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• Revision 29748 : Mise à jour de l’ensembles des fonctions ... on peut passer maintenant à ...

  8 juillet 2009, par kent1@… — Log

  Mise à jour de l’ensembles des fonctions ... on peut passer maintenant à l’encodage multiple

• Metadata disappears when hevc_nvenc is used in ffmpeg (Estimated to be overwrite with null value.)

  30 janvier 2020, par Dashhh

  disappear metadata using at heve_nvenc

  • When using h264_cuvid and hevc_nvenc through ffmpeg on my server, the metadata of the files that come out of the encoding output is lost.
    There was no such thing in h264_nvenc. Also, the libx265 encoding result has metadata.

  • The ffmpeg command I used is as follows.

  ffmpeg -v debug -vsync 0 -hwaccel cuvid -hwaccel_device 2 -c:v h264_cuvid \
  
  -i ./intputfile.mp4 -map_metadata 0 -map_metadata 0:s:0 -map_metadata:s:v 0:s:v -map_metadata:s:a 0:s:a \
  
  -map 0:v -vf hwdownload,format=nv12,format=yuv420p,scale=iw*2:ih*2 \
  
  -c:v nvenc_hevc -preset slow -rc vbr_hq -pix_fmt yuv420p -b:v 5M -maxrate:v 8M -gpu 2 \
  
  -map 0:a -c:a copy \
  
  -color_range tv -colorspace bt709 -color_trc bt709 -color_primaries bt709 \
  
  hevc_output_test.mp4

  ---

  • Refer to the image below for property information on the generated file.

  

  • In the image in the link, the left pane is a playable h264_nvenc encoding deliverable file.
  • In the image in the link, the right pane is a non-replayable hevc_nvenc encoding deliverable
    file.
    • Program available for play : VLC
    • Unable to play : Ubuntu 18.04 Base Video Player, Samsung Smart TV (h264_nvenc and libx265 encoded deliverables files can be played).
  • Please refer to the image below for an error message displayed in the Player when it is not possible to play. (This is the default video player for ubuntu 18.04.)

  

  • I added ‘-f matroska’ option to the command written above and made a result.(The result file extension has also been changed to "mkv")
    Unusually, metadata exists in the process in which images are made as follows :
    

  • However, at the end of encoding, this metadata disappears again. (It looks exactly like the first image in the right pane.)

  • The path to which this information was obtained was identified by right-clicking the file in Ubuntu (18.04) to the category "Properties" - "video/audio".
    Can you tell me why this is happening ?
    If not, please advise me where I should look.

  CUDA : 10.2

  Video SDK Version (Nvenc version) : 9.1

  GPU : GeForce GTX 1080 Ti

  Driver Version : 440.33.01

• FFmpeg, MPEG4 video rotate and Windows

  25 décembre 2017, par user3768884

  I have this kind of video recorded in some Samsung Galaxy phone (info from : "ffprobe -v error -show_format -show_streams filename.mp4")

  [STREAM]
  
