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• Decrypting fragmented mpeg-dash using ffmpeg

  6 octobre 2022, par Sayem Prodhan Ananta

  I have an mpeg-dash which I want to decrypt. I have the CENC decryption key. But I am unable to get it working. The dash uses segment template. Here is the dash

  


  &lt;?xml version="1.0" ?>&#xA;<mpd mediapresentationduration="PT1H55M53.987S" minbuffertime="PT6.00S" profiles="urn:mpeg:dash:profile:isoff-live:2011" type="static" xmlns="urn:mpeg:dash:schema:mpd:2011">&#xA;  &#xA;  <period>&#xA;    &#xA;    <adaptationset maxheight="720" maxwidth="1280" mimetype="video/mp4" segmentalignment="true" startwithsap="1">&#xA;      <accessibility schemeiduri="urn:scte:dash:cc:cea-608:2015" value="eng"></accessibility>&#xA;      <viewpoint schemeiduri="urn:mpeg:dash:role:2011" value="vp2"></viewpoint>&#xA;      &#xA;      <contentprotection schemeiduri="urn:mpeg:dash:mp4protection:2011" value="cenc"></contentprotection>&#xA;      &#xA;      <contentprotection schemeiduri="urn:uuid:9a04f079-9840-4286-ab92-e65be0885f95">&#xA;        pAIAAAEAAQCaAjwAVwBSAE0ASABFAEEARABFAFIAIAB4AG0AbABuAHMAPQAiAGgAdAB0AHAAOgAvAC8AcwBjAGgAZQBtAGEAcwAuAG0AaQBjAHIAbwBzAG8AZgB0AC4AYwBvAG0ALwBEAFIATQAvADIAMAAwADcALwAwADMALwBQAGwAYQB5AFIAZQBhAGQAeQBIAGUAYQBkAGUAcgAiACAAdgBlAHIAcwBpAG8AbgA9ACIANAAuADAALgAwAC4AMAAiAD4APABEAEEAVABBAD4APABQAFIATwBUAEUAQwBUAEkATgBGAE8APgA8AEsARQBZAEwARQBOAD4AMQA2ADwALwBLAEUAWQBMAEUATgA&#x2B;ADwAQQBMAEcASQBEAD4AQQBFAFMAQwBUAFIAPAAvAEEATABHAEkARAA&#x2B;ADwALwBQAFIATwBUAEUAQwBUAEkATgBGAE8APgA8AEsASQBEAD4AOABoAFcAMwBQAEsAeABPAEkAYwB1AGsAVwBWAHgASwBaAHgAMgA3AEMAZwA9AD0APAAvAEsASQBEAD4APABDAEgARQBDAEsAUwBVAE0APgBBAGQARgAvAFEAcwBzAHEATQBhAEEAPQA8AC8AQwBIAEUAQwBLAFMAVQBNAD4APABMAEEAXwBVAFIATAA&#x2B;AGgAdAB0AHAAOgAvAC8AcAByAC4AcwBlAHIAdgBpAGMAZQAuAGUAeABwAHIAZQBzAHMAcABsAGEAeQAuAGMAbwBtAC8AcABsAGEAeQByAGUAYQBkAHkALwBSAGkAZwBoAHQAcwBNAGEAbgBhAGcAZQByAC4AYQBzAG0AeAA8AC8ATABBAF8AVQBSAEwAPgA8AC8ARABBAFQAQQA&#x2B;ADwALwBXAFIATQBIAEUAQQBEAEUAUgA&#x2B;AA==&#xA;      </contentprotection>&#xA;      &#xA;      <contentprotection schemeiduri="urn:uuid:edef8ba9-79d6-4ace-a3c8-27dcd51d21ed">&#xA;        AAAAQ3Bzc2gAAAAA7e&#x2B;LqXnWSs6jyCfc1R0h7QAAACMIARIQPLcV8k6syyGkWVxKZx27ChoKaW50ZXJ0cnVzdCIBKg==&#xA;      </contentprotection>&#xA;      <segmenttemplate duration="6000" initialization="$RepresentationID$/init.mp4" media="$RepresentationID$/seg-$Number$.m4s" startnumber="1" timescale="1000"></segmenttemplate>&#xA;      <representation bandwidth="634478" codecs="avc1.4D401F" framerate="2997/100" height="288" scantype="progressive" width="512"></representation>&#xA;      <representation bandwidth="789637" codecs="avc1.4D401F" framerate="2997/100" height="360" scantype="progressive" width="640"></representation>&#xA;      <representation bandwidth="1562569" codecs="avc1.4D401F" framerate="2997/100" height="432" scantype="progressive" width="768"></representation>&#xA;      <representation bandwidth="2124583" codecs="avc1.4D401F" framerate="2997/100" height="720" scantype="progressive" width="1280"></representation>&#xA;    </adaptationset>&#xA;    &#xA;    <adaptationset lang="en" mimetype="audio/mp4" segmentalignment="true" startwithsap="1">&#xA;      &#xA;      <contentprotection schemeiduri="urn:mpeg:dash:mp4protection:2011" value="cenc"></contentprotection>&#xA;      &#xA;      <contentprotection schemeiduri="urn:uuid:9a04f079-9840-4286-ab92-e65be0885f95">&#xA;        pAIAAAEAAQCaAjwAVwBSAE0ASABFAEEARABFAFIAIAB4AG0AbABuAHMAPQAiAGgAdAB0AHAAOgAvAC8AcwBjAGgAZQBtAGEAcwAuAG0AaQBjAHIAbwBzAG8AZgB0AC4AYwBvAG0ALwBEAFIATQAvADIAMAAwADcALwAwADMALwBQAGwAYQB5AFIAZQBhAGQAeQBIAGUAYQBkAGUAcgAiACAAdgBlAHIAcwBpAG8AbgA9ACIANAAuADAALgAwAC4AMAAiAD4APABEAEEAVABBAD4APABQAFIATwBUAEUAQwBUAEkATgBGAE8APgA8AEsARQBZAEwARQBOAD4AMQA2ADwALwBLAEUAWQBMAEUATgA&#x2B;ADwAQQBMAEcASQBEAD4AQQBFAFMAQwBUAFIAPAAvAEEATABHAEkARAA&#x2B;ADwALwBQAFIATwBUAEUAQwBUAEkATgBGAE8APgA8AEsASQBEAD4AOABoAFcAMwBQAEsAeABPAEkAYwB1AGsAVwBWAHgASwBaAHgAMgA3AEMAZwA9AD0APAAvAEsASQBEAD4APABDAEgARQBDAEsAUwBVAE0APgBBAGQARgAvAFEAcwBzAHEATQBhAEEAPQA8AC8AQwBIAEUAQwBLAFMAVQBNAD4APABMAEEAXwBVAFIATAA&#x2B;AGgAdAB0AHAAOgAvAC8AcAByAC4AcwBlAHIAdgBpAGMAZQAuAGUAeABwAHIAZQBzAHMAcABsAGEAeQAuAGMAbwBtAC8AcABsAGEAeQByAGUAYQBkAHkALwBSAGkAZwBoAHQAcwBNAGEAbgBhAGcAZQByAC4AYQBzAG0AeAA8AC8ATABBAF8AVQBSAEwAPgA8AC8ARABBAFQAQQA&#x2B;ADwALwBXAFIATQBIAEUAQQBEAEUAUgA&#x2B;AA==&#xA;      </contentprotection>&#xA;      &#xA;      <contentprotection schemeiduri="urn:uuid:edef8ba9-79d6-4ace-a3c8-27dcd51d21ed">&#xA;        AAAAQ3Bzc2gAAAAA7e&#x2B;LqXnWSs6jyCfc1R0h7QAAACMIARIQPLcV8k6syyGkWVxKZx27ChoKaW50ZXJ0cnVzdCIBKg==&#xA;      </contentprotection>&#xA;      <segmenttemplate duration="6000" initialization="$RepresentationID$/init.mp4" media="$RepresentationID$/seg-$Number$.m4s" startnumber="1" timescale="1000"></segmenttemplate>&#xA;      <representation audiosamplingrate="48000" bandwidth="136225" codecs="mp4a.40.2">&#xA;        <audiochannelconfiguration schemeiduri="urn:mpeg:dash:23003:3:audio_channel_configuration:2011" value="2"></audiochannelconfiguration>&#xA;      </representation>&#xA;    </adaptationset>&#xA;  </period>&#xA;</mpd>&#xA;

