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  • FFmpeg drops last frame with filter fps/framerate

    27 juin 2019, par Dzmitry

    When I convert the same mp4 video (mime:video/mp4, fps:25) with video filter fps with value 25 ffmpeg drops one (last ?) frame everytime.
    This is log :

    [h264 @ 0x7fc89ceb3cc0] Reinit context to 960x544, pix_fmt: yuv420p
    [h264 @ 0x7fc89cfb59c0] Reinit context to 960x544, pix_fmt: yuv420p
    [libx264 @ 0x7fc89cf932c0] using cpu capabilities: MMX2 SSE2Fast LZCNT SSSE3 SSE4.2 AVX
    [libx264 @ 0x7fc89cf932c0] profile Constrained Baseline, level 5.1
    [libx264 @ 0x7fc89cf932c0] 264 - core 152 r2854 e9a5903 - H.264/MPEG-4 AVC codec - Copyleft 2003-2017 - http://www.videolan.org/x264.html - options: cabac=0 ref=1 deblock=1:0:0 analyse=0x1:0x111 me=hex subme=2 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=8 lookahead_threads=8 sliced_threads=1 slices=8 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=0 weightp=0 keyint=12 keyint_min=1 scenecut=40 intra_refresh=0 rc=crf mbtree=0 crf=23.0 qcomp=1.00 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
    [in @ 0x7fc89eeeda40] tb:1/48000 samplefmt:fltp samplerate:48000 chlayout:0x3
    [in @ 0x7fc89eeeda40] TB:0.000021 FRAME_RATE:nan SAMPLE_RATE:48000.000000
    [Parsed_aresample_1 @ 0x7fc89eeee9c0] ch:2 chl:stereo fmt:fltp r:48000Hz -> ch:2 chl:stereo fmt:fltp r:48000Hz
    [Parsed_asetnsamples_2 @ 0x7fc89eeede40] tb:0.000021 sample_rate:48000.000000 nb_channels:2.000000
    [Parsed_volume_3 @ 0x7fc89ef049c0] n:nan t:nan pts:nan precision:float volume:1.071519 volume_dB:0.600000
    [in @ 0x7fc89ef05d00] w:960 h:540 pixfmt:yuv420p tb:1/12800 fr:0/1 sar:0/1 sws_param:
    [Parsed_fps_0 @ 0x7fc89ef06a00] fps=25/1
    [Parsed_scale_2 @ 0x7fc89ef07780] w:960 h:540 flags:'bilinear' interl:0
    [Parsed_setsar_1 @ 0x7fc89ef06cc0] w:960 h:540 sar:0/1 dar:16/9 -> sar:1/1 dar:16/9
    [Parsed_scale_2 @ 0x7fc89ef07780] w:960 h:540 fmt:yuv420p sar:1/1 -> w:960 h:540 fmt:yuv420p sar:1/1 flags:0x2
    [h264 @ 0x7fc89d164c40] Reinit context to 960x544, pix_fmt: yuv420p
    [Parsed_fps_0 @ 0x7fc89ef06a00] Set first pts to 0

    [Parsed_fps_0 @ 0x7fc89ef06a00] 609 frames in, 608 frames out; 1 frames dropped, 0 frames duplicated.
    [libx264 @ 0x7fc89cf932c0] frame I:61    Avg QP:18.67  size: 44710
    [libx264 @ 0x7fc89cf932c0] frame P:547   Avg QP:21.44  size: 19455
    [libx264 @ 0x7fc89cf932c0] mb I  I16..4:  4.6%  0.0% 95.4%
    [libx264 @ 0x7fc89cf932c0] mb P  I16..4:  3.9%  0.0%  7.9%  P16..4: 43.2% 27.9% 12.9%  0.0%  0.0%    skip: 4.3%
    [libx264 @ 0x7fc89cf932c0] coded y,uvDC,uvAC intra: 77.9% 90.3% 36.3% inter: 36.2% 46.0% 2.6%
    [libx264 @ 0x7fc89cf932c0] i16 v,h,dc,p: 23% 35% 28% 14%
    [libx264 @ 0x7fc89cf932c0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 24% 23% 17%  6%  7%  6%  7%  5%  5%
    [libx264 @ 0x7fc89cf932c0] i8c dc,h,v,p: 53% 20% 19%  8%
    [libx264 @ 0x7fc89cf932c0] kb/s:4397.76
    [aac @ 0x7fc89edc6c00] Qavg: 642.230

