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• ffmpeg drawtext Arabic fonts doesn't render correctly [closed]

  11 février 2024, par Mahmoud Abdellatief

  what i'm trying to achieve :
loop an image into a video and overlay Arabic Text from the Qur'an on it including the text diacritical mark, using a custom font.

  


  example of the text to be rendered :

  


  بِسْمِ ٱللَّهِ ٱلرَّحْمَـٰنِ ٱلرَّحِيمِ


  


  the font used :
https://fonts.qurancomplex.gov.sa/wp02/wp-content/uploads/2024/01/UthmanicHafs_v22.zip

  


  font's unicode module :

  


  Unicode Module 
 
The Research and Development Unit in the Computer Department at King Fahd Glorious Qur’an Printing Complex relied on the unicode system unicode to create (Hafs) font in the Uthmanic Script, because this system is followed globally among computer and systems manufacturing companies in the world.

Unicode organization is a global code group that is used to define all codes and letters used in most of the world's languages and gathered in one code to facilitate the presentation and delivery on information despite of the language used. This global coding uses 1 to 4 bytes (byte = 8 bits) to encode letters, and so far only a third of the number available in Unicode organization to encode the letters of these languages.

Taking into account Hafs font with the Uthmanic Script, which was built entirely on the unicode system. We can explore the basic letters that were formed according to the following figure:

Whereas the font was developed starting from code (0600 ) to code (066FF ) Taking into account there are several encoded letters that haven't been used at all so it was replaces with the code []. The displayed copy above is the one that is been developed from the basic Arabic coding (0600-06FF) which was updated by Unicode organization in 2009.


  


  expected result :
exported video with correctly rendered text using the given font.

  


  actual result :
the text rendered contains only the diacritical marks ( which are the accents on top of the letters ) without the actual letters.


  


  what i tried :
this is my test command which exports just an image for faster results :

  


  Ffmpeg -loop 1  -i "image-2.jpg" -vf "drawtext=text='بِسْمِ ٱللَّهِ ٱلرَّحْمَـٰنِ ٱلرَّحِيمِ':fontsize=124:fontcolor=white:fontfile='UthmanicHafsV22.ttf':x=(w-text_w)/2:y=(h-text_h)/2" -frames:v 1  "output.png"


  


  

  • tried adding ft_load_flags , almost tried all of them

  


  • tried text_shaping=1 , with no success

  


  • tried textfile instead of text

  


  • tried changing the font, any font i try with it always have different problems, either some squares instead of the diacritical mark

  


  


  p.s im having same results on both latest ffmpeg compiled by myself on macos terminal with all required libraries enabled , and also on flutter ffmpeg kit full gpl

  


• PHP code not proceeding to the line after exec ffmpeg

  5 avril 2014, par Sel

  I have this PHP snippet that I call through curl, in order to perform an ffmpeg encoding. I also have another line afterwards that marks this as having been done, using a database. I want this to trigger after the exec finished, which would imply that the file has finished encoding. However, the database is never actually changed (works if I try commenting out the exec) and I can't get a good gauge of when the file is done encoding. The database only changes when you run ANOTHER request on top of this one. Code below.

  $ID=$_POST['ID'];
  
  
  
  exec("/usr/local/bin/ffmpeg -i stockvideos/Intro2.m2v -f image2 -loop 1 -r 24 -i temppics/Intro2pic".$ID.".png -filter_complex \
  
  '[1:v]fade=in:st=0:d=1:alpha=1,fade=out:st=3:d=1:alpha=1[2wm];
  
  [0:v][wm]overlay=10:10[outv]' \
  
  -map [outv] -q 0 tempvideos/Intro2-".$ID.".m2v  >> 1.log 2>&1");
  
  
  
  $query_CreditVideoDone  =sprintf("Update Messages SET CreditTitlesDone=%s WHERE ID=%s", GetSQLValueString(1, "boolean"),GetSQLValueString($ID, "text"));
  
  
  
  $result = mysql_query($query_CreditVideoDone, $MMixer) or die(mysql_error());

  UPDATE : When I check the log (>2), it seems FFMPEG continues running even after the process is finished.

