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• ffmpeg not finding audio streams ?

  24 septembre 2013, par Jim Miller

  I'm doing some video conversion with ffmpeg v. N-54271-g7f866c1 (a fresh pull from the git sources in late June 2013) on Fedora 19. One of the things I want to do is to concatenate two videos and then convert the result to an mp4. The following code is working well for me :

  ffmpeg -i video_a.mov -i video_b.mov -acodec libfaac -vcodec libx264 
  
       -preset fast -crf 22  -s 940x528 -pix_fmt yuv420p 
  
       -filter_complex '[0:1] [0:0] [1:1] [1:0]  concat=n=2:v=1:a=1 [v] [a]' 
  
       -map '[v]' -map '[a]' output.mp4

  except for a couple of older hunks of test video I've been using. On those, ffmpeg isn't finding the audio stream, and so the above call dies with ffmpeg complaining that Stream specifier ':1' in filtergraph description [0:1][0:0][1:1][1:0] concat=n=2:v=1:a=1 [v] [a] matches no streams. The catch, of course, is that there is an audio stream in the video ; it's just not getting found.

  When ffmpeg starts, I get a description of the input like so :

  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/var/www/priv/videorising7/raw_take_video/v2261-MTQxMzgwMDM4NzAx.mov':
  
    Metadata:
  
      major_brand     : qt  
  
      minor_version   : 537199360
  
      compatible_brands: qt  
  
      creation_time   : 2011-10-13 16:08:18
  
    Duration: 00:00:25.52, start: 0.000000, bitrate: 49 kb/s
  
      Stream #0:0(eng): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 608x342, 47 kb/s, 10.03 fps, 10 tbr, 1k tbn, 2k tbc
  
      Metadata:
  
        creation_time   : 2011-10-13 16:08:18
  
        handler_name    : Apple Alias Data Handler

  I suppose the video might just be so old (2006 ?) that I should be lucky that it plays at all. However, I'm able to run these videos through some other ffmpeg jobs (converting from .mov to .mp4, for instance), but those don't require explicitly referencing the audio and video tracks. Any insights out there ?

• FFMpeg is slow on Android [duplicate]

  28 juin 2017, par Oleg Filimonov

  This question already has an answer here :

  • Precompiled FFmpeg for android versus building FFmpeg using android NDK
    
    2 answers
    
  • Fast Video Compression on Android
    
    2 answers
    

  I’m using this library : https://github.com/WritingMinds/ffmpeg-android

  Executing this command :

  ffmpeg -y -i video.mp4 -ignore_loop 0 -i overlay.gif -filter_complex `
  
  >> "[0][1]overlay=x=mod((1080/4 + sin(t)*1080/4)\,1920):y=mod(t*300\,1080):shortest=1[res];`
  
  >> [res][1]overlay=x=mod((200*1 + 1080/4 - sin(2*t)*1080/4)\,1920):y=mod(100 + t*300\,1080):shortest=1[res];`
  
  >> [res][1]overlay=x=mod((200*2 + 1080/4 - sin(-90 + t/2)*1080/4)\,1920):y=mod(150 + t*250\,1080):shortest=1[res];`
  
  >> [res][1]overlay=x=mod((200*3 + 1080/4 - sin(90 + 3*t)*1080/4)\,1920):y=mod(200 + t*100\,1080):shortest=1[res];`
  
  >> [res][1]overlay=x=mod((200*4 + 1080/4 - sin(180 + t)*1080/4)\,1920):y=mod(t*250\,1080):shortest=1[res];`
  
  >> [res][1]overlay=x=mod((200*5 + 1080/4 - sin(-180 + t)*1080/4)\,1920):y=mod(t*100\,1080):shortest=1[res];`
  
  >> [res][1]overlay=x=mod((200*6 + 1080/4 - sin(2*t)*1080/4)\,1920):y=100 + mod(100 + t*300\,1080):shortest=1[res]`
  
  >> " -map "[res]" -preset ultrafast out.mp4

  (Basically add a bunch of animated overlays to the video)

  On PC this command takes about a second to execute (render speed is about 278 fps). But on Android device with Snapdragon 821 it takes about 10 seconds (about 30 fps).

