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• FFmpeg Concatenate multiple videos with crossfade

  21 juillet 2018, par Jack

  I’m very new to FFmpeg, so any help is much appreciated.

  I’m trying to create a batch file that can take all the videos in a folder and concatenate them with 1 sec crossfade between each video. The amount of videos in the folder isn’t set, nor is the length of these videos, which is where my issue is.

  I have gotten as far as importing the videos using dir /b *.mp4 > list.txt so that i don’t have to import each file individually.

  One idea I had was to find a pattern in crossfading videos with ffmpeg, then using python to edit a secondary batch file to fit the amount of videos. However, I haven’t been able to determine any pattern with my lack of ffmpeg experience.

• Bring back support for CommonJS

  19 juin 2018, par bbc2

  Bring back support for CommonJS
  Browserify, which follows CommonJS module conventions, parses the AST
  
  for `require` calls to determine the dependencies of a project.
  jQuery File Upload used to support this ; it was removed in
  
  e2cda462610c776a1f7856692c98b1baab02231a when a new version of
  
  jquery.ui.widget.js was vendored.
  

• Specifying audio/video for a multiple stream/multiple file setup using ffmpeg

  31 mai 2018, par Robert Smith

  Folks, I have the following ffmpeg command :

  ffmpeg
  
      -i video1a -i video2a -i video3a -i video4a
  
      -i video1b -i video2b -i video3b -i video4b
  
      -i video1c
  
      -filter_complex "
  
          nullsrc=size=640x480 [base];
  
          [0:v] setpts=PTS-STARTPTS+   0/TB, scale=320x240 [1a];
  
          [1:v] setpts=PTS-STARTPTS+ 300/TB, scale=320x240 [2a];
  
          [2:v] setpts=PTS-STARTPTS+ 400/TB, scale=320x240 [3a];
  
          [3:v] setpts=PTS-STARTPTS+ 400/TB, scale=320x240 [4a];
  
          [4:v] setpts=PTS-STARTPTS+2500/TB, scale=320x240 [1b];
  
          [5:v] setpts=PTS-STARTPTS+ 800/TB, scale=320x240 [2b];
  
          [6:v] setpts=PTS-STARTPTS+ 700/TB, scale=320x240 [3b];
  
          [7:v] setpts=PTS-STARTPTS+ 800/TB, scale=320x240 [4b];
  
          [8:v] setpts=PTS-STARTPTS+3000/TB, scale=320x240 [1c];
  
          [base][1a] overlay=eof_action=pass [o1];
  
          [o1][1b] overlay=eof_action=pass [o1];
  
          [o1][1c] overlay=eof_action=pass:shortest=1 [o1];
  
          [o1][2a] overlay=eof_action=pass:x=320 [o2];
  
          [o2][2b] overlay=eof_action=pass:x=320 [o2];
  
          [o2][3a] overlay=eof_action=pass:y=240 [o3];
  
          [o3][3b] overlay=eof_action=pass:y=240 [o3];
  
          [o3][4a] overlay=eof_action=pass:x=320:y=240[o4];
  
          [o4][4b] overlay=eof_action=pass:x=320:y=240"
  
      -c:v libx264 output.mp4

  I have just found out something regarding the files I will be processing with above command : that some mp4 files are video/audio, some mp4 files are audio alone and some mp4 files are video alone. I am already able to determine which ones have audio/video/both using ffprobe. My question is how do I modify above command to state what each file contains (video/audio/both).

  This is the scenario of which file has video/audio/both :

  video   time
  
  ======= =========
  
  Area 1:
  
  video1a    audio
  
  video1b     both
  
  video1c    video
  
  
  
  Area 2:
  
  video2a    video
  
  video2b    audio
  
  
  
  Area 3:
  
  video3a    video
  
  video3b    audio
  
  
  
  Area 4:
  
  video4a    video
  
  video4b    both

  My question is how to correctly modify command above to specify what the file has (audio/video/both). Thank you.

