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  • how to build ffmpeg with burn text on hls output while maintaining the aspect ratio

    26 février 2016, par Aameer

    My objective is to burn a text(watermark) at a particular time range on the outputed hls video, I also have to change just the height and maintain the aspect ratio which I am able to do but the burning in text part is not working. First the ffmpeg I used is for 14.04 ubuntu, details are here. I don’t think this build supports subtitle (docs) filter which I could have used for my purpose as described here. when i enter ffmpeg into the terminal this is the output

    (ffmpeg)aameer@falcon:~/Documents/projects/ffmpeg$ ffmpeg 
    
ffmpeg version N-78590-g5590ab4 Copyright (c) 2000-2016 the FFmpeg developers
    
  built with gcc 4.8 (Ubuntu 4.8.4-2ubuntu1~14.04.1)
    
  configuration: --extra-libs=-ldl --prefix=/opt/ffmpeg --mandir=/usr/share/man --enable-avresample --disable-debug --enable-nonfree --enable-gpl --enable-version3 --enable-libopencore-amrnb --enable-libopencore-amrwb --disable-decoder=amrnb --disable-decoder=amrwb --enable-libpulse --enable-libfreetype --enable-gnutls --enable-libx264 --enable-libx265 --enable-libfdk-aac --enable-libvorbis --enable-libmp3lame --enable-libopus --enable-libvpx --enable-libspeex --enable-libass --enable-avisynth --enable-libsoxr --enable-libxvid --enable-libvidstab
    
  libavutil      55. 18.100 / 55. 18.100
    
  libavcodec     57. 24.103 / 57. 24.103
    
  libavformat    57. 25.100 / 57. 25.100
    
  libavdevice    57.  0.101 / 57.  0.101
    
  libavfilter     6. 32.100 /  6. 32.100
    
  libavresample   3.  0.  0 /  3.  0.  0
    
  libswscale      4.  0.100 /  4.  0.100
    
  libswresample   2.  0.101 /  2.  0.101
    
  libpostproc    54.  0.100 / 54.  0.100
    
Hyper fast Audio and Video encoder
    
usage: ffmpeg [options] [[infile options] -i infile]... {[outfile options] outfile}...
    

    
Use -h to get full help or, even better, run 'man ffmpeg'

    I tried

    (ffmpeg)aameer@falcon:~/Documents/projects/ffmpeg$ ffmpeg -threads 4 -i "input_sintel_trailer_720p.mp4" -profile:v baseline -level 4.0 -vf scale="trunc(360*a/2)*2:360, subtitles='subtitles.srt'"  -start_number 0 -hls_time 10 -hls_list_size 0 -f hls videos/4444/index_4444_360_.m3u8

    and got an error

    [Parsed_subtitles_1 @ 0x2f1b7e0] Shaper: FriBidi 0.19.6 (SIMPLE) HarfBuzz-ng 0.9.27 (COMPLEX)
    
[Parsed_subtitles_1 @ 0x2f1b7e0] Unable to open subtitles.srt
    
[AVFilterGraph @ 0x2f1ac00] Error initializing filter 'subtitles' with args 'subtitles.srt'
    
Error opening filters!

    then I tried this

    (ffmpeg)aameer@falcon:~/Documents/projects/ffmpeg$ ffmpeg -threads 4 -i "input_sintel_trailer_720p.mp4" -profile:v baseline -level 4.0 -vf "scale='trunc(360*a/2)*2:360', drawtext:drawtext"  -start_number 0 -hls_time 10 -hls_list_size 0 -f hls videos/4444/index_4444_360_.m3u8

    based on an answer here and got this error

    [AVFilterGraph @ 0x2695c20] No such filter: 'drawtext:drawtext'
    
Error opening filters!

