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FFMPEG not working from Python subprocess.Popen but works from command line

21 novembre 2017, par Stuart Clarke

I’m trying to run a FFMPEG script from within python 3.5.2. the FFMPEG command runs fine from the command line but fails within the python script.

The function I use to execute the FFMPEG command is

def ffmpeg(args):

    err = None

    command = [

        ffmpegcmd, '-y',

        '-loglevel', loglevel

    ] + args

    print("\n\n\n")

    print(command)

    print("\n\n\n")

    print(" ".join(command))

    ffmpeg = subprocess.Popen(command, stderr=subprocess.PIPE ,stdout=subprocess.PIPE, universal_newlines=True)

    while err == None:

        out, err = ffmpeg.communicate()

        time.sleep(1)

    if err and loglevel=='fatal':

        print(" ".join(command))

        raise Exception(err)

    print(err)

The value for args is :

['-i', '/var/www/temp/film.mp4', '-vf', 'scale=1920:1080:force_original_aspect_ratio=decrease,pad=1920:1080:x=(1920-iw)/2:y=(1080-ih)/2:color=black', '/var/www/temp/videoHD.mp4']

such that the resultant command being passed to subprocess.Popen is :

['ffmpeg', '-y', '-loglevel', 'verbose', '-i', '/var/www/temp/film.mp4', '-vf', 'scale=1920:1080:force_original_aspect_ratio=decrease,pad=1920:1080:x=(1920-iw)/2:y=(1080-ih)/2:color=black', '/var/www/temp/videoHD.mp4']

The value of loglevel is verbose only for troubleshooting but is intended to run as fatal. There are also some print commands only in place for troubleshooting.

The reason for wanting to increase the resolution is so that it can be combined later with higher resolution videos.

The result when running from within python is :

ffmpeg version 3.3.4-2~16.04.york0 Copyright (c) 2000-2017 the FFmpeg developers

  built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.4) 20160609

  configuration: --prefix=/usr --extra-version='2~16.04.york0' --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-stripping --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmp3lame --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 --enable-shared

  libavutil      55. 58.100 / 55. 58.100

  libavcodec     57. 89.100 / 57. 89.100

  libavformat    57. 71.100 / 57. 71.100

  libavdevice    57.  6.100 / 57.  6.100

  libavfilter     6. 82.100 /  6. 82.100

  libavresample   3.  5.  0 /  3.  5.  0

  libswscale      4.  6.100 /  4.  6.100

  libswresample   2.  7.100 /  2.  7.100

  libpostproc    54.  5.100 / 54.  5.100

[h264 @ 0x7f741a37a560] Reinit context to 640x368, pix_fmt: yuv420p

Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/var/www/temp/film.mp4':

  Metadata:

    major_brand     : isom

    minor_version   : 512

    compatible_brands: isomiso2avc1mp41

    encoder         : Lavf57.71.100

  Duration: 00:06:19.80, start: 0.000000, bitrate: 451 kb/s

    Stream #0:0(und): Video: h264 (High), 1 reference frame (avc1 / 0x31637661), yuv420p(left), 640x358 (640x368), 313 kb/s, 30 fps, 30 tbr, 15360 tbn, 60 tbc (default)

    Metadata:

      handler_name    : VideoHandler

    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 128 kb/s (default)

    Metadata:

      handler_name    : SoundHandler

Stream mapping:

  Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))

  Stream #0:1 -> #0:1 (aac (native) -> aac (native))

Press [q] to stop, [?] for help

[h264 @ 0x7f741a3bc700] Reinit context to 640x368, pix_fmt: yuv420p

[graph_1_in_0_1 @ 0x7f741a5315e0] tb:1/48000 samplefmt:fltp samplerate:48000 chlayout:0x3

[Parsed_scale_0 @ 0x7f741a54e000] w:1920 h:1080 flags:'bicubic' interl:0

[graph 0 input from stream 0:0 @ 0x7f741a54f6a0] w:640 h:358 pixfmt:yuv420p tb:1/15360 fr:30/1 sar:0/1 sws_param:flags=2

[Parsed_scale_0 @ 0x7f741a54e000] w:640 h:358 fmt:yuv420p sar:0/1 -> w:1920 h:1074 fmt:yuv420p sar:0/1 flags:0x4

[Parsed_pad_1 @ 0x7f741a54eac0] w:1920 h:1074 -> w:1920 h:1080 x:0 y:2 color:0x000000FF

[libx264 @ 0x7f741a5509e0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2

[libx264 @ 0x7f741a5509e0] profile High, level 4.0

[libx264 @ 0x7f741a5509e0] 264 - core 148 r2795 aaa9aa8 - H.264/MPEG-4 AVC codec - Copyleft 2003-2017 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00

Output #0, mp4, to '/var/www/temp/videoHD.mp4':

  Metadata:

    major_brand     : isom

    minor_version   : 512

    compatible_brands: isomiso2avc1mp41

    encoder         : Lavf57.71.100

    Stream #0:0(und): Video: h264 (libx264), 1 reference frame ([33][0][0][0] / 0x0021), yuv420p(left), 1920x1080, q=-1--1, 30 fps, 15360 tbn, 30 tbc (default)

    Metadata:

      handler_name    : VideoHandler

      encoder         : Lavc57.89.100 libx264

    Side data:

      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1

    Stream #0:1(und): Audio: aac (LC) ([64][0][0][0] / 0x0040), 48000 Hz, stereo, fltp, delay 1024, 128 kb/s (default)

    Metadata:

      handler_name    : SoundHandler

      encoder         : Lavc57.89.100 aac

This results in a file with no content.

When I run the command from the command line I need to add single quotes around the -vf video filters scale=1920:1080:force_original_aspect_ratio=decrease,pad=1920:1080:x=(1920-iw)/2:y=(1080-ih)/2:color=black so the whole command becomes :

ffmpeg -y -loglevel verbose -i /var/www/temp/film.mp4 -vf 'scale=1920:1080:force_original_aspect_ratio=decrease,pad=1920:1080:x=(1920-iw)/2:y=(1080-ih)/2:color=black' /var/www/temp/videoHD.mp4

Running this command gives the required result.

ffmpeg version 3.3.4-2~16.04.york0 Copyright (c) 2000-2017 the FFmpeg developers

  built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.4) 20160609

  configuration: --prefix=/usr --extra-version='2~16.04.york0' --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-stripping --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmp3lame --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 --enable-shared

  libavutil      55. 58.100 / 55. 58.100

  libavcodec     57. 89.100 / 57. 89.100

  libavformat    57. 71.100 / 57. 71.100

  libavdevice    57.  6.100 / 57.  6.100

  libavfilter     6. 82.100 /  6. 82.100

  libavresample   3.  5.  0 /  3.  5.  0

  libswscale      4.  6.100 /  4.  6.100

  libswresample   2.  7.100 /  2.  7.100

  libpostproc    54.  5.100 / 54.  5.100

[h264 @ 0x7f3a55c17560] Reinit context to 640x368, pix_fmt: yuv420p

Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/var/www/temp/film.mp4':

