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• New ffmpeg build issue : libavcodec/aacps_tablegen.h error : expected declaration specifiers or ‘...’ before numeric constant

  16 mars 2023, par gaamaa

  ffmpeg build error :
Raspberry Pi 4 B+,
Raspberry Pi OS Buster 32bit

  


  Two years back I built ffmpeg successfully with same script on the same setup.
Now I try building new version ffmpeg 5.0, I get below error and build fails.

  


  I nearly tried more than 10 times with even many other OS version.
Raspberry Pi OS Buster 32bit
Raspberry Pi OS Bullseys 32bit
Raspberry Pi OS Bullseys 64bit

  


  I even tried many scripts :
https://github.com/NRCHKB/nrchkb-ffmpeg-build
https://github.com/NRCHKB/nrchkb-ffmpeg-build/discussions/11
https://github.com/NRCHKB/nrchkb-ffmpeg-build/discussions/11#discussioncomment-5008967
https://gist.github.com/milankragujevic/bd38d796ea6eea27f229216d75d6c202
https://gist.github.com/wildrun0/86a890585857a36c90110cee275c45fd#file-compile-ffmpeg-sh

  


  Almost all are showing same error at the end.
Should I doubt the latest ffmpeg git source ?
https://github.com/FFmpeg/FFmpeg.git

  


  All showing same error on the files :
libavcodec/aacps_tablegen.h
libavcodec/aacps_tablegen_template.c

  


  No solution found on the internet on my searches
It will be highy appreciated if some ffmpeg experts solve this issue.

  


  ./config.h:594: warning: "CONFIG_HARDCODED_TABLES" redefined
 #define CONFIG_HARDCODED_TABLES 1

In file included from libavcodec/aacps_tablegen.c:24:
libavcodec/aacps_tablegen_template.c:25: note: this is the location of the previous definition
 #define CONFIG_HARDCODED_TABLES 0

In file included from libavcodec/aacps_tablegen_template.c:39,
                 from libavcodec/aacps_tablegen.c:24:
libavcodec/aacps_tablegen.h:46:24: error: expected declaration specifiers or ‘...’ before numeric constant
 static DECLARE_ALIGNED(16, float, f20_0_8) [ 8][8][2];
                        ^~
libavcodec/aacps_tablegen.h:46:35: error: unknown type name ‘f20_0_8’
 static DECLARE_ALIGNED(16, float, f20_0_8) [ 8][8][2];
                                   ^~~~~~~
libavcodec/aacps_tablegen.h:47:24: error: expected declaration specifiers or ‘...’ before numeric constant
 static DECLARE_ALIGNED(16, float, f34_0_12)[12][8][2];
                        ^~
libavcodec/aacps_tablegen.h:47:35: error: unknown type name ‘f34_0_12’
 static DECLARE_ALIGNED(16, float, f34_0_12)[12][8][2];
                                   ^~~~~~~~
libavcodec/aacps_tablegen.h:48:24: error: expected declaration specifiers or ‘...’ before numeric constant
 static DECLARE_ALIGNED(16, float, f34_1_8) [ 8][8][2];
                        ^~
libavcodec/aacps_tablegen.h:48:35: error: unknown type name ‘f34_1_8’
 static DECLARE_ALIGNED(16, float, f34_1_8) [ 8][8][2];
                                   ^~~~~~~
libavcodec/aacps_tablegen.h:49:24: error: expected declaration specifiers or ‘...’ before numeric constant
 static DECLARE_ALIGNED(16, float, f34_2_4) [ 4][8][2];
                        ^~
libavcodec/aacps_tablegen.h:49:35: error: unknown type name ‘f34_2_4’
 static DECLARE_ALIGNED(16, float, f34_2_4) [ 4][8][2];
                                   ^~~~~~~
libavcodec/aacps_tablegen.h:50:36: error: expected declaration specifiers or ‘...’ before numeric constant
 static TABLE_CONST DECLARE_ALIGNED(16, float, Q_fract_allpass)[2][50][3][2];
                                    ^~
libavcodec/aacps_tablegen.h:50:47: error: unknown type name ‘Q_fract_allpass’
 static TABLE_CONST DECLARE_ALIGNED(16, float, Q_fract_allpass)[2][50][3][2];
                                               ^~~~~~~~~~~~~~~
libavcodec/aacps_tablegen.h:51:24: error: expected declaration specifiers or ‘...’ before numeric constant
 static DECLARE_ALIGNED(16, float, phi_fract)[2][50][2];
                        ^~
libavcodec/aacps_tablegen.h:51:35: error: unknown type name ‘phi_fract’
 static DECLARE_ALIGNED(16, float, phi_fract)[2][50][2];
                                   ^~~~~~~~~
libavcodec/aacps_tablegen.h: In function ‘ps_tableinit’:
libavcodec/aacps_tablegen.h:187:13: error: ‘Q_fract_allpass’ undeclared (first use in this function)
             Q_fract_allpass[0][k][m][0] = cos(theta);
             ^~~~~~~~~~~~~~~
libavcodec/aacps_tablegen.h:187:13: note: each undeclared identifier is reported only once for each function it appears in
libavcodec/aacps_tablegen.h:191:9: error: ‘phi_fract’ undeclared (first use in this function)
         phi_fract[0][k][0] = cos(theta);
         ^~~~~~~~~
libavcodec/aacps_tablegen.h:210:29: error: ‘f20_0_8’ undeclared (first use in this function)
     make_filters_from_proto(f20_0_8,  g0_Q8,   8);
                             ^~~~~~~
libavcodec/aacps_tablegen.h:211:29: error: ‘f34_0_12’ undeclared (first use in this function)
     make_filters_from_proto(f34_0_12, g0_Q12, 12);
                             ^~~~~~~~
libavcodec/aacps_tablegen.h:212:29: error: ‘f34_1_8’ undeclared (first use in this function)
     make_filters_from_proto(f34_1_8,  g1_Q8,   8);
                             ^~~~~~~
libavcodec/aacps_tablegen.h:213:29: error: ‘f34_2_4’ undeclared (first use in this function)
     make_filters_from_proto(f34_2_4,  g2_Q4,   4);
                             ^~~~~~~
In file included from libavcodec/aacps_tablegen.c:24:
libavcodec/aacps_tablegen_template.c: In function ‘main’:
libavcodec/aacps_tablegen_template.c:88:28: error: ‘f20_0_8’ undeclared (first use in this function)
     ARRAY_RENAME(3d_array)(f20_0_8, 8, 8, 2);
                            ^~~~~~~
libavcodec/aacps_tablegen_template.c:91:28: error: ‘f34_0_12’ undeclared (first use in this function)
     ARRAY_RENAME(3d_array)(f34_0_12, 12, 8, 2);
                            ^~~~~~~~
libavcodec/aacps_tablegen_template.c:94:28: error: ‘f34_1_8’ undeclared (first use in this function)
     ARRAY_RENAME(3d_array)(f34_1_8, 8, 8, 2);
                            ^~~~~~~
libavcodec/aacps_tablegen_template.c:97:28: error: ‘f34_2_4’ undeclared (first use in this function)
     ARRAY_RENAME(3d_array)(f34_2_4, 4, 8, 2);
                            ^~~~~~~
libavcodec/aacps_tablegen_template.c:101:28: error: ‘Q_fract_allpass’ undeclared (first use in this function)
     ARRAY_RENAME(4d_array)(Q_fract_allpass, 2, 50, 3, 2);
                            ^~~~~~~~~~~~~~~
libavcodec/aacps_tablegen_template.c:104:28: error: ‘phi_fract’ undeclared (first use in this function)
     ARRAY_RENAME(3d_array)(phi_fract, 2, 50, 2);
                            ^~~~~~~~~
make: *** [ffbuild/common.mak:201: libavcodec/aacps_tablegen.o] Error 1
make: *** Waiting for unfinished jobs....