    I’ve already tried to modify filter with parameters round=up/near/down:eof_action=pass/round

    ffmpeg -i input.mp4 -c:v libx264 -filter:v fps=fps=25 output.mp4

    I expect to get converted videos without dropped frames.

  • tag refuses to play mp4 video

    5 janvier 2015, par MightyPork

    I have a video I want to embed using the html5 video tag :

    I’ve converted it using ffmpeg :

    ffmpeg -i P6135199.MOV -vcodec libx264 -acodec aac helios.mp4

    FFMPEG output :

    [libx264 @ 0x22ac340] using cpu capabilities : MMX2 SSE2Fast SSSE3 SSE4.2
    [libx264 @ 0x22ac340] profile High 4:2:2, level 1.2, 4:2:2 8-bit
    [libx264 @ 0x22ac340] 264 - core 142 r2455 021c0dc - 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=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=15 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 ’helios.mp4’ :
      Metadata :
        comment-eng : OLYMPUS DIGITAL CAMERA                           
        comment : OLYMPUS DIGITAL CAMERA                           
        encoder : Lavf56.15.102
        Stream #0:0(eng) : Video : h264 (libx264) ([33][0][0][0] / 0x0021), yuvj422p(pc), 320x240, q=-1—1, 15 fps, 15360 tbn, 15 tbc (default)
        Metadata :
          creation_time : 2008-06-13 10:47:16
          encoder : Lavc56.13.100 libx264
    Stream mapping :
      Stream #0:0 -> #0:0 (mjpeg (native) -> h264 (libx264))
    Press [q] to stop, [?] for help
    frame=  240 fps=124 q=-1.0 Lsize=     906kB time=00:00:15.86 bitrate= 467.7kbits/s    
    video:902kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead : 0.409100%
    [libx264 @ 0x22ac340] frame I:1     Avg QP:23.71  size :  7960
    [libx264 @ 0x22ac340] frame P:123   Avg QP:23.85  size :  5255
    [libx264 @ 0x22ac340] frame B:116   Avg QP:25.41  size :  2317
    [libx264 @ 0x22ac340] consecutive B-frames :  3.3% 96.7%  0.0%  0.0%
    [libx264 @ 0x22ac340] mb I  I16..4 : 15.7% 69.0% 15.3%
    [libx264 @ 0x22ac340] mb P  I16..4 :  2.2% 13.4%  0.8%  P16..4 : 43.8% 23.1% 14.0%  0.0%  0.0%    skip : 2.8%
    [libx264 @ 0x22ac340] mb B  I16..4 :  0.3%  1.3%  0.1%  B16..8 : 42.4%  9.9%  3.0%  direct:12.2%  skip:30.9%  L0:37.2% L1:38.2% BI:24.5%
    [libx264 @ 0x22ac340] 8x8 transform intra:80.8% inter:71.9%
    [libx264 @ 0x22ac340] coded y,uvDC,uvAC intra : 76.7% 96.8% 49.7% inter : 37.8% 60.9% 5.1%
    [libx264 @ 0x22ac340] i16 v,h,dc,p : 39%  4%  8% 49%
    [libx264 @ 0x22ac340] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu : 15% 14% 39%  6%  3%  4%  3%  6% 12%
    [libx264 @ 0x22ac340] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu : 25% 11% 18%  8%  7%  7%  8%  8%  8%
    [libx264 @ 0x22ac340] i8c dc,h,v,p : 63%  7% 20% 10%
    [libx264 @ 0x22ac340] Weighted P-Frames : Y:5.7% UV:0.8%
    [libx264 @ 0x22ac340] ref P L0 : 51.4% 18.3% 20.6%  9.3%  0.4%
    [libx264 @ 0x22ac340] ref B L0 : 80.8% 19.2%
    [libx264 @ 0x22ac340] kb/s:461.52
    

