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• Script timing with FFMPEG and PHP

  23 juin 2014, par egekhter

  I’m running into a very strange bug.

  Here’s my command console output :

  ffmpeg -i /transcodes/original/883_1000_1403436916_00001.MTS -y -vcodec libx264 -tune zerolatency -
  
  
  
  movflags faststart -crf 20 -profile:v high -level:v 4.0 -maxrate 6000k -bufsize 12000k -acodec libfdk_aac -b:a 256k /transcodes/883_1000_1403436916_00001_HQ.mp4 -vcodec libx264 -s 848x480 -tune zerolatency -movflags faststart -crf 25 -profile:v main -level:v 3.1 -maxrate 1400k -bufsize 1400k -acodec libfdk_aac -b:a 256k /transcodes/883_1000_1403436916_00001_SQ.mp4 -ss 166.16 -f image2 -vframes 1 /transcodes/883_1000_1403436916_00001_poster.jpg -ss 166.16 -f image2 -vf scale=-1:240 -vframes 1 /transcodes/883_1000_1403436916_00001_thumb.jpg
  
  
  
  ffmpeg version 2.2.git Copyright (c) 2000-2014 the FFmpeg developers
  
    built on Jun 13 2014 02:40:27 with gcc 4.6 (Ubuntu/Linaro 4.6.3-1ubuntu5)
  
    configuration: --prefix=/home/ubuntu/ffmpeg_build --extra-cflags=-I/home/ubuntu/ffmpeg_build/include --extra-ldflags=-L/home/ubuntu/ffmpeg_build/lib --bindir=/home/ubuntu/bin --extra-libs=-ldl --enable-gpl --enable-libass --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopus --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-nonfree
  
    libavutil      52. 89.100 / 52. 89.100
  
    libavcodec     55. 66.100 / 55. 66.100
  
    libavformat    55. 43.100 / 55. 43.100
  
    libavdevice    55. 13.101 / 55. 13.101
  
    libavfilter     4.  8.100 /  4.  8.100
  
    libswscale      2.  6.100 /  2.  6.100
  
    libswresample   0. 19.100 /  0. 19.100
  
    libpostproc    52.  3.100 / 52.  3.100
  
  Input #0, mpegts, from '/transcodes/original/883_1000_1403436916_00001.MTS':
  
    Duration: 00:04:11.74, start: 0.382511, bitrate: 25222 kb/s
  
    Program 1 
  
      Stream #0:0[0x1011]: Video: h264 (High) (HDMV / 0x564D4448), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 59.94 fps, 59.94 tbr, 90k tbn, 119.88 tbc
  
      Stream #0:1[0x1100]: Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz, 5.1(side), fltp, 384 kb/s
  
      Stream #0:2[0x1200]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] / 0x0090), 1920x1080
  
  [swscaler @ 0x216fe40] deprecated pixel format used, make sure you did set range correctly
  
  [swscaler @ 0x2188c20] deprecated pixel format used, make sure you did set range correctly
  
  [libx264 @ 0x2143e60] using SAR=1/1
  
  [libx264 @ 0x2143e60] MB rate (489110) > level limit (245760)
  
  [libx264 @ 0x2143e60] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2
  
  [libx264 @ 0x2143e60] profile High, level 4.0
  
  [libx264 @ 0x2143e60] 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=2 lookahead_threads=2 sliced_threads=1 slices=2 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=0 rc=crf mbtree=0 crf=20.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 vbv_maxrate=6000 vbv_bufsize=12000 crf_max=0.0 nal_hrd=none filler=0 ip_ratio=1.40 aq=1:1.00
  
  [libx264 @ 0x2150680] using SAR=160/159
  
  [libx264 @ 0x2150680] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2
  
  [libx264 @ 0x2150680] profile Main, level 3.1
  
  [libx264 @ 0x2150680] 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=0x1:0x111 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=2 lookahead_threads=2 sliced_threads=1 slices=2 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=0 rc=crf mbtree=0 crf=25.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 vbv_maxrate=1400 vbv_bufsize=1400 crf_max=0.0 nal_hrd=none filler=0 ip_ratio=1.40 aq=1:1.00
  
  Output #0, mp4, to '/transcodes/883_1000_1403436916_00001_HQ.mp4':
  
    Metadata:
  
      encoder         : Lavf55.43.100
  
      Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], q=-1--1, max. 6000 kb/s, 59.94 fps, 60k tbn, 59.94 tbc
  
      Metadata:
  
        encoder         : Lavc55.66.100 libx264
  
      Stream #0:1: Audio: aac (libfdk_aac) ([64][0][0][0] / 0x0040), 48000 Hz, 5.1, s16, 256 kb/s
  
      Metadata:
  
        encoder         : Lavc55.66.100 libfdk_aac
  
  Output #1, mp4, to '/transcodes/883_1000_1403436916_00001_SQ.mp4':
  
