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Sur d’autres sites (7548)

  • Video Created By FFMPEG is Blank [on hold]

    11 octobre 2015, par Larry Holze

    New to FFMPEG and trying to use it very simplistically. I have a sequence of images that I want to make into a video. Using this command :

    ffmpeg -framerate 30 -i "fr_%05d.jpg" out.mp4

    Creates the out.mp4 file OK, but when I play it back it is just blank.
    Pictures in the .jpg sequence are definitely not blank.

    Am I missing some option(s) ?

    Command window output :

    ffmpeg version N-74700-g628a73f Copyright (c) 2000-2015 the FFmpeg developers
    

    
Built with gcc 4.9.3 (GCC)
    

    

    
configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-av
    

    
isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enab
    

    
le-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --
    

    
enable-libdcadec --enable-libfreetype --enable-libgme --enable-libgsm --enable-l
    

    
ibilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enab
    

    
le-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --en
    

    
able-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --ena
    

    
ble-libtwolame --enable-libvidstab --enable-libvo-aacenc --enable-libvo-amrwbenc
    

    
 --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enabl
    

    
e-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-lzma --ena
    

    
ble-decklink --enable-zlib
    

    
  libavutil      54. 31.100 / 54. 31.100
    

    
  libavcodec     56. 59.100 / 56. 59.100
    

    
  libavformat    56. 40.101 / 56. 40.101
    

    
  libavdevice    56.  4.100 / 56.  4.100
    

    
  libavfilter     5. 39.100 /  5. 39.100
    

    
  libswscale      3.  1.101 /  3.  1.101
    

    
  libswresample   1.  2.101 /  1.  2.101
    

    
  libpostproc    53.  3.100 / 53.  3.100
    

    
Input #0, image2, from 'fr_%05d.jpg':
    

    
  Duration: 00:00:30.03, start: 0.000000, bitrate: N/A
    

    
    Stream #0:0: Video: mjpeg, gray(bt470bg/unknown/unknown), 300x200 [SAR 90:90
    

    
 DAR 3:2], 30 fps, 30 tbr, 30 tbn, 30 tbc
    

    
[swscaler @ 0000000002f88c60] deprecated pixel format used, make sure you did se
    

    
t range correctly
    

    
No pixel format specified, yuvj444p for H.264 encoding chosen.
    

    
Use -pix_fmt yuv420p for compatibility with outdated media players.
    

    
[libx264 @ 000000000589b0c0] using SAR=1/1
    

    
[libx264 @ 000000000589b0c0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2
    

    
AVX
    

    
[libx264 @ 000000000589b0c0] profile High 4:4:4 Predictive, level 1.3, 4:4:4 8-b
    

    
it
    

    
[libx264 @ 000000000589b0c0] 264 - core 148 r2597 e86f3a1 - H.264/MPEG-4 AVC cod
    

    
ec - Copyleft 2003-2015 - http://www.videolan.org/x264.html - options: cabac=1 r
    

    
ef=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_pski
    

    
p=1 chroma_qp_offset=4 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decim
    

    
ate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_a
    

    
dapt=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 'out.mp4':
    

    
  Metadata:
    

    
    encoder         : Lavf56.40.101
    

    
    Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuvj444p(pc), 3
    

    
00x200 [SAR 1:1 DAR 3:2], q=-1--1, 30 fps, 15360 tbn, 30 tbc
    

    
    Metadata:
    

    
      encoder         : Lavc56.59.100 libx264
    

    
Stream mapping:
    

    
  Stream #0:0 -> #0:0 (mjpeg (native) -> h264 (libx264))
    

