FFMPEG "バッファキューのオーバーフロー、トリミング"とトリムとatrimフィルタ

Question

私は実際にトリミングし、24 FPSビデオを連結しています。複雑なフィルタを適用すると、「バッファキューのオーバーフロー、削除」エラーが発生します。結果のビデオとオーディオはまだ動作していて正しく動作していません。

ffmpeg version 3.2-1~16.04.york1 Copyright (c) 2000-2016 the FFmpeg developers 
    built with gcc 5.4.1 (Ubuntu 5.4.1-3ubuntu1~ubuntu16.04.1york0) 20161019 
    configuration: --prefix=/usr --extra-version='1~16.04.york1' --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-libtesseract --disable-stripping --disable-decoder=libschroedinger --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libebur128 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-librubberband --enable-libschroedinger --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-opengl --enable-sdl2 --enable-x11grab --enable-libdc1394 --enable-libiec61883 --enable-openal --enable-frei0r --enable-libopencv --enable-libx264 --enable-chromaprint --enable-shared 
    libavutil  55. 34.100/55. 34.100 
    libavcodec  57. 64.100/57. 64.100 
    libavformat 57. 56.100/57. 56.100 
    libavdevice 57. 1.100/57. 1.100 
    libavfilter  6. 65.100/6. 65.100 
    libavresample 3. 1. 0/3. 1. 0 
    libswscale  4. 2.100/4. 2.100 
    libswresample 2. 3.100/2. 3.100 
    libpostproc 54. 1.100/54. 1.100 
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'sample.mp4': 
    Metadata: 
    major_brand  : isom 
    minor_version : 512 
    compatible_brands: isomiso2avc1mp41 
    track   : 0 
    artist   : 
    album   : 
    date   : 0 
    genre   : 
    lyrics   : 
    title   : 
    encoder   : Lavf56.36.100 
    Duration: 00:00:37.90, start: 0.000000, bitrate: 951 kb/s 
    Stream #0:0(und): Video: h264 (Constrained Baseline) (avc1/0x31637661), yuv420p, 640x480 [SAR 1:1 DAR 4:3], 820 kb/s, 24 fps, 24 tbr, 12288 tbn, 48 tbc (default) 
    Metadata: 
     handler_name : VideoHandler 
    Stream #0:1(und): Audio: aac (LC) (mp4a/0x6134706D), 44100 Hz, stereo, fltp, 126 kb/s (default) 
    Metadata: 
     handler_name : SoundHandler 
File 'output.mp4' already exists. Overwrite ? [y/N] y 
[libx264 @ 0x55650097a540] using SAR=1/1 
[libx264 @ 0x55650097a540] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2 
[libx264 @ 0x55650097a540] profile High, level 3.0 
[libx264 @ 0x55650097a540] 264 - core 148 r2643 5c65704 - H.264/MPEG-4 AVC codec - Copyleft 2003-2015 - 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=6 lookahead_threads=1 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=24 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 'output.mp4': 
    Metadata: 
    major_brand  : isom 
    minor_version : 512 
    compatible_brands: isomiso2avc1mp41 
    track   : 0 
    artist   : 
    album   : 
    date   : 0 
    genre   : 
    lyrics   : 
    title   : 
    encoder   : Lavf57.56.100 
    Stream #0:0: Video: h264 (libx264) ([33][0][0][0]/0x0021), yuv420p, 640x480 [SAR 1:1 DAR 4:3], q=-1--1, 24 fps, 12288 tbn, 24 tbc (default) 
    Metadata: 
     encoder   : Lavc57.64.100 libx264 
    Side data: 
     cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1 
    Stream #0:1: Audio: aac (LC) ([64][0][0][0]/0x0040), 44100 Hz, stereo, fltp, 128 kb/s (default) 
    Metadata: 
     encoder   : Lavc57.64.100 aac 
Stream mapping: 
    Stream #0:0 (h264) -> setpts 
    Stream #0:1 (aac) -> asplit 
    concat:out:v0 -> Stream #0:0 (libx264) 
    concat:out:a0 -> Stream #0:1 (aac) 
Press [q] to stop, [?] for help 
[Parsed_concat_33 @ 0x55650097b420] Buffer queue overflow, dropping. 471.5kbits/s speed=4.94x  
    Last message repeated 201 times 
[Parsed_concat_33 @ 0x55650097b420] Buffer queue overflow, dropping. 522.9kbits/s speed=3.89x  
    Last message repeated 1266 times 
[Parsed_concat_33 @ 0x55650097b420] Buffer queue overflow, dropping. 557.0kbits/s speed=3.28x  
    Last message repeated 48 times 
[output stream 0:1 @ 0x556500947e20] 100 buffers queued in output stream 0:1, something may be wrong. 
[Parsed_concat_33 @ 0x55650097b420] Buffer queue overflow, dropping. 718.6kbits/s speed=3.46x  
    Last message repeated 19 times 
[output stream 0:0 @ 0x5565009785c0] 100 buffers queued in output stream 0:0, something may be wrong. 
frame= 1091 fps=117 q=-1.0 Lsize= 2795kB time=00:00:45.51 bitrate= 503.1kbits/s dup=475 drop=0 speed=4.88x  
video:2455kB audio:316kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.861779% 
[libx264 @ 0x55650097a540] frame I:8  Avg QP:19.26 size: 24207 
[libx264 @ 0x55650097a540] frame P:409 Avg QP:21.33 size: 4108 
[libx264 @ 0x55650097a540] frame B:674 Avg QP:27.46 size: 949 
[libx264 @ 0x55650097a540] consecutive B-frames: 10.3% 13.9% 24.5% 51.3% 
[libx264 @ 0x55650097a540] mb I I16..4: 9.9% 57.0% 33.1% 
[libx264 @ 0x55650097a540] mb P I16..4: 3.6% 7.6% 2.9% P16..4: 33.0% 10.6% 3.0% 0.0% 0.0% skip:39.2% 
[libx264 @ 0x55650097a540] mb B I16..4: 0.4% 0.8% 0.4% B16..8: 24.5% 2.6% 0.2% direct: 0.5% skip:70.5% L0:55.5% L1:41.8% BI: 2.7% 
[libx264 @ 0x55650097a540] 8x8 transform intra:53.8% inter:66.7% 
[libx264 @ 0x55650097a540] coded y,uvDC,uvAC intra: 44.6% 50.0% 14.8% inter: 6.2% 7.7% 0.2% 
[libx264 @ 0x55650097a540] i16 v,h,dc,p: 22% 28% 17% 33% 
[libx264 @ 0x55650097a540] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 20% 23% 28% 3% 4% 3% 11% 3% 5% 
[libx264 @ 0x55650097a540] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 26% 26% 16% 2% 5% 3% 16% 3% 3% 
[libx264 @ 0x55650097a540] i8c dc,h,v,p: 60% 22% 13% 6% 
[libx264 @ 0x55650097a540] Weighted P-Frames: Y:0.0% UV:0.0% 
[libx264 @ 0x55650097a540] ref P L0: 72.6% 8.4% 15.1% 3.9% 
[libx264 @ 0x55650097a540] ref B L0: 88.5% 10.7% 0.8% 
[libx264 @ 0x55650097a540] ref B L1: 93.3% 6.7% 
[libx264 @ 0x55650097a540] kb/s:442.30 
[aac @ 0x556500979280] Qavg: 3215.870 

私は他のstackoverflowの質問を試みましたが、どれもうまくいきませんでした。また、トリムのタイミングが混ざり合っていることもあり、部分的だと思います。つまり、開始時刻は0から終了までの間の任意の時間にすることができます。私はそれを厳密に増加させるとうまくいきます。

Answer 1

各ビデオフィルタチェーンの最後にFIFOフィルタを追加します。

すなわち

[v0]trim=start_frame=1:end_frame=142,loop=1:1:1,setpts=N/FRAME_RATE/TB,fifo[0v]; 

必要はないだろうが、あなたにも、オーディオチェーンの最後にafifoを追加することができます。