Recherche avancée

Sur d’autres sites (4931)

• Android - Adding Effects to Videos like Instagram

  7 novembre 2017, par San

  I am in need of a idea to apply filters to video like Instagram, video trimming and fetching images from the video. I have researched a lot and all I can come up with is the following ways to achieve what I want :

  1. FFMPEG
  2. Open CV
  3. Camera2 API

  FFMPEG :

  As far as FFMPEG is considered, majority of the average level droid devs feel that its a pain cause it involves NDK and compiling the FFMPEG commands.The above mentioned link is self-explanatory and it saves me the pain of setting up the NDK but the biggest drawback in this is that its not stable and its REALLY slow.
  My query on this topic is that how do I compile FFMPEG into my project. I have gone through several links to integrate FFMPEG as follows :

  One

  Two

  Three

  The third link seemed to make sense but ultimately I couldn’t understand completely and go where,do what after following those steps.

  Question 1 :

  Is there is a solid Android - FFMPEG Integration Document that can help a beginner like me ?

  Open CV

  Question 2 :

  I haven’t tried Open CV yet but will it be worth it ?

  Camera2 API

  Question 3 :

  As far as I researched, I can see that the Camera2 API can help us shoot videos and images with effects added to it but will it be useful for me to process the already existing videos and images ? I don’t have the requirement to add effects to the camera while its captured, its aftermath is where I want to add my effects.

  If someone is kind enough to accept my stupidity and help me out, I am thankful to them.

  Will going ahead with FFMPEG be good or OpenCV or Camera2 API will be better ?

• avformat/dashdec : add dash demuxer base version

  9 septembre 2017, par Steven Liu

  avformat/dashdec : add dash demuxer base version
  ffmpeg need a dash demuxer for demux the dash formats base on
  
  https://github.com/samsamsam-iptvplayer/exteplayer3/blob/master/tmp/ffmpeg/patches/3.2.2/000001_add_dash_demux.patch
  TODO :
  
  1. support multi bitrate dash.
  v2 fixed :
  
  1. from autodetect to disabled
  
  2. from camelCase code style to ffmpeg code style
  
  3. from RepType to AVMediaType
  
  4. fix variable typo
  
  5. change time value from uint32_t to uint64_t
  
  6. removed be used once API
  
  7. change 'time(NULL)`, except it is not 2038-safe.' to av_gettime and av_timegm
  
  8. merge complex free operation to free_fragment
  
  9. use API from snprintf to av_asprintf
  v3 fixed :
  
  1. fix typo from —enabled-xml2 to —enable-xml2
  v4 fixed :
  
  1. from —enable-xml2 to —enable-libxml2
  
  2. move system includes to top
  
  3. remove nouse includes
  
  4. rename enum name
  
  5. add a trailing comma for the last entry enum
  
  6. fix comment typo
  
  7. add const to DASHContext class front
  
  8. check sscanf if return arguments and give warning message when error
  
  9. check validity before free seg->url and seg
  
  10. check if the val is null, before use atoll
  v5 fixed :
  
  1. fix typo from mainifest to manifest
  v6 fixed :
  
  1. from realloc to av_realloc
  
  2. from free to av_free
  v7 fixed :
  
  1. remove the -lxml2 from configure when require_pkg_config
  v8 fixed :
  
  1. fix replace filename template by av_asprintf secure problem
  v9 modified :
  
  1. make manifest parser clearly
  v10 fixed :
  
  1. fix function API name code style
  
  2. remove redundant strreplace call
  
  3. remove redundant memory operation and check return value from get_content_url()
  
  4. add space between ) and 
  
  5. remove no need to log the value for print
  
  v11 fixed :
  
  1. from atoll to strtoll
  
  Suggested-by : Michael Niedermayer <michael@niedermayer.cc>
  v12 fixed :
  
  1. remove strreplace and instead by av_strreplace
  
  Suggested-by : Nicolas George <george@nsup.org>
  v13 fixed :
  
  1. fix bug : cannot play :
  
  http://dash.edgesuite.net/akamai/bbb_30fps/bbb_30fps.mpd
  
  Reported-by : Andy Furniss <adf.lists@gmail.com>
  v14 fixed :
  
  1. fix bug : TLS connection was non-properly terminated
  
  2. fix bug : No trailing CRLF found in HTTP header
  
  Reported-by : Andy Furniss <adf.lists@gmail.com>
  v15 fixed :
  