  Update #1

  I ran test as follows :

  -i "video1a.flv"
  
  -i "video1b.flv"
  
  -i "video1c.flv"
  
  -i "video2a.flv"
  
  -i "video3a.flv"
  
  -i "video4a.flv"
  
  -i "video4b.flv"
  
  -i "video4c.flv"
  
  -i "video4d.flv"
  
  -i "video4e.flv"
  
  
  
  -filter_complex 
  
  
  
  nullsrc=size=640x480[base];
  
  [0:v]setpts=PTS-STARTPTS+120/TB,scale=320x240[1a];
  
  [1:v]setpts=PTS-STARTPTS+3469115/TB,scale=320x240[1b];
  
  [2:v]setpts=PTS-STARTPTS+7739299/TB,scale=320x240[1c];
  
  [5:v]setpts=PTS-STARTPTS+4390466/TB,scale=320x240[4a];
  
  [6:v]setpts=PTS-STARTPTS+6803937/TB,scale=320x240[4b];
  
  [7:v]setpts=PTS-STARTPTS+8242005/TB,scale=320x240[4c];
  
  [8:v]setpts=PTS-STARTPTS+9811577/TB,scale=320x240[4d];
  
  [9:v]setpts=PTS-STARTPTS+10765190/TB,scale=320x240[4e];
  
  [base][1a]overlay=eof_action=pass[o1];
  
  [o1][1b]overlay=eof_action=pass[o1];
  
  [o1][1c]overlay=eof_action=pass:shortest=1[o1];
  
  [o1][4a]overlay=eof_action=pass:x=320:y=240[o4];
  
  [o4][4b]overlay=eof_action=pass:x=320:y=240[o4];
  
  [o4][4c]overlay=eof_action=pass:x=320:y=240[o4];
  
  [o4][4d]overlay=eof_action=pass:x=320:y=240[o4];
  
  [o4][4e]overlay=eof_action=pass:x=320:y=240;
  
  [0:a]asetpts=PTS-STARTPTS+120/TB,aresample=async=1,apad[a1a];
  
  [1:a]asetpts=PTS-STARTPTS+3469115/TB,aresample=async=1,apad[a1b];
  
  [2:a]asetpts=PTS-STARTPTS+7739299/TB,aresample=async=1[a1c];
  
  [3:a]asetpts=PTS-STARTPTS+82550/TB,aresample=async=1,apad[a2a];
  
  [4:a]asetpts=PTS-STARTPTS+2687265/TB,aresample=async=1,apad[a3a];
  
  [a1a][a1b][a1c][a2a][a3a]amerge=inputs=5
  
  
  
  -c:v libx264 -c:a aac -ac 2 output.mp4

  This is the stream data from ffmpeg :

  Input #0
  
    Stream #0:0: Video: vp6f, yuv420p, 160x128, 1k tbr, 1k tbn
  
    Stream #0:1: Audio: nellymoser, 11025 Hz, mono, flt
  
  
  
  Input #1
  
    Stream #1:0: Audio: nellymoser, 11025 Hz, mono, flt
  
    Stream #1:1: Video: vp6f, yuv420p, 160x128, 1k tbr, 1k tbn
  
  
  
  Input #2
  
    Stream #2:0: Audio: nellymoser, 11025 Hz, mono, flt
  
    Stream #2:1: Video: vp6f, yuv420p, 160x128, 1k tbr, 1k tbn
  
  
  
  Input #3
  
    Stream #3:0: Audio: nellymoser, 11025 Hz, mono, flt
  
  
  
  Input #4
  
    Stream #4:0: Audio: nellymoser, 11025 Hz, mono, flt
  
  
  
  Input #5
  
    Stream #5:0: Video: vp6f, yuv420p, 1680x1056, 1k tbr, 1k tbn
  
  
  
  Input #6
  
    Stream #6:0: Video: vp6f, yuv420p, 1680x1056, 1k tbr, 1k tbn
  
  
  
  Input #7
  
    Stream #7:0: Video: vp6f, yuv420p, 1680x1056, 1k tbr, 1k tbn
  
  
  
  Input #8
  
    Stream #8:0: Video: vp6f, yuv420p, 1680x1056, 1k tbr, 1k tbn
  
  
  
  Input #9
  
    Stream #9:0: Video: vp6f, yuv420p, 1680x1056, 1k tbr, 1k tbn

  This is the error :

  Stream mapping:
  
    Stream #0:0 (vp6f) -> setpts
  
    Stream #0:1 (nellymoser) -> asetpts
  
  
  
    Stream #1:0 (nellymoser) -> asetpts
  
    Stream #1:1 (vp6f) -> setpts
  
  
  
    Stream #2:0 (nellymoser) -> asetpts
  
    Stream #2:1 (vp6f) -> setpts
  
  
  
    Stream #3:0 (nellymoser) -> asetpts
  
  
  
    Stream #4:0 (nellymoser) -> asetpts
  
  
  
    Stream #5:0 (vp6f) -> setpts
  
  
  
    Stream #6:0 (vp6f) -> setpts
  
  
  
    Stream #7:0 (vp6f) -> setpts
  
  
  
    Stream #8:0 (vp6f) -> setpts
  
  
  