    I tried a static build too which i got from here but still couldn’t make it work. with this static build i tried :

    ffmpeg version N-63893-gc69defd Copyright (c) 2000-2014 the FFmpeg developers
    
  built on Jul 16 2014 05:38:01 with gcc 4.6 (Debian 4.6.3-1)
    
  configuration: --prefix=/root/ffmpeg-static/64bit --extra-cflags='-I/root/ffmpeg-static/64bit/include -static' --extra-ldflags='-L/root/ffmpeg-static/64bit/lib -static' --extra-libs='-lxml2 -lexpat -lfreetype' --enable-static --disable-shared --disable-ffserver --disable-doc --enable-bzlib --enable-zlib --enable-postproc --enable-runtime-cpudetect --enable-libx264 --enable-gpl --enable-libtheora --enable-libvorbis --enable-libmp3lame --enable-gray --enable-libass --enable-libfreetype --enable-libopenjpeg --enable-libspeex --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-version3 --enable-libvpx
    
  libavutil      52. 89.100 / 52. 89.100
    
  libavcodec     55. 66.101 / 55. 66.101
    
  libavformat    55. 43.100 / 55. 43.100
    
  libavdevice    55. 13.101 / 55. 13.101
    
  libavfilter     4.  8.100 /  4.  8.100
    
  libswscale      2.  6.100 /  2.  6.100
    
  libswresample   0. 19.100 /  0. 19.100
    
  libpostproc    52.  3.100 / 52.  3.100
    
Hyper fast Audio and Video encoder
    
usage: ffmpeg [options] [[infile options] -i infile]... {[outfile options] outfile}...
    

    
Use -h to get full help or, even better, run 'man ffmpeg'
    

    
(ffmpeg)aameer@falcon:~/Documents/projects/ffmpeg$ ./ffmpeg -threads 4 -i "input_sintel_trailer_720p.mp4" -profile:v baseline -level 4.0 -vf scale="trunc(360*a/2)*2:360, subtitles='subtitle.srt'"  -start_number 0 -hls_time 10 -hls_list_size 0 -f hls videos/4444/index_4444_360_.m3u8

    but got an error

    Could not write header for output file #0 (incorrect codec parameters ?): No such file or directory

    Any help in this regard would be appreciated. I don’t have much experience with compiling , otherwise would have done with support for libass as mentioned in the documentation here

    console output after trying the first potential answer :

    (ffmpeg)aameer@falcon:~/Documents/projects/ffmpeg$ ls
    
bbb_sunflower_1080p_30fps_normal.mp4  ffmpeg_log_multiprocess.txt  ffmpeg.static.64bit.latest  input_sintel_trailer_720p.mp4  watermark.png
    
encoding_script.sh                    ffmpeg_log_simple.txt        ffprobe                     subtitle.srt
    
ffmpeg                                ffmpeg_log.txt               fontconfig                  videos
    
(ffmpeg)aameer@falcon:~/Documents/projects/ffmpeg$ ffmpeg -threads 4 -i input_sintel_trailer_720p.mp4 -profile:v baseline -level 4.0 -vf "scale=-2:360,subtitles='subtitle.srt'" -start_number 0 -hls_time 10 -hls_list_size 0 -f hls videos/4444/index_4444_360_.m3u8
    
ffmpeg version N-78590-g5590ab4 Copyright (c) 2000-2016 the FFmpeg developers
    
  built with gcc 4.8 (Ubuntu 4.8.4-2ubuntu1~14.04.1)
    
  configuration: --extra-libs=-ldl --prefix=/opt/ffmpeg --mandir=/usr/share/man --enable-avresample --disable-debug --enable-nonfree --enable-gpl --enable-version3 --enable-libopencore-amrnb --enable-libopencore-amrwb --disable-decoder=amrnb --disable-decoder=amrwb --enable-libpulse --enable-libfreetype --enable-gnutls --enable-libx264 --enable-libx265 --enable-libfdk-aac --enable-libvorbis --enable-libmp3lame --enable-libopus --enable-libvpx --enable-libspeex --enable-libass --enable-avisynth --enable-libsoxr --enable-libxvid --enable-libvidstab
    
  libavutil      55. 18.100 / 55. 18.100
    
  libavcodec     57. 24.103 / 57. 24.103
    
  libavformat    57. 25.100 / 57. 25.100
    
  libavdevice    57.  0.101 / 57.  0.101
    
  libavfilter     6. 32.100 /  6. 32.100
    
  libavresample   3.  0.  0 /  3.  0.  0
    
  libswscale      4.  0.100 /  4.  0.100
    
  libswresample   2.  0.101 /  2.  0.101
    
  libpostproc    54.  0.100 / 54.  0.100
    
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'input_sintel_trailer_720p.mp4':
    
