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#9315 new defect

MXF lgop created by ffmpeg plays out of order frames in Premiere Pro

Reported by:	Alex	Owned by:
Priority:	normal	Component:	undetermined
Version:	git-master	Keywords:	MXF H264
Cc:		Blocked By:
Blocking:		Reproduced by developer:	no
Analyzed by developer:	no

Description

Summary of the bug:

Remuxing h.264 L-Gop video streams in MXF containers created by Premiere Pro with FFmpeg using "ffmpeg -i input.mxf -vcodec copy output.mxf" creates MXF files that play out of order frames in Premiere Pro.

The same output files play fine in vlc and ffplay.

How to reproduce:

Create an MXF h.264 L-GOP file in Premiere Pro (also from my Canon C70 Camera).

I'm including a file: *mxf_xavc_long_gop_input.mxf* as a sample since it has frame numbers.

% ffmpeg -i mxf_xavc_long_gop_input.mxf -vcodec copy ffmpeg_mxf_output.mxf

ffmpeg version 2021-06-30-git-de8e6e67e7-full_build-www.gyan.dev Copyright (c) 2000-2021 the FFmpeg developers
  built with gcc 10.3.0 (Rev2, Built by MSYS2 project)
  configuration: --enable-gpl --enable-version3 --enable-static --disable-w32threads --disable-autodetect --enable-fontconfig --enable-iconv --enable-gnutls --enable-libxml2 --enable-gmp --enable-lzma --enable-libsnappy --enable-zlib --enable-librist --enable-libsrt --enable-libssh --enable-libzmq --enable-avisynth --enable-libbluray --enable-libcaca --enable-sdl2 --enable-libdav1d --enable-libzvbi --enable-librav1e --enable-libsvtav1 --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxvid --enable-libaom --enable-libopenjpeg --enable-libvpx --enable-libass --enable-frei0r --enable-libfreetype --enable-libfribidi --enable-libvidstab --enable-libvmaf --enable-libzimg --enable-amf --enable-cuda-llvm --enable-cuvid --enable-ffnvcodec --enable-nvdec --enable-nvenc --enable-d3d11va --enable-dxva2 --enable-libmfx --enable-libglslang --enable-vulkan --enable-opencl --enable-libcdio --enable-libgme --enable-libmodplug --enable-libopenmpt --enable-libopencore-amrwb --enable-libmp3lame --enable-libshine --enable-libtheora --enable-libtwolame --enable-libvo-amrwbenc --enable-libilbc --enable-libgsm --enable-libopencore-amrnb --enable-libopus --enable-libspeex --enable-libvorbis --enable-ladspa --enable-libbs2b --enable-libflite --enable-libmysofa --enable-librubberband --enable-libsoxr --enable-chromaprint
  libavutil      57.  0.100 / 57.  0.100
  libavcodec     59.  3.100 / 59.  3.100
  libavformat    59.  3.101 / 59.  3.101
  libavdevice    59.  0.100 / 59.  0.100
  libavfilter     8.  0.103 /  8.  0.103
  libswscale      6.  0.100 /  6.  0.100
  libswresample   4.  0.100 /  4.  0.100
  libpostproc    56.  0.100 / 56.  0.100
Guessed Channel Layout for Input Stream #0.1 : mono
Guessed Channel Layout for Input Stream #0.2 : mono
Guessed Channel Layout for Input Stream #0.3 : mono
Guessed Channel Layout for Input Stream #0.4 : mono
Input #0, mxf, from 'mxf_xavc_long_gop_input.mxf':
  Metadata:
    operational_pattern_ul: 060e2b34.04010101.0d010201.01010900
    toolkit_version_num: 5.3.0.0.1
    uid             : 4d96ec40-dc9b-11eb-8de7-00d861c7e796
    generation_uid  : 4d96ec41-dc9b-11eb-94dc-00d861c7e796
    company_name    : Adobe Inc.
    product_name    : Premiere Pro
    product_version_num: 1.0.0.0.1
