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• Convert SDR-JPEG to HDR-AVIF [closed]

  27 avril 2024, par Jonas Janzen

  I would like to convert a jpg file into an avif file that is to be saved in HDR10-capable metadata (PQ curve, 2020 color space, 10 bit).

  


  The idea is to save normal SDR images in HDR-capable containers so that they can be displayed in all their glory on HDR-capable displays.

  


  I want to play with inverse tone mapping, to manipulate the output, so I implemented in Python via subprocess.

  


  So far I just want the input image to be saved in AVIF as HDR and look the same at the end as before, so that I can then make changes in the next step.

  


  I used the following command for this :

  


  ffmpeg_command = [
'ffmpeg',

  


  Input File
'-i', temp_file,

  


  Used Library
'-c', 'libaom-av1',

  


  '-still-picture', '1',

  


  Output Metadata
'-pix_fmt', 'yuv420p10le',
'-strict', 'experimental',
'-color_primaries', 'bt2020',
'-color_trc', 'smpte2084',
'-colorspace', 'bt2020nc',
'-color_range', 'pc',

  


  Output File
output_file
]

  


  So far my attempts have only been successful with the HLG characteristic. Here you can see that the images are really brighter in the peaks on my HDR monitor.

  


  With the PQ characteristic curve, the images are far too oversaturated.

  


  I guess this is because the HLG curve is compatible with the gamma curve, but PQ is not.

  


  Now my question is what I need to change.

  


  Which curve does FFMpeg expect as input.

  


  In Python I can change the images mathematically without any problems.

  


  The Example Images are again tone mapped down to jpg, to show what happened.

  


  enter image description here
enter image description here

  


• FFmpeg concatenate video and add watermark

  18 avril 2020, par user7356972

  I have command to overlay two video one on other.

  



  ffmpeg -i input.mp4 -vf "movie= overlay.mov [a]; [1][a]scale2ref[2nd][ref];[2nd][ref]overlay=0:0 [c]"  output.mp4 


  



  Now I want to add water watermark and concatenate a new video append.mov in above command. I have found a command to add watermark.

  



  ffmpeg -i output.mp4 -i watermark.png -filter_complex "overlay=10:10" outputwatermark.mp4


  



  But I want to merge both the command and also need to concatenate append.mov to output.mp4.

  



  Also above overlay two video command takes too long time to process if video size is large. Any suggestion on that(should not affect quality of video) ?

  



  I tried following command to concatenate video.

  



  ffmpeg -i abc.mp4 -i ../input/overlay2.mov append.mp4


  



  The video was not concatenate, below is the output.

  



