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  • Converting Real Media with ffmpeg

    7 août 2013, par Eric Arenson

    I have a number of old crusty Real Media files I need to convert and was hoping to write a script to batch process them. I'm able to do a Real Media -> AVI conversion with FFMpegX, but when I try to replicate the conversion with ffmpeg, it always errors out with something like :

    [avi @ 0x10084fa00] Too large number of skipped frames 117425 > 60000

    It may have something to do with the funky format of these Real Media files :

    Duration: 01:28:23.42, start: 0.000000, bitrate: 448 kb/s
    
    Stream #0:0: Data: none, 32 kb/s
    
    Stream #0:1: Data: none, 192 kb/s
    
    Stream #0:2: Audio: sipr (sipr / 0x72706973), 8000 Hz, mono, flt, 6 kb/s
    
    Stream #0:3: Video: rv20 (RV20 / 0x30325652), yuv420p, 320x240, 13 kb/s, 15 fps, 15 tbr, 1k tbn, 1k tbc
    
    Stream #0:4: Video: rv20 (RV20 / 0x30325652), yuv420p, 320x240, 8 kb/s, 15 fps, 15 tbr, 1k tbn, 1k tbc
    
    Stream #0:5: Video: rv20 (RV20 / 0x30325652), yuv420p, 320x240, 5 kb/s, 15 fps, 15 tbr, 1k tbn, 1k tbc
    
    Stream #0:6: Video: rv20 (RV20 / 0x30325652), yuv420p, 320x240, 27 kb/s, 15 fps, 15 tbr, 1k tbn, 1k tbc
    
    Stream #0:7: Audio: cook (cook / 0x6B6F6F63), 22050 Hz, mono, fltp, 32 kb/s
    
    Stream #0:8: Video: rv20 (RV20 / 0x30325652), yuv420p, 320x240, 192 kb/s, 30 fps, 30 tbr, 1k tbn, 1k tbc
    
    Stream #0:9: Video: rv20 (RV20 / 0x30325652), yuv420p, 320x240, 136 kb/s, 30 fps, 30 tbr, 1k tbn, 1k tbc
    
    Stream #0:10: Audio: sipr (sipr / 0x72706973), 8000 Hz, mono, flt, 6 kb/s
    
    Stream #0:11: Audio: sipr (sipr / 0x72706973), 8000 Hz, mono, flt, 6 kb/s
    
    Stream #0:12: Video: rv20 (RV20 / 0x30325652), yuv420p, 320x240, 13 kb/s, 15 fps, 15 tbr, 1k tbn, 1k tbc
    
    Stream #0:13: Video: rv20 (RV20 / 0x30325652), yuv420p, 320x240, 13 kb/s, 15 fps, 15 tbr, 1k tbn, 1k tbc
    
    Stream #0:14: Video: rv20 (RV20 / 0x30325652), yuv420p, 320x240, 13 kb/s, 15 fps, 15 tbr, 1k tbn, 1k tbc
    
    Stream #0:15: Video: rv20 (RV20 / 0x30325652), yuv420p, 320x240, 5 kb/s, 15 fps, 15 tbr, 1k tbn, 1k tbc

    Does anyone have any tips on either how to find out what FFMpegX is doing to make the conversion work, or a better way to go about using ffmpeg to do this ?

    EDIT

    Including the ffmpeg command (thank you to @Mondain for teaching me about the stream mapping !) and output :

    Command :

    ffmpeg -i cc121307pm.rm -map 0:8 -map 0:7 -c:v libx264 -c:a libfaac -b:a 32k test.avi