  Metadata:

    major_brand     : isom

    minor_version   : 512

    compatible_brands: isomiso2avc1mp41

    encoder         : Lavf57.71.100

  Duration: 00:06:19.80, start: 0.000000, bitrate: 451 kb/s

    Stream #0:0(und): Video: h264 (High), 1 reference frame (avc1 / 0x31637661), yuv420p(left), 640x358 (640x368), 313 kb/s, 30 fps, 30 tbr, 15360 tbn, 60 tbc (default)

    Metadata:

      handler_name    : VideoHandler

    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 128 kb/s (default)

    Metadata:

      handler_name    : SoundHandler

Stream mapping:

  Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))

  Stream #0:1 -> #0:1 (aac (native) -> aac (native))

Press [q] to stop, [?] for help

[h264 @ 0x7f3a55c59700] Reinit context to 640x368, pix_fmt: yuv420p

[graph_1_in_0_1 @ 0x7f3a55dce5e0] tb:1/48000 samplefmt:fltp samplerate:48000 chlayout:0x3

[Parsed_scale_0 @ 0x7f3a55deb000] w:1920 h:1080 flags:'bicubic' interl:0

[graph 0 input from stream 0:0 @ 0x7f3a55dec6a0] w:640 h:358 pixfmt:yuv420p tb:1/15360 fr:30/1 sar:0/1 sws_param:flags=2

[Parsed_scale_0 @ 0x7f3a55deb000] w:640 h:358 fmt:yuv420p sar:0/1 -> w:1920 h:1074 fmt:yuv420p sar:0/1 flags:0x4

[Parsed_pad_1 @ 0x7f3a55debac0] w:1920 h:1074 -> w:1920 h:1080 x:0 y:2 color:0x000000FF

[libx264 @ 0x7f3a55ded9e0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2

[libx264 @ 0x7f3a55ded9e0] profile High, level 4.0

[libx264 @ 0x7f3a55ded9e0] 264 - core 148 r2795 aaa9aa8 - H.264/MPEG-4 AVC codec - Copyleft 2003-2017 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00

Output #0, mp4, to '/var/www/temp/videoHD.mp4':

  Metadata:

    major_brand     : isom

    minor_version   : 512

    compatible_brands: isomiso2avc1mp41

    encoder         : Lavf57.71.100

    Stream #0:0(und): Video: h264 (libx264), 1 reference frame ([33][0][0][0] / 0x0021), yuv420p(left), 1920x1080, q=-1--1, 30 fps, 15360 tbn, 30 tbc (default)

    Metadata:

      handler_name    : VideoHandler

      encoder         : Lavc57.89.100 libx264

    Side data:

      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1

    Stream #0:1(und): Audio: aac (LC) ([64][0][0][0] / 0x0040), 48000 Hz, stereo, fltp, delay 1024, 128 kb/s (default)

    Metadata:

      handler_name    : SoundHandler

      encoder         : Lavc57.89.100 aac

frame=   46 fps=0.0 q=0.0 size=       0kB time=00:00:01.62 bitrate=   0.0kbits/s

frame=   59 fps= 47 q=29.0 size=     116kB time=00:00:02.04 bitrate= 464.8kbits/

frame=   74 fps= 41 q=29.0 size=     223kB time=00:00:02.56 bitrate= 714.8kbits/

frame=   87 fps= 35 q=29.0 size=     344kB time=00:00:02.98 bitrate= 942.4kbits/

frame=   98 fps= 33 q=29.0 size=     427kB time=00:00:03.34 bitrate=1043.4kbits/

    blah

    blah

    blah

frame=11347 fps= 21 q=29.0 size=   97550kB time=00:06:18.32 bitrate=2112.3kbits/

frame=11363 fps= 21 q=29.0 size=   97713kB time=00:06:18.85 bitrate=2112.8kbits/

frame=11380 fps= 21 q=29.0 size=   97795kB time=00:06:19.41 bitrate=2111.5kbits/

No more output streams to write to, finishing.

frame=11392 fps= 21 q=-1.0 Lsize=   98519kB time=00:06:19.77 bitrate=2125.1kbits/s speed=0.69x    

video:92124kB audio:5986kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.416313%

Input file #0 (/var/www/temp/film.mp4):

  Input stream #0:0 (video): 11392 packets read (14892948 bytes); 11392 frames decoded; 

  Input stream #0:1 (audio): 17803 packets read (6112540 bytes); 17802 frames decoded (18229248 samples); 

  Total: 29195 packets (21005488 bytes) demuxed

Output file #0 (/var/www/temp/videoHD.mp4):

  Output stream #0:0 (video): 11392 frames encoded; 11392 packets muxed (94334785 bytes); 

  Output stream #0:1 (audio): 17802 frames encoded (18229248 samples); 17803 packets muxed (6129981 bytes); 

  Total: 29195 packets (100464766 bytes) muxed

[libx264 @ 0x7f3a55ded9e0] frame I:74    Avg QP:19.08  size: 51540

[libx264 @ 0x7f3a55ded9e0] frame P:3506  Avg QP:21.34  size: 19348

[libx264 @ 0x7f3a55ded9e0] frame B:7812  Avg QP:24.07  size:  2904

[libx264 @ 0x7f3a55ded9e0] consecutive B-frames:  1.3% 20.2%  4.6% 73.9%

[libx264 @ 0x7f3a55ded9e0] mb I  I16..4: 19.7% 73.6%  6.7%

[libx264 @ 0x7f3a55ded9e0] mb P  I16..4:  3.2%  6.4%  0.1%  P16..4: 52.5%  7.6%  2.6%  0.0%  0.0%    skip:27.6%

[libx264 @ 0x7f3a55ded9e0] mb B  I16..4:  0.2%  0.2%  0.0%  B16..8: 23.2%  0.4%  0.0%  direct: 0.5%  skip:75.5%  L0:51.8% L1:46.6% BI: 1.6%

[libx264 @ 0x7f3a55ded9e0] 8x8 transform intra:66.4% inter:94.0%

[libx264 @ 0x7f3a55ded9e0] coded y,uvDC,uvAC intra: 33.6% 53.4% 7.3% inter: 5.3% 14.2% 0.0%

[libx264 @ 0x7f3a55ded9e0] i16 v,h,dc,p: 22% 27%  5% 46%

[libx264 @ 0x7f3a55ded9e0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 29% 19% 20%  4%  7%  7%  7%  5%  4%

[libx264 @ 0x7f3a55ded9e0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 31% 28% 11%  3%  9%  7%  6%  3%  2%

[libx264 @ 0x7f3a55ded9e0] i8c dc,h,v,p: 49% 21% 20% 10%

[libx264 @ 0x7f3a55ded9e0] Weighted P-Frames: Y:0.5% UV:0.1%

[libx264 @ 0x7f3a55ded9e0] ref P L0: 63.4%  8.9% 21.4%  6.3%  0.0%

[libx264 @ 0x7f3a55ded9e0] ref B L0: 89.3%  9.1%  1.6%

[libx264 @ 0x7f3a55ded9e0] ref B L1: 98.1%  1.9%

[libx264 @ 0x7f3a55ded9e0] kb/s:1987.38

[aac @ 0x7f3a55deee80] Qavg: 1160.814

and the resulting video is fine.

