Recherche avancée

Sur d’autres sites (11256)

• ffmpeg outputs single frame video while I'm trying to create video from set of frames

  31 octobre 2019, par int_32

  I have set of frames, and want to create video from them.

  I use the following command :

  /usr/local/bin/ffmpeg -i /tmp/frames/0.png -i /tmp/frames/1.png -i /tmp/frames/2.png -i /tmp/frames/3.png -i /tmp/frames/4.png -i /tmp/frames/5.png -i /tmp/frames/6.png -i /tmp/frames/7.png -i /tmp/frames/8.png -i /tmp/frames/9.png -i /tmp/frames/10.png -i /tmp/frames/11.png -i /tmp/frames/12.png -i /tmp/frames/13.png -i /tmp/frames/14.png -i /tmp/frames/15.png -i /tmp/frames/16.png -i /tmp/frames/17.png -i /tmp/frames/18.png -i /tmp/frames/19.png -i /tmp/frames/20.png -i /tmp/frames/21.png -i /tmp/frames/22.png -i /tmp/frames/23.png -i /tmp/frames/24.png -i /tmp/frames/25.png -i /tmp/frames/26.png -i /tmp/frames/27.png -i /tmp/frames/28.png -i /tmp/frames/29.png -i /tmp/frames/30.png -i /tmp/frames/31.png -i /tmp/frames/32.png -i /tmp/frames/33.png -i /tmp/frames/34.png -i /tmp/frames/35.png -i /tmp/frames/36.png -i /tmp/frames/37.png -i /tmp/frames/38.png -i /tmp/frames/39.png -i /tmp/frames/40.png -i /tmp/frames/41.png -i /tmp/frames/42.png -i /tmp/frames/43.png -i /tmp/frames/44.png -i /tmp/frames/45.png -i /tmp/frames/46.png -i /tmp/frames/47.png -i /tmp/frames/48.png -i /tmp/frames/49.png -i /tmp/frames/50.png -i /tmp/frames/51.png -i /tmp/frames/52.png -i /tmp/frames/53.png -i /tmp/frames/54.png -i /tmp/frames/55.png -i /tmp/frames/56.png -i /tmp/frames/57.png -i /tmp/frames/58.png -i /tmp/frames/59.png -i /tmp/frames/60.png -i /tmp/frames/61.png -i /tmp/frames/62.png -i /tmp/frames/63.png -i /tmp/frames/64.png -i /tmp/frames/65.png -i /tmp/frames/66.png -i /tmp/frames/67.png -i /tmp/frames/68.png -i /tmp/frames/69.png -i /tmp/frames/70.png -i /tmp/frames/71.png -i /tmp/frames/72.png -i /tmp/frames/73.png -i /tmp/frames/74.png -i /tmp/frames/75.png -i /tmp/frames/76.png -i /tmp/frames/77.png -i /tmp/frames/78.png -i /tmp/frames/79.png -i /tmp/frames/80.png -i /tmp/frames/81.png -i /tmp/frames/82.png -i /tmp/frames/83.png -i /tmp/frames/84.png -i /tmp/frames/85.png -i /tmp/frames/86.png -i /tmp/frames/87.png -i /tmp/frames/88.png -i /tmp/frames/89.png -i /tmp/frames/90.png -i /tmp/frames/91.png -i /tmp/frames/92.png -i /tmp/frames/93.png -i /tmp/frames/94.png -i /tmp/frames/95.png -i /tmp/frames/96.png -i /tmp/frames/97.png -i /tmp/frames/98.png -i /tmp/frames/99.png -vcodec libx264 -pix_fmt yuv420p -r 25 -t 4 -y /tmp/0.mp4

  But resulting video is just single frame :

  ffmpeg -i /tmp/0.mp4 
  
  ffmpeg version 4.1 Copyright (c) 2000-2018 the FFmpeg developers
  
    built with Apple LLVM version 10.0.0 (clang-1000.10.44.4)
  
    configuration: --prefix=/usr/local/Cellar/ffmpeg/4.1_1 --enable-shared --enable-pthreads --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags='-I/Library/Java/JavaVirtualMachines/jdk1.8.0_192.jdk/Contents/Home/include -I/Library/Java/JavaVirtualMachines/jdk1.8.0_192.jdk/Contents/Home/include/darwin' --host-ldflags= --enable-ffplay --enable-gpl --enable-libmp3lame --enable-libopus --enable-libsnappy --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-libxvid --enable-lzma --enable-chromaprint --enable-frei0r --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libfdk-aac --enable-libfontconfig --enable-libfreetype --enable-libgme --enable-libgsm --enable-libmodplug --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --enable-librsvg --enable-librtmp --enable-librubberband --enable-libsoxr --enable-libspeex --enable-libsrt --enable-libssh --enable-libtesseract --enable-libtwolame --enable-libvidstab --enable-libvmaf --enable-libwavpack --enable-libwebp --enable-libzimg --enable-libzmq --enable-opencl --enable-openssl --enable-videotoolbox --enable-libopenjpeg --disable-decoder=jpeg2000 --extra-cflags=-I/usr/local/Cellar/openjpeg/2.3.0/include/openjpeg-2.3 --enable-nonfree
  
