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• 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.

• tag refuses to play mp4 video

  5 janvier 2015, par MightyPork

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

  • https://dl.dropboxusercontent.com/u/64454818/TMP/P6135199.MOV

  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 ?

• 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.