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• FFmpeg avcodec_find_encoder problem

  13 novembre 2012, par net

  I'm newbie in ffmpeg.

  my problem is "avcodec_find_encoder(CODEC_ID_H264) ;" func always returning null.

  ffmpeg configure is below on my ubuntu system.

  ./ffmpeg
  
  FFmpeg version SVN-r26306, Copyright (c) 2000-2011 the FFmpeg developers
  
    built on Jan 11 2011 10:34:49 with gcc 4.4.5
  
    configuration: --enable-gpl --enable-version3 --enable-nonfree --enable-postproc --enable-libfaac --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxvid --enable-x11grab
  
    libavutil     50.36. 0 / 50.36. 0
  
    libavcore      0.16. 0 /  0.16. 0
  
    libavcodec    52.108. 0 / 52.108. 0
  
    libavformat   52.92. 0 / 52.92. 0
  
    libavdevice   52. 2. 3 / 52. 2. 3
  
    libavfilter    1.72. 0 /  1.72. 0
  
    libswscale     0.12. 0 /  0.12. 0
  
    libpostproc   51. 2. 0 / 51. 2. 0

  as you can see, configuration contains —enable-libx264

  so I think avcodec_find_encoder(CODEC_ID_H264) ; have to return something not null...
  please let me know how to solve this problem ?

  ps) I call avcodec_init() and av_register_all() in my program.

  when I compile my test program, using below

  gcc -o test test.c -lavutil -lavformat -lavcodec -lx264 -lz -lm

  thanks

• FFmpeg not encoding with libx264 library

  29 octobre 2011, par bOkeifus

  Hey people of StackOverflow. I have been having a strange issue that I'm not exactly sure what's going on. I am using FFmpeg to convert any incoming video files to h264 mp4 files using the libx264. This is the log that I get from running this line of code :

  ffmpeg -y -i vdoname.flv -acodec libfaac -vcodec libx264 -sameq vid.mp4

  This is the log output after running the line :

  FFmpeg version SVN-r13428, Copyright (c) 2000-2008 Fabrice Bellard, et al.
  
    configuration: --prefix=/usr --disable-static --enable-shared --enable-gpl --enable-nonfree --enable-pthreads --enable-liba52 --enable-liba52bin --enable-libamr-nb --enable-libamr-wb --enable-libfaac --enable-libfaad --enable-libfaadbin --enable-libmp3lame --enable-libtheora --enable-libvorbis --enable-libx264 --enable-libxvid --disable-network --disable-ipv6 --disable-ffserver --disable-ffplay
  
    libavutil version: 49.6.0
  
    libavcodec version: 51.57.0
  
    libavformat version: 52.14.0
  
    libavdevice version: 52.0.0
  
    built on Feb 17 2009 09:01:13, gcc: 4.1.2 20071124 (Red Hat 4.1.2-42)
  
  
  
  Seems stream 0 codec frame rate differs from container frame rate: 1000.00 (1000/1) -> 49.92 (599/12)
  
  Input #0, flv, from '/html/video/937.flv':
  
    Duration: 00:00:10.08, start: 0.000000, bitrate: 48 kb/s
  
      Stream #0.0: Video: flv, yuv420p, 720x480, 49.92 tb(r)
  
      Stream #0.1: Audio: mp3, 22050 Hz, stereo, 48 kb/s
  
  Output #0, h264, to '/html/flvideo/new_937.mp4':
  
      Stream #0.0: Video: libx264, yuv420p, 720x480, q=2-31, 200 kb/s, 49.92 tb(c)
  
      Stream #0.1: Audio: libfaac, 22050 Hz, stereo, 64 kb/s
  
  Stream mapping:
  
    Stream #0.0 -> #0.0
  
    Stream #0.1 -> #0.1
  
  [libx264 @ 0x11d58b0]using cpu capabilities: MMX MMXEXT SSE SSE2 3DNow!
  
  Press [q] to stop encoding

  Can someone please help me out and tell me what to do to get this to work ? I guessed that the libx264 external library is not installed but it doesn't exactly say that in the log file and it looks as if it does find it but then doesn't actually encode the video.

  Any and all help is greatly appreciated.

