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• ffmpeg fails with "More than 1k frames duplicated" when merging with xfade

  1er mai 2021, par PadawanQ

  When I try to merge 8 or more video clips with the same codec (generated by ffmpeg in a previous step), I get a More than 1000 frames duplicated warning and the resulting output is not merged correctly. This doesn't happen with 7 video clips.

  


  I tried removing the 8th clip to check if there is a problem with that clip, but it happens the same. Also reordering the clips with no success.

  


  The command I use is :

  


  ffmpeg -i scenes/step-000.mp4 -i scenes/step-001.mp4 -i scenes/step-002.mp4 -i scenes/step-003.mp4 -i scenes/step-004.mp4 -i scenes/step-005.mp4 -i scenes/step-008.mp4 -i scenes/step-009.mp4 -filter_complex_script temp/2021-03-17-14-51-13-6.txt  -y -map "[video]" -map "[audio]" -pix_fmt yuv420p -movflags +faststart output.mp4


  


  The content of the filter_complex_script is :

  


  [0][1] xfade=transition=fade:duration=2:offset=2.48 [vtmp1]; [vtmp1][2] xfade=transition=fade:duration=2:offset=12.56 [vtmp2]; [vtmp2][3] xfade=transition=fade:duration=2:offset=100.58 [vtmp3]; [vtmp3][4] xfade=transition=fade:duration=2:offset=167.60 [vtmp4]; [vtmp4][5] xfade=transition=fade:duration=2:offset=222.62 [vtmp5]; [vtmp5][6] xfade=transition=fade:duration=2:offset=232.70 [vtmp6]; [vtmp6][7] xfade=transition=fade:duration=2:offset=282.72 [video]; [0:a][1:a] acrossfade=d=2:c1=tri:c2=tri [atmp1]; [atmp1][2:a] acrossfade=d=2:c1=tri:c2=tri [atmp2]; [atmp2][3:a] acrossfade=d=2:c1=tri:c2=tri [atmp3]; [atmp3][4:a] acrossfade=d=2:c1=tri:c2=tri [atmp4]; [atmp4][5:a] acrossfade=d=2:c1=tri:c2=tri [atmp5]; [atmp5][6:a] acrossfade=d=2:c1=tri:c2=tri [atmp6]; [atmp6][7:a] acrossfade=d=2:c1=tri:c2=tri [audio]


  


  FFMPEG version 4.3.2-tessus

  


• Revert "avcodec : add FF_CODEC_CAP_INIT_CLEANUP for all codecs which use ff_mpv_common...

  24 décembre 2020, par Andreas Rheinhardt

  Revert "avcodec : add FF_CODEC_CAP_INIT_CLEANUP for all codecs which use ff_mpv_common_init()"
  This mostly reverts commit 4b2863ff01b1fe93d9a518523c9098d17a9d8c6f.
  
  Said commit removed the freeing code from ff_mpv_common_init(),
  
  ff_mpv_common_frame_size_change() and ff_mpeg_framesize_alloc() and
  
  instead added the FF_CODEC_CAP_INIT_CLEANUP to several codecs that use
  
  ff_mpv_common_init(). This introduced several bugs :
  a) Several decoders using ff_mpv_common_init() in their init function were
  
  forgotten : This affected FLV, Intel H.263, RealVideo 3.0 and V4.0 as well as
  
  VC-1/WMV3.
  
  b) ff_mpv_common_init() is not only called from the init function of
  
  codecs, it is also called from AVCodec.decode functions. If an error
  
  happens after an allocation has succeeded, it can lead to memleaks ;
  
  furthermore, it is now possible for the MpegEncContext to be marked as
  
  initialized even when ff_mpv_common_init() returns an error and this can
  
  lead to segfaults because decoders that call ff_mpv_common_init() when
  
  decoding a frame can mistakenly think that the MpegEncContext has been
  
  properly initialized. This can e.g. happen with H.261 or MPEG-4.
  
  c) Removing code for freeing from ff_mpeg_framesize_alloc() (which can't
  
  be called from any init function) can lead to segfaults because the
  
  check for whether it needs to allocate consists of checking whether the
  
  first of the buffers allocated there has been allocated. This part has
  
  already been fixed in 76cea1d2ce3f23e8131c8664086a1daf873ed694.
  