    
Press [q] to stop, [?] for help
    

    
Input stream #0:0 frame changed from size:300x200 fmt:gray to size:300x200 fmt:y
    

    
uvj444p
    

    
Input stream #0:0 frame changed from size:300x200 fmt:yuvj444p to size:300x200 f
    

    
mt:gray
    

    
[swscaler @ 00000000095b75c0] deprecated pixel format used, make sure you did se
    

    
t range correctly
    

    
Input stream #0:0 frame changed from size:300x200 fmt:gray to size:300x200 fmt:y
    

    
uvj444p
    

    
Input stream #0:0 frame changed from size:300x200 fmt:yuvj444p to size:300x200 f
    

    
mt:gray
    

    
[swscaler @ 00000000095b75c0] deprecated pixel format used, make sure you did se
    

    
t range correctly
    

    
Input stream #0:0 frame changed from size:300x200 fmt:gray to size:300x200 fmt:y
    

    
uvj444p
    

    
frame=  244 fps=0.0 q=29.0 size=      15kB time=00:00:06.40 bitrate=  19.6kbits/
    

    
Input stream #0:0 frame changed from size:300x200 fmt:yuvj444p to size:300x200 f
    

    
mt:gray
    

    
[swscaler @ 00000000095b75c0] deprecated pixel format used, make sure you did se
    

    
t range correctly
    

    
Input stream #0:0 frame changed from size:300x200 fmt:gray to size:300x200 fmt:y
    

    
uvj444p
    

    
frame=  325 fps=316 q=29.0 size=      23kB time=00:00:09.10 bitrate=  20.4kbits/
    

    
frame=  382 fps=247 q=29.0 size=      34kB time=00:00:11.00 bitrate=  25.1kbits/
    

    
frame=  417 fps=203 q=29.0 size=      36kB time=00:00:12.16 bitrate=  24.5kbits/
    

    
frame=  482 fps=187 q=29.0 size=      38kB time=00:00:14.33 bitrate=  21.7kbits/
    

    
frame=  541 fps=175 q=29.0 size=      39kB time=00:00:16.30 bitrate=  19.8kbits/
    

    
frame=  611 fps=170 q=29.0 size=      41kB time=00:00:18.63 bitrate=  18.1kbits/
    

    
frame=  881 fps=214 q=29.0 size=      54kB time=00:00:27.63 bitrate=  15.9kbits/
    

    
frame=  901 fps=214 q=-1.0 Lsize=      66kB time=00:00:29.96 bitrate=  18.1kbits
    

    
/s
    

    
video:55kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing ov
    

    
erhead: 20.648893%
    

    
[libx264 @ 000000000589b0c0] frame I:8     Avg QP:18.01  size:  2331
    

    
[libx264 @ 000000000589b0c0] frame P:239   Avg QP:22.95  size:    91
    

    
[libx264 @ 000000000589b0c0] frame B:654   Avg QP:33.33  size:    23
    

    
[libx264 @ 000000000589b0c0] consecutive B-frames:  2.9%  0.7%  1.0% 95.4%
    

    
[libx264 @ 000000000589b0c0] mb I  I16..4: 36.6% 53.8%  9.6%
    

    
[libx264 @ 000000000589b0c0] mb P  I16..4:  0.1%  0.4%  0.2%  P16..4:  0.6%  0.0
    

    
%  0.0%  0.0%  0.0%    skip:98.6%
    

    
[libx264 @ 000000000589b0c0] mb B  I16..4:  0.0%  0.9%  0.0%  B16..8:  1.7%  0.0
    

    
%  0.0%  direct: 0.0%  skip:97.4%  L0:55.9% L1:44.1% BI: 0.0%
    

    
[libx264 @ 000000000589b0c0] 8x8 transform intra:70.8% inter:12.0%
    

    
[libx264 @ 000000000589b0c0] coded y,u,v intra: 5.9% 4.9% 5.0% inter: 0.0% 0.0%
    

    
0.0%
    

    
[libx264 @ 000000000589b0c0] i16 v,h,dc,p: 54% 46%  0%  0%
    

    
[libx264 @ 000000000589b0c0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 13%  5% 83%  0%  0%
    