    Output :

    ffmpeg version 1.2.1 Copyright (c) 2000-2013 the FFmpeg developers
    
  built on Aug  7 2013 12:29:30 with gcc 4.2.1 (GCC) (Apple Inc. build 5664)
    
  configuration: --prefix=/usr/local/Cellar/ffmpeg/1.2.1 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-nonfree --enable-hardcoded-tables --enable-avresample --enable-vda --cc=/usr/bin/gcc-4.2 --host-cflags='-Os -w -pipe -march=core2 -msse4.1 -mmacosx-version-min=10.6' --host-ldflags=-L/usr/local/lib --enable-libx264 --enable-libfaac --enable-libmp3lame --enable-libxvid
    
  libavutil      52. 18.100 / 52. 18.100
    
  libavcodec     54. 92.100 / 54. 92.100
    
  libavformat    54. 63.104 / 54. 63.104
    
  libavdevice    54.  3.103 / 54.  3.103
    
  libavfilter     3. 42.103 /  3. 42.103
    
  libswscale      2.  2.100 /  2.  2.100
    
  libswresample   0. 17.102 /  0. 17.102
    
  libpostproc    52.  2.100 / 52.  2.100
    
[rm @ 0x10180f200] Unsupported stream type 00000265
    
[rm @ 0x10180f200] Unsupported stream type 00000652
    
[rm @ 0x10180f200] max_analyze_duration 5000000 reached at 5004000 microseconds
    
Input #0, rm, from 'input.rm':
    
  Metadata:
    
    File ID         : 41deac0f-94fb-3595-325c-c717943bc532
    
    Content Rating  : (PICS-1.1 "http://www.classify.org/safesurf" labels comment "RealProducer Plus 8.5.0.200 Windows" ratings (SS~~000 1))
    
    Modification Date: 12/13/2007 16:26:16
    
    Generated By    : RealProducer Plus 8.5.0.200 Windows
    
    Keywords        : 
    
    Abstract        : 
    
    Target Audiences: 28K Modem (20 Kbps);56K Modem (34 Kbps);256K DSL/Cable Modem (225 Kbps);
    
    Video Quality   : Normal Motion Video
    
    Audio Format    : Voice Only
    
    Creation Date   : 12/13/2007 14:57:49
    
    ASMRuleBook     : #($Bandwidth < 15000),Stream2Bandwidth = 6500, Stream3Bandwidth = 5499;#($Bandwidth >= 15000) && ($Bandwidth < 20000),Stream2Ba
    
    title           : 
    
    author          : 
    
    copyright       : ?2007
    
    comment         : 
    
  Duration: 01:28:23.42, start: 0.000000, bitrate: 448 kb/s
    
    Stream #0:0: Data: none, 32 kb/s
    
    Stream #0:1: Data: none, 192 kb/s
    
    Stream #0:2: Audio: sipr (sipr / 0x72706973), 8000 Hz, mono, flt, 6 kb/s
    
    Stream #0:3: Video: rv20 (RV20 / 0x30325652), yuv420p, 320x240, 13 kb/s, 15 fps, 15 tbr, 1k tbn, 1k tbc
    
    Stream #0:4: Video: rv20 (RV20 / 0x30325652), yuv420p, 320x240, 8 kb/s, 15 fps, 15 tbr, 1k tbn, 1k tbc
    
    Stream #0:5: Video: rv20 (RV20 / 0x30325652), yuv420p, 320x240, 5 kb/s, 15 fps, 15 tbr, 1k tbn, 1k tbc
    
    Stream #0:6: Video: rv20 (RV20 / 0x30325652), yuv420p, 320x240, 27 kb/s, 15 fps, 15 tbr, 1k tbn, 1k tbc
    
    Stream #0:7: Audio: cook (cook / 0x6B6F6F63), 22050 Hz, mono, fltp, 32 kb/s
    
    Stream #0:8: Video: rv20 (RV20 / 0x30325652), yuv420p, 320x240, 192 kb/s, 30 fps, 30 tbr, 1k tbn, 1k tbc
    
    Stream #0:9: Video: rv20 (RV20 / 0x30325652), yuv420p, 320x240, 136 kb/s, 30 fps, 30 tbr, 1k tbn, 1k tbc
    