  1. play youtube link : ffmpeg -i $(youtube-dl -J "https://www.youtube.com/watch?v=XmL19DOP_Ls" ; | jq -r ".requested_formats[0].manifest_url")
  
  2. code refine for timeline living stream
  
  Reported-by : Ricardo Constantino <wiiaboo@gmail.com>
  v16 fixed :
  
  1. remove the snprintf and instead by get_segment_filename make safety
  
  2. remove unnecessary loops
  
  3. updated xmlStrcmp and xmlFree to av_* functions
  
  4. merge code repeat into one function
  
  5. add memory alloc faild check
  
  6. update update_init_section and open_url
  
  7. output safety error message when filename template not safe
  
  Suggested-by : wm4 <nfxjfg@googlemail.com>
  v17 fixed :
  
  1. add memory alloc faild check
  
  2. fix resource space error at free_representation
  v18 fixed :
  
  1. add condition of template format
  v19 fixed :
  
  1. fix typo of the option describe
  v20 fixed :
  
  1. add the c->base_url alloc check
  
  2. make the DASHTmplId same to dashenc
  v21 fixed :
  
  1. remove get_repl_pattern_and_format and get_segment_filename
  
  2. process use dashcomm APIs
  v22 fixed :
  
  1. modify the include "dashcomm.h" to include "dash.h"
  
  2. use internal API from dash_fill_tmpl_params to ff_dash_fill_tmpl_params
  Signed-off-by : Steven Liu <lq@onvideo.cn>
  
  Signed-off-by : samsamsam <samsamsam@o2.pl>
  

  • [DH] configure
  • [DH] libavformat/Makefile
  • [DH] libavformat/allformats.c
  • [DH] libavformat/dashdec.c

• Ffmpeg error in Docker Container : ffmpeg exited with code 1 :

  2 octobre 2017, par Uğur Kaya

  I am currently working on a project and almost ready to deploy, but there is one problem : the code which is working perfectly on my Ubuntu 16.04 (Elementary OS Loki) machine does not work in Docker container. What might be the problem in my code ?

  Here is my Dockerfile :

  FROM beevelop/nodejs-python:latest
  
  
  
  RUN apt-get -y update && apt-get install -y libav-tools
  
  RUN ffmpeg --help
  
  
  
  # Global install yarn package manager
  
  RUN apt-get update && apt-get install -y curl apt-transport-https && \
  
      curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | apt-key add - && \
  
      echo "deb https://dl.yarnpkg.com/debian/ stable main" | tee /etc/apt/sources.list.d/yarn.list && \
  
      apt-get update && apt-get install -y yarn
  
  
  
  WORKDIR /app
  
  COPY package.json .
  
  RUN yarn
  
  COPY . .
  
  RUN yarn prod:build
  
  EXPOSE 8080
  
  CMD [ "yarn", "start" ]

  I run sudo docker exec -it  ffmpeg --help and it outputs the expected help print. In my code, I download a Youtube video in mp4 format with this code :

  const download = idParam => (
  
    new Promise((fulfill, reject) => {
  
      const id = `http://www.youtube.com/watch?v=${idParam}`
  
      let videoMeta
  
      youtubedl(id, ['--format=36'], { cwd: __dirname })
  
        .on('info', (info) => {
  
          const customDimensions = calculateCustomDimensions(info.format)
  
          videoMeta = { ...info, ...customDimensions }
  
        })
  
        .pipe(fs.createWriteStream(`temp/${idParam}.mp4`))
  
        .on('finish', () => {
  
          console.log('Dirname: ', __dirname)
  
          fulfill(videoMeta)
  
        })
  
        .on('error', (err) => {
  
          console.log('There is an error:', err)
  
          console.log('Dirname: ', __dirname)
  
          reject(err)
  
        })
  
    })
  
  )

  And then try to process the video with fluent-ffmpeg :

  const processVideo = (videoName, cropStart, cropEnd) => (
  
    new Promise((resolve, reject) => {
  
      try {
  
        console.log('Trying to run ffmpeg binary.')
  
        ffmpeg()
  
          .addInput(`temp/${videoName}.mp4`)
  
          .seekInput(cropStart)
  
          .duration(cropEnd)
  
          .outputOption('-movflags frag_keyframe+faststart')
  
