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Sur d’autres sites (8481)

  • LibAV - what approach to take for realtime audio and video capture ?

    26 juillet 2012, par pollux

    I'm using libav to encode raw RGB24 frames to h264 and muxing it to flv. This works
    all fine and I've streamed for more then 48 hours w/o any problems ! My next step
    is to add audio to the stream. I'll be capturing live audio and I want to encode it
    in real time using speex, mp3 or nelly moser.

    Background info

    I'm new to digital audio and therefore I might be doing things wrong. But basically my application gets a "float" buffer with interleaved audio. This "audioIn" function gets called by the application framework I'm using. The buffer contains 256 samples per channel,
    and I have 2 channels. Because I might be mixing terminology, this is how I use the
    data :

    // input = array with audio samples
    
// bufferSize = 256
    
// nChannels = 2
    
void audioIn(float * input, int bufferSize, int nChannels) {
    
    // convert from float to S16
    
        short* buf = new signed short[bufferSize * 2];
    
    for(int i = 0; i < bufferSize; ++i) {  // loop over all samples
    
        int dx = i * 2;
    
        buf[dx + 0] = (float)input[dx + 0] * numeric_limits<short>::max();  // convert frame  of the first channel
    
        buf[dx + 1] = (float)input[dx + 1] * numeric_limits<short>::max();  // convert frame  of the second channel
    
    }
    

    
        // add this to the libav wrapper. 
    
    av.addAudioFrame((unsigned char*)buf, bufferSize, nChannels);
    

    
    delete[] buf;
    
}
    
</short></short>

    Now that I have a buffer, where each sample is 16 bits, I pass this short* buffer, to my
    wrapper av.addAudioFrame() function. In this function I create a buffer, before I encode
    the audio. From what I read, the AVCodecContext of the audio encoder sets the frame_size. This frame_size must match the number of samples in the buffer when calling avcodec_encode_audio2(). Why I think this, is because of what is documented here.

    Then, especially the line :
    If it is not set, frame->nb_samples must be equal to avctx->frame_size for all frames except the last.*(Please correct me here if I'm wrong about this).

    After encoding I call av_interleaved_write_frame() to actually write the frame.
    When I use mp3 as codec my application runs for about 1-2 minutes and then my server, which is receiving the video/audio stream (flv, tcp), disconnects with a message "Frame too large: 14485504". This message is generated because the rtmp-server is getting a frame which is way to big. And this is probably due to the fact I'm not interleaving correctly with libav.

    Questions :

    • There quite some bits I'm not sure of, even when going through the source code of libav and therefore I hope if someone has an working example of encoding audio which comes from a buffer which which comes from "outside" libav (i.e. your own application). i.e. how do you create a buffer which is large enough for the encoder ? How do you make the "realtime" streaming work when you need to wait on this buffer to fill up ?

    • As I wrote above I need to keep track of a buffer before I can encode. Does someone else has some code which does this ? I'm using AVAudioFifo now. The functions which encodes the audio and fills/read the buffer is here too : https://gist.github.com/62f717bbaa69ac7196be

    • I compiled with —enable-debug=3 and disable optimizations, but I'm not seeing any
      debug information. How can I make libav more verbose ?

    Thanks !

  • ffmpeg cache whole video stream and save

    19 juillet 2016, par Luiz

    I have a security DVR that can stream a video recording using the RTSP protocol. I can record the playback using ffmpeg and save it to a file, but for a 20 min video, I have to watch the video to save or wait the whole playback time.
    I’m using :

    ffmpeg -i "rtsp://mystream" -r 15 -acodec copy -vcodec copy myvideo.mp4

    to do this

    Is there any way to buffer the whole stream and just save it to a file using ffmpeg, without the need to watch or wait the whole 20 minutes playback ? I don’t need to reencode anything since the stream video format is good enough for me.

    Thanks in advance

  • FFMPEG Video Cropping slower [duplicate]

    23 juin 2016, par syed imty

    This question already has an answer here :

    I am trying to crop rectangular video into a square one using FFMPEG. The video conversion take too much time.