    Stream #0:10: Audio: sipr (sipr / 0x72706973), 8000 Hz, mono, flt, 6 kb/s
    
    Stream #0:11: Audio: sipr (sipr / 0x72706973), 8000 Hz, mono, flt, 6 kb/s
    
    Stream #0:12: Video: rv20 (RV20 / 0x30325652), yuv420p, 320x240, 13 kb/s, 15 fps, 15 tbr, 1k tbn, 1k tbc
    
    Stream #0:13: Video: rv20 (RV20 / 0x30325652), yuv420p, 320x240, 13 kb/s, 15 fps, 15 tbr, 1k tbn, 1k tbc
    
    Stream #0:14: Video: rv20 (RV20 / 0x30325652), yuv420p, 320x240, 13 kb/s, 15 fps, 15 tbr, 1k tbn, 1k tbc
    
    Stream #0:15: Video: rv20 (RV20 / 0x30325652), yuv420p, 320x240, 5 kb/s, 15 fps, 15 tbr, 1k tbn, 1k tbc
    
[libx264 @ 0x101889c00] using cpu capabilities: MMX2 SSE2Fast SSSE3 FastShuffle SSE4.1 Cache64
    
[libx264 @ 0x101889c00] profile High, level 1.3
    
Output #0, avi, to 'test.avi':
    
  Metadata:
    
    File ID         : 41deac0f-94fb-3595-325c-c717943bc532
    
    Content Rating  : (PICS-1.1 "http://www.classify.org/safesurf" labels comment "RealProducer Plus 8.5.0.200 Windows" ratings (SS~~000 1))
    
    Modification Date: 12/13/2007 16:26:16
    
    Generated By    : RealProducer Plus 8.5.0.200 Windows
    
    Keywords        : 
    
    Abstract        : 
    
    Target Audiences: 28K Modem (20 Kbps);56K Modem (34 Kbps);256K DSL/Cable Modem (225 Kbps);
    
    Video Quality   : Normal Motion Video
    
    Audio Format    : Voice Only
    
    Creation Date   : 12/13/2007 14:57:49
    
    ASMRuleBook     : #($Bandwidth < 15000),Stream2Bandwidth = 6500, Stream3Bandwidth = 5499;#($Bandwidth >= 15000) && ($Bandwidth < 20000),Stream2Ba
    
    INAM            : 
    
    author          : 
    
    ICOP            : ?2007
    
    ICMT            : 
    
    ISFT            : Lavf54.63.104
    
    Stream #0:0: Video: h264 (H264 / 0x34363248), yuv420p, 320x240, q=-1--1, 30 tbn, 30 tbc
    
    Stream #0:1: Audio: aac ([255][0][0][0] / 0x00FF), 22050 Hz, mono, s16, 32 kb/s
    
Stream mapping:
    
  Stream #0:8 -> #0:0 (rv20 -> libx264)
    
  Stream #0:7 -> #0:1 (cook -> libfaac)
    
Press [q] to stop, [?] for help
    
[rm @ 0x10180f200] DATA tag in middle of chunk, file may be broken.
    
Truncating packet of size 775215378 to 283607526
    
[rm @ 0x10180f200] Impossibly sized packet
    
Truncating packet of size 686581284 to 279055389
    
[rm @ 0x10180f200] Impossibly sized packet
    
Truncating packet of size 845942319 to 279042877
    
[rm @ 0x10180f200] Impossibly sized packet
    
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[rm @ 0x10180f200] DATA tag in middle of chunk, file may be broken.
    
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[rm @ 0x10180f200] Impossibly sized packet
    
Truncating packet of size 183681448 to 2582872
    
[rm @ 0x10180f200] Impossibly sized packet
    
input.rm: Input/output error
    
frame=    0 fps=0.0 q=0.0 Lsize=      10kB time=00:00:00.00 bitrate=N/A    
    
video:0kB audio:0kB subtitle:0 global headers:0kB muxing overhead inf%
    
Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)

  • Converting Real Media with ffmpeg

    22 avril 2018, par Eric Arenson

    I have a number of old crusty Real Media files I need to convert and was hoping to write a script to batch process them. I’m able to do a Real Media -> AVI conversion with FFMpegX, but when I try to replicate the conversion with ffmpeg, it always errors out with something like :