    Stream #9:0 (vp6f) -> setpts
  
  
  
    overlay -> Stream #0:0 (libx264)
  
    amerge -> Stream #0:1 (aac)
  
  Press [q] to stop, [?] for help
  
  
  
  Enter command: <target>|all <time>|-1 <command>[ <argument>]
  
  
  
  Parse error, at least 3 arguments were expected, only 1 given in string 'ho Oscar'
  
  [Parsed_amerge_39 @ 0aa147c0] No channel layout for input 1
  
      Last message repeated 1 times
  
  [AVFilterGraph @ 05e01900] The following filters could not choose their formats: Parsed_amerge_39
  
  Consider inserting the (a)format filter near their input or output.
  
  Error reinitializing filters!
  
  Failed to inject frame into filter network: I/O error
  
  Error while processing the decoded data for stream #4:0
  
  Conversion failed!
  
  </argument></command></time></target>

  Update #2

  Would it be like this :

  -i "video1a.flv"
  
  -i "video1b.flv"
  
  -i "video1c.flv"
  
  -i "video2a.flv"
  
  -i "video3a.flv"
  
  -i "video4a.flv"
  
  -i "video4b.flv"
  
  -i "video4c.flv"
  
  -i "video4d.flv"
  
  -i "video4e.flv"
  
  
  
  -filter_complex 
  
  
  
  nullsrc=size=640x480[base];
  
  [0:v]setpts=PTS-STARTPTS+120/TB,scale=320x240[1a];
  
  [1:v]setpts=PTS-STARTPTS+3469115/TB,scale=320x240[1b];
  
  [2:v]setpts=PTS-STARTPTS+7739299/TB,scale=320x240[1c];
  
  [5:v]setpts=PTS-STARTPTS+4390466/TB,scale=320x240[4a];
  
  [6:v]setpts=PTS-STARTPTS+6803937/TB,scale=320x240[4b];
  
  [7:v]setpts=PTS-STARTPTS+8242005/TB,scale=320x240[4c];
  
  [8:v]setpts=PTS-STARTPTS+9811577/TB,scale=320x240[4d];
  
  [9:v]setpts=PTS-STARTPTS+10765190/TB,scale=320x240[4e];
  
  [base][1a]overlay=eof_action=pass[o1];
  
  [o1][1b]overlay=eof_action=pass[o1];
  
  [o1][1c]overlay=eof_action=pass:shortest=1[o1];
  
  [o1][4a]overlay=eof_action=pass:x=320:y=240[o4];
  
  [o4][4b]overlay=eof_action=pass:x=320:y=240[o4];
  
  [o4][4c]overlay=eof_action=pass:x=320:y=240[o4];
  
  [o4][4d]overlay=eof_action=pass:x=320:y=240[o4];
  
  [o4][4e]overlay=eof_action=pass:x=320:y=240;
  
  [0:a]asetpts=PTS-STARTPTS+120/TB,aresample=async=1,pan=1c|c0=c0,apad[a1a];
  
  [1:a]asetpts=PTS-STARTPTS+3469115/TB,aresample=async=1,pan=1c|c0=c0,apad[a1b];
  
  [2:a]asetpts=PTS-STARTPTS+7739299/TB,aresample=async=1,pan=1c|c0=c0[a1c];
  
  [3:a]asetpts=PTS-STARTPTS+82550/TB,aresample=async=1,pan=1c|c0=c0,apad[a2a];
  
  [4:a]asetpts=PTS-STARTPTS+2687265/TB,aresample=async=1,pan=1c|c0=c0,apad[a3a];
  
  [a1a][a1b][a1c][a2a][a3a]amerge=inputs=5
  
  
  
  -c:v libx264 -c:a aac -ac 2 output.mp4

  Update #3

  Now getting this error :

  Stream mapping:
  
    Stream #0:0 (vp6f) -> setpts
  
    Stream #0:1 (nellymoser) -> asetpts
  
    Stream #1:0 (nellymoser) -> asetpts
  
    Stream #1:1 (vp6f) -> setpts
  
    Stream #2:0 (nellymoser) -> asetpts
  
    Stream #2:1 (vp6f) -> setpts
  
    Stream #3:0 (nellymoser) -> asetpts
  
    Stream #4:0 (nellymoser) -> asetpts
  
    Stream #5:0 (vp6f) -> setpts
  
    Stream #6:0 (vp6f) -> setpts
  
    Stream #7:0 (vp6f) -> setpts
  
    Stream #8:0 (vp6f) -> setpts
  
    Stream #9:0 (vp6f) -> setpts
  
    overlay -> Stream #0:0 (libx264)
  
    amerge -> Stream #0:1 (aac)
  