  frame= 4 fps=0.0 q=0.0 size= 103kB time=00:00:00.06 bitrate=12619.2kbits/s
  frame= 12 fps= 12 q=0.0 size= 562kB time=00:00:00.33 bitrate=13806.6kbits/s
  frame= 21 fps= 14 q=0.0 size= 1339kB time=00:00:00.63 bitrate=17307.1kbits/s
  frame= 29 fps= 14 q=0.0 size= 1682kB time=00:00:00.90 bitrate=15291.9kbits/s
  frame= 38 fps= 15 q=0.0 size= 2081kB time=00:00:01.20 bitrate=14192.5kbits/s
  frame= 51 fps= 16 q=0.0 size= 2677kB time=00:00:01.63 bitrate=13415.4kbits/s
  frame= 58 fps= 16 q=0.0 size= 2939kB time=00:00:01.86 bitrate=12884.0kbits/s
  frame= 66 fps= 16 q=0.0 size= 3338kB time=00:00:02.13 bitrate=12803.8kbits/s
  frame= 74 fps= 16 q=0.0 size= 3724kB time=00:00:02.40 bitrate=12700.2kbits/s
  frame= 82 fps= 16 q=0.0 size= 4012kB time=00:00:02.66 bitrate=12311.5kbits/s
  frame= 92 fps= 16 q=0.0 size= 4483kB time=00:00:03.00 bitrate=12229.7kbits/s
  frame= 102 fps= 16 q=0.0 size= 4951kB time=00:00:03.33 bitrate=12154.5kbits/s
  frame= 111 fps= 16 q=0.0 size= 5384kB time=00:00:03.63 bitrate=12126.7kbits/s
  frame= 118 fps= 16 q=0.0 size= 5622kB time=00:00:03.87 bitrate=11900.0kbits/s
  frame= 127 fps= 16 q=0.0 size= 6042kB time=00:00:04.17 bitrate=11867.2kbits/s
  frame= 138 fps= 16 q=0.0 size= 6550kB time=00:00:04.53 bitrate=11823.8kbits/s
  frame= 149 fps= 17 q=0.0 size= 7043kB time=00:00:04.90 bitrate=11763.8kbits/s
  frame= 157 fps= 17 q=0.0 size= 7338kB time=00:00:05.17 bitrate=11622.8kbits/s
  frame= 167 fps= 17 q=0.0 size= 7807kB time=00:00:05.50 bitrate=11616.5kbits/s
  frame= 176 fps= 17 q=0.0 size= 8215kB time=00:00:05.80 bitrate=11591.7kbits/s
  frame= 186 fps= 17 q=0.0 size= 8667kB time=00:00:06.13 bitrate=11564.4kbits/s
  frame= 196 fps= 17 q=0.0 size= 9254kB time=00:00:06.47 bitrate=11710.7kbits/s
  frame= 203 fps= 17 q=0.0 size= 9794kB time=00:00:06.70 bitrate=11962.6kbits/s
  frame= 211 fps= 17 q=0.0 size= 10135kB time=00:00:06.97 bitrate=11905.1kbits/s dup=0 drop=3
  frame= 211 fps= 16 q=0.0 size= 10135kB time=00:00:06.97 bitrate=11905.1kbits/s dup=0 drop=13
  frame= 211 fps= 15 q=0.0 size= 10135kB time=00:00:06.97 bitrate=11905.1kbits/s dup=0 drop=28
  frame= 211 fps= 15 q=0.0 size= 10135kB time=00:00:06.97 bitrate=11905.1kbits/s dup=0 drop=41
  frame= 211 fps= 14 q=0.0 size= 10135kB time=00:00:06.97 bitrate=11905.1kbits/s dup=0 drop=57
  frame= 211 fps= 14 q=0.0 size= 10135kB time=00:00:06.97 bitrate=11905.1kbits/s dup=0 drop=73
  frame= 211 fps= 13 q=0.0 size= 10135kB time=00:00:06.97 bitrate=11905.1kbits/s dup=0 drop=89
  frame= 211 fps= 13 q=0.0 size= 10135kB time=00:00:06.97 bitrate=11905.1kbits/s dup=0 drop=98
  frame= 211 fps= 13 q=0.0 size= 10135kB time=00:00:06.97 bitrate=11905.1kbits/s dup=0 drop=107
  frame= 211 fps= 12 q=0.0 size= 10135kB time=00:00:06.97 bitrate=11905.1kbits/s dup=0 drop=115
  frame= 211 fps= 12 q=0.0 size= 10135kB time=00:00:06.97 bitrate=11905.1kbits/s dup=0 drop=126
  frame= 211 fps= 11 q=0.0 size= 10135kB time=00:00:06.97 bitrate=11905.1kbits/s dup=0 drop=138
  frame= 211 fps= 11 q=0.0 size= 10135kB time=00:00:06.97 bitrate=11905.1kbits/s dup=0 drop=153
  frame= 211 fps= 11 q=0.0 size= 10135kB time=00:00:06.97 bitrate=11905.1kbits/s dup=0 drop=169
  frame= 211 fps= 11 q=0.0 size= 10135kB time=00:00:06.97 bitrate=11905.1kbits/s dup=0 drop=183
  frame= 211 fps= 10 q=0.0 size= 10135kB time=00:00:06.97 bitrate=11905.1kbits/s dup=0 drop=194
  frame= 211 fps= 10 q=0.0 size= 10135kB time=00:00:06.97 bitrate=11905.1kbits/s dup=0 drop=203
  frame= 211 fps=9.8 q=0.0 size= 10135kB time=00:00:06.97 bitrate=11905.1kbits/s dup=0 drop=214
  frame= 211 fps=9.6 q=0.0 size= 10135kB time=00:00:06.97 bitrate=11905.1kbits/s dup=0 drop=224
  frame= 211 fps=9.4 q=0.0 size= 10135kB time=00:00:06.97 bitrate=11905.1kbits/s dup=0 drop=233
  frame= 211 fps=9.1 q=0.0 size= 10135kB time=00:00:06.97 bitrate=11905.1kbits/s dup=0 drop=242
  frame= 211 fps=8.9 q=0.0 size= 10135kB time=00:00:06.97 bitrate=11905.1kbits/s dup=0 drop=251
  frame= 211 fps=8.7 q=0.0 size= 10135kB time=00:00:06.97 bitrate=11905.1kbits/s dup=0 drop=260
  frame= 211 fps=8.6 q=0.0 size= 10135kB time=00:00:06.97 bitrate=11905.1kbits/s dup=0 drop=269
  frame= 211 fps=8.4 q=0.0 size= 10135kB time=00:00:06.97 bitrate=11905.1kbits/s dup=0 drop=278
  frame= 211 fps=8.2 q=0.0 size= 10135kB time=00:00:06.97 bitrate=11905.1kbits/s dup=0 drop=289
  frame= 211 fps=8.0 q=0.0 size= 10135kB time=00:00:06.97 bitrate=11905.1kbits/s dup=0 drop=303
  frame= 211 fps=7.9 q=0.0 size= 10135kB time=00:00:06.97 bitrate=11905.1kbits/s dup=0 drop=315....