    For a video of 30 secs, it takes around 60-70secs to convert

    FFMPEG Command

    String commandStr =" -i "+videoPath+"  -vcodec libx264 -b:v 880k -vf crop=" + videoSize.height + ":"+ videoSize.height + ":" + cropStart +":0 -preset ultrafast -strict -2 " +compressedVideoPath;

    Progress Log

    D/ViewRootImpl: ViewPostImeInputStage ACTION_DOWN
    
I/System.out: Video converison : /storage/emulated/0/IHH_y/147.mp4 /storage/emulated/0/IHH_y/147upload.mp4  wxh1080:1080:420
    
I/System.out: FFMpeg lib onStart
    
D/FFmpeg: Running publishing updates method
    
I/System.out: FFMpeg lib onProgressWARNING: linker: /data/data/com.x.y/files/ffmpeg has text relocations. This is wasting memory and prevents security hardening. Please fix.
    
I/System.out: FFMpeg lib onProgressffmpeg version n2.4.2 Copyright (c) 2000-2014 the FFmpeg developers
    
I/System.out: FFMpeg lib onProgress  built on Oct  7 2014 15:08:46 with gcc 4.8 (GCC)
    
I/System.out: FFMpeg lib onProgress  configuration: --target-os=linux --cross-prefix=/home/sb/Source-Code/ffmpeg-android/toolchain-android/bin/arm-linux-androideabi- --arch=arm --cpu=cortex-a8 --enable-runtime-cpudetect --sysroot=/home/sb/Source-Code/ffmpeg-android/toolchain-android/sysroot --enable-pic --enable-libx264 --enable-libass --enable-libfreetype --enable-libfribidi --enable-fontconfig --enable-pthreads --disable-debug --disable-ffserver --enable-version3 --enable-hardcoded-tables --disable-ffplay --disable-ffprobe --enable-gpl --enable-yasm --disable-doc --disable-shared --enable-static --pkg-config=/home/sb/Source-Code/ffmpeg-android/ffmpeg-pkg-config --prefix=/home/sb/Source-Code/ffmpeg-android/build/armeabi-v7a-neon --extra-cflags='-I/home/sb/Source-Code/ffmpeg-android/toolchain-android/include -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all -mfpu=neon' --extra-ldflags='-L/home/sb/Source-Code/ffmpeg-android/toolchain-android/lib -Wl,-z,relro -Wl,-z,now -pie' --extra-libs='-lpng -lexpat -lm' --extra-cxxflags=
    
I/System.out: FFMpeg lib onProgress  libavutil      54.  7.100 / 54.  7.100
    
I/System.out: FFMpeg lib onProgress  libavcodec     56.  1.100 / 56.  1.100
    
I/System.out: FFMpeg lib onProgress  libavformat    56.  4.101 / 56.  4.101
    
I/System.out: FFMpeg lib onProgress  libavdevice    56.  0.100 / 56.  0.100
    
I/System.out: FFMpeg lib onProgress  libavfilter     5.  1.100 /  5.  1.100
    
I/System.out: FFMpeg lib onProgress  libswscale      3.  0.100 /  3.  0.100
    
I/System.out: FFMpeg lib onProgress  libswresample   1.  1.100 /  1.  1.100
    
I/System.out: FFMpeg lib onProgress  libpostproc    53.  0.100 / 53.  0.100
    
I/System.out: FFMpeg lib onProgressInput #0, mov,mp4,m4a,3gp,3g2,mj2, from '/storage/emulated/0/IHH_y/147.mp4':
    
I/System.out: FFMpeg lib onProgress  Metadata:
    
I/System.out: FFMpeg lib onProgress    major_brand     : mp42
    
I/System.out: FFMpeg lib onProgress    minor_version   : 0
    
I/System.out: FFMpeg lib onProgress    compatible_brands: isommp42
    
I/System.out: FFMpeg lib onProgress    creation_time   : 2016-06-23 20:00:50
    
I/System.out: FFMpeg lib onProgress  Duration: 00:00:08.92, start: 0.000000, bitrate: 8966 kb/s
    
I/System.out: FFMpeg lib onProgress    Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1920x1080, 8983 kb/s, 16.66 fps, 16.67 tbr, 90k tbn, 180k tbc (default)
    