  ffmpeg version 4.2.2 Copyright (c) 2000-2019 the FFmpeg developers
  built with Apple clang version 11.0.0 (clang-1100.0.33.17)
  configuration: --prefix=/usr/local/Cellar/ffmpeg/4.2.2_2 --enable-shared --enable-pthreads --enable-version3 --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-ffplay --enable-gnutls --enable-gpl --enable-libaom --enable-libbluray --enable-libmp3lame --enable-libopus --enable-librubberband --enable-libsnappy --enable-libtesseract --enable-libtheora --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxvid --enable-lzma --enable-libfontconfig --enable-libfreetype --enable-frei0r --enable-libass --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librtmp --enable-libspeex --enable-libsoxr --enable-videotoolbox --disable-libjack --disable-indev=jack
  libavutil      56. 31.100 / 56. 31.100
  libavcodec     58. 54.100 / 58. 54.100
  libavformat    58. 29.100 / 58. 29.100
  libavdevice    58.  8.100 / 58.  8.100
  libavfilter     7. 57.100 /  7. 57.100
  libavresample   4.  0.  0 /  4.  0.  0
  libswscale      5.  5.100 /  5.  5.100
  libswresample   3.  5.100 /  3.  5.100
  libpostproc    55.  5.100 / 55.  5.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'abc.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    encoder         : Lavf58.29.100
  Duration: 00:00:37.40, start: 0.000000, bitrate: 474 kb/s
    Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 960x540 [SAR 3:4 DAR 4:3], 324 kb/s, 1k fps, 1k tbr, 16k tbn, 2k tbc (default)
    Metadata:
      handler_name    : VideoHandler
    Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, mono, fltp, 69 kb/s (default)
    Metadata:
      handler_name    : SoundHandler
Input #1, mov,mp4,m4a,3gp,3g2,mj2, from '../input/overlay2.mov':
  Metadata:
    major_brand     : qt  
    minor_version   : 537199360
    compatible_brands: qt  
    creation_time   : 2020-03-27T16:32:23.000000Z
  Duration: 00:00:37.44, start: 0.000000, bitrate: 3519 kb/s
    Stream #1:0(eng): Video: qtrle (rle  / 0x20656C72), argb(progressive), 640x352, 3295 kb/s, SAR 1:1 DAR 20:11, 25 fps, 25 tbr, 25 tbn, 25 tbc (default)
    Metadata:
      creation_time   : 2020-03-27T16:32:23.000000Z
      handler_name    : Apple Video Media Handler
      encoder         : Animation
      timecode        : 00:00:00:00
    Stream #1:1(eng): Data: none (tmcd / 0x64636D74) (default)
    Metadata:
      creation_time   : 2020-03-27T16:32:23.000000Z
      handler_name    : Time Code Media Handler
      timecode        : 00:00:00:00
File 'append.mp4' already exists. Overwrite ? [y/N] y
Stream mapping:
  Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
  Stream #0:1 -> #0:1 (aac (native) -> aac (native))
Press [q] to stop, [?] for help
[libx264 @ 0x7ff35a012200] using SAR=3/4
[libx264 @ 0x7ff35a012200] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
[libx264 @ 0x7ff35a012200] profile High, level 5.2
[libx264 @ 0x7ff35a012200] 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=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, mp4, to 'append.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    encoder         : Lavf58.29.100
    Stream #0:0(eng): Video: h264 (libx264) (avc1 / 0x31637661), yuv420p(progressive), 960x540 [SAR 3:4 DAR 4:3], q=-1--1, 1k fps, 16k tbn, 1k tbc (default)
    Metadata:
      handler_name    : VideoHandler
      encoder         : Lavc58.54.100 libx264
    Side data:
      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
    Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, mono, fltp, 69 kb/s (default)
    Metadata:
      handler_name    : SoundHandler
      encoder         : Lavc58.54.100 aac
frame=37399 fps=378 q=-1.0 Lsize=    2138kB time=00:00:37.39 bitrate= 468.4kbits/s speed=0.378x    
video:1454kB audio:221kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 27.624002%
[libx264 @ 0x7ff35a012200] frame I:150   Avg QP:11.47  size:  1655
[libx264 @ 0x7ff35a012200] frame P:9423  Avg QP:14.43  size:    52
[libx264 @ 0x7ff35a012200] frame B:27826 Avg QP:17.67  size:    27
[libx264 @ 0x7ff35a012200] consecutive B-frames:  0.8%  0.0%  0.0% 99.2%
[libx264 @ 0x7ff35a012200] mb I  I16..4: 94.0%  4.3%  1.7%
[libx264 @ 0x7ff35a012200] mb P  I16..4:  0.0%  0.0%  0.0%  P16..4:  0.1%  0.0%  0.0%  0.0%  0.0%    skip:99.8%
[libx264 @ 0x7ff35a012200] mb B  I16..4:  0.0%  0.0%  0.0%  B16..8:  0.1%  0.0%  0.0%  direct: 0.0%  skip:99.9%  L0:54.5% L1:45.5% BI: 0.1%
[libx264 @ 0x7ff35a012200] 8x8 transform intra:4.8% inter:84.4%
[libx264 @ 0x7ff35a012200] coded y,uvDC,uvAC intra: 1.6% 2.3% 2.0% inter: 0.0% 0.0% 0.0%
[libx264 @ 0x7ff35a012200] i16 v,h,dc,p: 96%  0%  3%  0%
[libx264 @ 0x7ff35a012200] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 58%  9% 28%  1%  1%  1%  1%  1%  1%
[libx264 @ 0x7ff35a012200] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 38% 22% 15%  4%  4%  5%  5%  4%  4%
[libx264 @ 0x7ff35a012200] i8c dc,h,v,p: 97%  1%  1%  0%
[libx264 @ 0x7ff35a012200] Weighted P-Frames: Y:1.9% UV:1.9%
[libx264 @ 0x7ff35a012200] ref P L0: 86.3%  8.4%  4.5%  0.8%  0.0%
[libx264 @ 0x7ff35a012200] ref B L0: 75.4% 24.0%  0.5%
[libx264 @ 0x7ff35a012200] ref B L1: 98.1%  1.9%
[libx264 @ 0x7ff35a012200] kb/s:318.42
[aac @ 0x7ff35a013a00] Qavg: 152.336


  


• FFMPEG restream m3u8 to Youtube keeps returning "Failed to update header with correct duration & filesize" after 1st segment

  12 septembre 2020, par user3263433

  I'm trying to retream a m3u8 live feed toYouTube but I keep running into errors.

  


  When watching the feed in a webplayer it works fine.

  


  The headers of the m3u8 file are as follow :

  


  #EXTM3U
#EXT-X-VERSION:6
#EXT-X-TARGETDURATION:8
#EXT-X-MEDIA-SEQUENCE:127629
#EXT-X-DISCONTINUITY-SEQUENCE:0
#EXT-X-PROGRAM-DATE-TIME:2020-09-12T12:57:13.280Z


  


  Here is the ffmpeg log :

  


  frame=  226 fps= 25 q=29.0 size=    1303kB time=00:00:07.04 bitrate=1516.2kbits/frame=  238 fps= 

    25 q=23.0 size=    1414kB time=00:00:07.52 bitrate=1540.5kbits/[https @ 0x56067993d3c0] Opening 'fileurl.ts' for reading
    frame=  250 fps= 25 q=19.0 size=    1536kB time=00:00:08.00 bitrate=1572.8kbits/frame=  251 fps= 24 q=17.0 size=    1536kB time=00:00:08.04 bitrate=1565.3kbits/[flv @ 0x560679c4be40] 
Failed to update header with correct duration.
    [flv @ 0x560679c4be40] Failed to update header with correct filesize.
    frame=  251 fps= 22 q=-1.0 Lsize=    1851kB time=00:00:09.92 bitrate=1528.0kbits/s dup=0 drop=499 speed=0.859x


  


  It seems like it loads 1 .ts file fine but fails after that.

  


  I'm currently using :

  


  ffmpeg -re -i (urlToM3U8) -codec copy -f flv rtmp://a.rtmp.youtube.com/live2/(streamkey)