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• How to match precompiled static library's debugging symbols to source code with Xcode 5 ?

  21 septembre 2013, par Chris Ballinger

  I have to compile FFmpeg for iOS using an external build script, but when I am debugging I see assembler if I delve too deep into libavformat library functions :

  0x109a73:  cmpl   $0, 1192(%ebp)
  
  0x109a7a:  jns    0x109a86                  ; mov_write_header + 198 at movenc.c:3539
  
  0x109a7c:  movl   $1, 1192(%ebp)
  
  0x109a86:  movl   16(%ebp), %eax
  
  0x109a89:  cmpl   $0, 84(%eax)
  
  0x109a8d:  movl   %edx, %ecx
  
  0x109a8f:  jne    0x109ad9                  ; mov_write_header + 281 at movenc.c:3548
  
  0x109a91:  testb  $2, 48(%ecx)
  
  0x109a95:  jne    0x109ac1                  ; mov_write_header + 257 at movenc.c:3541

  There are clear debugging symbols left behind which would lead me to believe that there should be some way to tell Xcode the location of this source code to allow easier debugging.

  Is this even possible ?

  edit : I found a related question here No symbols/source for external library in Xcode 4

  So when I run xcrun dwarfdump libavformat.a | grep "\.c" I get a bunch of results like this :

  AT_decl_file( "libavformat/movenc.c" )

  So I tried putting the relevant source files in folders relative to both the .a file and my .xcodeproj file, but neither of those methods worked. Full source code is available here : https://github.com/openwatch/livestreamer-ios

  edit2 : I found another question about how to set the source mapping for lldb but I'm not quite sure what to do... LLDB equivalent of gdb "directory" command for specifying source search path ?

  It seems like I might need to do

  (lldb) settings set target.source-map libavformat/movenc.c /path/to/libavformat/movenc.c 

  for every file I need ?

• Input link in1:v0 parameters (size XXX, SAR XXX) do not match the corresponding output link in0:v0 parameters (XXX, SAR 1:1) [duplicate]

  1er mars 2020, par theapache64

  I’ve two files, a mp4 and a mp3 file. I want to add a 3 seconds intro screen with title Welcome and black background to the head of the video with the mp3 as background. So here’s what I wrote.

  ffmpeg \
  
      -i input.mp4 \
  
      -i bgm.mp3 \
  
      -f lavfi -i color=c=black:s="1280"x"544":d=3.0 \
  
      -filter_complex \
  
          "[2:v]
  
    drawtext=
  
      fontsize=30
  
      :fontcolor=white
  
      :x=(w-text_w)/2
  
      :y=(h-text_h)/2
  
      :text='WELCOME',
  
      geq=0:128:128
  
  [introVideo];
  
  
  
  [1:a]
  
      atrim=0.0:3.0
  
  [introAudio];
  
  
  
  [introVideo][introAudio][0:v][0:a]concat=n=2:v=1:a=1" -preset superfast output.mp4

  but am getting below error when I try to execute the command

  [Parsed_concat_3 @ 0x55c02756fa00] Input link in1:v0 parameters (size 1280x544, SAR 1299:1280) do not match the corresponding output link in0:v0 parameters (1280x544, SAR 1:1)
  
  [Parsed_concat_3 @ 0x55c02756fa00] Failed to configure output pad on Parsed_concat_3
  
  Error reinitializing filters!
  
  Failed to inject frame into filter network: Invalid argument
  
  Error while processing the decoded data for stream #0:1
  
  Conversion failed!

  Any help will be highly appreciated.

  PS : I am a beginner in video processing and ffmpeg.

• tests : Renamed pix_fmts wording in ffv1 test target name to match pix_fmt parameter.

  31 août 2015, par Peter B

  tests : Renamed pix_fmts wording in ffv1 test target name to match pix_fmt parameter.
  Signed-off-by : Michael Niedermayer <michael@niedermayer.cc>
  

  • [DH] tests/fate/vcodec.mak
  • [DH] tests/ref/vsynth/vsynth1-ffv1-v0
  • [DH] tests/ref/vsynth/vsynth1-ffv1-v3-bgr0
  • [DH] tests/ref/vsynth/vsynth1-ffv1-v3-yuv420p
  • [DH] tests/ref/vsynth/vsynth1-ffv1-v3-yuv422p10
  • [DH] tests/ref/vsynth/vsynth1-ffv1-v3-yuv444p16
  • [DH] tests/ref/vsynth/vsynth1-ffv1.0
  • [DH] tests/ref/vsynth/vsynth1-ffv1.3-420
  • [DH] tests/ref/vsynth/vsynth1-ffv1.3-422p10
  • [DH] tests/ref/vsynth/vsynth1-ffv1.3-444p16
  • [DH] tests/ref/vsynth/vsynth1-ffv1.3-bgr
  • [DH] tests/ref/vsynth/vsynth2-ffv1-v0
  • [DH] tests/ref/vsynth/vsynth2-ffv1-v3-bgr0
  • [DH] tests/ref/vsynth/vsynth2-ffv1-v3-yuv420p
  • [DH] tests/ref/vsynth/vsynth2-ffv1-v3-yuv422p10
  • [DH] tests/ref/vsynth/vsynth2-ffv1-v3-yuv444p16
  • [DH] tests/ref/vsynth/vsynth2-ffv1.0
  • [DH] tests/ref/vsynth/vsynth2-ffv1.3-420
  • [DH] tests/ref/vsynth/vsynth2-ffv1.3-422p10
  • [DH] tests/ref/vsynth/vsynth2-ffv1.3-444p16
  • [DH] tests/ref/vsynth/vsynth2-ffv1.3-bgr
  • [DH] tests/ref/vsynth/vsynth3-ffv1-v0
  • [DH] tests/ref/vsynth/vsynth3-ffv1-v3-bgr0
  • [DH] tests/ref/vsynth/vsynth3-ffv1-v3-yuv420p
  • [DH] tests/ref/vsynth/vsynth3-ffv1-v3-yuv422p10
  • [DH] tests/ref/vsynth/vsynth3-ffv1-v3-yuv444p16
  • [DH] tests/ref/vsynth/vsynth3-ffv1.0
  • [DH] tests/ref/vsynth/vsynth3-ffv1.3-420
  • [DH] tests/ref/vsynth/vsynth3-ffv1.3-422p10
  • [DH] tests/ref/vsynth/vsynth3-ffv1.3-444p16
  • [DH] tests/ref/vsynth/vsynth3-ffv1.3-bgr
  • [DH] tests/ref/vsynth/vsynth_lena-ffv1-v0
  • [DH] tests/ref/vsynth/vsynth_lena-ffv1-v3-bgr0
  • [DH] tests/ref/vsynth/vsynth_lena-ffv1-v3-yuv420
  • [DH] tests/ref/vsynth/vsynth_lena-ffv1-v3-yuv420p
  • [DH] tests/ref/vsynth/vsynth_lena-ffv1-v3-yuv422p10
  • [DH] tests/ref/vsynth/vsynth_lena-ffv1-v3-yuv444p16