I/System.out: FFMpeg lib onProgress    Metadata:
    
I/System.out: FFMpeg lib onProgress      rotate          : 90
    
I/System.out: FFMpeg lib onProgress      creation_time   : 2016-06-23 20:00:50
    
I/System.out: FFMpeg lib onProgress      handler_name    : VideoHandle
    
I/System.out: FFMpeg lib onProgress    Side data:
    
I/System.out: FFMpeg lib onProgress      displaymatrix: rotation of -90.00 degrees
    
I/System.out: FFMpeg lib onProgress    Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 254 kb/s (default)
    
I/System.out: FFMpeg lib onProgress    Metadata:
    
I/System.out: FFMpeg lib onProgress      creation_time   : 2016-06-23 20:00:50
    
I/System.out: FFMpeg lib onProgress      handler_name    : SoundHandle
    
I/System.out: FFMpeg lib onProgress[libx264 @ 0xb5e08800] using cpu capabilities: none!
    
I/System.out: FFMpeg lib onProgress[libx264 @ 0xb5e08800] profile Constrained Baseline, level 3.2
    
I/System.out: FFMpeg lib onProgress[libx264 @ 0xb5e08800] 264 - core 142 - H.264/MPEG-4 AVC codec - Copyleft 2003-2014 - http://www.videolan.org/x264.html - options: cabac=0 ref=1 deblock=0:0:0 analyse=0:0 me=dia subme=0 psy=1 psy_rd=1.00:0.00 mixed_ref=0 me_range=16 chroma_me=1 trellis=0 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=0 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=0 weightp=0 keyint=250 keyint_min=16 scenecut=0 intra_refresh=0 rc=abr mbtree=0 bitrate=880 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=0
    
I/System.out: FFMpeg lib onProgressOutput #0, mp4, to '/storage/emulated/0/IHH_y/147upload.mp4':
    
I/System.out: FFMpeg lib onProgress  Metadata:
    
I/System.out: FFMpeg lib onProgress    major_brand     : mp42
    
I/System.out: FFMpeg lib onProgress    minor_version   : 0
    
I/System.out: FFMpeg lib onProgress    compatible_brands: isommp42
    
I/System.out: FFMpeg lib onProgress    encoder         : Lavf56.4.101
    
I/System.out: FFMpeg lib onProgress    Stream #0:0(eng): Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 1080x1080, q=-1--1, 880 kb/s, 16.67 fps, 12800 tbn, 16.67 tbc (default)
    
I/System.out: FFMpeg lib onProgress    Metadata:
    
I/System.out: FFMpeg lib onProgress      rotate          : 90
    
I/System.out: FFMpeg lib onProgress      creation_time   : 2016-06-23 20:00:50
    
I/System.out: FFMpeg lib onProgress      handler_name    : VideoHandle
    
I/System.out: FFMpeg lib onProgress      encoder         : Lavc56.1.100 libx264
    
I/System.out: FFMpeg lib onProgress    Stream #0:1(eng): Audio: aac ([64][0][0][0] / 0x0040), 48000 Hz, stereo, fltp, 128 kb/s (default)
    
I/System.out: FFMpeg lib onProgress    Metadata:
    
I/System.out: FFMpeg lib onProgress      creation_time   : 2016-06-23 20:00:50
    
I/System.out: FFMpeg lib onProgress      handler_name    : SoundHandle
    
I/System.out: FFMpeg lib onProgress      encoder         : Lavc56.1.100 aac
    
I/System.out: FFMpeg lib onProgressStream mapping:
    
I/System.out: FFMpeg lib onProgress  Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
    
I/System.out: FFMpeg lib onProgress  Stream #0:1 -> #0:1 (aac (native) -> aac (native))
    
I/System.out: FFMpeg lib onProgressPress [q] to stop, [?] for help
    
I/System.out: FFMpeg lib onProgressframe=    0 fps=0.0 q=0.0 size=       0kB time=00:00:00.96 bitrate=   0.4kbits/s    
    
I/System.out: FFMpeg lib onProgressframe=    7 fps=6.8 q=0.0 size=       0kB time=00:00:01.05 bitrate=   0.4kbits/s    
    