    Metadata:
  
      encoder         : Lavf55.43.100
  
      Stream #1:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 848x480 [SAR 160:159 DAR 16:9], q=-1--1, max. 1400 kb/s, 59.94 fps, 60k tbn, 59.94 tbc
  
      Metadata:
  
        encoder         : Lavc55.66.100 libx264
  
      Stream #1:1: Audio: aac (libfdk_aac) ([64][0][0][0] / 0x0040), 48000 Hz, 5.1, s16, 256 kb/s
  
      Metadata:
  
        encoder         : Lavc55.66.100 libfdk_aac
  
  Output #2, image2, to '/transcodes/883_1000_1403436916_00001_poster.jpg':
  
    Metadata:
  
      encoder         : Lavf55.43.100
  
      Stream #2:0: Video: mjpeg, yuvj420p, 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 200 kb/s, 59.94 fps, 90k tbn, 59.94 tbc
  
      Metadata:
  
        encoder         : Lavc55.66.100 mjpeg
  
  Output #3, image2, to '/transcodes/883_1000_1403436916_00001_thumb.jpg':
  
    Metadata:
  
      encoder         : Lavf55.43.100
  
      Stream #3:0: Video: mjpeg, yuvj420p, 427x240 [SAR 1280:1281 DAR 16:9], q=2-31, 200 kb/s, 59.94 fps, 90k tbn, 59.94 tbc
  
      Metadata:
  
        encoder         : Lavc55.66.100 mjpeg
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
  
    Stream #0:1 -> #0:1 (ac3 (native) -> aac (libfdk_aac))
  
    Stream #0:0 -> #1:0 (h264 (native) -> h264 (libx264))
  
    Stream #0:1 -> #1:1 (ac3 (native) -> aac (libfdk_aac))
  
    Stream #0:0 -> #2:0 (h264 (native) -> mjpeg (mjpeg))
  
    Stream #0:0 -> #3:0 (h264 (native) -> mjpeg (mjpeg))
  
  frame=15090 fps=1.0 q=39.0 q=30.0 q=6.6 q=4.3 size=  193843kB time=00:04:11.75 bitrate=6307.7kbits/s dup=0 drop=15088    
  
  [mp4 @ 0x210ae00] Starting second pass: moving the moov atom to the beginning of the file
  
  [mp4 @ 0x210ae00] Unable to re-open /transcodes/883_1000_1403436916_00001_HQ.mp4 output file for the second pass (faststart)
  
  [mp4 @ 0x214fc20] Starting second pass: moving the moov atom to the beginning of the file
  
  [mp4 @ 0x214fc20] Unable to re-open /transcodes/883_1000_1403436916_00001_SQ.mp4 output file for the second pass (faststart)
  
  frame=15090 fps=1.0 q=39.0 Lq=30.0 q=6.6 q=4.3 size=  193843kB time=00:04:11.77 bitrate=6307.1kbits/s dup=0 drop=15088    
  
  video:212914kB audio:15741kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
  
  [libx264 @ 0x2143e60] frame I:162   Avg QP:23.31  size: 38205
  
  [libx264 @ 0x2143e60] frame P:14928 Avg QP:25.47  size: 12322
  
  [libx264 @ 0x2143e60] mb I  I16..4: 24.9% 70.4%  4.6%
  
  [libx264 @ 0x2143e60] mb P  I16..4:  2.2%  3.2%  0.0%  P16..4: 38.3%  3.7%  4.3%  0.0%  0.0%    skip:48.3%
  
  [libx264 @ 0x2143e60] 8x8 transform intra:60.6% inter:94.6%
  
  [libx264 @ 0x2143e60] coded y,uvDC,uvAC intra: 25.5% 50.7% 2.8% inter: 9.7% 17.3% 0.0%
  
  [libx264 @ 0x2143e60] i16 v,h,dc,p: 43% 17% 10% 29%
  
  [libx264 @ 0x2143e60] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 30% 13% 34%  4%  4%  4%  5%  3%  3%
  
  [libx264 @ 0x2143e60] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 37% 18% 13%  5%  7%  6%  7%  4%  3%
  
  [libx264 @ 0x2143e60] i8c dc,h,v,p: 64% 15% 19%  2%
  
  [libx264 @ 0x2143e60] Weighted P-Frames: Y:0.2% UV:0.0%
  
  [libx264 @ 0x2143e60] ref P L0: 67.7% 14.5% 13.8%  4.0%  0.0%
  
  [libx264 @ 0x2143e60] kb/s:6042.08
  
  [libx264 @ 0x2150680] frame I:72    Avg QP:24.70  size: 14016
  
  [libx264 @ 0x2150680] frame P:15018 Avg QP:28.46  size:  1783
  
  [libx264 @ 0x2150680] mb I  I16..4: 39.4%  0.0% 60.6%
  
  [libx264 @ 0x2150680] mb P  I16..4:  0.8%  0.0%  0.3%  P16..4: 36.3%  4.1%  2.6%  0.0%  0.0%    skip:56.0%
  