• ffmpeg rotate and resize

  23 août 2014, par user1321964

  I’m trying to resize a movie and to rotate it counter-clockwise using ffmpeg.
  I can achieve one or the other ok individually

  ffmpeg -i MVI_8189.MOV -vf "transpose=2" -ss 00:00:12 -t 00:00:05 rotate.MOV

  OR

  ffmpeg -i MVI_8189.MOV -s 720x406 -ss 00:00:12 -t 00:00:05 resize.MOV

  but if I try to do both, either-

  ffmpeg -i MVI_8189.MOV -s 720x406 -ss 00:00:12 -t 00:00:05 resize.MOV

  ffmpeg -i resize.MOV -vf "transpose=2" toutp.MOV

  OR

  ffmpeg -i MVI_8189.MOV -vf "transpose=2" -ss 00:00:12 -t 00:00:05 rotate.MOV

  ffmpeg -i rotate.MOV -s 406x720 toutp.MOV

  the final movie does not play, only audio, no video ; neither previewing in Finder, nor in Quicktime. More seriously once I have attempted to play it, I can’t then play any other movie whatsoever (only audio) - quicktime won’t quit, constantly need to force-quit it. The only way to then restore seems to be reboot OS-X

  This though does work -

  ffmpeg -i MVI_8189.MOV -vf "transpose=2" -ss 00:00:12 -t 00:00:05 rotate.MOV

  ffmpeg -i rotate.MOV -s 720x406 toutp.MOV

  but doesn’t do what I want - it stretches the movie in the wrong direction

  Any ideas ?

  ffmpeg version 1.0.git Copyright (c) 2000-2012 the FFmpeg developers
  built on Dec 24 2012 18:43:25 with llvm-gcc 4.2.1 (LLVM build 2336.1.00)

  MAC OSX 10.7.5

  ==========
  output from

  ffmpeg -i MVI_8189.MOV -vf "transpose=2" -ss 00:00:12 -t 00:00:05 rotate.MOV
  
  ffmpeg -i rotate.MOV -s 406x720  toutp.MOV
  
  
  
  
  
  
  
  ffmpeg version 1.0.git Copyright (c) 2000-2012 the FFmpeg developers
  
    built on Dec 24 2012 18:43:25 with llvm-gcc 4.2.1 (LLVM build 2336.1.00)
  
    configuration: --prefix=/usr/local --enable-shared --disable-mmx --enable-libmp3lame --enable-gpl --enable-zlib --enable-libvorbis --enable-libfaac --enable-nonfree --enable-libx264 --enable-pthreads
  
    libavutil      52. 12.100 / 52. 12.100
  
    libavcodec     54. 81.100 / 54. 81.100
  
    libavformat    54. 49.102 / 54. 49.102
  
    libavdevice    54.  3.102 / 54.  3.102
  
    libavfilter     3. 29.101 /  3. 29.101
  
    libswscale      2.  1.103 /  2.  1.103
  
    libswresample   0. 17.102 /  0. 17.102
  
    libpostproc    52.  2.100 / 52.  2.100
  
  Guessed Channel Layout for  Input Stream #0.1 : stereo
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'MVI_8189.MOV':
  
    Metadata:
  
      major_brand     : qt  
  
      minor_version   : 537331968
  
      compatible_brands: qt  CAEP
  
      creation_time   : 2014-08-17 23:13:43
  
    Duration: 00:01:32.40, start: 0.000000, bitrate: 44677 kb/s
  
      Stream #0:0(eng): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuvj420p, 1920x1080, 43132 kb/s, 25 fps, 25 tbr, 25k tbn, 50k tbc
  
      Metadata:
  
        creation_time   : 2014-08-17 23:13:43
  
      Stream #0:1(eng): Audio: pcm_s16le (sowt / 0x74776F73), 48000 Hz, stereo, s16, 1536 kb/s
  
      Metadata:
  
        creation_time   : 2014-08-17 23:13:43
  
  [libx264 @ 0x7fc67c043600] using cpu capabilities: MMX2 SSE2Fast SSSE3 FastShuffle SSE4.2 AVX
  
  [libx264 @ 0x7fc67c043600] profile High, level 4.0
  
  [libx264 @ 0x7fc67c043600] 264 - core 128 - 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=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=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, mov, to 'rotate.MOV':
  