  index=0
  
  codec_name=h264
  
  codec_long_name=H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10
  
  profile=High
  
  codec_type=video
  
  codec_time_base=7048499/423000000
  
  codec_tag_string=avc1
  
  codec_tag=0x31637661
  
  width=1920
  
  height=1080
  
  coded_width=1920
  
  coded_height=1080
  
  has_b_frames=0
  
  sample_aspect_ratio=0:1
  
  display_aspect_ratio=0:1
  
  pix_fmt=yuv420p
  
  level=40
  
  color_range=unknown
  
  color_space=unknown
  
  color_transfer=unknown
  
  color_primaries=unknown
  
  chroma_location=left
  
  field_order=unknown
  
  timecode=N/A
  
  refs=1
  
  is_avc=true
  
  nal_length_size=4
  
  id=N/A
  
  r_frame_rate=30/1
  
  avg_frame_rate=211500000/7048499
  
  time_base=1/90000
  
  start_pts=0
  
  start_time=0.000000
  
  duration_ts=7048499
  
  duration=78.316656
  
  bit_rate=17010472
  
  max_bit_rate=N/A
  
  bits_per_raw_sample=8
  
  nb_frames=2350
  
  nb_read_frames=N/A
  
  nb_read_packets=N/A
  
  DISPOSITION:default=1
  
  DISPOSITION:dub=0
  
  DISPOSITION:original=0
  
  DISPOSITION:comment=0
  
  DISPOSITION:lyrics=0
  
  DISPOSITION:karaoke=0
  
  DISPOSITION:forced=0
  
  DISPOSITION:hearing_impaired=0
  
  DISPOSITION:visual_impaired=0
  
  DISPOSITION:clean_effects=0
  
  DISPOSITION:attached_pic=0
  
  DISPOSITION:timed_thumbnails=0
  
  TAG:rotate=90
  
  TAG:creation_time=2017-12-17T13:42:14.000000Z
  
  TAG:language=eng
  
  TAG:handler_name=VideoHandle
  
  [SIDE_DATA]
  
  side_data_type=Display Matrix
  
  displaymatrix=
  
  00000000:            0       65536           0
  
  00000001:       -65536           0           0
  
  00000002:            0           0  1073741824
  
  
  
  rotation=-90
  
  [/SIDE_DATA]
  
  [/STREAM]
  
  [STREAM]
  
  index=1
  
  codec_name=aac
  
  codec_long_name=AAC (Advanced Audio Coding)
  
  profile=LC
  
  codec_type=audio
  
  codec_time_base=1/48000
  
  codec_tag_string=mp4a
  
  codec_tag=0x6134706d
  
  sample_fmt=fltp
  
  sample_rate=48000
  
  channels=2
  
  channel_layout=stereo
  
  bits_per_sample=0
  
  id=N/A
  
  r_frame_rate=0/0
  
  avg_frame_rate=0/0
  
  time_base=1/48000
  
  start_pts=0
  
  start_time=0.000000
  
  duration_ts=3772416
  
  duration=78.592000
  
  bit_rate=126154
  
  max_bit_rate=128000
  
  bits_per_raw_sample=N/A
  
  nb_frames=3684
  
  nb_read_frames=N/A
  
  nb_read_packets=N/A
  
  DISPOSITION:default=1
  
  DISPOSITION:dub=0
  
  DISPOSITION:original=0
  
  DISPOSITION:comment=0
  
  DISPOSITION:lyrics=0
  
  DISPOSITION:karaoke=0
  
  DISPOSITION:forced=0
  
  DISPOSITION:hearing_impaired=0
  
  DISPOSITION:visual_impaired=0
  
  DISPOSITION:clean_effects=0
  
  DISPOSITION:attached_pic=0
  
  DISPOSITION:timed_thumbnails=0
  
  TAG:creation_time=2017-12-17T13:42:14.000000Z
  
  TAG:language=eng
  
  TAG:handler_name=SoundHandle
  
  [/STREAM]
  
  [FORMAT]
  
  filename=original_galaxy.mp4
  
  nb_streams=2
  
  nb_programs=0
  
  format_name=mov,mp4,m4a,3gp,3g2,mj2
  
  format_long_name=QuickTime / MOV
  
  start_time=0.000000
  
  duration=78.592000
  
  size=167808936
  
  bit_rate=17081528
  
  probe_score=100
  
  TAG:major_brand=isom
  
  TAG:minor_version=0
  
  TAG:compatible_brands=isom3gp4
  
  TAG:creation_time=2017-12-17T13:42:14.000000Z
  
  [/FORMAT]

  Since all my media players does not support rotate-knowledge, I have turned the video over again, and at the same time slightly decreased the resolution of command "ffmpeg -i "input.mp4" -vf "scale=720:1280,transpose=0,transpose=0" -c:a copy "output.mp4""