    libavutil      56. 22.100 / 56. 22.100
  
    libavcodec     58. 35.100 / 58. 35.100
  
    libavformat    58. 20.100 / 58. 20.100
  
    libavdevice    58.  5.100 / 58.  5.100
  
    libavfilter     7. 40.101 /  7. 40.101
  
    libavresample   4.  0.  0 /  4.  0.  0
  
    libswscale      5.  3.100 /  5.  3.100
  
    libswresample   3.  3.100 /  3.  3.100
  
    libpostproc    55.  3.100 / 55.  3.100
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/tmp/0.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf58.20.100
  
    Duration: 00:00:00.04, start: 0.000000, bitrate: 684 kb/s
  
      Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 800x800, 524 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc (default)
  
      Metadata:
  
        handler_name    : VideoHandler

  What’s wrong ?

• vaapi_encode : Convert to send/receive API

  20 décembre 2018, par Mark Thompson

  vaapi_encode : Convert to send/receive API
  This attaches the logic of picking the mode of for the next picture to
  
  the output, which simplifies some choices by removing the concept of
  
  the picture for which input is not yet available.  At the same time,
  
  we allow more complex reference structures and track more reference
  
  metadata (particularly the contents of the DPB) for use in the
  
  codec-specific code.
  It also adds flags to explicitly track the available features of the
  
  different codecs.  The new structure also allows open-GOP support, so
  
  that is now available for codecs which can do it.
  

  • [DH] doc/encoders.texi
  • [DH] libavcodec/vaapi_encode.c
  • [DH] libavcodec/vaapi_encode.h
  • [DH] libavcodec/vaapi_encode_h264.c
  • [DH] libavcodec/vaapi_encode_h265.c
  • [DH] libavcodec/vaapi_encode_mjpeg.c
  • [DH] libavcodec/vaapi_encode_mpeg2.c
  • [DH] libavcodec/vaapi_encode_vp8.c
  • [DH] libavcodec/vaapi_encode_vp9.c

• Apply filters to video while preview and save it with applied filter and original audio in android

  27 novembre 2019, par FreakInDroid

  I am new to video processing. I want to apply a filter to a video at runtime, and I want to save that video after filter applied.

  Regarding this I’m doing a research. I has gone through many libraries but I’m struggling to achieve my aim.

  Developement environment

  Migw-64 with windows 7 64 bit
  
  Android Studio 2.1 preview 5
  
  heap space 4GB 
  
  com.android.tools.build:gradle:2.1.0
  
  android-ndk-r12-win-x86_64
  
  com.android.tools.build:gradle-experimental:0.7.0  --> to build NDK

  I have tried

  1. AndroidFastImageprocessingLibrary

     Chrisbatt -> AndroidFastImageProcessing in github

     This library use GLSurfaceview to display filters but we could not save it to mp4 file.

     So I found another implementation of it icmobilelab -> AndroidFastImageProcessing in github

     This library use JavaCV with ffmpeg compiled. But it failed.

  2. JavaCV

     JavaCV use outdated ffmpeg and it is abandoned.

  3. Grafika -> on github

     I tried Android Fast Image Processing with RecordFBOActivity in grafika. But i have failed. This library use MediaRecorder to record the contents of GLSurfaceView. But it records video without audio (I have tested the RecordFBOActivity and analyze the code).

  4. filter packs in platform_frameworks

     github.com/android/platform_frameworks_base/blob/master/media/mca/filterpacks/java/android/filterpacks/videosink/MediaEncoderFilter.java
     its android 4.2 edited core. I can’t run this code because too many jni dependencies.