Any ideas ?

Cheers,

Stu

Edit

It was suggested that I use a new function to do much the same thing. So I added the following function and used it for the command that I’m having trouble with :

def ffmpegPro(args):

    err = None

    for i, arg in enumerate(args):

        if(" " in arg or "(" in arg or "[" in arg):

            args[i] = "\"" + arg + "\""

    command = [

        ffmpegcmd, '-y',

        '-loglevel', loglevel

    ] + args

    commandStr = " ".join(command)

    print("\n\n\n")

    print(command)

    print("\n\n\n")

    print(commandStr)

    ffmpeg = subprocess.Popen(commandStr, stderr=subprocess.PIPE, stdout=subprocess.PIPE, universal_newlines=True, shell=True)

    while err == None:

        out, err = ffmpeg.communicate()

        time.sleep(1)

    if ffmpeg.returncode == 0 and all([os.path.exists(f) for f in (videoStorage['data_small'], videoStorage['data_big'])]):

        print("Job done.")

    else:

        print("ERROR")

        print(err)

The resulting command can now be used in python or at the command line without needing to be changed at all. The command is :

ffmpeg -y -loglevel verbose -i /var/www/temp/film.mp4 -vf "scale=1920:1080:force_original_aspect_ratio=decrease,pad=1920:1080:x=(1920-iw)/2:y=(1080-ih)/2:color=black" /var/www/temp/videoHD.mp4

The result when executed in python is

ffmpeg version 3.3.4-2~16.04.york0 Copyright (c) 2000-2017 the FFmpeg developers

  built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.4) 20160609

  configuration: --prefix=/usr --extra-version='2~16.04.york0' --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-stripping --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmp3lame --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 --enable-shared

  libavutil      55. 58.100 / 55. 58.100

  libavcodec     57. 89.100 / 57. 89.100

  libavformat    57. 71.100 / 57. 71.100

  libavdevice    57.  6.100 / 57.  6.100

  libavfilter     6. 82.100 /  6. 82.100

  libavresample   3.  5.  0 /  3.  5.  0

  libswscale      4.  6.100 /  4.  6.100

  libswresample   2.  7.100 /  2.  7.100

  libpostproc    54.  5.100 / 54.  5.100

[h264 @ 0x7fb75053d560] Reinit context to 640x368, pix_fmt: yuv420p

Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/var/www/temp/film.mp4':

  Metadata:

    major_brand     : isom

    minor_version   : 512

    compatible_brands: isomiso2avc1mp41

    encoder         : Lavf57.71.100

  Duration: 00:06:19.80, start: 0.000000, bitrate: 451 kb/s

    Stream #0:0(und): Video: h264 (High), 1 reference frame (avc1 / 0x31637661), yuv420p(left), 640x358 (640x368), 313 kb/s, 30 fps, 30 tbr, 15360 tbn, 60 tbc (default)

    Metadata:

      handler_name    : VideoHandler

    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 128 kb/s (default)

    Metadata:

      handler_name    : SoundHandler

Stream mapping:

  Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))

  Stream #0:1 -> #0:1 (aac (native) -> aac (native))

Press [q] to stop, [?] for help

[h264 @ 0x7fb75057f700] Reinit context to 640x368, pix_fmt: yuv420p

[graph_1_in_0_1 @ 0x7fb7506f45e0] tb:1/48000 samplefmt:fltp samplerate:48000 chlayout:0x3

[Parsed_scale_0 @ 0x7fb750711000] w:1920 h:1080 flags:'bicubic' interl:0

[graph 0 input from stream 0:0 @ 0x7fb7507126a0] w:640 h:358 pixfmt:yuv420p tb:1/15360 fr:30/1 sar:0/1 sws_param:flags=2

[Parsed_scale_0 @ 0x7fb750711000] w:640 h:358 fmt:yuv420p sar:0/1 -> w:1920 h:1074 fmt:yuv420p sar:0/1 flags:0x4

[Parsed_pad_1 @ 0x7fb750711ac0] w:1920 h:1074 -> w:1920 h:1080 x:0 y:2 color:0x000000FF

[libx264 @ 0x7fb7507139e0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2

[libx264 @ 0x7fb7507139e0] profile High, level 4.0

[libx264 @ 0x7fb7507139e0] 264 - core 148 r2795 aaa9aa8 - H.264/MPEG-4 AVC codec - Copyleft 2003-2017 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00

Output #0, mp4, to '/var/www/temp/videoHD.mp4':

  Metadata:

    major_brand     : isom

    minor_version   : 512

    compatible_brands: isomiso2avc1mp41

    encoder         : Lavf57.71.100

    Stream #0:0(und): Video: h264 (libx264), 1 reference frame ([33][0][0][0] / 0x0021), yuv420p(left), 1920x1080, q=-1--1, 30 fps, 15360 tbn, 30 tbc (default)

    Metadata:

      handler_name    : VideoHandler

      encoder         : Lavc57.89.100 libx264

    Side data:

      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1

    Stream #0:1(und): Audio: aac (LC) ([64][0][0][0] / 0x0040), 48000 Hz, stereo, fltp, delay 1024, 128 kb/s (default)

    Metadata:

      handler_name    : SoundHandler

      encoder         : Lavc57.89.100 aac

Killed

Note the Killed at the end. Is this significant and why is it only happening when executed in the script ?

Here is the output from the command line which results in a successful video file.

ffmpeg version 3.3.4-2~16.04.york0 Copyright (c) 2000-2017 the FFmpeg developers

  built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.4) 20160609

  configuration: --prefix=/usr --extra-version='2~16.04.york0' --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-stripping --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmp3lame --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 --enable-shared

  libavutil      55. 58.100 / 55. 58.100

  libavcodec     57. 89.100 / 57. 89.100

  libavformat    57. 71.100 / 57. 71.100

  libavdevice    57.  6.100 / 57.  6.100

  libavfilter     6. 82.100 /  6. 82.100

  libavresample   3.  5.  0 /  3.  5.  0

  libswscale      4.  6.100 /  4.  6.100

  libswresample   2.  7.100 /  2.  7.100

  libpostproc    54.  5.100 / 54.  5.100

[h264 @ 0x7fb52cfb3560] Reinit context to 640x368, pix_fmt: yuv420p

Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/var/www/temp/film.mp4':

  Metadata:

    major_brand     : isom

    minor_version   : 512

    compatible_brands: isomiso2avc1mp41

    encoder         : Lavf57.71.100

  Duration: 00:06:19.80, start: 0.000000, bitrate: 451 kb/s

    Stream #0:0(und): Video: h264 (High), 1 reference frame (avc1 / 0x31637661), yuv420p(left), 640x358 (640x368), 313 kb/s, 30 fps, 30 tbr, 15360 tbn, 60 tbc (default)