  The curious thing is that whenever command is executing on PC, CPU load is around 90%, but on Android it’s less than 1% (see screenshot : initial spike is UI stuff plus loading binaries, afterwards ffmpeg was executing until 10 second mark)

  

  I tried executing the same command, but writing to /dev/null
  instead of the file :

  ffmpeg -y -i video.mp4 -ignore_loop 0 -i overlay.gif -filter_complex `
  
  >> "[0][1]overlay=x=mod((1080/4 + sin(t)*1080/4)\,1920):y=mod(t*300\,1080):shortest=1[res];`
  
  >> [res][1]overlay=x=mod((200*1 + 1080/4 - sin(2*t)*1080/4)\,1920):y=mod(100 + t*300\,1080):shortest=1[res];`
  
  >> [res][1]overlay=x=mod((200*2 + 1080/4 - sin(-90 + t/2)*1080/4)\,1920):y=mod(150 + t*250\,1080):shortest=1[res];`
  
  >> [res][1]overlay=x=mod((200*3 + 1080/4 - sin(90 + 3*t)*1080/4)\,1920):y=mod(200 + t*100\,1080):shortest=1[res];`
  
  >> [res][1]overlay=x=mod((200*4 + 1080/4 - sin(180 + t)*1080/4)\,1920):y=mod(t*250\,1080):shortest=1[res];`
  
  >> [res][1]overlay=x=mod((200*5 + 1080/4 - sin(-180 + t)*1080/4)\,1920):y=mod(t*100\,1080):shortest=1[res];`
  
  >> [res][1]overlay=x=mod((200*6 + 1080/4 - sin(2*t)*1080/4)\,1920):y=100 + mod(100 + t*300\,1080):shortest=1[res]`
  
  >> " -map "[res]" -preset ultrafast -f null /dev/null

  This reduced time by 3 seconds.

  I also tried replacing gif overlay with png overlay, but speed didn’t improve significantly.

  Here’s log of the command execution on Android :

  ffmpeg version n3.0.1 Copyright (c) 2000-2016 the FFmpeg developers
  
    built with gcc 4.8 (GCC)
  
    configuration: --target-os=linux --cross-prefix=/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/bin/arm-linux-androideabi- --arch=arm --cpu=cortex-a8 --enable-runtime-cpudetect --sysroot=/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/sysroot --enable-pic --enable-libx264 --enable-libass --enable-libfreetype --enable-libfribidi --enable-libmp3lame --enable-fontconfig --enable-pthreads --disable-debug --disable-ffserver --enable-version3 --enable-hardcoded-tables --disable-ffplay --disable-ffprobe --enable-gpl --enable-yasm --disable-doc --disable-shared --enable-static --pkg-config=/home/vagrant/SourceCode/ffmpeg-android/ffmpeg-pkg-config --prefix=/home/vagrant/SourceCode/ffmpeg-android/build/armeabi-v7a --extra-cflags='-I/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/include -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all' --extra-ldflags='-L/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/lib -Wl,-z,relro -Wl,-z,now -pie' --extra-libs='-lpng -lexpat -lm' --extra-cxxflags=
  
    libavutil      55. 17.103 / 55. 17.103
  
    libavcodec     57. 24.102 / 57. 24.102
  
    libavformat    57. 25.100 / 57. 25.100
  
    libavdevice    57.  0.101 / 57.  0.101
  
    libavfilter     6. 31.100 /  6. 31.100
  
    libswscale      4.  0.100 /  4.  0.100
  
    libswresample   2.  0.101 /  2.  0.101
  
    libpostproc    54.  0.100 / 54.  0.100
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/data/user/0/com.example.user.proofofconcept/files/in_10s.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      creation_time   : 2017-06-27 18:07:54
  