  


  I have produced an mp4 file by combining all the segments like this

  


  init.mp4+seg-1.m4s+seg-2.m4s+....+seg-1159.m4s


  


  But I end up with following error

  


  ffmpeg version N-99631-g9018257751-anan5a-2020-10-19 Copyright (c) 2000-2020 the FFmpeg developers
  built with gcc 8 (Debian 8.3.0-6)
  configuration: --extra-version=anan5a-2020-10-19 --enable-gpl --enable-version3 --disable-shared --enable-static --enable-small --enable-avisynth --enable-chromaprint --enable-frei0r --enable-gmp --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librsvg --enable-librubberband --enable-librtmp --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtesseract --enable-libtheora --enable-libtwolame --enable-libv4l2 --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxvid --enable-libxml2 --enable-libzmq --enable-libzvbi --enable-lv2 --enable-openal --enable-opencl --enable-opengl --enable-libdrm --enable-nonfree --enable-libfdk-aac --enable-libbluray --enable-libzimg --enable-libsvtav1
  libavutil      56. 60.100 / 56. 60.100
  libavcodec     58.111.101 / 58.111.101
  libavformat    58. 62.100 / 58. 62.100
  libavdevice    58. 11.102 / 58. 11.102
  libavfilter     7. 87.100 /  7. 87.100
  libswscale      5.  8.100 /  5.  8.100
  libswresample   3.  8.100 /  3.  8.100
  libpostproc    55.  8.100 / 55.  8.100
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x557789b49300] Incorrect number of samples in encryption info
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x557789b49300] Could not find codec parameters for stream 0 (Video: h264 (avc1 / 0x31637661), none, 512x288, 616 kb/s): unspecified pixel format
Consider increasing the value for the 'analyzeduration' (0) and 'probesize' (5000000) options
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '../videos/enc.0a7bd4e9ec72b6e0-5549.mkv':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41iso5iso6
  Duration: 01:55:47.95, bitrate: 625 kb/s
    Stream #0:0(eng): Video: h264 (avc1 / 0x31637661), none, 512x288, 616 kb/s, SAR 1:1 DAR 16:9, 29.97 fps, 11988 tbr, 11988 tbn, 23976 tbc (default)
    Metadata:
      handler_name    : Bento4 Video Handler
    Side data:
      unknown side data type 24 (779 bytes)
Output #0, matroska, to '../videos/dec.0a7bd4e9ec72b6e0-5549.mkv':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41iso5iso6
    encoder         : Lavf58.62.100
    Stream #0:0(eng): Video: h264 (avc1 / 0x31637661), none, 512x288 [SAR 1:1 DAR 16:9], q=2-31, 616 kb/s, 29.97 fps, 11988 tbr, 1k tbn, 11988 tbc (default)
    Metadata:
      handler_name    : Bento4 Video Handler
    Side data:
      unknown side data type 24 (779 bytes)
Stream mapping:
  Stream #0:0 -> #0:0 (copy)
Press [q] to stop, [?] for help
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x557789b49300] Incorrect number of samples in encryption info
../videos/enc.0a7bd4e9ec72b6e0-5549.mkv: Invalid data found when processing input
frame=    0 fps=0.0 q=-1.0 Lsize=       1kB 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


  


  How can I achieve the decryption without error ??