    Metadata:

      handler_name    : VideoHandler

    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 128 kb/s (default)

    Metadata:

      handler_name    : SoundHandler

Stream mapping:

  Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))

  Stream #0:1 -> #0:1 (aac (native) -> aac (native))

Press [q] to stop, [?] for help

[h264 @ 0x7fb52cff5700] Reinit context to 640x368, pix_fmt: yuv420p

[graph_1_in_0_1 @ 0x7fb52d16a5e0] tb:1/48000 samplefmt:fltp samplerate:48000 chlayout:0x3

[Parsed_scale_0 @ 0x7fb52d187000] w:1920 h:1080 flags:'bicubic' interl:0

[graph 0 input from stream 0:0 @ 0x7fb52d1886a0] w:640 h:358 pixfmt:yuv420p tb:1/15360 fr:30/1 sar:0/1 sws_param:flags=2

[Parsed_scale_0 @ 0x7fb52d187000] w:640 h:358 fmt:yuv420p sar:0/1 -> w:1920 h:1074 fmt:yuv420p sar:0/1 flags:0x4

[Parsed_pad_1 @ 0x7fb52d187ac0] w:1920 h:1074 -> w:1920 h:1080 x:0 y:2 color:0x000000FF

[libx264 @ 0x7fb52d1899e0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2

[libx264 @ 0x7fb52d1899e0] profile High, level 4.0

[libx264 @ 0x7fb52d1899e0] 264 - core 148 r2795 aaa9aa8 - H.264/MPEG-4 AVC codec - Copyleft 2003-2017 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00

Output #0, mp4, to '/var/www/temp/videoHD.mp4':

  Metadata:

    major_brand     : isom

    minor_version   : 512

    compatible_brands: isomiso2avc1mp41

    encoder         : Lavf57.71.100

    Stream #0:0(und): Video: h264 (libx264), 1 reference frame ([33][0][0][0] / 0x0021), yuv420p(left), 1920x1080, q=-1--1, 30 fps, 15360 tbn, 30 tbc (default)

    Metadata:

      handler_name    : VideoHandler

      encoder         : Lavc57.89.100 libx264

    Side data:

      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1

    Stream #0:1(und): Audio: aac (LC) ([64][0][0][0] / 0x0040), 48000 Hz, stereo, fltp, delay 1024, 128 kb/s (default)

    Metadata:

      handler_name    : SoundHandler

      encoder         : Lavc57.89.100 aac

frame=   47 fps=0.0 q=0.0 size=       0kB time=00:00:01.66 bitrate=   0.0kbits/s

frame=   59 fps= 41 q=29.0 size=     116kB time=00:00:02.04 bitrate= 464.8kbits/

frame=   71 fps= 35 q=29.0 size=     201kB time=00:00:02.45 bitrate= 671.3kbits/

frame=   80 fps= 31 q=29.0 size=     276kB time=00:00:02.75 bitrate= 822.0kbits/

    Blah

    Blah

    Blah

frame=11337 fps= 21 q=29.0 size=   97503kB time=00:06:17.98 bitrate=2113.2kbits/

frame=11351 fps= 21 q=26.0 size=   97572kB time=00:06:18.45 bitrate=2112.1kbits/

frame=11371 fps= 21 q=29.0 size=   97745kB time=00:06:19.11 bitrate=2112.1kbits/

frame=11390 fps= 21 q=29.0 size=   97852kB time=00:06:19.73 bitrate=2111.0kbits/

No more output streams to write to, finishing.

frame=11392 fps= 21 q=-1.0 Lsize=   98519kB time=00:06:19.77 bitrate=2125.1kbits/s speed=0.688x    

video:92124kB audio:5986kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.416313%

Input file #0 (/var/www/temp/film.mp4):

  Input stream #0:0 (video): 11392 packets read (14892948 bytes); 11392 frames decoded; 

  Input stream #0:1 (audio): 17803 packets read (6112540 bytes); 17802 frames decoded (18229248 samples); 

  Total: 29195 packets (21005488 bytes) demuxed

Output file #0 (/var/www/temp/videoHD.mp4):

  Output stream #0:0 (video): 11392 frames encoded; 11392 packets muxed (94334785 bytes); 

  Output stream #0:1 (audio): 17802 frames encoded (18229248 samples); 17803 packets muxed (6129981 bytes); 

  Total: 29195 packets (100464766 bytes) muxed

[libx264 @ 0x7fb52d1899e0] frame I:74    Avg QP:19.08  size: 51540

[libx264 @ 0x7fb52d1899e0] frame P:3506  Avg QP:21.34  size: 19348

[libx264 @ 0x7fb52d1899e0] frame B:7812  Avg QP:24.07  size:  2904

[libx264 @ 0x7fb52d1899e0] consecutive B-frames:  1.3% 20.2%  4.6% 73.9%

[libx264 @ 0x7fb52d1899e0] mb I  I16..4: 19.7% 73.6%  6.7%

[libx264 @ 0x7fb52d1899e0] mb P  I16..4:  3.2%  6.4%  0.1%  P16..4: 52.5%  7.6%  2.6%  0.0%  0.0%    skip:27.6%

[libx264 @ 0x7fb52d1899e0] mb B  I16..4:  0.2%  0.2%  0.0%  B16..8: 23.2%  0.4%  0.0%  direct: 0.5%  skip:75.5%  L0:51.8% L1:46.6% BI: 1.6%

[libx264 @ 0x7fb52d1899e0] 8x8 transform intra:66.4% inter:94.0%

[libx264 @ 0x7fb52d1899e0] coded y,uvDC,uvAC intra: 33.6% 53.4% 7.3% inter: 5.3% 14.2% 0.0%

[libx264 @ 0x7fb52d1899e0] i16 v,h,dc,p: 22% 27%  5% 46%

[libx264 @ 0x7fb52d1899e0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 29% 19% 20%  4%  7%  7%  7%  5%  4%

[libx264 @ 0x7fb52d1899e0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 31% 28% 11%  3%  9%  7%  6%  3%  2%

[libx264 @ 0x7fb52d1899e0] i8c dc,h,v,p: 49% 21% 20% 10%

[libx264 @ 0x7fb52d1899e0] Weighted P-Frames: Y:0.5% UV:0.1%

[libx264 @ 0x7fb52d1899e0] ref P L0: 63.4%  8.9% 21.4%  6.3%  0.0%

[libx264 @ 0x7fb52d1899e0] ref B L0: 89.3%  9.1%  1.6%

[libx264 @ 0x7fb52d1899e0] ref B L1: 98.1%  1.9%

[libx264 @ 0x7fb52d1899e0] kb/s:1987.38

[aac @ 0x7fb52d18ae80] Qavg: 1160.814

Any more ideas why this is being handled differently in python as opposed to the command line ?

I’m believe this is a version issue and that is why the below answer did not work for me, things were fine before I upgraded but since then a lot of things have been playing up. I upgraded both ffmpeg and python versions and don’t really want to go back if it can be avoided.