    [avi @ 0x10084fa00] Too large number of skipped frames 117425 > 60000

    It may have something to do with the funky format of these Real Media files :

    Duration: 01:28:23.42, start: 0.000000, bitrate: 448 kb/s
    
    Stream #0:0: Data: none, 32 kb/s
    
    Stream #0:1: Data: none, 192 kb/s
    
    Stream #0:2: Audio: sipr (sipr / 0x72706973), 8000 Hz, mono, flt, 6 kb/s
    
    Stream #0:3: Video: rv20 (RV20 / 0x30325652), yuv420p, 320x240, 13 kb/s, 15 fps, 15 tbr, 1k tbn, 1k tbc
    
    Stream #0:4: Video: rv20 (RV20 / 0x30325652), yuv420p, 320x240, 8 kb/s, 15 fps, 15 tbr, 1k tbn, 1k tbc
    
    Stream #0:5: Video: rv20 (RV20 / 0x30325652), yuv420p, 320x240, 5 kb/s, 15 fps, 15 tbr, 1k tbn, 1k tbc
    
    Stream #0:6: Video: rv20 (RV20 / 0x30325652), yuv420p, 320x240, 27 kb/s, 15 fps, 15 tbr, 1k tbn, 1k tbc
    
    Stream #0:7: Audio: cook (cook / 0x6B6F6F63), 22050 Hz, mono, fltp, 32 kb/s
    
    Stream #0:8: Video: rv20 (RV20 / 0x30325652), yuv420p, 320x240, 192 kb/s, 30 fps, 30 tbr, 1k tbn, 1k tbc
    
    Stream #0:9: Video: rv20 (RV20 / 0x30325652), yuv420p, 320x240, 136 kb/s, 30 fps, 30 tbr, 1k tbn, 1k tbc
    
    Stream #0:10: Audio: sipr (sipr / 0x72706973), 8000 Hz, mono, flt, 6 kb/s
    
    Stream #0:11: Audio: sipr (sipr / 0x72706973), 8000 Hz, mono, flt, 6 kb/s
    
    Stream #0:12: Video: rv20 (RV20 / 0x30325652), yuv420p, 320x240, 13 kb/s, 15 fps, 15 tbr, 1k tbn, 1k tbc
    
    Stream #0:13: Video: rv20 (RV20 / 0x30325652), yuv420p, 320x240, 13 kb/s, 15 fps, 15 tbr, 1k tbn, 1k tbc
    
    Stream #0:14: Video: rv20 (RV20 / 0x30325652), yuv420p, 320x240, 13 kb/s, 15 fps, 15 tbr, 1k tbn, 1k tbc
    
    Stream #0:15: Video: rv20 (RV20 / 0x30325652), yuv420p, 320x240, 5 kb/s, 15 fps, 15 tbr, 1k tbn, 1k tbc

    Does anyone have any tips on either how to find out what FFMpegX is doing to make the conversion work, or a better way to go about using ffmpeg to do this ?

    EDIT

    Including the ffmpeg command (thank you to @Mondain for teaching me about the stream mapping !) and output :

    Command :

    ffmpeg -i cc121307pm.rm -map 0:8 -map 0:7 -c:v libx264 -c:a libfaac -b:a 32k test.avi

    Output :

    ffmpeg version 1.2.1 Copyright (c) 2000-2013 the FFmpeg developers
    
  built on Aug  7 2013 12:29:30 with gcc 4.2.1 (GCC) (Apple Inc. build 5664)
    
  configuration: --prefix=/usr/local/Cellar/ffmpeg/1.2.1 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-nonfree --enable-hardcoded-tables --enable-avresample --enable-vda --cc=/usr/bin/gcc-4.2 --host-cflags='-Os -w -pipe -march=core2 -msse4.1 -mmacosx-version-min=10.6' --host-ldflags=-L/usr/local/lib --enable-libx264 --enable-libfaac --enable-libmp3lame --enable-libxvid
    