          .on('end', () => {
  
            console.log('Processing has finished with ffmpeg. ')
  
            console.log('Resolved for upload: ', [`temp/cropped_${videoName}.mp4`, `temp/${videoName}.mp4`])
  
            console.log('Going out of processVideo script.')
  
            resolve([`temp/cropped_${videoName}.mp4`, `temp/${videoName}.mp4`])
  
          })
  
          .on('error', (err, stdout, stderr) => {
  
            console.log('Error. Output option olmasına rağmen: ', err.message)
  
            console.log('ffmpeg output:\n', stdout)
  
            console.log('ffmpeg stderr:\n', stderr)
  
          })
  
          .save(`temp/cropped_${videoName}.mp4`)
  
      } catch (e) {
  
        console.log('There has been an error while converting ffmpeg binary!')
  
        console.log(e.msg)
  
        console.log(e.code)
  
        reject(e)
  
      }
  
    })
  
  )

  It gives the following error :

  Entering download script.
  
  WARNING: Assuming --restrict-filenames since file system encoding cannot encode all characters. Set the LC_ALL environment variable to fix this.
  
  
  
  `info.resolution` is deprecated, use `info.format`
  
  Dirname:  /app/lib/server/scripts
  
  Download script is done.
  
  Custom dimensions of the downloaded video:  320 180
  
  Crop start and end of the downloaded video:  00:00:00.517 00:00:00.998
  
  Entering processVideo script.
  
  Trying to run ffmpeg binary.
  
  Error:  ffmpeg exited with code 1: 
  
  ffmpeg output:
  
  
  
  ffmpeg stderr:
  
   ffmpeg version 2.8.11-0ubuntu0.16.04.1 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=0ubuntu0.16.04.1 --build-suffix=-ffmpeg --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --cc=cc --cxx=g++ --enable-gpl --enable-shared --disable-stripping --disable-decoder=libopenjpeg --disable-decoder=libschroedinger --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-libmodplug --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-librtmp --enable-libschroedinger --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-libzvbi --enable-openal --enable-opengl --enable-x11grab --enable-libdc1394 --enable-libiec61883 --enable-libzmq --enable-frei0r --enable-libx264 --enable-libopencv
  
    libavutil      54. 31.100 / 54. 31.100
  
    libavcodec     56. 60.100 / 56. 60.100
  
    libavformat    56. 40.101 / 56. 40.101
  
    libavdevice    56.  4.100 / 56.  4.100
  
    libavfilter     5. 40.101 /  5. 40.101
  
    libavresample   2.  1.  0 /  2.  1.  0
  
    libswscale      3.  1.101 /  3.  1.101
  
    libswresample   1.  2.101 /  1.  2.101
  
    libpostproc    53.  3.100 / 53.  3.100
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'temp/kfchvCyHmsc.mp4':
  
    Metadata:
  
      major_brand     : 3gp6
  
      minor_version   : 256
  
      compatible_brands: isom3gp6
  
      creation_time   : 2015-03-26 09:22:44
  
    Duration: 00:00:08.27, start: 0.000000, bitrate: 218 kb/s
  
      Stream #0:0(und): Video: mpeg4 (Simple Profile) (mp4v / 0x7634706D), yuv420p, 320x180 [SAR 1:1 DAR 16:9], 187 kb/s, 23.98 fps, 23.98 tbr, 24k tbn, 24k tbc (default)
  
      Metadata:
  
        creation_time   : 2015-03-26 09:22:44
  
        handler_name    : IsoMedia File Produced by Google, 5-11-2011
  
      Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 22050 Hz, mono, fltp, 31 kb/s (default)
  
      Metadata:
  
        creation_time   : 2015-03-26 09:22:44
  
        handler_name    : IsoMedia File Produced by Google, 5-11-2011
  
  [libx264 @ 0x2641fc0] using SAR=1/1
  
  [libx264 @ 0x2641fc0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2
  
  [libx264 @ 0x2641fc0] profile High, level 1.2
  
  [libx264 @ 0x2641fc0] 264 - core 148 r2643 5c65704 - H.264/MPEG-4 AVC codec - Copyleft 2003-2015 - 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=23 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
  
  [aac @ 0x2642f00] The encoder 'aac' is experimental but experimental codecs are not enabled, add '-strict -2' if you want to use it.