Thanks,

Stu

FFMPEG - Green cast with Splash image in video

30 mai 2020, par rossmcm

I'm using FFMPEG to produce a video consisting of a single monchrome JPG image :

ffmpeg -y -loop 1 -framerate 30 -t 5 -i SplashBW.jpg Splash.mp4&#xA;

There are two issues with the resulting video :

When viewed with VLC it has a green cast

When viewed with "Film and TV" (I suspect this is the Windows 10
viewer - the association for MP4 files seems to have been hijacked
on my PC) it has a green cast and a predominant flickering every
0.5 seconds or so.

When viewed with Irfan View it looks fine. I don't know whether the issue is with the original JPG, the FFMPEG command, or the viewers. Naturally, I want it to render properly on all outputs.

The first two links below look fine in my browser (Chrome) when I open them. The third link is a screen recording of what I see when I try to play the video with the Film and TVapp.

B&W image

Resulting video

screen grab of video playing on my PC

A log of the FFMPEG run :

C:\Users\Raymond\Desktop\Chorus\Videos\Virtual Choir>call ffmpeg -y -loglevel verbose -loop 1 -framerate 30 -t 5 -i SplashBW.jpg Splash.mp4&#xA;ffmpeg version 4.2.2 Copyright (c) 2000-2019 the FFmpeg developers&#xA;  built with gcc 9.2.1 (GCC) 20200122&#xA;  configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libdav1d --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libope&#xA;ncore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --&#xA;enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-libmfx --enable-amf --enable-ffnvcodec --enable-cuv&#xA;id --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt&#xA;  libavutil      56. 31.100 / 56. 31.100&#xA;  libavcodec     58. 54.100 / 58. 54.100&#xA;  libavformat    58. 29.100 / 58. 29.100&#xA;  libavdevice    58.  8.100 / 58.  8.100&#xA;  libavfilter     7. 57.100 /  7. 57.100&#xA;  libswscale      5.  5.100 /  5.  5.100&#xA;  libswresample   3.  5.100 /  3.  5.100&#xA;  libpostproc    55.  5.100 / 55.  5.100&#xA;[AVIOContext @ 000001e6f6ccdd00] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6ccde80] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6d59b00] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6ccde40] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6ccdf00] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6ccdfc0] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cce180] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cce240] Statistics: 159785 bytes read, 0 seeks&#xA;    Last message repeated 1 times&#xA;[AVIOContext @ 000001e6f6cd33c0] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd3480] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd3640] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd3700] Statistics: 159785 bytes read, 0 seeks&#xA;    Last message repeated 19 times&#xA;Input #0, image2, from &#x27;SplashBW.jpg&#x27;:&#xA;  Duration: 00:00:00.03, start: 0.000000, bitrate: 38348 kb/s&#xA;    Stream #0:0: Video: mjpeg (Baseline), 1 reference frame, gray(bt470bg/unknown/unknown, center), 1920x1080 [SAR 1:1 DAR 16:9], 30 fps, 30 tbr, 30 tbn, 30 tbc&#xA;Stream mapping:&#xA;  Stream #0:0 -> #0:0 (mjpeg (native) -> h264 (libx264))&#xA;Press [q] to stop, [?] for help&#xA;[graph 0 input from stream 0:0 @ 000001e6f6cd2ec0] w:1920 h:1080 pixfmt:gray tb:1/30 fr:30/1 sar:1/1 sws_param:flags=2&#xA;[libx264 @ 000001e6f6d57100] using SAR=1/1&#xA;[libx264 @ 000001e6f6d57100] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2&#xA;[libx264 @ 000001e6f6d57100] profile High, level 4.0, 4:0:0, 8-bit&#xA;[libx264 @ 000001e6f6d57100] 264 - core 159 - H.264/MPEG-4 AVC codec - Copyleft 2003-2019 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chro&#xA;ma_me=0 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=12 lookahead_threads=2 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weigh&#xA;tb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00&#xA;Output #0, mp4, to &#x27;Splash.mp4&#x27;:&#xA;  Metadata:&#xA;    encoder         : Lavf58.29.100&#xA;    Stream #0:0: Video: h264 (libx264), 1 reference frame (avc1 / 0x31637661), gray(center), 1920x1080 [SAR 1:1 DAR 16:9], q=-1--1, 30 fps, 15360 tbn, 30 tbc&#xA;    Metadata:&#xA;      encoder         : Lavc58.54.100 libx264&#xA;    Side data:&#xA;      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1&#xA;[AVIOContext @ 000001e6f8b98e00] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd5300] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd51c0] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd5c40] Statistics: 159785 bytes read, 0 seeks&#xA;    Last message repeated 1 times&#xA;[AVIOContext @ 000001e6f6cd5300] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd5440] Statistics: 159785 bytes read, 0 seeks&#xA;    Last message repeated 1 times&#xA;[AVIOContext @ 000001e6f6cd5040] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd5980] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd5040] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd5840] Statistics: 159785 bytes read, 0 seeksspeed=   0x&#xA;[AVIOContext @ 000001e6f6cd5580] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd51c0] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd5300] Statistics: 159785 bytes read, 0 seeks&#xA;    Last message repeated 1 times&#xA;[AVIOContext @ 000001e6f6cd5ac0] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd5440] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd5c40] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd5440] Statistics: 159785 bytes read, 0 seeks&#xA;    Last message repeated 1 times&#xA;[AVIOContext @ 000001e6f6cd5300] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd5700] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd4f00] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd5700] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd5c40] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd5300] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd5700] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd5300] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd5ac0] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd5840] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd4f00] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd5040] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd5700] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd5ac0] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd51c0] Statistics: 159785 bytes read, 0 seeks&#xA;    Last message repeated 1 times&#xA;[AVIOContext @ 000001e6f6cd5c40] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd5040] Statistics: 159785 bytes read, 0 seeks1.0kbits/s speed=0.359x&#xA;    Last message repeated 1 times&#xA;[AVIOContext @ 000001e6f6cd5840] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd5ac0] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd51c0] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd5580] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd5440] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd5700] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd5c40] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd5300] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd51c0] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd4f00] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd51c0] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd5700] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd5ac0] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd5700] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd5ac0] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd51c0] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd5ac0] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd5c40] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd5840] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd5580] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd51c0] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd5300] Statistics: 159785 bytes read, 0 seeks&#xA;    Last message repeated 1 times&#xA;[AVIOContext @ 000001e6f6cd51c0] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd4f00] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd5040] Statistics: 159785 bytes read, 0 seeks0.3kbits/s speed=0.828x&#xA;[AVIOContext @ 000001e6f6cd5ac0] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd5040] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd5580] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd51c0] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd4f00] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd51c0] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd5ac0] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd5840] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd5580] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd51c0] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd5840] Statistics: 159785 bytes read, 0 seeks&#xA;    Last message repeated 1 times&#xA;[AVIOContext @ 000001e6f6cd5700] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd5ac0] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd5840] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd5040] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd4f00] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd51c0] Statistics: 159785 bytes read, 0 seeks&#xA;    Last message repeated 1 times&#xA;[AVIOContext @ 000001e6f6cd5300] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd5ac0] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd5700] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd51c0] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd5840] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd4f00] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd5300] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd5c40] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd5700] Statistics: 159785 bytes read, 0 seeks&#xA;    Last message repeated 1 times&#xA;[AVIOContext @ 000001e6f6cd5580] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd5840] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd5700] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd5440] Statistics: 159785 bytes read, 0 seeks0.2kbits/s speed=1.16x&#xA;[AVIOContext @ 000001e6f6cd5ac0] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd5040] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd4f00] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd5040] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd5ac0] Statistics: 159785 bytes read, 0 seeks&#xA;    Last message repeated 2 times&#xA;[AVIOContext @ 000001e6f6cd5440] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd5040] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd5300] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd5040] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd5440] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd5700] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd5980] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd5c40] Statistics: 159785 bytes read, 0 seeks&#xA;    Last message repeated 1 times&#xA;[AVIOContext @ 000001e6f6cd5040] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd4f00] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd5c40] Statistics: 159785 bytes read, 0 seeks&#xA;[AVIOContext @ 000001e6f6cd5ac0] Statistics: 159785 bytes read, 0 seeks&#xA;No more output streams to write to, finishing.&#xA;frame=  150 fps= 51 q=-1.0 Lsize=     142kB time=00:00:04.90 bitrate= 237.8kbits/s speed=1.65x&#xA;video:140kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 1.855892%&#xA;Input file #0 (SplashBW.jpg):&#xA;  Input stream #0:0 (video): 151 packets read (24127535 bytes); 151 frames decoded;&#xA;  Total: 151 packets (24127535 bytes) demuxed&#xA;Output file #0 (Splash.mp4):&#xA;  Output stream #0:0 (video): 150 frames encoded; 150 packets muxed (143004 bytes);&#xA;  Total: 150 packets (143004 bytes) muxed&#xA;[AVIOContext @ 000001e6f6d59240] Statistics: 2 seeks, 4 writeouts&#xA;[libx264 @ 000001e6f6d57100] frame I:1     Avg QP:18.13  size:131209&#xA;[libx264 @ 000001e6f6d57100] frame P:38    Avg QP:16.03  size:    87&#xA;[libx264 @ 000001e6f6d57100] frame B:111   Avg QP:24.33  size:    70&#xA;[libx264 @ 000001e6f6d57100] consecutive B-frames:  1.3%  0.0%  0.0% 98.7%&#xA;[libx264 @ 000001e6f6d57100] mb I  I16..4:  1.8% 96.0%  2.2%&#xA;[libx264 @ 000001e6f6d57100] mb P  I16..4:  0.0%  0.0%  0.0%  P16..4:  0.0%  0.0%  0.0%  0.0%  0.0%    skip:99.9%&#xA;[libx264 @ 000001e6f6d57100] mb B  I16..4:  0.0%  0.0%  0.0%  B16..8:  0.0%  0.0%  0.0%  direct: 0.0%  skip:100.0%  L0:21.7% L1:78.3% BI: 0.0%&#xA;[libx264 @ 000001e6f6d57100] 8x8 transform intra:96.0% inter:98.7%&#xA;[libx264 @ 000001e6f6d57100] coded y intra: 94.7% inter: 0.0%&#xA;[libx264 @ 000001e6f6d57100] i16 v,h,dc,p: 24% 37%  5% 34%&#xA;[libx264 @ 000001e6f6d57100] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 46% 22% 11%  3%  3%  3%  4%  3%  5%&#xA;[libx264 @ 000001e6f6d57100] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 79%  9%  2%  1%  2%  1%  4%  1%  1%&#xA;[libx264 @ 000001e6f6d57100] i8c dc,h,v,p: 100%  0%  0%  0%&#xA;[libx264 @ 000001e6f6d57100] Weighted P-Frames: Y:0.0%&#xA;[libx264 @ 000001e6f6d57100] ref P L0: 96.6%  0.7%  1.3%  1.3%&#xA;[libx264 @ 000001e6f6d57100] ref B L0: 96.9%  2.1%  1.0%&#xA;[libx264 @ 000001e6f6d57100] ref B L1: 94.8%  5.2%&#xA;[libx264 @ 000001e6f6d57100] kb/s:227.72&#xA;[AVIOContext @ 000001e6f6ccb880] Statistics: 32768 bytes read, 0 seeks&#xA;

