[FFmpeg-user] Buffer overflow problem in ffmpeg

Wed Apr 9 09:41:53 CEST 2014

I am trying to overlay a video onto another video by using filter_complex.
But it doesn't do overlay properly and says 'Buffer queue overflow'. It
works fine if I remove delay by not using -itsoffset. Please let me know
what can I do to overcome this problem. I am using latest version of ffmpeg.
It is 2.2 N-62296-g4484152.

*Here is the command I am trying. *
ffmpeg -i .Files/1szqpq/hjmuqD/creation/overlaid-video.mp4 -itsoffset
22.952 -i
.Files/1szqpq/hjmuqD/creation/07eda82db409f6c212ffa829287d9c0d_clip.webm
-filter_complex "overlay=x='if(gte(t,34.28),NAN,0)':y=0" -y
.Files/1szqpq/hjmuqD/creation/overlaid-video-2.mp4

*And here is the output log.*

ffmpeg version 2.2-tessus Copyright (c) 2000-2014 the FFmpeg developers
  built on Mar 24 2014 22:25:11 with llvm-gcc 4.2.1 (LLVM build 2336.1.00)
  configuration: --prefix=/Users/tessus/data/ext/ffmpeg/sw --as=yasm
--extra-version=tessus --disable-shared --enable-static --disable-ffplay
--enable-gpl --enable-pthreads --enable-postproc --enable-libmp3lame
--enable-libtheora --enable-libvorbis --enable-libx264 --enable-libxvid
--enable-libspeex --enable-bzlib --enable-zlib --enable-libopencore-amrnb
--enable-libopencore-amrwb --enable-libxavs --enable-version3
--enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvpx
--enable-libgsm --enable-libopus --enable-libmodplug --enable-fontconfig
--enable-libfreetype --enable-libass --enable-libbluray --enable-filters
--enable-runtime-cpudetect
  libavutil      52. 66.100 / 52. 66.100
  libavcodec     55. 52.102 / 55. 52.102
  libavformat    55. 33.100 / 55. 33.100
  libavdevice    55. 10.100 / 55. 10.100
  libavfilter     4.  2.100 /  4.  2.100
  libswscale      2.  5.102 /  2.  5.102
  libswresample   0. 18.100 /  0. 18.100
  libpostproc    52.  3.100 / 52.  3.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from
'.Files/1szqpq/hjmuqD/creation/overlaid-video.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    encoder         : Lavf55.33.100
  Duration: 00:00:44.91, start: 0.000000, bitrate: 443 kb/s
    Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p,
1280x720 [SAR 1:1 DAR 16:9], 392 kb/s, 29.97 fps, 29.97 tbr, 11988 tbn,
59.94 tbc (default)
    Metadata:
      handler_name    : VideoHandler
    Stream #0:1(und): Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo,
fltp, 128 kb/s (default)
    Metadata:
      handler_name    : SoundHandler
Input #1, matroska,webm, from
'.Files/1szqpq/hjmuqD/creation/07eda82db409f6c212ffa829287d9c0d_clip.webm':
  Metadata:
    encoder         : libebml v1.2.0 + libmatroska v1.1.0
    creation_time   : 2014-04-09 06:16:15
  Duration: 00:00:11.33, start: 0.000000, bitrate: 996 kb/s
    Stream #1:0: Video: vp8, yuv420p, 274x486, SAR 1:1 DAR 137:243, 30.05
fps, 30.05 tbr, 1k tbn, 1k tbc (default)
    Stream #1:1: Audio: vorbis, 48000 Hz, stereo, fltp (default)
[libx264 @ 0x104000600] using SAR=1/1
[libx264 @ 0x104000600] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2
AVX
[libx264 @ 0x104000600] profile High, level 3.1
[libx264 @ 0x104000600] 264 - core 142 - H.264/MPEG-4 AVC codec - Copyleft
2003-2014 - http://www.videolan.org/x264.html - options: cabac=1 ref=3
deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00
mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11
fast_pskip=1 chroma_qp_offset=-2 threads=12 lookahead_threads=2
sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0
constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1
weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40
intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0
qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
Output #0, mp4, to '.Files/1szqpq/hjmuqD/creation/overlaid-video-2.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    encoder         : Lavf55.33.100
    Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p,
1280x720 [SAR 1:1 DAR 16:9], q=-1--1, 11988 tbn, 29.97 tbc (default)
    Stream #0:1(und): Audio: aac (libvo_aacenc) ([64][0][0][0] / 0x0040),
44100 Hz, stereo, s16, 128 kb/s (default)
    Metadata:
      handler_name    : SoundHandler
Stream mapping:
  Stream #0:0 (h264) -> overlay:main (graph 0)
  Stream #1:0 (vp8) -> overlay:overlay (graph 0)
  overlay (graph 0) -> Stream #0:0 (libx264)
  Stream #0:1 -> #0:1 (aac -> libvo_aacenc)
Press [q] to stop, [?] for help
[Parsed_overlay_0 @ 0x103800000] [framesync @ 0x1038000e8] Buffer queue
overflow, dropping.
    Last message repeated 624 times
frame= 1345 fps=181 q=-1.0 Lsize=    2130kB time=00:00:44.81 bitrate=
389.4kbits/s dup=624 drop=0
video:1851kB audio:251kB subtitle:0 data:0 global headers:0kB muxing
overhead 1.348262%
[libx264 @ 0x104000600] frame I:8     Avg QP:13.93  size: 30628
[libx264 @ 0x104000600] frame P:402   Avg QP:17.93  size:  2802
[libx264 @ 0x104000600] frame B:935   Avg QP:20.63  size:   560
[libx264 @ 0x104000600] consecutive B-frames:  2.4% 14.4%  1.1% 82.1%
[libx264 @ 0x104000600] mb I  I16..4:  9.0% 73.4% 17.6%
[libx264 @ 0x104000600] mb P  I16..4:  1.7%  1.7%  0.3%  P16..4: 10.9%
 2.3%  0.9%  0.0%  0.0%    skip:82.2%
[libx264 @ 0x104000600] mb B  I16..4:  0.1%  0.1%  0.0%  B16..8:  7.6%
 0.4%  0.0%  direct: 0.1%  skip:91.7%  L0:46.5% L1:50.8% BI: 2.8%
[libx264 @ 0x104000600] 8x8 transform intra:53.1% inter:78.0%
[libx264 @ 0x104000600] coded y,uvDC,uvAC intra: 31.4% 36.8% 7.9% inter:
1.1% 2.3% 0.0%
[libx264 @ 0x104000600] i16 v,h,dc,p: 31% 27%  7% 35%
[libx264 @ 0x104000600] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 41% 20% 23%  3%  3%
 3%  3%  3%  3%
[libx264 @ 0x104000600] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 39% 25% 14%  3%  4%
 4%  4%  3%  3%
[libx264 @ 0x104000600] i8c dc,h,v,p: 74% 12% 11%  2%
[libx264 @ 0x104000600] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 0x104000600] ref P L0: 68.4%  8.7% 17.1%  5.8%
[libx264 @ 0x104000600] ref B L0: 85.5% 13.7%  0.8%
[libx264 @ 0x104000600] ref B L1: 97.5%  2.5%
[libx264 @ 0x104000600] kb/s:337.78