  


• Problem with invalid metadata of a FLAC file

  14 novembre 2022, par Florian Saurwein

  i need to upload audio files (mainly WAV/FLAC) to an API. I validate these files by checking the output of ffprobe.
I have a media file at hand that seemingly fulfills all requirements of the API (Sample rate, bitrate, etc.) but has one anomaly that probably causes the rejection. (It plays fine though) The file looks like this :

  


  $ ffprobe sample.flac 
ffprobe version 4.2.4-1ubuntu0.1 Copyright (c) 2007-2020 the FFmpeg developers
  built with gcc 9 (Ubuntu 9.3.0-10ubuntu2)
  configuration: --prefix=/usr --extra-version=1ubuntu0.1 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --arch=amd64 --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librsvg --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opencl --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-nvenc --enable-chromaprint --enable-frei0r --enable-libx264 --enable-shared
  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, flac, from 'sample.flac':
  Metadata:
    ENCODER         : Easy CD-DA Extractor (http://www.poikosoft.com)
  Duration: 00:04:42.31, start: 0.000000, bitrate: 572 kb/s
    Stream #0:0: Audio: flac, 44100 Hz, stereo, s16


  


  Notice that the Metadata states, that the encoder is Easy CD-DA Extractor (http://www.poikosoft.com), however, running ffmpeg -i sample.flac -map_metadata -1 -c:a copy sample-out.flac and running ffprobe again, the actual encoder turns out to be Lavf58.29.100.

  


  $ ffprobe sample-out.flac
ffprobe version 4.2.4-1ubuntu0.1 Copyright (c) 2007-2020 the FFmpeg developers
  built with gcc 9 (Ubuntu 9.3.0-10ubuntu2)
  configuration: --prefix=/usr --extra-version=1ubuntu0.1 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --arch=amd64 --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librsvg --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opencl --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-nvenc --enable-chromaprint --enable-frei0r --enable-libx264 --enable-shared
  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, flac, from 'sample-out.flac':
  Metadata:
    encoder         : Lavf58.29.100
  Duration: 00:04:42.31, start: 0.000000, bitrate: 572 kb/s
    Stream #0:0: Audio: flac, 44100 Hz, stereo, s16


  


  Now obviously, this is caused by this weird converter software, that encodes these files and puts the wrong encoder in the file's metadata.
Now I have some questions :

  


  

  • Is this a required specification of flac files to include the encoder in the file metadata ? Because the API documentation does not state anywhere if the metadata encoder has to match the actual encoder of the audio stream or what codecs are actually allowed.

  


  • How do I go about detecting such anomalies ? Because currently, I have to copy the file with ffmpeg, check the encoder of the copied file. This process takes unnecessary compute resources.

  


  


  Best regards,
Florian

  


• why it is taking a lot of time to convert image via HTTP to video in ffmpeg ?

  20 avril 2021, par al pacino

  Below is the ffmpeg i am using to convert images into videos but It is taking around 3 minutes to convert image to 5 second video.
If I run the command on Image present on a directory then it converts images to videos very swiftly.

  


  can anyone tell what I am doing wrong ?

  


  ffmpeg -loop 1 -i 'https://cdn.pixabay.com/photo/2020/10/23/12/03/arch-5678549__340.jpg' -t 5 -vf scale=1280:780 output.mp4 