Java.lang.UnsatisfiedLinkError : No implementation found for int [duplicate]

28 mars 2017, par Muthukumar Subramaniam

This question already has an answer here :

Android NDK C++ JNI (no implementation found for native…)

6 answers

I executed youtube watch me android application project. I just add some classes in my project and build with ndk. I got the error like

java.lang.UnsatisfiedLinkError : No implementation found for int com.ephronsystem.mobilizerapp.Ffmpeg.encodeVideoFrame(byte[]) (tried Java_com_ephronsystem_mobilizerapp_Ffmpeg_encodeVideoFrame and Java_com_ephronsystem_mobilizerapp_Ffmpeg_encodeVideoFrame___3B).

My code :

package com.ephronsystem.mobilizerapp;



public class Ffmpeg {



     static {

        System.loadLibrary("ffmpeg");

    }



    public static native boolean init(int width, int height, int audio_sample_rate, String rtmpUrl);



    public static native void shutdown();



    // Returns the size of the encoded frame.

    public static native int encodeVideoFrame(byte[] yuv_image);



    public static native int encodeAudioFrame(short[] audio_data, int length);

}

This is ffmpeg-jni.c

 #include <android></android>log.h>

#include 

#include 

#include "libavcodec/avcodec.h"

#include "libavformat/avformat.h"

#include "libavutil/opt.h"



#ifdef __cplusplus

extern "C" {

#endif



JNIEXPORT jboolean JNICALL Java_com_ephronsystem_mobilizerapp_Ffmpeg_init(JNIEnv *env, jobject thiz,

                                                                 jint width, jint height,

                                                                 jint audio_sample_rate,

                                                                 jstring rtmp_url);

JNIEXPORT void JNICALL Java_com_ephronsystem_mobilizerapp_Ffmpeg_shutdown(JNIEnv *env,

jobject thiz

);

JNIEXPORT jint JNICALL Java_com_ephronsystem_mobilizerapp_Ffmpeg_encodeVideoFrame(JNIEnv

*env,

jobject thiz,

        jbyteArray

yuv_image);

JNIEXPORT jint JNICALL Java_com_ephronsystem_mobilizerapp_Ffmpeg_encodeAudioFrame(JNIEnv *env,

                                                                             jobject thiz,

                                                                             jshortArray audio_data,

                                                                             jint length);



#ifdef __cplusplus

}

#endif



#define LOGI(...) __android_log_print(ANDROID_LOG_INFO, "ffmpeg-jni", __VA_ARGS__)

#define URL_WRONLY 2

        static AVFormatContext *fmt_context;

        static AVStream *video_stream;

        static AVStream *audio_stream;



        static int pts

= 0;

static int last_audio_pts = 0;