    And I try to embed it as follows :

    <video src="helios.mp4" controls="controls">Get a better browser!</video>

    However, Chrome doesn’t play the video, only offers to download it (same as it did before I converted the video). Firefox has the same problem.

    I’ve tested and other mp4 files (from my phone) play just fine.

    What’s the problem ? Did I convert it wrong ?

  • Convert video with ffmpeg to have the same quality

    14 mai 2019, par zlon

    I want to make some present for my grandma. And prepare some video. Unfortunately here video player is old and could not read some file formats. She is not at home now, so I don’t know which player she has. But I have a file which is OK for here system :

    File which is in a correct format :

    General
    Complete name                            : let.avi
    Format                                   : AVI
    Format/Info                              : Audio Video Interleave
    File size                                : 688 MiB
    Duration                                 : 1 h 35 min
    Overall bit rate                         : 1 002 kb/s
    Writing application                      : VirtualDubMod 1.4.13
    Writing library                          : VirtualDub build 14328/release
    FileExtension_Invalid                    : avi

    Video
    ID                                       : 0
    Format                                   : MPEG-4 Visual
    Format profile                           : Simple@L3
    Format settings, BVOP                    : No
    Format settings, QPel                    : No
    Format settings, GMC                     : No warppoints
    Format settings, Matrix                  : Default (H.263)
    Codec ID                                 : XVID
    Codec ID/Hint                            : XviD
    Duration                                 : 1 h 35 min
    Bit rate                                 : 800 kb/s
    Width                                    : 544 pixels
    Height                                   : 416 pixels
    Display aspect ratio                     : 4:3
    Frame rate                               : 25.000 FPS
    Color space                              : YUV
    Chroma subsampling                       : 4:2:0
    Bit depth                                : 8 bits
    Scan type                                : Progressive
    Compression mode                         : Lossy
    Bits/(Pixel*Frame)                       : 0.141
    Stream size                              : 549 MiB (80%)
    Writing library                          : XviD 0.0.09 (UTC 2003-03-25)

    I have the following file, which here system could not read :

    File in the incorrect format :

    General
    Complete name                            : amf.avi
    Format                                   : AVI
    Format/Info                              : Audio Video Interleave
    Overall bit rate                         : 2 167 kb/s

    Video
    ID                                       : 0
    Format                                   : MPEG-4 Visual
    Format profile                           : Advanced Simple@L5
    Format settings                          : BVOP1
    Format settings, BVOP                    : 1
    Format settings, QPel                    : No
    Format settings, GMC                     : No warppoints
    Format settings, Matrix                  : Default (MPEG)
    Codec ID                                 : DX50
    Codec ID/Hint                            : DivX 5
    Bit rate                                 : 1 710 kb/s
    Width                                    : 720 pixels
    Height                                   : 528 pixels
    Display aspect ratio                     : 4:3
    Frame rate                               : 23.976 (24000/1001) FPS
    Color space                              : YUV
    Chroma subsampling                       : 4:2:0
    Bit depth                                : 8 bits
    Scan type                                : Progressive
    Compression mode                         : Lossy
    Bits/(Pixel*Frame)                       : 0.188
    Stream size                              : 1.15 GiB (79%)
    Writing library                          : XviD 64

    Could you help me to convert the second file to a format of the first ? (It would be nice if the output would be of the similar quality)

    I have Ubuntu, and I think ffmpeg should be able to do it.

    CROSS POSTED FROM : SE Video production.