    Metadata:
  
      major_brand     : qt  
  
      minor_version   : 537331968
  
      compatible_brands: qt  CAEP
  
      encoder         : Lavf54.49.102
  
      Stream #0:0(eng): Video: h264 (avc1 / 0x31637661), yuvj420p, 1080x1920, q=-1--1, 12800 tbn, 25 tbc
  
      Metadata:
  
        creation_time   : 2014-08-17 23:13:43
  
      Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 48000 Hz, stereo, s16, 128 kb/s
  
      Metadata:
  
        creation_time   : 2014-08-17 23:13:43
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (h264 -> libx264)
  
    Stream #0:1 -> #0:1 (pcm_s16le -> libfaac)
  
  Press [q] to stop, [?] for help
  
  frame=  125 fps=5.7 q=-2.0 Lsize=    6394kB time=00:00:05.00 bitrate=10470.5kbits/s    /s    
  
  video:6322kB audio:67kB subtitle:0 global headers:0kB muxing overhead 0.079207%
  
  [libx264 @ 0x7fc67c043600] frame I:1     Avg QP:25.87  size:113032
  
  [libx264 @ 0x7fc67c043600] frame P:65    Avg QP:25.78  size: 64251
  
  [libx264 @ 0x7fc67c043600] frame B:59    Avg QP:26.73  size: 37017
  
  [libx264 @ 0x7fc67c043600] consecutive B-frames:  5.6% 94.4%  0.0%  0.0%
  
  [libx264 @ 0x7fc67c043600] mb I  I16..4: 10.7% 79.9%  9.3%
  
  [libx264 @ 0x7fc67c043600] mb P  I16..4:  3.6% 12.0%  0.3%  P16..4: 52.0% 19.1% 11.3%  0.0%  0.0%    skip: 1.7%
  
  [libx264 @ 0x7fc67c043600] mb B  I16..4:  0.9%  1.7%  0.0%  B16..8: 45.4%  5.1%  0.8%  direct:24.2%  skip:21.9%  L0:50.1% L1:44.5% BI: 5.3%
  
  [libx264 @ 0x7fc67c043600] 8x8 transform intra:74.5% inter:79.5%
  
  [libx264 @ 0x7fc67c043600] coded y,uvDC,uvAC intra: 59.4% 94.3% 79.5% inter: 38.2% 80.5% 30.1%
  
  [libx264 @ 0x7fc67c043600] i16 v,h,dc,p: 30% 21% 22% 28%
  
  [libx264 @ 0x7fc67c043600] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 18% 14% 24%  6%  8%  9%  7%  8%  7%
  
  [libx264 @ 0x7fc67c043600] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 28% 18% 17%  6%  7%  8%  6%  6%  4%
  
  [libx264 @ 0x7fc67c043600] i8c dc,h,v,p: 60% 14% 18%  8%
  
  [libx264 @ 0x7fc67c043600] Weighted P-Frames: Y:0.0% UV:0.0%
  
  [libx264 @ 0x7fc67c043600] ref P L0: 43.9% 12.6% 26.8% 16.7%
  
  [libx264 @ 0x7fc67c043600] ref B L0: 68.6% 31.4%
  
  [libx264 @ 0x7fc67c043600] kb/s:10357.28
  
  ffmpeg version 1.0.git Copyright (c) 2000-2012 the FFmpeg developers
  
    built on Dec 24 2012 18:43:25 with llvm-gcc 4.2.1 (LLVM build 2336.1.00)
  
    configuration: --prefix=/usr/local --enable-shared --disable-mmx --enable-libmp3lame --enable-gpl --enable-zlib --enable-libvorbis --enable-libfaac --enable-nonfree --enable-libx264 --enable-pthreads
  
    libavutil      52. 12.100 / 52. 12.100
  
    libavcodec     54. 81.100 / 54. 81.100
  
    libavformat    54. 49.102 / 54. 49.102
  
    libavdevice    54.  3.102 / 54.  3.102
  
    libavfilter     3. 29.101 /  3. 29.101
  
    libswscale      2.  1.103 /  2.  1.103
  
    libswresample   0. 17.102 /  0. 17.102
  
    libpostproc    52.  2.100 / 52.  2.100
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'rotate.MOV':
  