  libavutil      52. 18.100 / 52. 18.100
    
  libavcodec     54. 92.100 / 54. 92.100
    
  libavformat    54. 63.104 / 54. 63.104
    
  libavdevice    54.  3.103 / 54.  3.103
    
  libavfilter     3. 42.103 /  3. 42.103
    
  libswscale      2.  2.100 /  2.  2.100
    
  libswresample   0. 17.102 /  0. 17.102
    
  libpostproc    52.  2.100 / 52.  2.100
    
[rm @ 0x10180f200] Unsupported stream type 00000265
    
[rm @ 0x10180f200] Unsupported stream type 00000652
    
[rm @ 0x10180f200] max_analyze_duration 5000000 reached at 5004000 microseconds
    
Input #0, rm, from 'input.rm':
    
  Metadata:
    
    File ID         : 41deac0f-94fb-3595-325c-c717943bc532
    
    Content Rating  : (PICS-1.1 "http://www.classify.org/safesurf" labels comment "RealProducer Plus 8.5.0.200 Windows" ratings (SS~~000 1))
    
    Modification Date: 12/13/2007 16:26:16
    
    Generated By    : RealProducer Plus 8.5.0.200 Windows
    
    Keywords        : 
    
    Abstract        : 
    
    Target Audiences: 28K Modem (20 Kbps);56K Modem (34 Kbps);256K DSL/Cable Modem (225 Kbps);
    
    Video Quality   : Normal Motion Video
    
    Audio Format    : Voice Only
    
    Creation Date   : 12/13/2007 14:57:49
    
    ASMRuleBook     : #($Bandwidth < 15000),Stream2Bandwidth = 6500, Stream3Bandwidth = 5499;#($Bandwidth >= 15000) && ($Bandwidth < 20000),Stream2Ba
    
    title           : 
    
    author          : 
    
    copyright       : ?2007
    
    comment         : 
    
  Duration: 01:28:23.42, start: 0.000000, bitrate: 448 kb/s
    
    Stream #0:0: Data: none, 32 kb/s
    
    Stream #0:1: Data: none, 192 kb/s
    
    Stream #0:2: Audio: sipr (sipr / 0x72706973), 8000 Hz, mono, flt, 6 kb/s
    
    Stream #0:3: Video: rv20 (RV20 / 0x30325652), yuv420p, 320x240, 13 kb/s, 15 fps, 15 tbr, 1k tbn, 1k tbc
    
    Stream #0:4: Video: rv20 (RV20 / 0x30325652), yuv420p, 320x240, 8 kb/s, 15 fps, 15 tbr, 1k tbn, 1k tbc
    
    Stream #0:5: Video: rv20 (RV20 / 0x30325652), yuv420p, 320x240, 5 kb/s, 15 fps, 15 tbr, 1k tbn, 1k tbc
    
    Stream #0:6: Video: rv20 (RV20 / 0x30325652), yuv420p, 320x240, 27 kb/s, 15 fps, 15 tbr, 1k tbn, 1k tbc
    
    Stream #0:7: Audio: cook (cook / 0x6B6F6F63), 22050 Hz, mono, fltp, 32 kb/s
    
    Stream #0:8: Video: rv20 (RV20 / 0x30325652), yuv420p, 320x240, 192 kb/s, 30 fps, 30 tbr, 1k tbn, 1k tbc
    
    Stream #0:9: Video: rv20 (RV20 / 0x30325652), yuv420p, 320x240, 136 kb/s, 30 fps, 30 tbr, 1k tbn, 1k tbc
    
    Stream #0:10: Audio: sipr (sipr / 0x72706973), 8000 Hz, mono, flt, 6 kb/s
    
    Stream #0:11: Audio: sipr (sipr / 0x72706973), 8000 Hz, mono, flt, 6 kb/s
    
    Stream #0:12: Video: rv20 (RV20 / 0x30325652), yuv420p, 320x240, 13 kb/s, 15 fps, 15 tbr, 1k tbn, 1k tbc
    