    Duration: 00:00:10.47, start: 0.000000, bitrate: 14043 kb/s
  
      Stream #0:0(eng): Video: h264 (Baseline) (avc1 / 0x31637661), yuvj420p(pc, smpte170m), 1280x720, 13971 kb/s, 29.86 fps, 30.01 tbr, 90k tbn, 180k tbc (default)
  
      Metadata:
  
        creation_time   : 2017-06-27 18:07:53
  
        handler_name    : VideoHandle
  
      Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 96 kb/s (default)
  
      Metadata:
  
        creation_time   : 2017-06-27 18:07:54
  
        handler_name    : SoundHandle
  
  Input #1, gif, from '/data/user/0/com.example.user.proofofconcept/files/overlay.gif':
  
    Duration: N/A, bitrate: N/A
  
      Stream #1:0: Video: gif, bgra, 130x98, 6.17 fps, 4.92 tbr, 100 tbn, 100 tbc
  
  [swscaler @ 0xeddb3000] deprecated pixel format used, make sure you did set range correctly
  
  [libx264 @ 0xee1fdc00] using cpu capabilities: none!
  
  [libx264 @ 0xee1fdc00] profile Constrained Baseline, level 3.2
  
  [libx264 @ 0xee1fdc00] 264 - core 148 - H.264/MPEG-4 AVC codec - Copyleft 2003-2015 - http://www.videolan.org/x264.html - options: cabac=0 ref=1 deblock=0:0:0 analyse=0:0 me=dia subme=0 psy=1 psy_rd=1.00:0.00 mixed_ref=0 me_range=16 chroma_me=1 trellis=0 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=0 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=0 weightp=0 keyint=250 keyint_min=25 scenecut=0 intra_refresh=0 rc=crf mbtree=0 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=0
  
  Output #0, mp4, to '/storage/emulated/0/temp/out.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf57.25.100
  
      Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 1280x720, q=-1--1, 30.01 fps, 90k tbn, 30.01 tbc (default)
  
      Metadata:
  
        encoder         : Lavc57.24.102 libx264
  
      Side data:
  
        unknown side data type 10 (24 bytes)
  
  Stream mapping:
  
    Stream #0:0 (h264) -> overlay:main
  
    Stream #1:0 (gif) -> overlay:overlay
  
    Stream #1:0 (gif) -> overlay:overlay
  
    Stream #1:0 (gif) -> overlay:overlay
  
    Stream #1:0 (gif) -> overlay:overlay
  
    Stream #1:0 (gif) -> overlay:overlay
  
    Stream #1:0 (gif) -> overlay:overlay
  
    Stream #1:0 (gif) -> overlay:overlay
  
    overlay -> Stream #0:0 (libx264)
  
  Press [q] to stop, [?] for help
  
  frame=   16 fps=0.0 q=24.0 size=     227kB time=00:00:00.29 bitrate=6210.2kbits/s dup=2 drop=0 speed=0.56x    
  
  frame=   29 fps= 28 q=24.0 size=     451kB time=00:00:00.73 bitrate=5042.1kbits/s dup=2 drop=0 speed=0.707x    
  
  frame=   40 fps= 26 q=24.0 size=     637kB time=00:00:01.09 bitrate=4744.5kbits/s dup=2 drop=0 speed=0.71x    
  
  frame=   57 fps= 28 q=24.0 size=     903kB time=00:00:01.66 bitrate=4441.3kbits/s dup=2 drop=0 speed=0.812x    
  
  frame=   75 fps= 29 q=24.0 size=    1186kB time=00:00:02.26 bitrate=4288.0kbits/s dup=2 drop=0 speed=0.885x    
  
  frame=   94 fps= 31 q=24.0 size=    1456kB time=00:00:02.89 bitrate=4113.4kbits/s dup=2 drop=0 speed=0.945x    
  
  frame=  113 fps= 32 q=25.0 size=    1780kB time=00:00:03.53 bitrate=4127.3kbits/s dup=2 drop=0 speed=0.985x    
  