  [libx264 @ 0x2150680] coded y,uvDC,uvAC intra: 32.1% 41.1% 7.1% inter: 3.9% 6.6% 0.1%
  
  [libx264 @ 0x2150680] i16 v,h,dc,p: 50% 12% 10% 27%
  
  [libx264 @ 0x2150680] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 34% 15% 22%  5%  5%  5%  6%  5%  3%
  
  [libx264 @ 0x2150680] i8c dc,h,v,p: 67% 11% 19%  3%
  
  [libx264 @ 0x2150680] Weighted P-Frames: Y:0.7% UV:0.1%
  
  [libx264 @ 0x2150680] ref P L0: 65.0% 22.3% 10.0%  2.6%  0.0%
  
  [libx264 @ 0x2150680] kb/s:882.93

  I’ve tried adding sleep(5) after :

          exec($cmd, $out, $ret);

  to give the script time to move the moov atom to the front before uploading the local file to s3 and then deleting the local file, but it is not 100% reliable.

  Any ideas ?

• ffmpeg not setting GOP size for x264

  5 juillet 2012, par Chris Robinson

  Can someone please explain to me why the following settings :

  ffmpeg -i test.avi -vcodec libx264 -g 2 -keyint_min 1 -sc_threshold 100000000 -bf 1 test.mp4

  produces the following output :

  ffmpeg version N-41668-g564bb24 Copyright (c) 2000-2012 the FFmpeg developers
  
  built on Jun 17 2012 20:18:05 with gcc 4.6.3
  
  configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-runtime-cpudetect --enable-avisynth --enable-bzlib --enable-frei0r --enable-libass --enable-libcelt --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libfreetype --enable-libgsm --enable-libmp3lame --enable-libnut --enable-libopenjpeg --enable-librtmp --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libutvideo --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --ena  libavutil      51. 58.100 / 51. 58.100
  
    libavcodec     54. 25.100 / 54. 25.100
  
    libavformat    54.  6.101 / 54.  6.101
  
    libavdevice    54.  0.100 / 54.  0.100
  
    libavfilter     2. 81.100 /  2. 81.100
  
    libswscale      2.  1.100 /  2.  1.100
  
    libswresample   0. 15.100 /  0. 15.100
  
    libpostproc    52.  0.100 / 52.  0.100
  
  Input #0, avi, from 'test.avi':
  
    Metadata:
  
      encoder         : Lavf54.6.101
  
    Duration: 00:00:01.70, start: 0.000000, bitrate: 4258 kb/s
  
  Stream #0:0: Video: mpeg4 (Simple Profile) (DIVX / 0x58564944), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], 29.97 fps, 29.97 tbr, 29.97 tbn, 30k tbc
  
  Stream #0:1: Audio: mp3 (U[0][0][0] / 0x0055), 48000 Hz, stereo, s16, 128 kb/s
  
  [buffer @ 0000000004115600] w:1280 h:720 pixfmt:yuv420p tb:1001/30000 fr:30000/1001 sar:1/1 sws_param:flags=2
  
  [ffmpeg_buffersink @ 00000000041157a0] No opaque field provided
  
  [libx264 @ 000000000411f120] using SAR=1/1
  
  [libx264 @ 000000000411f120] using cpu capabilities: MMX2 SSE2Fast SSSE3 FastShuffle SSE4.2
  
  [libx264 @ 000000000411f120] profile High, level 3.1
  
  [libx264 @ 000000000411f120] 264 - core 125 r2200 999b753 - H.264/MPEG-4 AVC codec - Copyleft 2003-2012 - 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=36 lookahead_threads=6 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 keOutput #0, mp4, to 'test.mp4':
  
    Metadata:
  
      encoder         : Lavf54.6.101
  
      Stream #0:0: Video: h264 ([33][0][0][0] / 0x0021), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], q=-1--1, 30k tbn, 29.97 tbc
  
      Stream #0:1: Audio: aac ([64][0][0][0] / 0x0040), 48000 Hz, stereo, s16, 128 kb/s
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (mpeg4 -> libx264)
  
    Stream #0:1 -> #0:1 (mp3 -> libvo_aacenc)
  
  Press [q] to stop, [?] for help
  
  [libvo_aacenc @ 0000000001ebe240] Que input is backward in time
  
  Last message repeated 8 times
  
  frame=   35 fps=0.0 q=-1.0 Lsize=     466kB time=00:00:01.10 bitrate=3466.6kbits/s dup=1 drop=0    
  