  And so on until it times out on the server. Any idea why this happens ? It seems to prevent execution from anything after it. Redirecting to dev/null doesn't help either - there is no error output of course but the process is still hanging the same way.

  Any help would be appreciated. Thanks !

  Thanks !

  Sel

• lavfi : Always propagate hw_frames_ctx through links

  25 octobre 2016, par Mark Thompson

  lavfi : Always propagate hw_frames_ctx through links
  Also adds a new flag to mark filters which are aware of hwframes and
  
  will perform this task themselves, and marks all appropriate filters
  
  with this flag.
  This is required to allow software-mapped hardware frames to work,
  
  because we need to have the frames context available for any later
  
  mapping operation in the filter graph.
  The output from the filter graph should only propagate further to an
  
  encoder if the hardware format actually matches the visible format
  
  (mapped frames are valid here and have an hw_frames_ctx, but this
  
  should not be given to the encoder as its hardware context).
  

  • [DBH] avconv.c
  • [DBH] libavfilter/avfilter.c
  • [DBH] libavfilter/avfilter.h
  • [DBH] libavfilter/internal.h
  • [DBH] libavfilter/vf_deinterlace_qsv.c
  • [DBH] libavfilter/vf_hwdownload.c
  • [DBH] libavfilter/vf_hwupload.c
  • [DBH] libavfilter/vf_hwupload_cuda.c
  • [DBH] libavfilter/vf_scale_npp.c
  • [DBH] libavfilter/vf_scale_qsv.c
  • [DBH] libavfilter/vf_scale_vaapi.c