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• avformat/hlsenc : add var_stream_map LANGUAGE field string parameter

  23 janvier 2019, par Steven Liu

  avformat/hlsenc : add var_stream_map LANGUAGE field string parameter
  use a:0,agroup:aud_low,default:Yes,language:CHN a:1,agroup:aud_low,language:ENG
  
          a:2,agroup:aud_high,default:YesYes,language:CHN a:3,agroup:aud_high,language:ENG
  
          v:0,agroup:aud_low v:1,agroup:aud_high
  
          create master m3u8 list.
  result :
  
  EXTM3U
  
  EXT-X-VERSION:3
  
  EXT-X-MEDIA:TYPE=AUDIO,GROUP-ID="group_aud_low",NAME="audio_0",DEFAULT=YES,LANGUAGE="CHN",URI="out_0.m3u8"
  
  EXT-X-MEDIA:TYPE=AUDIO,GROUP-ID="group_aud_low",NAME="audio_1",DEFAULT=NO,LANGUAGE="ENG",URI="out_1.m3u8"
  
  EXT-X-MEDIA:TYPE=AUDIO,GROUP-ID="group_aud_high",NAME="audio_2",DEFAULT=YES,LANGUAGE="CHN",URI="out_2.m3u8"
  
  EXT-X-MEDIA:TYPE=AUDIO,GROUP-ID="group_aud_high",NAME="audio_3",DEFAULT=NO,LANGUAGE="ENG",URI="out_3.m3u8"
  
  EXT-X-STREAM-INF:BANDWIDTH=1170400,RESOLUTION=640x480,CODECS="avc1.64001e,mp4a.40.2",AUDIO="group_aud_low"
  
  out_4.m3u8
  
  EXT-X-STREAM-INF:BANDWIDTH=3440800,RESOLUTION=640x480,CODECS="avc1.64001e,mp4a.40.2",AUDIO="group_aud_high"
  
  out_5.m3u8
  Signed-off-by : Steven Liu <lq@chinaffmpeg.org>
  

  • [DH] doc/muxers.texi
  • [DH] libavformat/dashenc.c
  • [DH] libavformat/hlsenc.c
  • [DH] libavformat/hlsplaylist.c
  • [DH] libavformat/hlsplaylist.h

• alternative for ffmpeg without using ffmpeg

  24 mars 2016, par sanoj lawrence

  amusing following code to get image from video(snapshot)

  <?php
  
  $ffmpeg = 'ffmpeg\bin\ffmpeg.exe';
  
  $video  = 'upload/'.$location;
  
  $image  = 'upload/thumb/'.$random_name.'.jpg';
  
  $second = 1;
  
  $cmd = "$ffmpeg -i $video 2>&1";
  
  if (preg_match('/Duration: ((\d+):(\d+):(\d+))/s', `$cmd`, $time)) {
  
      $total = ($time[2] * 3600) + ($time[3] * 60) + $time[4];
  
      $second = rand(1, ($total - 1));
  
  }
  
  $cmd = "$ffmpeg -i $video -deinterlace -an -ss $second -t 00:00:01 -r 1 -y -vcodec mjpeg -f mjpeg $image 2>&1";
  
  $return = `$cmd`;
  
  ?>

  how do i get snapshot form video without using ffmpeg

  by using jquery or java is it possible like extraction snapshot and video duration for video

  because recently i found this using id3 detecting video duration etc.

• Using FFMPEG in a Visual Studio 2013 ultimate project, linking error LNK2019

  27 mars 2015, par Jokke Ruokolainen

  I’m trying to use FFmpeg library and TIFF lib in my project (I’m making a .dll and/or .exe also). I have searched through the answers provided in here and Google, and linked the /dev/include 64-bit (32-bit VS making 64-bit project) to Additional Include Directories and shared/bin (library files) 64-bit to linker->Additional Library Directories and did the Linker->Additional Depedencies->avformat.lib addition. I also copied the .dll files to my project folder, but I still keep getting the LNK2019. Here’s how I use the libs and the output of the compiler :

  extern "C" {
  
  
  
  #ifndef inline
  
  #define inline __inline
  
  #endif
  
  #ifndef UINT64_C
  
  #define UINT64_C uint64_t
  
  #define INT64_C int64_t
  
  #endif
  
  
  
  #include 
  
  #include 
  
  #include 
  
  
  
  }
  
  #pragma comment(lib, "avformat.lib")
  