    product_version : 15.2.0
    application_platform: win32
    product_uid     : 0c3919fe-46e8-11e5-a151-feff819cdc9f
    modification_date: 2021-07-04T07:41:54.468000Z
    material_package_umid: 0x060A2B340101010501010D1213000000A2E9A60199930597D73500D861C7E796
    timecode        : 00:00:00;00
  Duration: 00:00:01.00, start: 0.000000, bitrate: 12083 kb/s
  Stream #0:0: Video: h264 (High 4:2:2), yuv422p10le(tv, progressive), 1920x1080 [SAR 1:1 DAR 16:9], 29.97 fps, 29.97 tbr, 29.97 tbn
    Metadata:
      file_package_umid: 0x060A2B340101010501010D12139EDD55A8E9A601999305974D7F00D861C7E796
      file_package_name: Source Package
      track_name      : Track 2
  Stream #0:1: Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s
    Metadata:
      file_package_umid: 0x060A2B340101010501010D12139EDD55A8E9A601999305974D7F00D861C7E796
      file_package_name: Source Package
      track_name      : Track 3
  Stream #0:2: Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s
    Metadata:
      file_package_umid: 0x060A2B340101010501010D12139EDD55A8E9A601999305974D7F00D861C7E796
      file_package_name: Source Package
      track_name      : Track 4
  Stream #0:3: Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s
    Metadata:
      file_package_umid: 0x060A2B340101010501010D12139EDD55A8E9A601999305974D7F00D861C7E796
      file_package_name: Source Package
      track_name      : Track 5
  Stream #0:4: Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s
    Metadata:
      file_package_umid: 0x060A2B340101010501010D12139EDD55A8E9A601999305974D7F00D861C7E796
      file_package_name: Source Package
      track_name      : Track 6
File 'ffmpeg_mxf_output.mxf' already exists. Overwrite? [y/N] y
Stream mapping:
  Stream #0:0 -> #0:0 (copy)
Press [q] to stop, [?] for help
Output #0, mxf, to 'ffmpeg_mxf_output.mxf':
  Metadata:
    operational_pattern_ul: 060e2b34.04010101.0d010201.01010900
    toolkit_version_num: 5.3.0.0.1
    uid             : 4d96ec40-dc9b-11eb-8de7-00d861c7e796
    generation_uid  : 4d96ec41-dc9b-11eb-94dc-00d861c7e796
    timecode        : 00:00:00;00
    material_package_umid: 0x060A2B340101010501010D1213000000A2E9A60199930597D73500D861C7E796
    product_version_num: 1.0.0.0.1
    modification_date: 2021-07-04T07:41:54.468000Z
    application_platform: win32
    product_uid     : 0c3919fe-46e8-11e5-a151-feff819cdc9f
    encoder         : Lavf59.3.101
  Stream #0:0: Video: h264 (High 4:2:2), yuv422p10le(tv, progressive), 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 29.97 fps, 29.97 tbr, 29.97 tbn
    Metadata:
      file_package_umid: 0x060A2B340101010501010D12139EDD55A8E9A601999305974D7F00D861C7E796
      file_package_name: Source Package
      track_name      : Track 2
  Stream #0:1: Audio: pcm_s16le, 48000 Hz, mono, s16, 768 kb/s
    Metadata:
      file_package_umid: 0x060A2B340101010501010D12139EDD55A8E9A601999305974D7F00D861C7E796
      file_package_name: Source Package
      track_name      : Track 3
      encoder         : Lavc59.3.100 pcm_s16le
frame=   30 fps=0.0 q=-1.0 Lsize=     775kB time=00:00:01.00 bitrate=6342.9kbits/s speed= 262x
video:638kB audio:94kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 5.974101%

I will include the resuling MXF files that plays fine in vlc and ffplay, but plays out of order in premiere.