  frame=  131 fps= 32 q=24.0 size=    2101kB time=00:00:04.13 bitrate=4165.9kbits/s dup=2 drop=0 speed=1.01x    
  
  frame=  150 fps= 33 q=24.0 size=    2461kB time=00:00:04.76 bitrate=4231.2kbits/s dup=2 drop=0 speed=1.03x    
  
  frame=  165 fps= 32 q=24.0 size=    2721kB time=00:00:05.26 bitrate=4234.1kbits/s dup=2 drop=0 speed=1.03x    
  
  frame=  185 fps= 33 q=24.0 size=    3028kB time=00:00:05.93 bitrate=4182.4kbits/s dup=2 drop=0 speed=1.05x    
  
  frame=  205 fps= 33 q=24.0 size=    3329kB time=00:00:06.59 bitrate=4133.3kbits/s dup=2 drop=0 speed=1.07x    
  
  frame=  224 fps= 34 q=24.0 size=    3610kB time=00:00:07.23 bitrate=4089.7kbits/s dup=2 drop=0 speed=1.08x    
  
  frame=  243 fps= 34 q=24.0 size=    3901kB time=00:00:07.86 bitrate=4063.3kbits/s dup=2 drop=0 speed=1.09x    
  
  frame=  264 fps= 34 q=24.0 size=    4297kB time=00:00:08.56 bitrate=4110.6kbits/s dup=2 drop=0 speed=1.11x    
  
  frame=  284 fps= 35 q=24.0 size=    4601kB time=00:00:09.23 bitrate=4083.5kbits/s dup=2 drop=0 speed=1.12x    
  
  frame=  304 fps= 35 q=24.0 size=    4886kB time=00:00:09.89 bitrate=4044.4kbits/s dup=2 drop=0 speed=1.14x    
  
  frame=  314 fps= 35 q=-1.0 Lsize=    5138kB time=00:00:10.46 bitrate=4022.4kbits/s dup=2 drop=0 speed=1.16x    
  
  video:5135kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.040961%
  
  [libx264 @ 0xee1fdc00] frame I:2     Avg QP:20.50  size: 84700
  
  [libx264 @ 0xee1fdc00] frame P:312   Avg QP:24.06  size: 16310
  
  [libx264 @ 0xee1fdc00] mb I  I16..4: 100.0%  0.0%  0.0%
  
  [libx264 @ 0xee1fdc00] mb P  I16..4:  7.7%  0.0%  0.0%  P16..4: 54.9%  0.0%  0.0%  0.0%  0.0%    skip:37.4%
  
  [libx264 @ 0xee1fdc00] coded y,uvDC,uvAC intra: 62.7% 22.9% 3.4% inter: 26.1% 8.4% 0.9%
  
  [libx264 @ 0xee1fdc00] i16 v,h,dc,p: 13% 14% 59% 13%
  
  [libx264 @ 0xee1fdc00] i8c dc,h,v,p: 47% 24% 22%  6%
  
  [libx264 @ 0xee1fdc00] kb/s:4020.26
  
   Success
  
  time used: 9843

  So what could be the reason of such low CPU load ?

• ffmpeg got stuck while trying to crossfade merge two videos

  30 juin 2017, par Jeflopo

  I’m trying to do a crossfade merge (1s) between two videos. An intro (39secs duration) video with the main video. When I executed the command it started working without throwing errors but at some frame ffmpeg gets stuck.

