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• lavf/rtsp.c : Fix stimeout option not applied on http tunnel

  15 avril 2019, par Steven Liu

  lavf/rtsp.c : Fix stimeout option not applied on http tunnel
  stimeout option is already used in tcp transport, since
  
  http is based on tcp, pass the option to http for tunneling
  
  case.
  Reviewed-by : Steven Liu <lq@onvideo.cn>
  
  Signed-off-by : Jun Li <junli1026@gmail.com>
  

  • [DH] libavformat/rtsp.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     JavaCV use outdated ffmpeg and it is abandoned.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.

• ffmpeg : video + scaled watermark with multiply filter applied

  5 novembre 2018, par PawelN

  after a night of trying different options with applying my watermark on a video, I gave up :).
  What I tried to do is :

  • scale video to desired size (i.e. scale=640x480)
  • add watermark on its top left corner (10:10)
  • marge video with watermark with blend=all_mode='multiply'

  I’ve tried many options and that one I think is almost correct :

  fmpeg -i "${2}${3}" -i ${WMARK} -r 20 -y \
  
               -filter_complex "[0:0]scale=${6}x${7}, setsar=sar=1[a];[a][1:0] overlay=0:0[b];[a][b]blend=all_mode='multiply'"  \
  
              -an -c:v libx264 -crf "${8}" -preset "${9}" -tune "${10}" \
  
              -profile:v high -level 4.0 -movflags +faststart \
  
              "${4}${5}";

  but anyway I am getting errors.

  The nearest what I am looking for is :

  ffmpeg -i "${2}${3}" -i ${WMARK} -r 20 -y \
  
               -filter_complex "[0:v] scale=${6}:${7}[vi];[1:v][vi]scale2ref=(1510/408)*ih/3/sar:ih/3[wm][base];[base][wm]overlay=10:10"  \
  
               -pix_fmt yuv420p \
  
              -an -c:v libx264 -crf "${8}" -preset "${9}" -tune "${10}" \
  
              -profile:v high -level 4.0 -movflags +faststart \
  
              "${4}${5}";

  • Video is scaled to desired resolution ($[6 :$7)
  • watermark is scaled as well
  • ... but I dunno how add blend=all_mode=’multiply’ to it.

  Any ideas guys ?