    Stream #0:13: Video: rv20 (RV20 / 0x30325652), yuv420p, 320x240, 13 kb/s, 15 fps, 15 tbr, 1k tbn, 1k tbc
    
    Stream #0:14: Video: rv20 (RV20 / 0x30325652), yuv420p, 320x240, 13 kb/s, 15 fps, 15 tbr, 1k tbn, 1k tbc
    
    Stream #0:15: Video: rv20 (RV20 / 0x30325652), yuv420p, 320x240, 5 kb/s, 15 fps, 15 tbr, 1k tbn, 1k tbc
    
[libx264 @ 0x101889c00] using cpu capabilities: MMX2 SSE2Fast SSSE3 FastShuffle SSE4.1 Cache64
    
[libx264 @ 0x101889c00] profile High, level 1.3
    
Output #0, avi, to 'test.avi':
    
  Metadata:
    
    File ID         : 41deac0f-94fb-3595-325c-c717943bc532
    
    Content Rating  : (PICS-1.1 "http://www.classify.org/safesurf" labels comment "RealProducer Plus 8.5.0.200 Windows" ratings (SS~~000 1))
    
    Modification Date: 12/13/2007 16:26:16
    
    Generated By    : RealProducer Plus 8.5.0.200 Windows
    
    Keywords        : 
    
    Abstract        : 
    
    Target Audiences: 28K Modem (20 Kbps);56K Modem (34 Kbps);256K DSL/Cable Modem (225 Kbps);
    
    Video Quality   : Normal Motion Video
    
    Audio Format    : Voice Only
    
    Creation Date   : 12/13/2007 14:57:49
    
    ASMRuleBook     : #($Bandwidth < 15000),Stream2Bandwidth = 6500, Stream3Bandwidth = 5499;#($Bandwidth >= 15000) && ($Bandwidth < 20000),Stream2Ba
    
    INAM            : 
    
    author          : 
    
    ICOP            : ?2007
    
    ICMT            : 
    
    ISFT            : Lavf54.63.104
    
    Stream #0:0: Video: h264 (H264 / 0x34363248), yuv420p, 320x240, q=-1--1, 30 tbn, 30 tbc
    
    Stream #0:1: Audio: aac ([255][0][0][0] / 0x00FF), 22050 Hz, mono, s16, 32 kb/s
    
Stream mapping:
    
  Stream #0:8 -> #0:0 (rv20 -> libx264)
    
  Stream #0:7 -> #0:1 (cook -> libfaac)
    
Press [q] to stop, [?] for help
    
[rm @ 0x10180f200] DATA tag in middle of chunk, file may be broken.
    
Truncating packet of size 775215378 to 283607526
    
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input.rm: Input/output error
    
frame=    0 fps=0.0 q=0.0 Lsize=      10kB time=00:00:00.00 bitrate=N/A    
    
video:0kB audio:0kB subtitle:0 global headers:0kB muxing overhead inf%
    
Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)

  • can't find NDK camera and media native API symbols when linking libavdevice.a to libffmpeg.so

    4 septembre 2018, par jianwen

    I’m using NDK tools to build ffmpeg shared lib which will be used in my
    android rtsp project.All needed components are compiled/linked as seperate
    static libs, and at last these libs will be linked as a single shared lib.
    Everything goes well except the last step. error happens when linking
    libavdevice, all symbols in NDK camera and media can not be found, error
    log :

    libavdevice/android_camera.c:702: error: undefined reference    
    
to 'ACameraCaptureSession_stopRepeating'
    
libavdevice/android_camera.c:706: error: undefined reference 
    
to 'ACameraCaptureSession_close'
    
libavdevice/android_camera.c:711: error: undefined reference 
    
to 'ACaptureRequest_removeTarget'
    
libavdevice/android_camera.c:712: error: undefined reference
    
to 'ACaptureRequest_free'
    