I/System.out: FFMpeg lib onProgressframe=   15 fps=9.7 q=35.0 size=      87kB time=00:00:01.07 bitrate= 660.5kbits/s    
    
I/System.out: FFMpeg lib onProgressframe=   15 fps=7.3 q=35.0 size=      87kB time=00:00:01.88 bitrate= 376.7kbits/s    
    
I/System.out: FFMpeg lib onProgressframe=   25 fps=9.6 q=35.0 size=     154kB time=00:00:02.05 bitrate= 613.4kbits/s    
    
I/System.out: FFMpeg lib onProgressframe=   32 fps= 10 q=35.0 size=     199kB time=00:00:02.07 bitrate= 784.7kbits/s    
    
I/System.out: FFMpeg lib onProgressframe=   32 fps=8.8 q=35.0 size=     199kB time=00:00:02.93 bitrate= 556.4kbits/s    
    
I/System.out: FFMpeg lib onProgressframe=   42 fps= 10 q=35.0 size=     263kB time=00:00:03.06 bitrate= 705.2kbits/s    
    
I/System.out: FFMpeg lib onProgressframe=   49 fps= 10 q=36.0 size=     328kB time=00:00:03.08 bitrate= 870.9kbits/s    
    
I/System.out: FFMpeg lib onProgressframe=   50 fps=9.5 q=36.0 size=     341kB time=00:00:04.06 bitrate= 687.2kbits/s    
    
I/System.out: FFMpeg lib onProgressframe=   59 fps= 10 q=36.0 size=     407kB time=00:00:04.06 bitrate= 821.2kbits/s    
    
I/System.out: FFMpeg lib onProgressframe=   66 fps= 10 q=36.0 size=     462kB time=00:00:04.10 bitrate= 922.7kbits/s    
    
I/System.out: FFMpeg lib onProgressframe=   66 fps=9.7 q=36.0 size=     462kB time=00:00:05.00 bitrate= 757.4kbits/s    
    
I/System.out: FFMpeg lib onProgressframe=   77 fps= 10 q=35.0 size=     534kB time=00:00:05.06 bitrate= 864.0kbits/s    
    
I/System.out: FFMpeg lib onProgressframe=   83 fps= 11 q=34.0 size=     566kB time=00:00:05.44 bitrate= 850.2kbits/s    
    
I/System.out: FFMpeg lib onProgressframe=   89 fps= 11 q=34.0 size=     600kB time=00:00:06.06 bitrate= 810.6kbits/s    
    
I/System.out: FFMpeg lib onProgressframe=   95 fps= 11 q=35.0 size=     636kB time=00:00:06.06 bitrate= 859.0kbits/s    
    
I/System.out: FFMpeg lib onProgressframe=  100 fps= 11 q=34.0 size=     676kB time=00:00:06.28 bitrate= 881.8kbits/s    
    
I/System.out: FFMpeg lib onProgressframe=  104 fps= 11 q=33.0 size=     702kB time=00:00:07.07 bitrate= 812.8kbits/s    
    
I/System.out: FFMpeg lib onProgressframe=  114 fps= 11 q=34.0 size=     765kB time=00:00:07.07 bitrate= 885.7kbits/s    
    
I/System.out: FFMpeg lib onProgressframe=  117 fps= 11 q=33.0 size=     787kB time=00:00:07.26 bitrate= 887.7kbits/s    
    
I/System.out: FFMpeg lib onProgressframe=  117 fps= 10 q=33.0 size=     787kB time=00:00:08.03 bitrate= 802.8kbits/s    
    
I/System.out: FFMpeg lib onProgressframe=  129 fps= 11 q=33.0 size=     857kB time=00:00:08.07 bitrate= 869.1kbits/s    
    
I/System.out: FFMpeg lib onProgressframe=  138 fps= 11 q=34.0 size=     922kB time=00:00:08.07 bitrate= 935.1kbits/s    
    
I/System.out: FFMpeg lib onProgressframe=  140 fps= 11 q=33.0 size=     937kB time=00:00:08.58 bitrate= 894.1kbits/s    
    