  I read a lot of q/a here in stackoverflow, and the official docs but I can’t solve this so :

  This is the command :

  ffmpeg -i "inputs/intro.mp4" -i "inputs/240p.mp4" -an -filter_complex \
  
      "[0:v]trim=start=0:end=38,setpts=PTS-STARTPTS[firstclip]; \
  
      [0:v]trim=start=38:end=39,setpts=PTS-STARTPTS[fadeoutsrc]; \
  
      [1:v]trim=start=1,setpts=PTS-STARTPTS[secondclip]; \
  
      [1:v]trim=start=0:end=1,setpts=PTS-STARTPTS[fadeinsrc]; \
  
      [fadeinsrc]format=pix_fmts=yuva420p, fade=t=in:st=0:d=1:alpha=1[fadein]; \
  
      [fadeoutsrc]format=pix_fmts=yuva420p, fade=t=out:st=0:d=1:alpha=1[fadeout]; \
  
      [fadein]fifo[fadeinfifo]; \
  
      [fadeout]fifo[fadeoutfifo]; \
  
      [fadeoutfifo][fadeinfifo]overlay[crossfade]; \
  
      [firstclip][crossfade][secondclip]concat=n=3[output]; \
  
      [0:a][1:a] acrossfade=d=1 [audio]" -vcodec libx264 -map "[output]" -map "[audio]" "outputs/240p.mp4"

  Here’s the raw command (the exact command I used) :

  ffmpeg -i "inputs/intro.mp4" -i "inputs/240p.mp4" -an -filter_complex "[0:v]trim=start=0:end=38,setpts=PTS-STARTPTS[firstclip]; [0:v]trim=start=38:end=39,setpts=PTS-STARTPTS[fadeoutsrc]; [1:v]trim=start=1,setpts=PTS-STARTPTS[secondclip]; [1:v]trim=start=0:end=1,setpts=PTS-STARTPTS[fadeinsrc]; [fadeinsrc]format=pix_fmts=yuva420p, fade=t=in:st=0:d=1:alpha=1[fadein]; [fadeoutsrc]format=pix_fmts=yuva420p, fade=t=out:st=0:d=1:alpha=1[fadeout]; [fadein]fifo[fadeinfifo]; [fadeout]fifo[fadeoutfifo]; [fadeoutfifo][fadeinfifo]overlay[crossfade]; [firstclip][crossfade][secondclip]concat=n=3[output]; [0:a][1:a] acrossfade=d=1 [audio]" -vcodec libx264 -map "[output]" -map "[audio]" "outputs/240p.mp4"

  The "error" is reproducible with and without the -an and the acrossfade filters.

  This is the output :

  PS C:\scripts\ffmpeg> ffmpeg -i "inputs/intro.mp4" -i "inputs/240p.mp4" -an -filter_complex "[0:v]trim=start=0:end=38,setpts=PTS-STARTPTS[firstclip]; [0:v]trim=start=38:end=39,setpts=PTS-STARTPTS[fadeoutsrc]; [1:v]trim=start=1,setpts=PTS-STARTPTS[secondclip]; [1:v]trim=start=0:end=1,setpts=PTS-STARTPTS[fadeinsrc]; [fadeinsrc]format=pix_fmts=yuva420p, fade=t=in:st=0:d=1:alpha=1[fadein]; [fadeoutsrc]format=pix_fmts=yuva420p, fade=t=out:st=0:d=1:alpha=1[fadeout]; [fadein]fifo[fadeinfifo]; [fadeout]fifo[fadeoutfifo]; [fadeoutfifo][fadeinfifo]overlay[crossfade]; [firstclip][crossfade][secondclip]concat=n=3[output]; [0:a][1:a] acrossfade=d=1 [audio]" -map "[output]" -map "[audio]" "outputs/240p.mp4"
  
  ffmpeg version N-86669-gc1d1274 Copyright (c) 2000-2017 the FFmpeg developers
  
    built with gcc 7.1.0 (GCC)
  
    configuration: --enable-gpl --enable-version3 --enable-cuda --enable-cuvid --enable-d3d11va --enable-dxva2 --enable-libmfx --enable-nvenc --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg --enable-lzma --enable-zlib
  
    libavutil      55. 67.100 / 55. 67.100
  
    libavcodec     57.100.102 / 57.100.102
  
    libavformat    57. 75.100 / 57. 75.100
  
    libavdevice    57.  7.100 / 57.  7.100
  
    libavfilter     6. 94.100 /  6. 94.100
  
    libswscale      4.  7.101 /  4.  7.101
  
    libswresample   2.  8.100 /  2.  8.100
  
    libpostproc    54.  6.100 / 54.  6.100
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'inputs/intro.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf57.72.101
  
