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Old 12th June 2019, 15:09   #61  |  Link
frank
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Join Date: Oct 2001
Location: Germany
Posts: 763
I want to set the SEI frame-packing info
Code:
h264Modify mkv3d_3d.264 -frame_packing SBS film_3d.264
but h264Modify doesn't show that info.

Code:
NAL position 0x000158A0 (88224)
  nal_unit_type:  7 "Sequence parameter set"
  profile_idc       = 100 "High"
  constraint_flags  = 16 (0x10)
      constraint_set0_flag = 0
      constraint_set1_flag = 0
      constraint_set2_flag = 0
      constraint_set3_flag = 0
      constraint_set4_flag = 1
      constraint_set5_flag = 0
  level_idc         = 40
  time_scale / 2    = 24000
  num_units_in_tick = 1001
  fixed_frame_scale = 0
Nothing changed. I miss the frame-packing field.
3D encodings with ffmpeg / x264 and --frame-packing=3 also don't show the field. But it should be there.
The other infos can be changed.

Last edited by frank; 12th June 2019 at 15:23.
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Old 17th June 2019, 20:07   #62  |  Link
videofan3d
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Join Date: Sep 2013
Location: Czech Republic
Posts: 292
Quote:
Originally Posted by frank View Post
I want to set the SEI frame-packing info
Code:
h264Modify mkv3d_3d.264 -frame_packing SBS film_3d.264
but h264Modify doesn't show that info.

Code:
NAL position 0x000158A0 (88224)
  nal_unit_type:  7 "Sequence parameter set"
  profile_idc       = 100 "High"
  constraint_flags  = 16 (0x10)
      constraint_set0_flag = 0
      constraint_set1_flag = 0
      constraint_set2_flag = 0
      constraint_set3_flag = 0
      constraint_set4_flag = 1
      constraint_set5_flag = 0
  level_idc         = 40
  time_scale / 2    = 24000
  num_units_in_tick = 1001
  fixed_frame_scale = 0
Nothing changed. I miss the frame-packing field.
3D encodings with ffmpeg / x264 and --frame-packing=3 also don't show the field. But it should be there.
The other infos can be changed.
In fact, the frame_packing info is inserted as SEI message

Code:
nal_unit_type:  6 "SEI"
  nal_ref_idc: 0
  payload_type: 45 "frame_packing_arrangement"
  payload_size: 7
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Old 18th June 2019, 12:19   #63  |  Link
frank
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Join Date: Oct 2001
Location: Germany
Posts: 763
Ok, thanks, it works, I verified it with H.264 Analyzer.

But how did you display this info?
h264Modify version 2.0 without options
Code:
h264Modify.exe film_3d.264
only shows nal_unit_type 7 but not nal_unit_type 6. This info is missing.
Please, correct the issue.

Why is h264Modify so important?
Today we can encode much faster using HW encoders - Intel qsv, NVIDIA nvenc. But this tools can't inject the SEI frame_packing info. E.g. for 3D in MP4 (Google Cardboard VR) this metadata is important.
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Old 27th August 2019, 23:31   #64  |  Link
outgoing
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Join Date: Aug 2018
Posts: 13
Also, once done the conversion of a mpls to json, the information it gives is great, but if when you do the conversion again to .mpls no longer plays the movie, at least in my case, what good is it to change parameters if later the file is not valid. Sure I'm missing something, how to change some parameter in the json and convert it properly to mpls. Sorry, maybe these are obvious questions for some but not for me.

edited:
Sorry, editing with wordpad everything fine. Thanks!!

Last edited by outgoing; 30th August 2019 at 02:26.
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