I will also include a render, from premiere pro, of the resulting file that shows the out of order frames

Attachments (3)

mxf_xavc_long_gop_input.mxf (1.4 MB ) - added by Alex 2 years ago.: Input MXF h.264 lgop file, created by premiere pro
ffmpeg_mxf_output.mxf (775.1 KB ) - added by Alex 2 years ago.: result mxf file created by ffmpeg -vcodec copy
ffmpeg_mxf_output_Premiere_Pro_Frames.mp4 (386.8 KB ) - added by Alex 2 years ago.: how Premiere Pro sees the frames in this file

Change History (7)

by Alex, 2 years ago

Attachment:	mxf_xavc_long_gop_input.mxf added

Input MXF h.264 lgop file, created by premiere pro

by Alex, 2 years ago

Attachment:	ffmpeg_mxf_output.mxf added

result mxf file created by ffmpeg -vcodec copy

by Alex, 2 years ago

Attachment:	ffmpeg_mxf_output_Premiere_Pro_Frames.mp4 added

how Premiere Pro sees the frames in this file

comment:1 by Carl Eugen Hoyos, 2 years ago

Does re-encoding lead to the same result?

comment:2 by Alex, 2 years ago

Re-encoding still produces out-of-order frames in Premiere Pro, although in a different order

I just tried re-encoding the original file with:

