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• Use ffmpeg to encode raw bayer_rggb8 frames as video

  5 décembre 2019, par DekiChan

  I have some industrial camera that records and outputs frames in raw bayer_rggb8 format. Frames are 1920x1080 in size, shot at 90fps. I wan’t to create video from it (format doesn’t matter much, but preferably mp4 with x264 encoding). My frames are saved on the filesystem as frame-00001.raw, frame-00002.raw etc. Every now and then there’s empty file.

  I can convert single image to say PNG with the following command :

  ffmpeg -f image2 -c:v rawvideo -pix_fmt bayer_rggb8 -s:v 1920x1080 -i frame-00400.raw output.png

  But when I try to encode it as video with the following command :

  ffmpeg -f image2 -c:v rawvideo -pix_fmt bayer_rggb8 -s:v 1920x1080 -r 90 -i frame-%05d.raw -c:v libx264 output.mp4

  I get this console output :

  Input #0, image2, from 'frame-%05d.raw':
  
    Duration: 00:00:05.26, start: 0.000000, bitrate: N/A
  
      Stream #0:0: Video: rawvideo ([186]RG[8] / 0x84752BA), bayer_rggb8, 1920x1080, 90 tbr, 90 tbn, 90 tbc
  
  File 'output.mp4' already exists. Overwrite ? [y/N] y
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (rawvideo (native) -> h264 (libx264))
  
  Press [q] to stop, [?] for help
  
  [libx264 @ 0x7fe5c400a200] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
  
  [libx264 @ 0x7fe5c400a200] profile High 4:4:4 Predictive, level 5.1, 4:4:4 8-bit
  
  [libx264 @ 0x7fe5c400a200] 264 - core 155 r2917 0a84d98 - H.264/MPEG-4 AVC codec - Copyleft 2003-2018 - 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=4 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, mp4, to 'output.mp4':
  
    Metadata:
  
      encoder         : Lavf58.29.100
  
      Stream #0:0: Video: h264 (libx264) (avc1 / 0x31637661), yuv444p, 1920x1080, q=-1--1, 90 fps, 11520 tbn, 90 tbc
  
      Metadata:
  
        encoder         : Lavc58.54.100 libx264
  
      Side data:
  
        cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
  
  frame=    0 fps=0.0 q=0.0 Lsize=       0kB time=00:00:00.00 bitrate=N/A speed=   0x
  
  video:0kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown

  The file is 262bytes big, cat output.mp4 returns this :

  ftypisomisomiso2avc1mp4fremdat�moovlmvhd�@budtaZmeta!hdlrmdirappl-ilst%�toodataLavf58.29.100%

  I can’t really spot the problem. It happens both on MacOS Catalina and Ubuntu 16.04.

• 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 :

  • 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 ?