit/s Issue Extract the bitrate Audio bitrate = 128 kbit/s Extractor 128 kbit/s
105. 0 bit/s Issue 128 kbit/s 96 kbit/s 96 kbit/s Audio Format Video Format Container Audio Decoder Audio Encoder Muxer Extractor Audio Down Sampler Audio Format Container Video Format 96 kbit/s 48 kbit/s 48 kbit/s 48 kbit/s 48 kbit/s Audio Codec AAC Sample Rate 44.1 kHz Bitrate 96 kbit/s
106. 0 bit/s Issue Audio bitrate = 128 kbit/s Extract the bitrate Extractor 0 kbit/s
107. 0 bit/s Issue > Don’t forget to check 0 values 0 kbit/s 0 kbit/s Audio Format Video Format Container Audio Decoder Audio Encoder Muxer Extractor Audio Down Sampler Audio Format Container Video Format 0 kbit/s 0 kbit/s
108. 0 bit/s Issue > Don’t forget to check 0 values 0 kbit/s 96 kbit/s 96 kbit/s Audio Format Video Format Container Audio Decoder Audio Encoder Muxer Extractor Audio Down Sampler Audio Format Container Video Format 96 kbit/s
109. Troubleshooting Video Issues Quality Issue Orientation Issue Audio Issue 0 bit/s Issue > Out of Sync Audio and Video Issue Audio Distortion Issue
110. Out of Sync Audio and Video Issue Original Video Transcoded video
111. Waiting of Muxer Initialization Muxer Audio Track Video Track Output Buffer Video Encoder
112. Waiting of Muxer Initialization Muxer Audio Track Video Track Output Buffer Release Output Buffer Video Encoder
113. Waiting of Muxer Initialization Muxer Audio Track Video Track Output Buffer Release Output Buffer Video Encoder
114. Waiting of Muxer Initialization Muxer Audio Track Video Track Output Buffer Release Output Buffer Video Encoder
115. Waiting of Muxer Initialization Muxer Audio Track Video Track Output Buffer Video Encoder X MUXER_STATE_UNINITIALIZED
116. Waiting of Muxer Initialization Muxer Audio Track Video Track Queue Video Encoder Output Buffer Release Output Buffer Shallow copy MUXER_STATE_UNINITIALIZED
117. Waiting of Muxer Initialization Muxer Audio Track Video Track Video Encoder MUXER_STATE_STARTED Output Buffer Release Output buffer Pass Output Buffer Queue
118. Waiting of Muxer Initialization Muxer Audio Track Video Track Queue Video Encoder MUXER_STATE_STARTED Output Buffer Release Output buffer
119. Waiting of Muxer Initialization Muxer Audio Track Video Track Video Encoder MUXER_STATE_STARTED Output Buffer Release Output buffer Pass Output Buffer Queue
120. Out of Sync Issue Muxer Audio Track Video Track Pass Output Buffer Queue Video Encoder MUXER_STATE_STARTED Output Buffer Release Output buffer Shallow copy
121. Out of Sync Issue Muxer Audio Track Video Track Pass Output Buffer Queue Video Encoder MUXER_STATE_STARTED Output Buffer Release Output Buffer Deep copy > Don’t rely on release timing of the device
122. Troubleshooting Video Issues Quality Issue Orientation Issue Audio Issue 0 bit/s Issue Out of Sync Audio and Video Issue > Audio Distortion Issue
123. Audio Distortion Problem Original Video Transcoded Video
124. Original Audio Bitrate Audio Distortion Problem Extract the bitrate Extractor 96 kbit/s
125. Audio Distortion Problem After Trimming Extract the bitrate File Analysis 123 kbit/s Extract the bitrate Extractor 24 kbit/s
126. Audio Distortion Problem Audio Format Video Format Container Audio Decoder Audio Encoder Muxer Extractor Audio Down Sampler Audio Format Container Video Format > We transcoded the audio track and resampled the ByteBuffer of the audio > We don’t need to resample this problematic audio track 24 kbit/s (123 kbit/s) 24 kbit/s (123 kbit/s) 24 kbit/s (123 kbit/s) 24 kbit/s (123 kbit/s)
127. Audio Distortion Problem > Cruiser can detect this issue by extracting 24 kbit/s > Cruiser bypasses the resampling process if it has 24 kbit/s Audio Format Video Format Container Audio Decoder Audio Encoder Muxer Extractor Audio Down Sampler Audio Format Container Video Format X X X Audio Stream Bypass 24 kbit/s (123 kbit/s) 24 kbit/s (123 kbit/s)
128. Troubleshooting Video issues Quality issue Orientation issue Audio issue 0 bit/s Issue Out of Sync Audio and Video Issue Audio Distortion Issue
129. Do not count on Android devices You're the only hope
130. Have I found a silver bullet?
131. Blacklisted Devices *H*-E*** *H*-0** S*-0** S*-0** R**** **** * R**** **** * *H*-E*** V**-* *-0** 2***** *-0** *-0** E**-* E**-* F**-L** P*** *L*-* V**-* W**-* *T*-A* *L*-* V**-* ***0* M** **V-***9 **V-**9 **e*** *R *C-**F C**** C**** *R*-U*** *R*-**9 D**-***L *i*** * **2-***Y ****H **F-***0 **F-***0 **F-**9 **F-***0 **A_***0 **R-***0 **Y-*L **R-***0 **E-***0 **E-***2 **R-***0 **Y-* *E-***0 **A-**1 **A-**1 ****W *7-**0 ****W **V-***L **E-**2 **E-**4 **E-**1 **E-**3 **E-***0 X
132. In-progress
133. Cruiser v1.2 features > Make a video with a static image Cruiser v1.3 features > Crop and rotate a video What‘s Next? Cruiser v2.0 features > Each component runs on multiple threads
135. Thank you