ffmpeg version n4.3.1 Copyright (c) 2000-2020 the FFmpeg developers
  built with gcc 7 (Ubuntu 7.5.0-3ubuntu1~18.04)
  configuration: --prefix= --prefix=/usr --disable-debug --disable-doc --disable-static --enable-cuda --enable-cuda-sdk --enable-cuvid --enable-libdrm --enable-ffplay --enable-gnutls --enable-gpl --enable-libass --enable-libfdk-aac --enable-libfontconfig --enable-libfreetype --enable-libmp3lame --enable-libnpp --enable-libopencore_amrnb --enable-libopencore_amrwb --enable-libopus --enable-libpulse --enable-sdl2 --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libv4l2 --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-libxcb --enable-libxvid --enable-nonfree --enable-nvenc --enable-omx --enable-openal --enable-opencl --enable-runtime-cpudetect --enable-shared --enable-vaapi --enable-vdpau --enable-version3 --enable-xlib
  libavutil      56. 51.100 / 56. 51.100
  libavcodec     58. 91.100 / 58. 91.100
  libavformat    58. 45.100 / 58. 45.100
  libavdevice    58. 10.100 / 58. 10.100
  libavfilter     7. 85.100 /  7. 85.100
  libswscale      5.  7.100 /  5.  7.100
  libswresample   3.  7.100 /  3.  7.100
  libpostproc    55.  7.100 / 55.  7.100
Input #0, image2, from 'https://cdn.pixabay.com/photo/2021/04/17/18/26/woman-6186493__340.jpg':
  Duration: 00:00:00.04, start: 0.000000, bitrate: 5538 kb/s
    Stream #0:0: Video: mjpeg (Progressive), yuvj420p(pc, bt470bg/unknown/unknown), 511x340 [SAR 1:1 DAR 511:340], 25 fps, 25 tbr, 25 tbn, 25 tbc
Stream mapping:
  Stream #0:0 -> #0:0 (mjpeg (native) -> h264 (libx264))
Press [q] to stop, [?] for help
[swscaler @ 0x5580ac8e7c40] deprecated pixel format used, make sure you did set range correctly
[libx264 @ 0x5580ac186b40] using SAR=1034/1129
[libx264 @ 0x5580ac186b40] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2 AVX512
[libx264 @ 0x5580ac186b40] profile High, level 3.2
[libx264 @ 0x5580ac186b40] 264 - core 152 r2854 e9a5903 - H.264/MPEG-4 AVC codec - Copyleft 2003-2017 - 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=12 lookahead_threads=2 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         : Lavf58.45.100
    Stream #0:0: Video: h264 (libx264) (avc1 / 0x31637661), yuvj420p(pc), 1280x780 [SAR 19929:21760 DAR 511:340], q=-1--1, 25 fps, 12800 tbn, 25 tbc
    Metadata:
      encoder         : Lavc58.91.100 libx264
    Side data:
      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A
frame=  100 fps=0.0 q=28.0 size=       0kB time=00:00:01.64 bitrate=   0.2kbits/frame=  125 fps=0.0 q=-1.0 Lsize=      90kB time=00:00:04.88 bitrate= 151.7kbits/s speed=6.79x    
video:88kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 2.618829%
[libx264 @ 0x5580ac186b40] frame I:1     Avg QP:16.31  size: 75247
[libx264 @ 0x5580ac186b40] frame P:31    Avg QP:16.13  size:   314
[libx264 @ 0x5580ac186b40] frame B:93    Avg QP:31.33  size:    49
[libx264 @ 0x5580ac186b40] consecutive B-frames:  0.8%  0.0%  0.0% 99.2%
[libx264 @ 0x5580ac186b40] mb I  I16..4: 10.6% 77.6% 11.8%
[libx264 @ 0x5580ac186b40] mb P  I16..4:  0.0%  0.0%  0.0%  P16..4:  2.5%  0.2%  0.2%  0.0%  0.0%    skip:97.2%
[libx264 @ 0x5580ac186b40] mb B  I16..4:  0.0%  0.0%  0.0%  B16..8:  0.4%  0.0%  0.0%  direct: 0.0%  skip:99.6%  L0: 8.3% L1:91.7% BI: 0.0%
[libx264 @ 0x5580ac186b40] 8x8 transform intra:77.5% inter:98.7%
[libx264 @ 0x5580ac186b40] coded y,uvDC,uvAC intra: 88.4% 95.3% 79.5% inter: 0.1% 0.5% 0.0%