  [STREAM]
  
  index=0
  
  codec_name=h264
  
  codec_long_name=H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10
  
  profile=High
  
  codec_type=video
  
  codec_time_base=1/60
  
  codec_tag_string=avc1
  
  codec_tag=0x31637661
  
  width=720
  
  height=1280
  
  coded_width=720
  
  coded_height=1280
  
  has_b_frames=2
  
  sample_aspect_ratio=0:1
  
  display_aspect_ratio=0:1
  
  pix_fmt=yuv420p
  
  level=31
  
  color_range=unknown
  
  color_space=unknown
  
  color_transfer=unknown
  
  color_primaries=unknown
  
  chroma_location=left
  
  field_order=unknown
  
  timecode=N/A
  
  refs=1
  
  is_avc=true
  
  nal_length_size=4
  
  id=N/A
  
  r_frame_rate=30/1
  
  avg_frame_rate=30/1
  
  time_base=1/15360
  
  start_pts=0
  
  start_time=0.000000
  
  duration_ts=1203717
  
  duration=78.366992
  
  bit_rate=2570692
  
  max_bit_rate=N/A
  
  bits_per_raw_sample=8
  
  nb_frames=2351
  
  nb_read_frames=N/A
  
  nb_read_packets=N/A
  
  DISPOSITION:default=1
  
  DISPOSITION:dub=0
  
  DISPOSITION:original=0
  
  DISPOSITION:comment=0
  
  DISPOSITION:lyrics=0
  
  DISPOSITION:karaoke=0
  
  DISPOSITION:forced=0
  
  DISPOSITION:hearing_impaired=0
  
  DISPOSITION:visual_impaired=0
  
  DISPOSITION:clean_effects=0
  
  DISPOSITION:attached_pic=0
  
  DISPOSITION:timed_thumbnails=0
  
  TAG:language=eng
  
  TAG:handler_name=VideoHandler
  
  [/STREAM]
  
  [STREAM]
  
  index=1
  
  codec_name=aac
  
  codec_long_name=AAC (Advanced Audio Coding)
  
  profile=LC
  
  codec_type=audio
  
  codec_time_base=1/48000
  
  codec_tag_string=mp4a
  
  codec_tag=0x6134706d
  
  sample_fmt=fltp
  
  sample_rate=48000
  
  channels=2
  
  channel_layout=stereo
  
  bits_per_sample=0
  
  id=N/A
  
  r_frame_rate=0/0
  
  avg_frame_rate=0/0
  
  time_base=1/48000
  
  start_pts=0
  
  start_time=0.000000
  
  duration_ts=3772416
  
  duration=78.592000
  
  bit_rate=126154
  
  max_bit_rate=126154
  
  bits_per_raw_sample=N/A
  
  nb_frames=3684
  
  nb_read_frames=N/A
  
  nb_read_packets=N/A
  
  DISPOSITION:default=1
  
  DISPOSITION:dub=0
  
  DISPOSITION:original=0
  
  DISPOSITION:comment=0
  
  DISPOSITION:lyrics=0
  
  DISPOSITION:karaoke=0
  
  DISPOSITION:forced=0
  
  DISPOSITION:hearing_impaired=0
  
  DISPOSITION:visual_impaired=0
  
  DISPOSITION:clean_effects=0
  
  DISPOSITION:attached_pic=0
  
  DISPOSITION:timed_thumbnails=0
  
  TAG:language=eng
  
  TAG:handler_name=SoundHandler
  
  [/STREAM]
  
  [FORMAT]
  
  filename=from_ffmpeg.mp4
  
  nb_streams=2
  
  nb_programs=0
  
  format_name=mov,mp4,m4a,3gp,3g2,mj2
  
  format_long_name=QuickTime / MOV
  
  start_time=0.000000
  
  duration=78.592000
  
  size=26503544
  
  bit_rate=2697836
  
  probe_score=100
  
  TAG:major_brand=isom
  
  TAG:minor_version=512
  
  TAG:compatible_brands=isomiso2avc1mp41
  
  TAG:encoder=Lavf57.41.100
  
  [/FORMAT]

  This works very well in VLC, for example. However, Windows Media Player or Samsung TV does not play it. Windows Explorer does not even show a video thumbnail, so the video file is broken by Windows.

  Is not FFmpeg able to produce a standard MPEG4 file, or what the hell is this about ? I’ve tried all the alternatives presented, such as "-fflags +genpts", "-fflags genpts", "-movflags faststart", "-movflags +faststart", "pix_fmt=yuv420p" etc. but nothing worked.

  The sound I copied directly.