I/System.out: FFMpeg lib onProgressframe=  144 fps= 11 q=-1.0 Lsize=    1032kB time=00:00:08.96 bitrate= 943.0kbits/s    
    
I/System.out: FFMpeg lib onProgressvideo:889kB audio:138kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.512610%
    
I/System.out: FFMpeg lib onProgress[libx264 @ 0xb5e08800] frame I:1     Avg QP:33.00  size: 21090
    
I/System.out: FFMpeg lib onProgress[libx264 @ 0xb5e08800] frame P:143   Avg QP:34.49  size:  6217
    
I/System.out: FFMpeg lib onProgress[libx264 @ 0xb5e08800] mb I  I16..4: 100.0%  0.0%  0.0%
    
I/System.out: FFMpeg lib onProgress[libx264 @ 0xb5e08800] mb P  I16..4: 10.3%  0.0%  0.0%  P16..4: 21.2%  0.0%  0.0%  0.0%  0.0%    skip:68.5%
    
I/System.out: FFMpeg lib onProgress[libx264 @ 0xb5e08800] final ratefactor: 34.56
    
I/System.out: FFMpeg lib onProgress[libx264 @ 0xb5e08800] coded y,uvDC,uvAC intra: 16.9% 5.8% 0.1% inter: 6.2% 0.9% 0.0%
    
I/System.out: FFMpeg lib onProgress[libx264 @ 0xb5e08800] i16 v,h,dc,p: 55% 30%  8%  7%
    
I/System.out: FFMpeg lib onProgress[libx264 @ 0xb5e08800] i8c dc,h,v,p: 55% 18% 24%  3%
    
I/System.out: FFMpeg lib onProgress[libx264 @ 0xb5e08800] kb/s:842.72
    
I/System.out: FFMpeg lib onSuccessWARNING: linker: /data/data/com.x.y/files/ffmpeg has text relocations. This is wasting memory and prevents security hardening. Please fix.
    
I/System.out: ffmpeg version n2.4.2 Copyright (c) 2000-2014 the FFmpeg developers
    
I/System.out:   built on Oct  7 2014 15:08:46 with gcc 4.8 (GCC)
    
I/System.out:   configuration: --target-os=linux --cross-prefix=/home/sb/Source-Code/ffmpeg-android/toolchain-android/bin/arm-linux-androideabi- --arch=arm --cpu=cortex-a8 --enable-runtime-cpudetect --sysroot=/home/sb/Source-Code/ffmpeg-android/toolchain-android/sysroot --enable-pic --enable-libx264 --enable-libass --enable-libfreetype --enable-libfribidi --enable-fontconfig --enable-pthreads --disable-debug --disable-ffserver --enable-version3 --enable-hardcoded-tables --disable-ffplay --disable-ffprobe --enable-gpl --enable-yasm --disable-doc --disable-shared --enable-static --pkg-config=/home/sb/Source-Code/ffmpeg-android/ffmpeg-pkg-config --prefix=/home/sb/Source-Code/ffmpeg-android/build/armeabi-v7a-neon --extra-cflags='-I/home/sb/Source-Code/ffmpeg-android/toolchain-android/include -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all -mfpu=neon' --extra-ldflags='-L/home/sb/Source-Code/ffmpeg-android/toolchain-android/lib -Wl,-z,relro -Wl,-z,now -pie' --extra-libs='-lpng -lexpat -lm' --extra-cxxflags=
    
I/System.out:   libavutil      54.  7.100 / 54.  7.100
    
I/System.out:   libavcodec     56.  1.100 / 56.  1.100
    
I/System.out:   libavformat    56.  4.101 / 56.  4.101
    
I/System.out:   libavdevice    56.  0.100 / 56.  0.100
    
I/System.out:   libavfilter     5.  1.100 /  5.  1.100
    
I/System.out:   libswscale      3.  0.100 /  3.  0.100
    
I/System.out:   libswresample   1.  1.100 /  1.  1.100
    
I/System.out:   libpostproc    53.  0.100 / 53.  0.100
    
I/System.out: Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/storage/emulated/0/IHH_y/147.mp4':
    
I/System.out:   Metadata:
    