  


• Extract part of a video using ffmpeg_extract_subclip - get a clip longer than expected

  4 juin 2020, par rightly0716

  I'm trying to extract a part of a video and find the solution on this page very helpful : 
Extract part of a video using ffmpeg_extract_subclip - black frames

  



  The function write_videofile helps get what I need exactly but a bit slow. The ffmpeg_extract_subclip function is indeed very fast, but somehow generates a weird clip that is slightly longer than what I need. For example, if I use the cmd below (no matter with or without -copyinkf),

  



  ffmpeg -y -ss 218.00 -i input.mp4 -t 7.00 -vcodec copy -acodec copy output.mp4


  



  My output.mp4 will be 9 second long, with the last two seconds frozen with no audio. Anyone saw a similar issue before ? Thanks a lot !

  


• Basic FFmpeg Conversion Error ?

  26 mars 2018, par Sarah Szabo

  I’m trying to convert an .mp4 to a .opus file using ffmpeg. I have a directory on my desktop called Indexing which has a test file called 40.mp4. I’ve tried using the command ffmpeg -i 40.mp4 -b:a 320k 40.opus which always works from a terminal set in the Indexing directory, but trying the same thing using Java always fails :

  NOTE : I’m running on Kubuntu 17.10

  private static final Path INDEXING_PATH = Paths.get("/home/sarah/Desktop/Indexing");

  Process proc = new ProcessBuilder("ffmpeg -i 40.mp4 -b:a 320k 40.opus")
                 .directory(INDEXING_PATH.toFile()).inheritIO().start();

  Yields :

  Exception in thread "main" java.io.IOException: Cannot run program "ffmpeg -i 40.mp4 -b:a 320k 40.opus" (in directory "/home/sarah/Desktop/Indexing"): error=2, No such file or directory
     at java.lang.ProcessBuilder.start(ProcessBuilder.java:1048)

  Here’s a snapshot of the folder :