ffmpeg -i .\mxf_xavc_long_gop_input.mxf -c:v libx264 ffmpeg_mxf_re_encoded.mxf

ffmpeg version 2021-06-30-git-de8e6e67e7-full_build-www.gyan.dev Copyright (c) 2000-2021 the FFmpeg developers
  built with gcc 10.3.0 (Rev2, Built by MSYS2 project)
  configuration: --enable-gpl --enable-version3 --enable-static --disable-w32threads --disable-autodetect --enable-fontconfig --enable-iconv --enable-gnutls --enable-libxml2 --enable-gmp --enable-lzma --enable-libsnappy --enable-zlib --enable-librist --enable-libsrt --enable-libssh --enable-libzmq --enable-avisynth --enable-libbluray --enable-libcaca --enable-sdl2 --enable-libdav1d --enable-libzvbi --enable-librav1e --enable-libsvtav1 --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxvid --enable-libaom --enable-libopenjpeg --enable-libvpx --enable-libass --enable-frei0r --enable-libfreetype --enable-libfribidi --enable-libvidstab --enable-libvmaf --enable-libzimg --enable-amf --enable-cuda-llvm --enable-cuvid --enable-ffnvcodec --enable-nvdec --enable-nvenc --enable-d3d11va --enable-dxva2 --enable-libmfx --enable-libglslang --enable-vulkan --enable-opencl --enable-libcdio --enable-libgme --enable-libmodplug --enable-libopenmpt --enable-libopencore-amrwb --enable-libmp3lame --enable-libshine --enable-libtheora --enable-libtwolame --enable-libvo-amrwbenc --enable-libilbc --enable-libgsm --enable-libopencore-amrnb --enable-libopus --enable-libspeex --enable-libvorbis --enable-ladspa --enable-libbs2b --enable-libflite --enable-libmysofa --enable-librubberband --enable-libsoxr --enable-chromaprint
  libavutil      57.  0.100 / 57.  0.100
  libavcodec     59.  3.100 / 59.  3.100
  libavformat    59.  3.101 / 59.  3.101
  libavdevice    59.  0.100 / 59.  0.100
  libavfilter     8.  0.103 /  8.  0.103
  libswscale      6.  0.100 /  6.  0.100
  libswresample   4.  0.100 /  4.  0.100
  libpostproc    56.  0.100 / 56.  0.100
Guessed Channel Layout for Input Stream #0.1 : mono
Guessed Channel Layout for Input Stream #0.2 : mono
Guessed Channel Layout for Input Stream #0.3 : mono
Guessed Channel Layout for Input Stream #0.4 : mono
Input #0, mxf, from '.\mxf_xavc_long_gop_input.mxf':
  Metadata:
    operational_pattern_ul: 060e2b34.04010101.0d010201.01010900
    toolkit_version_num: 5.3.0.0.1
    uid             : 4d96ec40-dc9b-11eb-8de7-00d861c7e796
    generation_uid  : 4d96ec41-dc9b-11eb-94dc-00d861c7e796
    company_name    : Adobe Inc.
    product_name    : Premiere Pro
    product_version_num: 1.0.0.0.1
    product_version : 15.2.0
    application_platform: win32
    product_uid     : 0c3919fe-46e8-11e5-a151-feff819cdc9f
    modification_date: 2021-07-04T07:41:54.468000Z
    material_package_umid: 0x060A2B340101010501010D1213000000A2E9A60199930597D73500D861C7E796
    timecode        : 00:00:00;00
  Duration: 00:00:01.00, start: 0.000000, bitrate: 12083 kb/s
  Stream #0:0: Video: h264 (High 4:2:2), yuv422p10le(tv, progressive), 1920x1080 [SAR 1:1 DAR 16:9], 29.97 fps, 29.97 tbr, 29.97 tbn
    Metadata:
      file_package_umid: 0x060A2B340101010501010D12139EDD55A8E9A601999305974D7F00D861C7E796
      file_package_name: Source Package
      track_name      : Track 2
  Stream #0:1: Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s
    Metadata:
      file_package_umid: 0x060A2B340101010501010D12139EDD55A8E9A601999305974D7F00D861C7E796
      file_package_name: Source Package
      track_name      : Track 3
  Stream #0:2: Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s
    Metadata:
      file_package_umid: 0x060A2B340101010501010D12139EDD55A8E9A601999305974D7F00D861C7E796
      file_package_name: Source Package
      track_name      : Track 4
  Stream #0:3: Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s
    Metadata:
      file_package_umid: 0x060A2B340101010501010D12139EDD55A8E9A601999305974D7F00D861C7E796
      file_package_name: Source Package
      track_name      : Track 5
  Stream #0:4: Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s
    Metadata:
      file_package_umid: 0x060A2B340101010501010D12139EDD55A8E9A601999305974D7F00D861C7E796
      file_package_name: Source Package
      track_name      : Track 6
File 'ffmpeg_mxf_re_encoded.mxf' already exists. Overwrite? [y/N] y