  5. ffmpeg

     github.com/guardianproject/android-ffmpeg
     I tried ffmpeg3.1 compilation procedure implemented by guardianproject. it successfullay built a static library but i cannot build dynamic library (so files). I’m stuck with a linker error. I think the linking order matters. I tried the linking order specified in below link
     https://fritzone.wordpress.com/2010/05/11/link-with-static-ffmpeg/
     but it won’t help. the following error occurs

     [armeabi-v7a] SharedLibrary  : libffmpeg.so
     
     jni/ffmpeg.c:200: error: undefined reference to 'av_frame_alloc'
     
     jni/ffmpeg.c:201: error: undefined reference to 'av_frame_alloc'
     
     jni/ffmpeg.c:209: error: undefined reference to 'av_register_all'
     
     jni/ffmpeg.c:210: error: undefined reference to 'avfilter_register_all'
     
     jni/ffmpeg.c:45: error: undefined reference to 'avformat_open_input'
     
     jni/ffmpeg.c:50: error: undefined reference to 'avformat_find_stream_info'
     
     jni/ffmpeg.c:56: error: undefined reference to 'av_find_best_stream'
     
     jni/ffmpeg.c:63: error: undefined reference to 'av_opt_set_int'
     
     jni/ffmpeg.c:66: error: undefined reference to 'avcodec_open2'
     
     jni/ffmpeg.c:67: error: undefined reference to 'av_log'
     
     jni/ffmpeg.c:78: error: undefined reference to 'avfilter_get_by_name'
     
     jni/ffmpeg.c:79: error: undefined reference to 'avfilter_get_by_name'
     
     jni/ffmpeg.c:80: error: undefined reference to 'avfilter_inout_alloc'
     
     jni/ffmpeg.c:81: error: undefined reference to 'avfilter_inout_alloc'
     
     jni/ffmpeg.c:85: error: undefined reference to 'avfilter_graph_alloc'
     
     jni/ffmpeg.c:98: error: undefined reference to 'avfilter_graph_create_filter'
     
     jni/ffmpeg.c:106: error: undefined reference to 'avfilter_graph_create_filter'
     
     jni/ffmpeg.c:113: error: undefined reference to 'av_int_list_length_for_size'
     
     jni/ffmpeg.c:113: error: undefined reference to 'av_opt_set_bin'
     
     jni/ffmpeg.c:116: error: undefined reference to 'av_log'
     
     jni/ffmpeg.c:131: error: undefined reference to 'av_strdup'
     
     jni/ffmpeg.c:142: error: undefined reference to 'av_strdup'
     
     jni/ffmpeg.c:147: error: undefined reference to 'avfilter_graph_parse_ptr'
     
     jni/ffmpeg.c:151: error: undefined reference to 'avfilter_graph_config'
     
     jni/ffmpeg.c:155: error: undefined reference to 'avfilter_inout_free'
     
     jni/ffmpeg.c:156: error: undefined reference to 'avfilter_inout_free'
     
     jni/ffmpeg.c:218: error: undefined reference to 'av_read_frame'
     
     jni/ffmpeg.c:223: error: undefined reference to 'avcodec_decode_video2'
     
     jni/ffmpeg.c:230: error: undefined reference to 'av_frame_get_best_effort_timestamp'
     
     jni/ffmpeg.c:233: error: undefined reference to 'av_buffersrc_add_frame_flags'
     
     jni/ffmpeg.c:234: error: undefined reference to 'av_log'
     
     jni/ffmpeg.c:240: error: undefined reference to 'av_buffersink_get_frame'
     
     jni/ffmpeg.c:171: error: undefined reference to 'av_rescale_q'
     
     jni/ffmpeg.c:246: error: undefined reference to 'av_frame_unref'
     
     jni/ffmpeg.c:248: error: undefined reference to 'av_frame_unref'
     
     jni/ffmpeg.c:251: error: undefined reference to 'av_packet_unref'
     
     jni/ffmpeg.c:254: error: undefined reference to 'avfilter_graph_free'
     
     jni/ffmpeg.c:255: error: undefined reference to 'avcodec_close'
     
     jni/ffmpeg.c:256: error: undefined reference to 'avformat_close_input'
     
     jni/ffmpeg.c:257: error: undefined reference to 'av_frame_free'
     
     jni/ffmpeg.c:258: error: undefined reference to 'av_frame_free'
     
     jni/include/libavutil/error.h:111: error: undefined reference to 'av_strerror'
     
     collect2.exe: error: ld returned 1 exit status
     
     make: *** [obj/local/armeabi/libffmpeg.so] Error 1

  6. MediaCodec, MediaExtractor,MediaRecord,MediaMuxer

     Finally I planned to combine AndroidFastImageProcessing with MediaCodec, MediaExtractor,MediaRecord,MediaMuxer.

     So I try to Extract audio from video using mediamuxer
     https://gist.github.com/sayan801/9a39ccad0818d2b3499a.
     I use mp4 video (MIME Type video/avc that have 2 tracks audio and video) to extract audio but the resultant file is corrupted (just 4 kb)

  I think this question is another view of the existing problem if anybody experienced this problem please guide me.