  
  
  1>------ Build started: Project: GHSOM_V3, Configuration: FFmpeg x64 ------
  
  1>  ffmpeg_io.cpp
  
  1>ffmpeg_io.obj : error LNK2019: unresolved external symbol av_malloc referenced in function "struct AVFrame * __cdecl alloc_picture(enum AVPixelFormat,int,int)" (?alloc_picture@@YAPEAUAVFrame@@W4AVPixelFormat@@HH@Z)
  
  1>ffmpeg_io.obj : error LNK2019: unresolved external symbol av_free referenced in function "struct AVFrame * __cdecl alloc_picture(enum AVPixelFormat,int,int)" (?alloc_picture@@YAPEAUAVFrame@@W4AVPixelFormat@@HH@Z)
  
  1>ffmpeg_io.obj : error LNK2019: unresolved external symbol av_freep referenced in function "void __cdecl aviCloseWriter(struct tagAVIWriter *)" (?aviCloseWriter@@YAXPEAUtagAVIWriter@@@Z)
  
  1>ffmpeg_io.obj : error LNK2019: unresolved external symbol av_rescale_q referenced in function "void __cdecl aviWriteFrame(struct tagAVIWriter *,unsigned char *)" (?aviWriteFrame@@YAXPEAUtagAVIWriter@@PEAE@Z)
  
  1>ffmpeg_io.obj : error LNK2019: unresolved external symbol av_frame_alloc referenced in function "struct AVFrame * __cdecl alloc_picture(enum AVPixelFormat,int,int)" (?alloc_picture@@YAPEAUAVFrame@@W4AVPixelFormat@@HH@Z)
  
  1>ffmpeg_io.obj : error LNK2019: unresolved external symbol avcodec_open2 referenced in function "void __cdecl initiate_avi_create(struct tagAVIWriter *,int,int)" (?initiate_avi_create@@YAXPEAUtagAVIWriter@@HH@Z)
  
  1>ffmpeg_io.obj : error LNK2019: unresolved external symbol avcodec_close referenced in function "void __cdecl aviCloseReader(struct tagAVIReader *)" (?aviCloseReader@@YAXPEAUtagAVIReader@@@Z)
  
  1>ffmpeg_io.obj : error LNK2019: unresolved external symbol av_init_packet referenced in function "void __cdecl aviWriteFrame(struct tagAVIWriter *,unsigned char *)" (?aviWriteFrame@@YAXPEAUtagAVIWriter@@PEAE@Z)
  
  1>ffmpeg_io.obj : error LNK2019: unresolved external symbol av_free_packet referenced in function "void __cdecl aviReadFrame(struct tagAVIReader *,unsigned char *,int)" (?aviReadFrame@@YAXPEAUtagAVIReader@@PEAEH@Z)
  
  1>ffmpeg_io.obj : error LNK2019: unresolved external symbol avcodec_find_decoder referenced in function "void __cdecl initiate_avi_open(struct tagAVIReader *)" (?initiate_avi_open@@YAXPEAUtagAVIReader@@@Z)
  
  1>ffmpeg_io.obj : error LNK2019: unresolved external symbol avcodec_decode_video2 referenced in function "void __cdecl aviReadFrame(struct tagAVIReader *,unsigned char *,int)" (?aviReadFrame@@YAXPEAUtagAVIReader@@PEAEH@Z)
  
  1>ffmpeg_io.obj : error LNK2019: unresolved external symbol avcodec_find_encoder referenced in function "void __cdecl initiate_avi_create(struct tagAVIWriter *,int,int)" (?initiate_avi_create@@YAXPEAUtagAVIWriter@@HH@Z)
  
  1>ffmpeg_io.obj : error LNK2019: unresolved external symbol avcodec_find_encoder_by_name referenced in function "void __cdecl initiate_avi_create(struct tagAVIWriter *,int,int)" (?initiate_avi_create@@YAXPEAUtagAVIWriter@@HH@Z)
  
  1>ffmpeg_io.obj : error LNK2019: unresolved external symbol avcodec_encode_video referenced in function "void __cdecl aviWriteFrame(struct tagAVIWriter *,unsigned char *)" (?aviWriteFrame@@YAXPEAUtagAVIWriter@@PEAE@Z)
  
  1>ffmpeg_io.obj : error LNK2019: unresolved external symbol avpicture_fill referenced in function "struct AVFrame * __cdecl alloc_picture(enum AVPixelFormat,int,int)" (?alloc_picture@@YAPEAUAVFrame@@W4AVPixelFormat@@HH@Z)
  