    
 0%  0%  0%  0%
    

    
[libx264 @ 000000000589b0c0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 47% 15% 10%  4%  6%
    

    
 5%  4%  4%  4%
    

    
[libx264 @ 000000000589b0c0] Weighted P-Frames: Y:0.0% UV:0.0%
    

    
[libx264 @ 000000000589b0c0] ref P L0: 47.6%  2.6% 44.9%  5.0%
    

    
[libx264 @ 000000000589b0c0] ref B L0: 55.9% 40.1%  4.0%
    

    
[libx264 @ 000000000589b0c0] ref B L1: 93.3%  6.7%
    

    
[libx264 @

  • FFMpeg is dropping video track when clipping an mpg video

    16 juin 2017, par M. Grishaber

    I am extracting a clip from an mpg video using the following command.
    ffmpeg.exe -i 271b.mpg -ss 00:00:05.000 -t 00:00:03.200 -c copy out_271b.mpg

    I am using the copy parameter to avoid reencoding the clip.
    The resulting mpg file only has the audio track, no video.
    The following is the FFMpeg screen dump.

    C:\ffmpeg-20170615\bin>ffmpeg.exe -i 271b.mpg -ss 00:00:05.000 -t 00:00:03.200 -c copy out_271b.mpg
    
    ffmpeg version N-86482-gbc40674 Copyright (c) 2000-2017 the FFmpeg developers
    
      built with gcc 7.1.0 (GCC)
    
      configuration: --disable-static --enable-shared --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. 66.100 / 55. 66.100
    
      libavcodec     57. 99.100 / 57. 99.100
    
      libavformat    57. 73.100 / 57. 73.100
    
      libavdevice    57.  7.100 / 57.  7.100
    
      libavfilter     6. 92.100 /  6. 92.100
    
      libswscale      4.  7.101 /  4.  7.101
    
      libswresample   2.  8.100 /  2.  8.100
    
      libpostproc    54.  6.100 / 54.  6.100
    
    Input #0, mpeg, from '271b.mpg':
    
      Duration: 00:01:11.44, start: 0.460000, bitrate: 2154 kb/s
    
        Stream #0:0[0x1e0]: Video: mpeg2video (Main), yuv420p(tv, bt470bg, progressive), 640x480 [SAR 1:1 DAR 4:3], 2000 kb/s, 25 fps, 25 tbr, 90k tbn, 50 tbc
    
        Stream #0:1[0x1c0]: Audio: mp2, 44100 Hz, mono, s16p, 128 kb/s
    
    [mpeg @ 0000000000666aa0] VBV buffer size not set, using default size of 130KB
    
    If you want the mpeg file to be compliant to some specification
    
    Like DVD, VCD or others, make sure you set the correct buffer size
    
    Output #0, mpeg, to 'out_271b.mpg':
    
      Metadata:
    
        encoder         : Lavf57.73.100
    
        Stream #0:0: Video: mpeg2video (Main), yuv420p(tv, bt470bg, progressive), 640x480 [SAR 1:1 DAR 4:3], q=2-31, 2000 kb/s, 25 fps, 25 tbr, 90k tbn, 25 tbc
    
        Stream #0:1: Audio: mp2, 44100 Hz, mono, s16p, 128 kb/s
    
    Stream mapping:
    
      Stream #0:0 -> #0:0 (copy)
    
      Stream #0:1 -> #0:1 (copy)
    
    Press [q] to stop, [?] for help
    
    frame=   74 fps=0.0 q=-1.0 Lsize=     786kB time=00:00:03.17 bitrate=2027.2kbits/s speed= 198x
    
    video:730kB audio:50kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.843343%

    Thanks

    Addition : I tried to open the generated clip file with ffplay and got the following results. Note that ffplay was able to open and play the original mpg file.