  
  
  video:436kB audio:28kB global headers:0kB muxing overhead 0.558509%
  
  [libx264 @ 000000000411f120] frame I:1     Avg QP:24.93  size: 92398
  
  [libx264 @ 000000000411f120] frame P:28    Avg QP:26.82  size: 12010
  
  [libx264 @ 000000000411f120] frame B:6     Avg QP:30.37  size:  2764
  
  [libx264 @ 000000000411f120] consecutive B-frames: 74.3%  5.7%  8.6% 11.4%
  
  [libx264 @ 000000000411f120] mb I  I16..4: 41.5% 40.1% 18.4%
  
  [libx264 @ 000000000411f120] mb P  I16..4:  3.9%  1.4%  0.6%  P16..4: 14.3%  4.7%  3.2%  0.0%  0.0%    skip:72.0%
  
  [libx264 @ 000000000411f120] mb B  I16..4:  1.1%  0.4%  0.1%  B16..8: 14.2%  2.8%  0.6%  direct: 1.1%  skip:79.8%  L0:49.8% L1:39.5% BI:10.8%
  
  [libx264 @ 000000000411f120] 8x8 transform intra:29.9% inter:76.4%
  
  [libx264 @ 000000000411f120] coded y,uvDC,uvAC intra: 31.1% 34.4% 18.7% inter: 10.2% 6.3% 3.0%
  
  [libx264 @ 000000000411f120] i16 v,h,dc,p: 62% 34%  3%  0%
  
  [libx264 @ 000000000411f120] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 18% 23% 38%  4%  4%  3%  3%  2%  5%
  
  [libx264 @ 000000000411f120] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 40% 35% 16%  1%  2%  2%  1%  1%  1%
  
  [libx264 @ 000000000411f120] i8c dc,h,v,p: 52% 20% 24%  3%
  
  [libx264 @ 000000000411f120] Weighted P-Frames: Y:0.0% UV:0.0%
  
  [libx264 @ 000000000411f120] ref P L0: 70.5% 10.1% 12.1%  7.3%
  
  [libx264 @ 000000000411f120] ref B L0: 81.1% 16.9%  2.0%
  
  [libx264 @ 000000000411f120] ref B L1: 89.7% 10.3%
  
  [libx264 @ 000000000411f120] kb/s:3050.18

  Why am I not getting an I-Frame every second frame ? Is there something else I can set to do enforce this ? If not, can you suggest how to do this using the mpeg4 codec. It's vital that I can extract what type of frame has been encoded during the encoding process and that I can set a specific GOP structure.

• Will ffmpeg transcoding change the media's duration ?

  6 juillet 2012, par MaiTiano

  For example, I have a example flv media : 1775818137_1775828481_10344.flv. Only audio data has contained in it. (No video data)

  The major properties of this flv are :

  _____________________________________________________________________
  
  Format                                   : Flash Video
  
  
  
  File size                                : 87.4 KiB
  
  
  
  Duration                                 : 494 hours
  
  
  
  Overall bit rate mode                    : CBR
  
  
  
  Overall bit rate                         : 0 bps
  
  
  
  Writing application                      : Lavf53.4.0
  
  
  
  Audio
  
  
  
  Format                                   : MPEG Audio
  
  
  
  Format version                           : Version 1
  
  
  
  Format profile                           : Layer 3
  
  
  
  Mode                                     : Joint stereo
  
  
  
  Mode extension                           : MS Stereo
  
  
  
  Codec ID                                 : 2
  
  
  
  Codec ID/Hint                            : MP3
  
  
  
  Duration                                 : 49hours
  
  
  
  Bit rate mode                            : CBR
  
  
  
  Bit rate                                 : 64.0 Kbps
  
  
  
  Channel(s)                               : 2 channels
  
  
  
  Sampling rate                            : 44.1 KHz
  
  
  
  Compression mode                         : Lossy
  
  
  
  Stream size                              : 13.3 GiB
  
  
  
  _____________________________________________________________________

  Because this is the flv piece generated from the Suse10.0 server, the timestamp may be not correctly wrote into the flv metadata. Therefore, the Duration item listed above is not the real time of it.
  I has record the time in its file name.
  So, the beginning time is 1775818137 ms
  the ending time of this flv is 1775828481 ms
  The actual duation of this flv is 10344 ms which is about 10 seconds.

  **HERE IS MY QUESTION -.- **

  When I use ffmpeg to transcode flv fromat into ts format, like this,

  ./ffmpeg -i 1775818137_1775828481_10344.flv -f mpegts -vn -acodec libfaac -ar 44100 -ab 48k 1775818137_1775828481_10344.ts

  Is there possibility that the duration of final gotten ts file is not equal to the duation of original flv file ? In other words, the ts file's duration is not 10344ms.