  1>ffmpeg_io.obj : error LNK2019: unresolved external symbol avpicture_get_size referenced in function "struct AVFrame * __cdecl alloc_picture(enum AVPixelFormat,int,int)" (?alloc_picture@@YAPEAUAVFrame@@W4AVPixelFormat@@HH@Z)
  
  1>ffmpeg_io.obj : error LNK2019: unresolved external symbol sws_getContext referenced in function "void __cdecl initiate_avi_create(struct tagAVIWriter *,int,int)" (?initiate_avi_create@@YAXPEAUtagAVIWriter@@HH@Z)
  
  1>ffmpeg_io.obj : error LNK2019: unresolved external symbol sws_scale referenced in function "void __cdecl aviReadFrame(struct tagAVIReader *,unsigned char *,int)" (?aviReadFrame@@YAXPEAUtagAVIReader@@PEAEH@Z)
  
  1>tiff_io.obj : error LNK2019: unresolved external symbol TIFFClose referenced in function "void __cdecl tiffReadRGBA(char *,int *,int *,unsigned char *)" (?tiffReadRGBA@@YAXPEADPEAH1PEAE@Z)
  
  1>tiff_io.obj : error LNK2019: unresolved external symbol TIFFGetField referenced in function "void __cdecl tiffReadRGBA(char *,int *,int *,unsigned char *)" (?tiffReadRGBA@@YAXPEADPEAH1PEAE@Z)
  
  1>tiff_io.obj : error LNK2019: unresolved external symbol TIFFSetField referenced in function "void __cdecl tiffWriteRGBA(char *,int,int,unsigned char *)" (?tiffWriteRGBA@@YAXPEADHHPEAE@Z)
  
  1>tiff_io.obj : error LNK2019: unresolved external symbol TIFFReadRGBAImage referenced in function "void __cdecl tiffReadRGBA(char *,int *,int *,unsigned char *)" (?tiffReadRGBA@@YAXPEADPEAH1PEAE@Z)
  
  1>tiff_io.obj : error LNK2019: unresolved external symbol TIFFOpen referenced in function "void __cdecl tiffReadRGBA(char *,int *,int *,unsigned char *)" (?tiffReadRGBA@@YAXPEADPEAH1PEAE@Z)
  
  1>tiff_io.obj : error LNK2019: unresolved external symbol TIFFWriteEncodedStrip referenced in function "void __cdecl tiffWriteRGBA(char *,int,int,unsigned char *)" (?tiffWriteRGBA@@YAXPEADHHPEAE@Z)
  
  1>Video.obj : error LNK2019: unresolved external symbol "void __cdecl DCT2d(double *,double *,long,long)" (?DCT2d@@YAXPEAN0JJ@Z) referenced in function "void __cdecl ForwardDCT(class DataShuffle *,unsigned char *,char *,int,int,int,int,int,bool)" (?ForwardDCT@@YAXPEAVDataShuffle@@PEAEPEADHHHHH_N@Z)
  
  1>Video.obj : error LNK2019: unresolved external symbol "void __cdecl IDCT2d(double *,double *,long,long)" (?IDCT2d@@YAXPEAN0JJ@Z) referenced in function "void __cdecl ExportVideoFromDCT(class DataShuffle *,char *,char *,int,int,int,int)" (?ExportVideoFromDCT@@YAXPEAVDataShuffle@@PEAD1HHHH@Z)
  
  1>Video.obj : error LNK2019: unresolved external symbol "void __cdecl CopyToZigZag(double *,double *,long,long,long)" (?CopyToZigZag@@YAXPEAN0JJJ@Z) referenced in function "void __cdecl ForwardDCT(class DataShuffle *,unsigned char *,char *,int,int,int,int,int,bool)" (?ForwardDCT@@YAXPEAVDataShuffle@@PEAEPEADHHHHH_N@Z)
  
  1>Video.obj : error LNK2019: unresolved external symbol "void __cdecl CopyFromZigZag(double *,double *,long,long,long)" (?CopyFromZigZag@@YAXPEAN0JJJ@Z) referenced in function "void __cdecl ExportVideoFromDCT(class DataShuffle *,char *,char *,int,int,int,int)" (?ExportVideoFromDCT@@YAXPEAVDataShuffle@@PEAD1HHHH@Z)