    ffplay.exe out_271b.mpg
    
ffplay version N-86482-gbc40674 Copyright (c) 2003-2017 the FFmpeg developers
    
  built with gcc 7.1.0 (GCC)
    
  configuration: --disable-static --enable-shared --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. 66.100 / 55. 66.100
    
  libavcodec     57. 99.100 / 57. 99.100
    
  libavformat    57. 73.100 / 57. 73.100
    
  libavdevice    57.  7.100 / 57.  7.100
    
  libavfilter     6. 92.100 /  6. 92.100
    
  libswscale      4.  7.101 /  4.  7.101
    
  libswresample   2.  8.100 /  2.  8.100
    
  libpostproc    54.  6.100 / 54.  6.100
    
[mpeg @ 00000000023cde80] probed stream 2 failedB sq=    0B f=0/0
    
[mpeg @ 00000000023cde80] start time for stream 0 is not set in estimate_timings_from_pts
    
[mpeg @ 00000000023cde80] Could not find codec parameters for stream 2 (Video: none, none): unknown codec
    
Consider increasing the value for the 'analyzeduration' and 'probesize' options
    
Input #0, mpeg, from 'out_271bb.mpg':
    
  Duration: 00:00:03.22, start: 0.500000, bitrate: 2068 kb/s
    
    Stream #0:0[0x1bf]: Data: dvd_nav_packet  0KB sq=    0B f=0/0
    
    Stream #0:1[0x1c0]: Audio: mp2, 44100 Hz, mono, s16p, 128 kb/s
    
    Stream #0:2[0x1e0]: Video: none, none, 25 fps, 25 tbr, 90k tbn
    
SDL_OpenAudio (1 channels, 44100 Hz): DirectSoundCreate: No audio device found
    
No more combinations to try, audio open failed
    
No codec could be found with id 0
    
Failed to open file 'out_271b.mpg' or configure filtergraph

  • ffmpeg : how to correctly program input framerate calculation, given desired video length duration and output framerate ?

    19 septembre 2015, par user89

    Let us say that I have n pictures named as imgXY.png (where XY represent the numbers 0 to n-1, properly padded with zeros).

    From these, I would like to create a video that is t seconds long, that has an (output) framerate R.

    I want to figure out what the input framerate should be, so I do the following calculation :

    • time spent per frame : t_per_frame = t/n

    • input framerate : 1/t_per_frame = n/t

    However, when I then try to create a movie using the following command :

    ffmpeg -framerate n/t -i img%02d.png -r 30 test_output.mp4

    I don’t get a movie that is t seconds long, and only two of the frames end up getting displayed. Why is this the case ?

    The following questions were unhelpful :

    How to successfully use ffmpeg to convert images into videos

    Turning images into videos with ffmpeg

    I think I am misunderstanding what is meant by input framerate, and what is meant by output framerate. Could you help clarify ? I am using a Python script to call ffmpeg, as documented here : http://zulko.github.io/blog/2013/09/27/read-and-write-video-frames-in-python-using-ffmpeg/

    Here’s the output from the following manually executed command :

    ffmpeg -framerate 24/5 -i img%02d.png -c:v libx264 -r 30 -pix_fmt yuv420p test_output.mp4

    ffmpeg version N-75204-g314bc20 Copyright (c) 2000-2015 the FFmpeg developers
    
  built with gcc 4.9.3 (GCC)
    
  configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-av
    
isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enab
    
le-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --
    
enable-libdcadec --enable-libfreetype --enable-libgme --enable-libgsm --enable-l
    
ibilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enab
    
le-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --en
    
able-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --ena
    
ble-libtwolame --enable-libvidstab --enable-libvo-aacenc --enable-libvo-amrwbenc
    
 --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enabl
    
e-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-lzma --ena
    
ble-decklink --enable-opencl --enable-zlib
    
  libavutil      55.  2.100 / 55.  2.100
    
  libavcodec     57.  1.100 / 57.  1.100
    
  libavformat    57.  0.100 / 57.  0.100
    
  libavdevice    57.  0.100 / 57.  0.100
    
  libavfilter     6.  1.100 /  6.  1.100
    
  libswscale      4.  0.100 /  4.  0.100
    
  libswresample   2.  0.100 /  2.  0.100
    
  libpostproc    54.  0.100 / 54.  0.100
    
Input #0, image2, from 'img%02d.png':
    