libavdevice/android_camera.c:717: error: undefined reference 
    
to 'ACameraOutputTarget_free'
    
libavdevice/android_camera.c:722: error: undefined reference 
    
to 'ACaptureSessionOutputContainer_remove'
    
libavdevice/android_camera.c:724: error: undefined reference 
    
to 'ACaptureSessionOutput_free'
    
libavdevice/android_camera.c:729: error: undefined reference 
    
to 'ANativeWindow_release'
    
libavdevice/android_camera.c:734: error: undefined reference 
    
to 'ACaptureSessionOutputContainer_free'
    
libavdevice/android_camera.c:739: error: undefined reference 
    
to 'ACameraDevice_close'
    
libavdevice/android_camera.c:744: error: undefined reference 
    
to 'AImageReader_delete'
    
libavdevice/android_camera.c:749: error: undefined reference 
    
to 'ACameraMetadata_free'
    
libavdevice/android_camera.c:756: error: undefined reference
    
to 'ACameraManager_delete'
    
libavdevice/android_camera.c:172: error: undefined reference
    
to 'ACameraDevice_getId'
    
libavdevice/android_camera.c:163: error: undefined reference
    
to 'ACameraDevice_getId'
    
libavdevice/android_camera.c:392: error: undefined reference
    
to 'AImageReader_acquireLatestImage'
    
libavdevice/android_camera.c:483: error: undefined reference  
    
to 'AImage_delete'
    
libavdevice/android_camera.c:345: error: undefined reference
    
to 'AImage_getPlanePixelStride'
    
libavdevice/android_camera.c:346: error: undefined reference
    
to 'AImage_getPlaneData'
    
...

    Here is my build script which is ran on my Windows 7 x86_64 PC.

    #!/bin/bash
    
export TMPDIR=D:/other/AndroidDevelopment/ffmpeg-4.0.2/ffmpegtemp 
    
NDK=D:/software/app/android_sdk/ndk-bundle
    
SYSROOT=$NDK/platforms/android-28/arch-x86_64/
    
TOOLCHAIN=$NDK/toolchains/x86_64-4.9/prebuilt/windows-x86_64
    
CPU=x86_64
    
PREFIX=./android/$CPU
    

    
function build_one
    
{
    
    ./configure \
    
    --prefix=$PREFIX \
    
    --enable-static \
    
    --enable-jni \
    
    --enable-pthreads \
    
    --enable-mediacodec \
    
    --disable-asm \
    
    --disable-shared \
    
    --disable-doc \
    
    --disable-ffmpeg \
    
    --disable-ffplay \
    
    --disable-ffprobe \
    
    --disable-doc \
    
    --disable-symver \
    
    --cross-prefix=$TOOLCHAIN/bin/x86_64-linux-android- \
    
    --target-os=android \
    
    --arch=x86_64 \
    
    --enable-cross-compile \
    
    --sysroot=$SYSROOT \
    
    --extra-cflags=" -isysroot $NDK/sysroot  -I$NDK/sysroot/usr/include/x86_64-linux-android" \
    
    --extra-ldflags=-pie 
    
make clean
    
make -j4
    
make install
    

    
$TOOLCHAIN/bin/x86_64-linux-android-ld \
    
-rpath-link=$SYSROOT/usr/lib64 \
    
-L$SYSROOT/usr/lib64 \
    
-L$PREFIX/lib \
    
-soname libffmpeg.so -shared -nostdlib -Bsymbolic --whole-archive --no- undefined -o \
    
$PREFIX/libffmpeg.so \
    
libavcodec/libavcodec.a \
    
libavfilter/libavfilter.a \
    
libswresample/libswresample.a \
    
libavformat/libavformat.a \
    
libavutil/libavutil.a \
    
libswscale/libswscale.a \
    
libavdevice/libavdevice.a \
    
-lc -lm -lz -ldl -llog --dynamic-linker=/system/bin/linker \
    
$TOOLCHAIN/lib/gcc/x86_64-linux-android/4.9.x/libgcc.a \
    
}
    
build_one

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