// Buffers for UV format conversion

static unsigned char *u_buf;

static unsigned char *v_buf;



static int enable_audio = 1;

static int64_t audio_samples_written = 0;

static int audio_sample_rate = 0;



// Stupid buffer for audio samples. Not even a proper ring buffer

#define AUDIO_MAX_BUF_SIZE 16384  // 2x what we get from Java

static short audio_buf[AUDIO_MAX_BUF_SIZE];

static int audio_buf_size = 0;



void AudioBuffer_Push(const short *audio, int num_samples) {

    if (audio_buf_size >= AUDIO_MAX_BUF_SIZE - num_samples) {

        LOGI("AUDIO BUFFER OVERFLOW: %i + %i > %i", audio_buf_size, num_samples,

             AUDIO_MAX_BUF_SIZE);

        return;

    }

    for (int i = 0; i &lt; num_samples; i++) {

        audio_buf[audio_buf_size++] = audio[i];

    }

}



int AudioBuffer_Size() { return audio_buf_size; }



short *AudioBuffer_Get() { return audio_buf; }



void AudioBuffer_Pop(int num_samples) {

    if (num_samples > audio_buf_size) {

        LOGI("Audio buffer Pop WTF: %i vs %i", num_samples, audio_buf_size);

        return;

    }

    memmove(audio_buf, audio_buf + num_samples, num_samples * sizeof(short));

    audio_buf_size -= num_samples;

}



void AudioBuffer_Clear() {

    memset(audio_buf, 0, sizeof(audio_buf));

    audio_buf_size = 0;

}



static void log_callback(void *ptr, int level, const char *fmt, va_list vl) {

    char x[2048];

    vsnprintf(x, 2048, fmt, vl);

    LOGI(x);

}



JNIEXPORT jboolean JNICALL Java_com_ephronsystem_mobilizerapp_Ffmpeg_init(JNIEnv *env, jobject thiz,

                                                                 jint width, jint height,

                                                                 jint audio_sample_rate_param,

                                                                 jstring rtmp_url) {

    avcodec_register_all();

    av_register_all();

    av_log_set_callback(log_callback);



    fmt_context = avformat_alloc_context();

    AVOutputFormat *ofmt = av_guess_format("flv", NULL, NULL);

    if (ofmt) {

        LOGI("av_guess_format returned %s", ofmt->long_name);

    } else {

        LOGI("av_guess_format fail");

        return JNI_FALSE;

    }



    fmt_context->oformat = ofmt;

    LOGI("creating video stream");

    video_stream = av_new_stream(fmt_context, 0);



    if (enable_audio) {

        LOGI("creating audio stream");

        audio_stream = av_new_stream(fmt_context, 1);

    }



    // Open Video Codec.

    // ======================

    AVCodec *video_codec = avcodec_find_encoder(AV_CODEC_ID_H264);

    if (!video_codec) {

        LOGI("Did not find the video codec");

        return JNI_FALSE;  // leak!

    } else {

        LOGI("Video codec found!");

    }

    AVCodecContext *video_codec_ctx = video_stream->codec;

    video_codec_ctx->codec_id = video_codec->id;

    video_codec_ctx->codec_type = AVMEDIA_TYPE_VIDEO;

    video_codec_ctx->level = 31;



    video_codec_ctx->width = width;

    video_codec_ctx->height = height;

    video_codec_ctx->pix_fmt = PIX_FMT_YUV420P;

    video_codec_ctx->rc_max_rate = 0;

    video_codec_ctx->rc_buffer_size = 0;

    video_codec_ctx->gop_size = 12;

    video_codec_ctx->max_b_frames = 0;

    video_codec_ctx->slices = 8;

    video_codec_ctx->b_frame_strategy = 1;

    video_codec_ctx->coder_type = 0;

    video_codec_ctx->me_cmp = 1;

    video_codec_ctx->me_range = 16;

    video_codec_ctx->qmin = 10;

    video_codec_ctx->qmax = 51;

    video_codec_ctx->keyint_min = 25;

    video_codec_ctx->refs = 3;

    video_codec_ctx->trellis = 0;

    video_codec_ctx->scenechange_threshold = 40;

    video_codec_ctx->flags |= CODEC_FLAG_LOOP_FILTER;

    video_codec_ctx->me_method = ME_HEX;

    video_codec_ctx->me_subpel_quality = 6;

    video_codec_ctx->i_quant_factor = 0.71;

    video_codec_ctx->qcompress = 0.6;

    video_codec_ctx->max_qdiff = 4;

    video_codec_ctx->time_base.den = 10;

    video_codec_ctx->time_base.num = 1;

    video_codec_ctx->bit_rate = 3200 * 1000;

    video_codec_ctx->bit_rate_tolerance = 0;

    video_codec_ctx->flags2 |= 0x00000100;



    fmt_context->bit_rate = 4000 * 1000;



    av_opt_set(video_codec_ctx, "partitions", "i8x8,i4x4,p8x8,b8x8", 0);

    av_opt_set_int(video_codec_ctx, "direct-pred", 1, 0);

    av_opt_set_int(video_codec_ctx, "rc-lookahead", 0, 0);

    av_opt_set_int(video_codec_ctx, "fast-pskip", 1, 0);

    av_opt_set_int(video_codec_ctx, "mixed-refs", 1, 0);

    av_opt_set_int(video_codec_ctx, "8x8dct", 0, 0);

    av_opt_set_int(video_codec_ctx, "weightb", 0, 0);



    if (fmt_context->oformat->flags &amp; AVFMT_GLOBALHEADER)

        video_codec_ctx->flags |= CODEC_FLAG_GLOBAL_HEADER;



    LOGI("Opening video codec");

    AVDictionary *vopts = NULL;

    av_dict_set(&amp;vopts, "profile", "main", 0);

    //av_dict_set(&amp;vopts, "vprofile", "main", 0);

    av_dict_set(&amp;vopts, "rc-lookahead", 0, 0);

    av_dict_set(&amp;vopts, "tune", "film", 0);

    av_dict_set(&amp;vopts, "preset", "ultrafast", 0);

    av_opt_set(video_codec_ctx->priv_data, "tune", "film", 0);

    av_opt_set(video_codec_ctx->priv_data, "preset", "ultrafast", 0);

    av_opt_set(video_codec_ctx->priv_data, "tune", "film", 0);

    int open_res = avcodec_open2(video_codec_ctx, video_codec, &amp;vopts);

    if (open_res &lt; 0) {

        LOGI("Error opening video codec: %i", open_res);

        return JNI_FALSE;   // leak!

    }



    // Open Audio Codec.

    // ======================



    if (enable_audio) {

        AudioBuffer_Clear();

        audio_sample_rate = audio_sample_rate_param;

        AVCodec *audio_codec = avcodec_find_encoder(AV_CODEC_ID_AAC);

        if (!audio_codec) {

            LOGI("Did not find the audio codec");

            return JNI_FALSE;  // leak!