[libx264 @ 0x5580ac186b40] i16 v,h,dc,p:  2%  3%  0% 95%
[libx264 @ 0x5580ac186b40] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 21% 18%  7%  6% 11% 10% 10%  8%  8%
[libx264 @ 0x5580ac186b40] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 24% 18%  7%  5% 16% 11%  9%  6%  4%
[libx264 @ 0x5580ac186b40] i8c dc,h,v,p: 33% 21% 22% 24%
[libx264 @ 0x5580ac186b40] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 0x5580ac186b40] ref P L0: 85.7%  0.1% 13.2%  1.0%
[libx264 @ 0x5580ac186b40] ref B L0: 53.6% 46.4%
[libx264 @ 0x5580ac186b40] ref B L1: 92.8%  7.2%
[libx264 @ 0x5580ac186b40] kb/s:143.20
aman@aman:~/Desktop/a$ ffmpeg -loop 1 -i 'https://cdn.pixabay.com/photo/2021/04/17/18/26/woman-6186493__340.jpg' -t 5 -vf scale=1280:780 output.webm
ffmpeg version n4.3.1 Copyright (c) 2000-2020 the FFmpeg developers
  built with gcc 7 (Ubuntu 7.5.0-3ubuntu1~18.04)
  configuration: --prefix= --prefix=/usr --disable-debug --disable-doc --disable-static --enable-cuda --enable-cuda-sdk --enable-cuvid --enable-libdrm --enable-ffplay --enable-gnutls --enable-gpl --enable-libass --enable-libfdk-aac --enable-libfontconfig --enable-libfreetype --enable-libmp3lame --enable-libnpp --enable-libopencore_amrnb --enable-libopencore_amrwb --enable-libopus --enable-libpulse --enable-sdl2 --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libv4l2 --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-libxcb --enable-libxvid --enable-nonfree --enable-nvenc --enable-omx --enable-openal --enable-opencl --enable-runtime-cpudetect --enable-shared --enable-vaapi --enable-vdpau --enable-version3 --enable-xlib
  libavutil      56. 51.100 / 56. 51.100
  libavcodec     58. 91.100 / 58. 91.100
  libavformat    58. 45.100 / 58. 45.100
  libavdevice    58. 10.100 / 58. 10.100
  libavfilter     7. 85.100 /  7. 85.100
  libswscale      5.  7.100 /  5.  7.100
  libswresample   3.  7.100 /  3.  7.100
  libpostproc    55.  7.100 / 55.  7.100
Input #0, image2, from 'https://cdn.pixabay.com/photo/2021/04/17/18/26/woman-6186493__340.jpg':
  Duration: 00:00:00.04, start: 0.000000, bitrate: 5538 kb/s
    Stream #0:0: Video: mjpeg (Progressive), yuvj420p(pc, bt470bg/unknown/unknown), 511x340 [SAR 1:1 DAR 511:340], 25 fps, 25 tbr, 25 tbn, 25 tbc
File 'output.webm' already exists. Overwrite? [y/N] y
Stream mapping:
  Stream #0:0 -> #0:0 (mjpeg (native) -> vp9 (libvpx-vp9))
Press [q] to stop, [?] for help
[swscaler @ 0x5630553879c0] deprecated pixel format used, make sure you did set range correctly
[libvpx-vp9 @ 0x563054cd2500] v1.7.0
[libvpx-vp9 @ 0x563054cd2500] Neither bitrate nor constrained quality specified, using default CRF of 32
Output #0, webm, to 'output.webm':
  Metadata:
    encoder         : Lavf58.45.100
    Stream #0:0: Video: vp9 (libvpx-vp9), yuv420p, 1280x780 [SAR 19929:21760 DAR 511:340], q=-1--1, 25 fps, 1k tbn, 25 tbc
    Metadata:
      encoder         : Lavc58.91.100 libvpx-vp9
    Side data:
      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A
frame=   57 fps=0.0 q=0.0 size=       1kB time=00:00:01.28 bitrate=   3.3kbits/sframe=  103 fps=102 q=0.0 size=       1kB time=00:00:03.12 bitrate=   1.3kbits/sframe=  125 fps= 85 q=0.0 Lsize=      51kB time=00:00:04.96 bitrate=  84.0kbits/s speed=3.37x    
video:50kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 2.571023%