I/System.out:     major_brand     : mp42
    
I/System.out:     minor_version   : 0
    
I/System.out:     compatible_brands: isommp42
    
I/System.out:     creation_time   : 2016-06-23 20:00:50
    
I/System.out:   Duration: 00:00:08.92, start: 0.000000, bitrate: 8966 kb/s
    
I/System.out:     Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1920x1080, 8983 kb/s, 16.66 fps, 16.67 tbr, 90k tbn, 180k tbc (default)
    
I/System.out:     Metadata:
    
I/System.out:       rotate          : 90
    
I/System.out:       creation_time   : 2016-06-23 20:00:50
    
I/System.out:       handler_name    : VideoHandle
    
I/System.out:     Side data:
    
I/System.out:       displaymatrix: rotation of -90.00 degrees
    
I/System.out:     Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 254 kb/s (default)
    
I/System.out:     Metadata:
    
I/System.out:       creation_time   : 2016-06-23 20:00:50
    
I/System.out:       handler_name    : SoundHandle
    
I/System.out: [libx264 @ 0xb5e08800] using cpu capabilities: none!
    
I/System.out: [libx264 @ 0xb5e08800] profile Constrained Baseline, level 3.2
    
I/System.out: [libx264 @ 0xb5e08800] 264 - core 142 - H.264/MPEG-4 AVC codec - Copyleft 2003-2014 - http://www.videolan.org/x264.html - options: cabac=0 ref=1 deblock=0:0:0 analyse=0:0 me=dia subme=0 psy=1 psy_rd=1.00:0.00 mixed_ref=0 me_range=16 chroma_me=1 trellis=0 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=0 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=0 weightp=0 keyint=250 keyint_min=16 scenecut=0 intra_refresh=0 rc=abr mbtree=0 bitrate=880 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=0
    
I/System.out: Output #0, mp4, to '/storage/emulated/0/IHH_y/147upload.mp4':
    
I/System.out:   Metadata:
    
I/System.out:     major_brand     : mp42
    
I/System.out:     minor_version   : 0
    
I/System.out:     compatible_brands: isommp42
    
I/System.out:     encoder         : Lavf56.4.101
    
I/System.out:     Stream #0:0(eng): Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 1080x1080, q=-1--1, 880 kb/s, 16.67 fps, 12800 tbn, 16.67 tbc (default)
    
I/System.out:     Metadata:
    
I/System.out:       rotate          : 90
    
I/System.out:       creation_time   : 2016-06-23 20:00:50
    
I/System.out:       handler_name    : VideoHandle
    
I/System.out:       encoder         : Lavc56.1.100 libx264
    
I/System.out:     Stream #0:1(eng): Audio: aac ([64][0][0][0] / 0x0040), 48000 Hz, stereo, fltp, 128 kb/s (default)
    
I/System.out:     Metadata:
    
I/System.out:       creation_time   : 2016-06-23 20:00:50
    
I/System.out:       handler_name    : SoundHandle
    
I/System.out:       encoder         : Lavc56.1.100 aac
    
I/System.out: Stream mapping:
    
I/System.out:   Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
    
I/System.out:   Stream #0:1 -> #0:1 (aac (native) -> aac (native))
    
I/System.out: Press [q] to stop, [?] for help
    
I/System.out: frame=    0 fps=0.0 q=0.0 size=       0kB time=00:00:00.96 bitrate=   0.4kbits/s    
    
I/System.out: frame=    7 fps=6.8 q=0.0 size=       0kB time=00:00:01.05 bitrate=   0.4kbits/s    
    
I/System.out: frame=   15 fps=9.7 q=35.0 size=      87kB time=00:00:01.07 bitrate= 660.5kbits/s    
    
I/System.out: frame=   15 fps=7.3 q=35.0 size=      87kB time=00:00:01.88 bitrate= 376.7kbits/s    
    
I/System.out: frame=   25 fps=9.6 q=35.0 size=     154kB time=00:00:02.05 bitrate= 613.4kbits/s    
    
I/System.out: frame=   32 fps= 10 q=35.0 size=     199kB time=00:00:02.07 bitrate= 784.7kbits/s    
    