        } else {

            LOGI("Audio codec found!");

        }

        AVCodecContext *audio_codec_ctx = audio_stream->codec;

        audio_codec_ctx->codec_id = audio_codec->id;

        audio_codec_ctx->codec_type = AVMEDIA_TYPE_AUDIO;

        audio_codec_ctx->bit_rate = 128000;

        audio_codec_ctx->bit_rate_tolerance = 16000;

        audio_codec_ctx->channels = 1;

        audio_codec_ctx->profile = FF_PROFILE_AAC_LOW;

        audio_codec_ctx->sample_fmt = AV_SAMPLE_FMT_FLT;

        audio_codec_ctx->sample_rate = 44100;



        LOGI("Opening audio codec");

        AVDictionary *opts = NULL;

        av_dict_set(&amp;opts, "strict", "experimental", 0);

        open_res = avcodec_open2(audio_codec_ctx, audio_codec, &amp;opts);

        LOGI("audio frame size: %i", audio_codec_ctx->frame_size);



        if (open_res &lt; 0) {

            LOGI("Error opening audio codec: %i", open_res);

            return JNI_FALSE;   // leak!

        }

    }



    const jbyte *url = (*env)->GetStringUTFChars(env, rtmp_url, NULL);



    // Point to an output file

    if (!(ofmt->flags &amp; AVFMT_NOFILE)) {

        if (avio_open(&amp;fmt_context->pb, url, URL_WRONLY) &lt; 0) {

            LOGI("ERROR: Could not open file %s", url);

            return JNI_FALSE;  // leak!

        }

    }

    (*env)->ReleaseStringUTFChars(env, rtmp_url, url);



    LOGI("Writing output header.");

    // Write file header

    if (avformat_write_header(fmt_context, NULL) != 0) {

        LOGI("ERROR: av_write_header failed");

        return JNI_FALSE;

    }



    pts = 0;

    last_audio_pts = 0;

    audio_samples_written = 0;



    // Initialize buffers for UV format conversion

    int frame_size = video_codec_ctx->width * video_codec_ctx->height;

    u_buf = (unsigned char *) av_malloc(frame_size / 4);

    v_buf = (unsigned char *) av_malloc(frame_size / 4);



    LOGI("ffmpeg encoding init done");

    return JNI_TRUE;

}



JNIEXPORT void JNICALL Java_com_ephronsystem_mobilizerapp_Ffmpeg_shutdown(JNIEnv

*env,

jobject thiz

) {

av_write_trailer(fmt_context);

avio_close(fmt_context

->pb);

avcodec_close(video_stream

->codec);

if (enable_audio) {

avcodec_close(audio_stream

->codec);

}

av_free(fmt_context);

av_free(u_buf);

av_free(v_buf);



fmt_context = NULL;

u_buf = NULL;

v_buf = NULL;

}



JNIEXPORT jint JNICALL Java_com_ephronsystem_mobilizerapp_Ffmpeg_encodeVideoFrame(JNIEnv

*env,

jobject thiz,

        jbyteArray

yuv_image) {

int yuv_length = (*env)->GetArrayLength(env, yuv_image);

unsigned char *yuv_data = (*env)->GetByteArrayElements(env, yuv_image, 0);



AVCodecContext *video_codec_ctx = video_stream->codec;

//LOGI("Yuv size: %i w: %i h: %i", yuv_length, video_codec_ctx->width, video_codec_ctx->height);



int frame_size = video_codec_ctx->width * video_codec_ctx->height;



const unsigned char *uv = yuv_data + frame_size;



// Convert YUV from NV12 to I420. Y channel is the same so we don't touch it,

// we just have to deinterleave UV.

for (

int i = 0;

i &lt; frame_size / 4; i++) {

v_buf[i] = uv[i * 2];

u_buf[i] = uv[i * 2 + 1];

}



AVFrame source;

memset(&amp;source, 0, sizeof(AVFrame));

source.data[0] =

yuv_data;

source.data[1] =

u_buf;

source.data[2] =

v_buf;

source.linesize[0] = video_codec_ctx->

width;

source.linesize[1] = video_codec_ctx->width / 2;

source.linesize[2] = video_codec_ctx->width / 2;



// only for bitrate regulation. irrelevant for sync.

source.

pts = pts;

pts++;



int out_length = frame_size + (frame_size / 2);

unsigned char *out = (unsigned char *) av_malloc(out_length);

int compressed_length = avcodec_encode_video(video_codec_ctx, out, out_length, &amp;source);



(*env)->

ReleaseByteArrayElements(env, yuv_image, yuv_data,

0);



// Write to file too

if (compressed_length > 0) {

AVPacket pkt;

av_init_packet(&amp;pkt);

pkt.

pts = last_audio_pts;

if (video_codec_ctx->coded_frame &amp;&amp; video_codec_ctx->coded_frame->key_frame) {

pkt.flags |= 0x0001;

}

pkt.

stream_index = video_stream->index;

pkt.

data = out;

pkt.

size = compressed_length;

if (

av_interleaved_write_frame(fmt_context,

&amp;pkt) != 0) {

LOGI("Error writing video frame");

}

} else {

LOGI("??? compressed_length &lt;= 0");

}



last_audio_pts++;



av_free(out);

return

compressed_length;

}



JNIEXPORT jint JNICALL Java_com_ephronsystem_mobilizerapp_Ffmpeg_encodeAudioFrame(JNIEnv

*env,

jobject thiz,

        jshortArray

audio_data,

jint length

) {

if (!enable_audio) {

return 0;

}



short *audio = (*env)->GetShortArrayElements(env, audio_data, 0);

//LOGI("java audio buffer size: %i", length);



AVCodecContext *audio_codec_ctx = audio_stream->codec;



unsigned char *out = av_malloc(128000);



AudioBuffer_Push(audio, length

);



int total_compressed = 0;

while (



AudioBuffer_Size()



>= audio_codec_ctx->frame_size) {

AVPacket pkt;

av_init_packet(&amp;pkt);



int compressed_length = avcodec_encode_audio(audio_codec_ctx, out, 128000,

                                             AudioBuffer_Get());



total_compressed +=

compressed_length;

audio_samples_written += audio_codec_ctx->

frame_size;



int new_pts = (audio_samples_written * 1000) / audio_sample_rate;

if (compressed_length > 0) {

pkt.

size = compressed_length;

pkt.

pts = new_pts;

last_audio_pts = new_pts;

//LOGI("audio_samples_written: %i  comp_length: %i   pts: %i", (int)audio_samples_written, (int)compressed_length, (int)new_pts);

pkt.flags |= 0x0001;

pkt.

stream_index = audio_stream->index;

pkt.

data = out;

if (

av_interleaved_write_frame(fmt_context,

&amp;pkt) != 0) {

LOGI("Error writing audio frame");

}

}

AudioBuffer_Pop(audio_codec_ctx

->frame_size);

}



(*env)->

ReleaseShortArrayElements(env, audio_data, audio,

0);



av_free(out);

return

total_compressed;

}

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