  Metadata:
    
    major_brand     : isom
    
    minor_version   : 512
    
    compatible_brands: isomiso2avc1mp41
    
    creation_time   : 1970-01-01 00:00:00
    
    title           : Sintel Trailer
    
    artist          : Durian Open Movie Team
    
    encoder         : Lavf52.62.0
    
    copyright       : (c) copyright Blender Foundation | durian.blender.org
    
    description     : Trailer for the Sintel open movie project
    
  Duration: 00:00:52.21, start: 0.000000, bitrate: 1165 kb/s
    
    Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1280x720, 1033 kb/s, 24 fps, 24 tbr, 24 tbn, 48 tbc (default)
    
    Metadata:
    
      creation_time   : 1970-01-01 00:00:00
    
      handler_name    : VideoHandler
    
    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 126 kb/s (default)
    
    Metadata:
    
      creation_time   : 1970-01-01 00:00:00
    
      handler_name    : SoundHandler
    
[Parsed_subtitles_1 @ 0x2bdb700] Shaper: FriBidi 0.19.6 (SIMPLE) HarfBuzz-ng 0.9.27 (COMPLEX)
    
[Parsed_subtitles_1 @ 0x2bdb700] Using font provider fontconfig
    
[libx264 @ 0x2bc8b60] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2
    
[libx264 @ 0x2bc8b60] profile Constrained Baseline, level 4.0
    
Output #0, hls, to 'videos/4444/index_4444_360_.m3u8':
    
  Metadata:
    
    major_brand     : isom
    
    minor_version   : 512
    
    compatible_brands: isomiso2avc1mp41
    
    description     : Trailer for the Sintel open movie project
    
    title           : Sintel Trailer
    
    artist          : Durian Open Movie Team
    
    copyright       : (c) copyright Blender Foundation | durian.blender.org
    
    encoder         : Lavf57.25.100
    
    Stream #0:0(und): Video: h264 (libx264), yuv420p, 640x360, q=-1--1, 24 fps, 24 tbn, 24 tbc (default)
    
    Metadata:
    
      creation_time   : 1970-01-01 00:00:00
    
      handler_name    : VideoHandler
    
      encoder         : Lavc57.24.103 libx264
    
    Side data:
    
      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
    
    Stream #0:1(und): Audio: aac (LC), 48000 Hz, stereo, fltp, 128 kb/s (default)
    
    Metadata:
    
      creation_time   : 1970-01-01 00:00:00
    
      handler_name    : SoundHandler
    
      encoder         : Lavc57.24.103 aac
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
    
  Stream #0:1 -> #0:1 (aac (native) -> aac (native))
    
Could not write header for output file #0 (incorrect codec parameters ?): No such file or directory
    
[aac @ 0x2bc9ac0] Qavg: -nan
    
(ffmpeg)aameer@falcon:~/Documents/projects/ffmpeg$

  • Playing sound and video out of a streaming .asf file in iOS application

    24 février 2014, par Luc

    I need to read audio and video out of a .asf file that is streamed to my iOS7 application.
    I've compiled ffmpeg but I'm notre really sure this is the way to go. If this is the good tool, I do not know where to go from here.
    Any pointer ?

  • Application is crashed in Xcode 4.5 for h264 ?

    6 novembre 2012, par sreenivas

    In my application i am using h.264 & ffmpeg for encoding and decoding video ?

    this is working fine in
    1.macOS X 10.4 & XCode 3.2.3
    2.macOS X 10.7.4 & XCode 4.2.3

    when i am compiling same in
    macOS X 10.7.4 & XCode 4.5

    can i chage any thing for iOS or h.264 it self having problem for iOS6

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