  Press [q] to stop, [?] for help
  
  
  
  Enter command: <target>|all <time>|-1 <command>[ <argument>]
  
  
  
  Parse error, at least 3 arguments were expected, only 1 given in string 'ho Oscar'
  
  [Parsed_amerge_44 @ 0a9808c0] No channel layout for input 1
  
  [Parsed_amerge_44 @ 0a9808c0] Input channel layouts overlap: output layout will be determined by the number of distinct input channels
  
  [Parsed_pan_27 @ 07694800] Pure channel mapping detected: 0
  
  [Parsed_pan_31 @ 07694a80] Pure channel mapping detected: 0
  
  [Parsed_pan_35 @ 0a980300] Pure channel mapping detected: 0
  
  [Parsed_pan_38 @ 0a980500] Pure channel mapping detected: 0
  
  [Parsed_pan_42 @ 0a980780] Pure channel mapping detected: 0
  
  [libx264 @ 06ad78c0] using SAR=1/1
  
  [libx264 @ 06ad78c0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
  
  [libx264 @ 06ad78c0] profile High, level 3.0
  
  [libx264 @ 06ad78c0] 264 - core 155 r2901 7d0ff22 - H.264/MPEG-4 AVC codec - Copyleft 2003-2018 - 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=15 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 'output.mp4':
  
    Metadata:
  
      canSeekToEnd    : false
  
      encoder         : Lavf58.16.100
  
      Stream #0:0: Video: h264 (libx264) (avc1 / 0x31637661), yuv420p(progressive), 640x480 [SAR 1:1 DAR 4:3], q=-1--1, 25 fps, 12800 tbn, 25 tbc (default)
  
      Metadata:
  
        encoder         : Lavc58.19.102 libx264
  
      Side data:
  
        cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
  
      Stream #0:1: Audio: aac (LC) (mp4a / 0x6134706D), 11025 Hz, stereo, fltp, 128 kb/s (default)
  
      Metadata:
  
        encoder         : Lavc58.19.102 aac
  
  ...
  
  ...
  
  Error while processing the decoded data for stream #1:1
  
  [libx264 @ 06ad78c0] frame I:133   Avg QP: 8.58  size:  6481
  
  [libx264 @ 06ad78c0] frame P:8358  Avg QP:17.54  size:  1386
  
  [libx264 @ 06ad78c0] frame B:24582 Avg QP:24.27  size:   105
  
  [libx264 @ 06ad78c0] consecutive B-frames:  0.6%  0.5%  0.7% 98.1%
  
  [libx264 @ 06ad78c0] mb I  I16..4: 78.3% 16.1%  5.6%
  
  [libx264 @ 06ad78c0] mb P  I16..4:  0.3%  0.7%  0.1%  P16..4:  9.6%  3.0%  1.4%  0.0%  0.0%    skip:84.9%
  
  [libx264 @ 06ad78c0] mb B  I16..4:  0.0%  0.0%  0.0%  B16..8:  2.9%  0.1%  0.0%  direct: 0.2%  skip:96.8%  L0:47.0% L1:49.0% BI: 4.0%
  
  [libx264 @ 06ad78c0] 8x8 transform intra:35.0% inter:70.1%
  
  [libx264 @ 06ad78c0] coded y,uvDC,uvAC intra: 36.8% 43.7% 27.3% inter: 1.6% 3.0% 0.1%
  
  [libx264 @ 06ad78c0] i16 v,h,dc,p: 79%  8%  4%  9%
  
  [libx264 @ 06ad78c0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 32% 20% 12%  3%  6%  8%  6%  5%  7%
  
  [libx264 @ 06ad78c0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 38% 22%  9%  4%  6%  7%  5%  5%  4%
  
  [libx264 @ 06ad78c0] i8c dc,h,v,p: 62% 15% 16%  7%
  
  [libx264 @ 06ad78c0] Weighted P-Frames: Y:0.6% UV:0.5%
  
  [libx264 @ 06ad78c0] ref P L0: 65.4% 12.3% 14.3%  7.9%  0.0%
  
  [libx264 @ 06ad78c0] ref B L0: 90.2%  7.5%  2.3%
  
  [libx264 @ 06ad78c0] ref B L1: 96.3%  3.7%
  
  [libx264 @ 06ad78c0] kb/s:90.81
  
  [aac @ 06ad8480] Qavg: 65519.970
  
  [aac @ 06ad8480] 2 frames left in the queue on closing
  
  Conversion failed!
  
  </argument></command></time></target>