  Duration: 00:00:00.42, start: 0.000000, bitrate: N/A
    
    Stream #0:0: Video: png, rgb24(pc), 800x400, 4.80 tbr, 4.80 tbn, 4.80 tbc
    
File 'test_output.mp4' already exists. Overwrite ? [y/N] y
    
[libx264 @ 0000000004f16ba0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2
    
AVX FMA3 AVX2 LZCNT BMI2
    
[libx264 @ 0000000004f16ba0] profile High, level 3.0
    
[libx264 @ 0000000004f16ba0] 264 - core 148 r2597 e86f3a1 - H.264/MPEG-4 AVC cod
    
ec - Copyleft 2003-2015 - http://www.videolan.org/x264.html - options: cabac=1 r
    
ef=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_pski
    
p=1 chroma_qp_offset=-2 threads=12 lookahead_threads=2 sliced_threads=0 nr=0 dec
    
imate=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 'test_output.mp4':
    
  Metadata:
    
    encoder         : Lavf57.0.100
    
    Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 800x40
    
0, q=-1--1, 30 fps, 15360 tbn, 30 tbc
    
    Metadata:
    
      encoder         : Lavc57.1.100 libx264
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (png (native) -> h264 (libx264))
    
Press [q] to stop, [?] for help
    
frame=   12 fps=0.0 q=-1.0 Lsize=       3kB time=00:00:00.33 bitrate=  62.2kbits
    
/s dup=10 drop=0
    
video:2kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing ove
    
rhead: 60.557274%
    
[libx264 @ 0000000004f16ba0] frame I:1     Avg QP:10.12  size:   566
    
[libx264 @ 0000000004f16ba0] frame P:3     Avg QP:18.10  size:    62
    
[libx264 @ 0000000004f16ba0] frame B:8     Avg QP:13.75  size:    22
    
[libx264 @ 0000000004f16ba0] consecutive B-frames:  8.3%  0.0% 25.0% 66.7%
    
[libx264 @ 0000000004f16ba0] mb I  I16..4: 99.4%  0.0%  0.6%
    
[libx264 @ 0000000004f16ba0] mb P  I16..4:  0.0%  0.0%  0.0%  P16..4:  0.0%  0.0
    
%  0.0%  0.0%  0.0%    skip:99.9%
    
[libx264 @ 0000000004f16ba0] mb B  I16..4:  0.0%  0.0%  0.0%  B16..8:  0.1%  0.0
    
%  0.0%  direct: 0.0%  skip:99.9%  L0:37.5% L1:62.5% BI: 0.0%
    
[libx264 @ 0000000004f16ba0] 8x8 transform intra:0.0% inter:0.0%
    
[libx264 @ 0000000004f16ba0] coded y,uvDC,uvAC intra: 0.6% 0.0% 0.0% inter: 0.0%
    
 0.0% 0.0%
    
[libx264 @ 0000000004f16ba0] i16 v,h,dc,p: 96%  0%  4%  0%
    
[libx264 @ 0000000004f16ba0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 29% 18% 36%  2%  2%
    
 3%  3%  5%  1%
    
[libx264 @ 0000000004f16ba0] i8c dc,h,v,p: 100%  0%  0%  0%
    
[libx264 @ 0000000004f16ba0] Weighted P-Frames: Y:0.0% UV:0.0%
    
[libx264 @ 0000000004f16ba0] ref P L0: 50.0% 50.0%
    
[libx264 @ 0000000004f16ba0] kb/s:18.50

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