    Metadata:
  
      major_brand     : qt  
  
      minor_version   : 512
  
      compatible_brands: qt  
  
      encoder         : Lavf54.49.102
  
    Duration: 00:00:05.01, start: 0.010667, bitrate: 10446 kb/s
  
      Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuvj420p, 1080x1920, 10358 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc
  
      Metadata:
  
        handler_name    : DataHandler
  
      Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 109 kb/s
  
      Metadata:
  
        handler_name    : DataHandler
  
  [libx264 @ 0x7fcf1c05ba00] using cpu capabilities: MMX2 SSE2Fast SSSE3 FastShuffle SSE4.2 AVX
  
  [libx264 @ 0x7fcf1c05ba00] profile High, level 3.0
  
  [libx264 @ 0x7fcf1c05ba00] 264 - core 128 - 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=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=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, mov, to 'toutp.MOV':
  
    Metadata:
  
      major_brand     : qt  
  
      minor_version   : 512
  
      compatible_brands: qt  
  
      encoder         : Lavf54.49.102
  
      Stream #0:0(eng): Video: h264 (avc1 / 0x31637661), yuvj420p, 406x720, q=-1--1, 12800 tbn, 25 tbc
  
      Metadata:
  
        handler_name    : DataHandler
  
      Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 48000 Hz, stereo, s16, 128 kb/s
  
      Metadata:
  
        handler_name    : DataHandler
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (h264 -> libx264)
  
    Stream #0:1 -> #0:1 (aac -> libfaac)
  
  Press [q] to stop, [?] for help
  
  frame=  125 fps= 32 q=-2.0 Lsize=     469kB time=00:00:05.01 bitrate= 766.2kbits/s    
  
  video:396kB audio:68kB subtitle:0 global headers:0kB muxing overhead 1.088481%
  
  [libx264 @ 0x7fcf1c05ba00] frame I:1     Avg QP:24.20  size: 31395
  
  [libx264 @ 0x7fcf1c05ba00] frame P:42    Avg QP:24.51  size:  7137
  
  [libx264 @ 0x7fcf1c05ba00] frame B:82    Avg QP:27.71  size:   893
  
  [libx264 @ 0x7fcf1c05ba00] consecutive B-frames:  0.8% 16.0% 57.6% 25.6%
  
  [libx264 @ 0x7fcf1c05ba00] mb I  I16..4:  7.0% 62.2% 30.8%
  
  [libx264 @ 0x7fcf1c05ba00] mb P  I16..4:  0.2%  0.8%  0.1%  P16..4: 52.8% 18.7% 12.5%  0.0%  0.0%    skip:14.9%
  
  [libx264 @ 0x7fcf1c05ba00] mb B  I16..4:  0.0%  0.0%  0.0%  B16..8: 30.0%  0.8%  0.1%  direct: 0.9%  skip:68.2%  L0:36.0% L1:62.1% BI: 2.0%
  
  [libx264 @ 0x7fcf1c05ba00] 8x8 transform intra:66.4% inter:78.3%
  
  [libx264 @ 0x7fcf1c05ba00] coded y,uvDC,uvAC intra: 79.3% 93.6% 84.9% inter: 13.6% 32.2% 10.4%
  
  [libx264 @ 0x7fcf1c05ba00] i16 v,h,dc,p: 50% 19%  7% 24%
  
  [libx264 @ 0x7fcf1c05ba00] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 20% 20% 11%  5%  8% 10%  9%  7%  8%
  
  [libx264 @ 0x7fcf1c05ba00] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 27% 22%  8%  5%  8%  8% 10%  5%  5%
  
  [libx264 @ 0x7fcf1c05ba00] i8c dc,h,v,p: 42% 22% 24% 13%
  
  [libx264 @ 0x7fcf1c05ba00] Weighted P-Frames: Y:0.0% UV:0.0%
  
  [libx264 @ 0x7fcf1c05ba00] ref P L0: 48.7% 16.3% 25.6%  9.4%
  
  [libx264 @ 0x7fcf1c05ba00] ref B L0: 73.7% 21.3%  5.0%
  
  [libx264 @ 0x7fcf1c05ba00] ref B L1: 90.7%  9.3%
  
  [libx264 @ 0x7fcf1c05ba00] kb/s:647.04