I/System.out: frame=   32 fps=8.8 q=35.0 size=     199kB time=00:00:02.93 bitrate= 556.4kbits/s    
    
I/System.out: frame=   42 fps= 10 q=35.0 size=     263kB time=00:00:03.06 bitrate= 705.2kbits/s    
    
I/System.out: frame=   49 fps= 10 q=36.0 size=     328kB time=00:00:03.08 bitrate= 870.9kbits/s    
    
I/System.out: frame=   50 fps=9.5 q=36.0 size=     341kB time=00:00:04.06 bitrate= 687.2kbits/s    
    
I/System.out: frame=   59 fps= 10 q=36.0 size=     407kB time=00:00:04.06 bitrate= 821.2kbits/s    
    
I/System.out: frame=   66 fps= 10 q=36.0 size=     462kB time=00:00:04.10 bitrate= 922.7kbits/s    
    
I/System.out: frame=   66 fps=9.7 q=36.0 size=     462kB time=00:00:05.00 bitrate= 757.4kbits/s    
    
I/System.out: frame=   77 fps= 10 q=35.0 size=     534kB time=00:00:05.06 bitrate= 864.0kbits/s    
    
I/System.out: frame=   83 fps= 11 q=34.0 size=     566kB time=00:00:05.44 bitrate= 850.2kbits/s    
    
I/System.out: frame=   89 fps= 11 q=34.0 size=     600kB time=00:00:06.06 bitrate= 810.6kbits/s    
    
I/System.out: frame=   95 fps= 11 q=35.0 size=     636kB time=00:00:06.06 bitrate= 859.0kbits/s    
    
I/System.out: frame=  100 fps= 11 q=34.0 size=     676kB time=00:00:06.28 bitrate= 881.8kbits/s    
    
I/System.out: frame=  104 fps= 11 q=33.0 size=     702kB time=00:00:07.07 bitrate= 812.8kbits/s    
    
I/System.out: frame=  114 fps= 11 q=34.0 size=     765kB time=00:00:07.07 bitrate= 885.7kbits/s    
    
I/System.out: frame=  117 fps= 11 q=33.0 size=     787kB time=00:00:07.26 bitrate= 887.7kbits/s    
    
I/System.out: frame=  117 fps= 10 q=33.0 size=     787kB time=00:00:08.03 bitrate= 802.8kbits/s    
    
I/System.out: frame=  129 fps= 11 q=33.0 size=     857kB time=00:00:08.07 bitrate= 869.1kbits/s    
    
I/System.out: frame=  138 fps= 11 q=34.0 size=     922kB time=00:00:08.07 bitrate= 935.1kbits/s    
    
I/System.out: frame=  140 fps= 11 q=33.0 size=     937kB time=00:00:08.58 bitrate= 894.1kbits/s    
    
I/System.out: frame=  144 fps= 11 q=-1.0 Lsize=    1032kB time=00:00:08.96 bitrate= 943.0kbits/s    
    
I/System.out: video:889kB audio:138kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.512610%
    
I/System.out: [libx264 @ 0xb5e08800] frame I:1     Avg QP:33.00  size: 21090
    
I/System.out: [libx264 @ 0xb5e08800] frame P:143   Avg QP:34.49  size:  6217
    
I/System.out: [libx264 @ 0xb5e08800] mb I  I16..4: 100.0%  0.0%  0.0%
    
I/System.out: [libx264 @ 0xb5e08800] mb P  I16..4: 10.3%  0.0%  0.0%  P16..4: 21.2%  0.0%  0.0%  0.0%  0.0%    skip:68.5%
    
I/System.out: [libx264 @ 0xb5e08800] final ratefactor: 34.56
    
I/System.out: [libx264 @ 0xb5e08800] coded y,uvDC,uvAC intra: 16.9% 5.8% 0.1% inter: 6.2% 0.9% 0.0%
    
I/System.out: [libx264 @ 0xb5e08800] i16 v,h,dc,p: 55% 30%  8%  7%

    As you can see from the log, the conversion fps is very low
    Need help to make it faster.

    Note : The source file is MP4 and output file is MP4 as well

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