    Duration: 00:06:24.45, start: 0.000000, bitrate: 491 kb/s
  
      Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 426x240 [SAR 1:1 DAR 71:40], 353 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc (default)
  
      Metadata:
  
        handler_name    : VideoHandler
  
      Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 130 kb/s (default)
  
      Metadata:
  
        handler_name    : SoundHandler
  
  Input #1, mov,mp4,m4a,3gp,3g2,mj2, from 'inputs/240p.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf56.40.101
  
    Duration: 00:06:24.43, start: 0.000000, bitrate: 375 kb/s
  
      Stream #1:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 426x240 [SAR 1:1 DAR 71:40], 243 kb/s, 25 fps, 25 tbr, 90k tbn, 50 tbc (default)
  
      Metadata:
  
        handler_name    : VideoHandler
  
      Stream #1:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 125 kb/s (default)
  
      Metadata:
  
        handler_name    : SoundHandler
  
  Stream mapping:
  
    Stream #0:0 (h264) -> trim
  
    Stream #0:0 (h264) -> trim
  
    Stream #0:1 (aac) -> acrossfade:crossfade0
  
    Stream #1:0 (h264) -> trim
  
    Stream #1:0 (h264) -> trim
  
    Stream #1:1 (aac) -> acrossfade:crossfade1
  
    concat -> Stream #0:0 (libx264)
  
    acrossfade -> Stream #0:1 (aac)
  
  Press [q] to stop, [?] for help
  
  [libx264 @ 00000000026b2240] using SAR=1/1
  
  [libx264 @ 00000000026b2240] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
  
  [libx264 @ 00000000026b2240] profile High, level 2.1
  
  [libx264 @ 00000000026b2240] 264 - core 152 r2851 ba24899 - H.264/MPEG-4 AVC codec - Copyleft 2003-2017 - 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=7 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=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 'outputs/240p.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf57.75.100
  
      Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 426x240 [SAR 1:1 DAR 71:40], q=-1--1, 25 fps, 12800 tbn, 25 tbc (default)
  
      Metadata:
  
        encoder         : Lavc57.100.102 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         : Lavc57.100.102 aac
  
  frame=10369 fps=503 q=28.0 size=   24064kB time=00:06:55.68 bitrate= 474.2kbits/s speed=20.2x

  At frame 10000 it gets stuck... I waited for 1hour but it keeps stuck.

  I’ve updated ffmpeg :

  ffmpeg -version
  
  ffmpeg version N-86669-gc1d1274 Copyright (c) 2000-2017 the FFmpeg developers
  
  built with gcc 7.1.0 (GCC)
  
  configuration: --enable-gpl --enable-version3 --enable-cuda --enable-cuvid --enable-d3d11va --enable-dxva2 --enable-libmfx --enable-nvenc --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg --enable-lzma --enable-zlib
  
  libavutil      55. 67.100 / 55. 67.100
  
  libavcodec     57.100.102 / 57.100.102
  
  libavformat    57. 75.100 / 57. 75.100
  
  libavdevice    57.  7.100 / 57.  7.100
  
  libavfilter     6. 94.100 /  6. 94.100
  
  libswscale      4.  7.101 /  4.  7.101
  
  libswresample   2.  8.100 /  2.  8.100
  
  libpostproc    54.  6.100 / 54.  6.100

  I used these references :

  • https://www.youtube.com/watch?v=INiRu2_XdJE
  • How to use FFMPEG for a cutaway with audio crossfade ?
  • https://superuser.com/questions/778762/crossfade-between-2-videos-using-ffmpeg
  • https://ffmpeg.org/ffmpeg-filters.html#trim
  • https://ffmpeg.org/ffmpeg.html