  d) ff_mpv_common_frame_size_change() can also not be reached from any
  
  AVCodec.init function ; yet the changes can e.g. lead to segfaults with
  
  decoders using ff_h263_decode_frame() upon allocation failure, because
  
  the MpegEncContext will upon return be flagged as both initialized and
  
  not in need of reinitialization (granted, the fact that
  
  ff_h263_decode_frame() clears context_reinit before the context has been
  
  reinited is a bug in itself). With the earlier version, the context
  
  would be cleaned upon failure and it would be attempted to initialize
  
  the context again in the next call to ff_h263_decode_frame().
  While a) could be fixed by adding the missing FF_CODEC_CAP_INIT_CLEANUP,
  
  keeping the current approach would entail adding cleanup code to several
  
  other places because of b). Therefore ff_mpv_common_init() is again made
  
  to clean up after itself ; the changes to the wmv2 decoder and the SVQ1
  
  encoder have not been reverted : The former fixed a memleak, the latter
  
  allowed to remove cleanup code.
  Fixes : double free
  
  Fixes : ff_free_picture_tables.mp4
  
  Fixes : ff_mpeg_update_thread_context.mp4
  
  Fixes : decode_colskip.mp4
  
  Fixes : memset.mp4
  Reviewed-by : Michael Niedermayer <michael@niedermayer.cc>
  
  Signed-off-by : Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
  

  • [DH] libavcodec/h261dec.c
  • [DH] libavcodec/h263dec.c
  • [DH] libavcodec/mpeg12dec.c
  • [DH] libavcodec/mpeg4videodec.c
  • [DH] libavcodec/mpegvideo.c
  • [DH] libavcodec/msmpeg4dec.c
  • [DH] libavcodec/rv10.c

• FFmpeg giving a wierd "Permission denied" error (Digitalocean VPS Ubuntu 18.04)

  10 mai 2021, par DJ Danny

  I've set up a VPS server on Digitalocean. Installed Ubuntu 18.04, LAMP, etc.
Finally, I installed ffmpeg. It is working fine from terminal but when I try to execute it through php it gives a weird "Permission denied" error :

  


  Here is some information :

  
root@vl :/# whereis ffmpeg
  
ffmpeg : /usr/local/bin/ffmpeg
  
root@vl :/# whereis ffprobe
  
ffprobe : /usr/local/bin/ffprobe
  

  


  root@vl :/# ffmpeg -version
  
ffmpeg version N-102461-g8649f5dca6 Copyright (c) 2000-2021 the FFmpeg developers
built with gcc 7 (Ubuntu 7.5.0-3ubuntu1 18.04)
configuration : —prefix=/usr/local/ffmpeg_build —pkg-config-flags=—static —extra-cflags=-I/usr/local/ffmpeg_build/include —extra-ldflags=-L/usr/local/ffmpeg_build/lib —extra-libs='-lpthread -lm' —ld=g++ —bindir=/usr/local/bin —enable-gpl —enable-gnutls —enable-libaom —enable-libass —enable-libfdk-aac —enable-libfreetype —enable-libmp3lame —enable-libopus —enable-libsvtav1 —enable-libvorbis —enable-libvpx —enable-libx264 —enable-libx265 —enable-nonfree
libavutil 57. 0.100 / 57. 0.100
libavcodec 59. 1.100 / 59. 1.100
libavformat 59. 0.101 / 59. 0.101
libavdevice 59. 0.100 / 59. 0.100
libavfilter 8. 0.101 / 8. 0.101
libswscale 6. 0.100 / 6. 0.100
libswresample 4. 0.100 / 4. 0.100
libpostproc 56. 0.100 / 56. 0.100


  


  My php file :
  

  

echo shell_exec("ffmpeg -i mj.gif -profile:v baseline -pix_fmt yuv420p -vf scale=600 :-2 output.mp4 2>&1")
  
 ?>

  


  The ERROR ! :
  
ffmpeg version N-102461-g8649f5dca6 Copyright (c) 2000-2021 the FFmpeg developers built with gcc 7 (Ubuntu 7.5.0-3ubuntu1 18.04) configuration : —prefix=/usr/local/ffmpeg_build —pkg-config-flags=—static —extra-cflags=-I/usr/local/ffmpeg_build/include —extra-ldflags=-L/usr/local/ffmpeg_build/lib —extra-libs='-lpthread -lm' —ld=g++ —bindir=/usr/local/bin —enable-gpl —enable-gnutls —enable-libaom —enable-libass —enable-libfdk-aac —enable-libfreetype —enable-libmp3lame —enable-libopus —enable-libsvtav1 —enable-libvorbis —enable-libvpx —enable-libx264 —enable-libx265 —enable-nonfree libavutil 57. 0.100 / 57. 0.100 libavcodec 59. 1.100 / 59. 1.100 libavformat 59. 0.101 / 59. 0.101 libavdevice 59. 0.100 / 59. 0.100 libavfilter 8. 0.101 / 8. 0.101 libswscale 6. 0.100 / 6. 0.100 libswresample 4. 0.100 / 4. 0.100 libpostproc 56. 0.100 / 56. 0.100 Input #0, gif, from 'mj.gif' : Duration : 00:00:01.60, start : 0.000000, bitrate : 22863 kb/s Stream #0:0 : Video : gif, bgra, 1400x1050, 10 fps, 10 tbr, 100 tbn output.mp4 : Permission denied


  
From the past 24 hours I've tried installing ffmpeg in different ways (compiling & apt install), I've also tried changing the permission but still I'm stuck with this error.
  
Any help would be highly appreciated !
  
Thanks