Stream mapping:
  Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
  Stream #0:1 -> #0:1 (pcm_s24le (native) -> pcm_s16le (native))
Press [q] to stop, [?] for help
[libx264 @ 0000023e5c0b6580] using SAR=1/1
[libx264 @ 0000023e5c0b6580] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
[libx264 @ 0000023e5c0b6580] profile High 4:2:2, level 4.0, 4:2:2, 10-bit
Output #0, mxf, to 'ffmpeg_mxf_re_encoded.mxf':
  Metadata:
    operational_pattern_ul: 060e2b34.04010101.0d010201.01010900
    toolkit_version_num: 5.3.0.0.1
    uid             : 4d96ec40-dc9b-11eb-8de7-00d861c7e796
    generation_uid  : 4d96ec41-dc9b-11eb-94dc-00d861c7e796
    timecode        : 00:00:00;00
    material_package_umid: 0x060A2B340101010501010D1213000000A2E9A60199930597D73500D861C7E796
    product_version_num: 1.0.0.0.1
    modification_date: 2021-07-04T07:41:54.468000Z
    application_platform: win32
    product_uid     : 0c3919fe-46e8-11e5-a151-feff819cdc9f
    encoder         : Lavf59.3.101
  Stream #0:0: Video: h264, yuv422p10le(tv, progressive), 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 29.97 fps, 29.97 tbn
    Metadata:
      file_package_umid: 0x060A2B340101010501010D12139EDD55A8E9A601999305974D7F00D861C7E796
      file_package_name: Source Package
      track_name      : Track 2
      encoder         : Lavc59.3.100 libx264
    Side data:
      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A
  Stream #0:1: Audio: pcm_s16le, 48000 Hz, mono, s16, 768 kb/s
    Metadata:
      file_package_umid: 0x060A2B340101010501010D12139EDD55A8E9A601999305974D7F00D861C7E796
      file_package_name: Source Package
      track_name      : Track 3
      encoder         : Lavc59.3.100 pcm_s16le
frame=   30 fps=0.0 q=-1.0 Lsize=     243kB time=00:00:01.00 bitrate=1989.1kbits/s speed=2.71x
video:107kB audio:94kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 20.969059%
[libx264 @ 0000023e5c0b6580] frame I:1     Avg QP:28.41  size: 17644
[libx264 @ 0000023e5c0b6580] frame P:23    Avg QP:33.75  size:  3518
[libx264 @ 0000023e5c0b6580] frame B:6     Avg QP:41.81  size:  1848
[libx264 @ 0000023e5c0b6580] consecutive B-frames: 63.3% 26.7% 10.0%  0.0%
[libx264 @ 0000023e5c0b6580] mb I  I16..4: 52.7% 35.5% 11.8%
[libx264 @ 0000023e5c0b6580] mb P  I16..4:  1.4%  4.3%  1.7%  P16..4:  0.9%  0.4%  0.2%  0.0%  0.0%    skip:91.2%
[libx264 @ 0000023e5c0b6580] mb B  I16..4:  0.2%  0.3%  0.7%  B16..8:  4.0%  0.4%  0.1%  direct: 0.0%  skip:94.3%  L0:34.9% L1:63.5% BI: 1.6%
[libx264 @ 0000023e5c0b6580] 8x8 transform intra:49.6% inter:14.1%
[libx264 @ 0000023e5c0b6580] coded y,uvDC,uvAC intra: 11.7% 0.0% 0.0% inter: 0.3% 0.0% 0.0%
[libx264 @ 0000023e5c0b6580] i16 v,h,dc,p: 70% 26%  4%  0%
[libx264 @ 0000023e5c0b6580] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 36% 20% 41%  1%  0%  0%  0%  0%  0%
[libx264 @ 0000023e5c0b6580] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 32% 20% 26%  4%  3%  3%  4%  3%  4%
[libx264 @ 0000023e5c0b6580] i8c dc,h,v,p: 100%  0%  0%  0%
[libx264 @ 0000023e5c0b6580] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 0000023e5c0b6580] ref P L0: 74.1% 16.7%  9.2%
[libx264 @ 0000023e5c0b6580] ref B L0: 84.7% 13.3%  2.0%
[libx264 @ 0000023e5c0b6580] kb/s:876.32

Digging a bit deeper, it seems that the original file has all the frames in order, whereas the resulting files have the frames out of order, and Premiere Pro doesn't seem to want to deal with it.

Original file:

ffprobe -show_frames -select_streams v:0 .\mxf_xavc_long_gop_input.mxf

[FRAME]
media_type=video
stream_index=0
key_frame=0
pkt_pts=0
pkt_pts_time=0.000000
pkt_dts=0
pkt_dts_time=0.000000
best_effort_timestamp=0
best_effort_timestamp_time=0.000000
pkt_duration=1
pkt_duration_time=0.033367
pkt_pos=204800
pkt_size=96750
width=1920
height=1080
pix_fmt=yuv422p10le
sample_aspect_ratio=1:1
pict_type=B
coded_picture_number=1
display_picture_number=0
interlaced_frame=0
top_field_first=0
repeat_pict=0
color_range=tv
color_space=unknown
color_primaries=unknown
color_transfer=unknown
chroma_location=left
[/FRAME]
[FRAME]
media_type=video
stream_index=0
key_frame=0
pkt_pts=1
pkt_pts_time=0.033367
pkt_dts=1
pkt_dts_time=0.033367
best_effort_timestamp=1
best_effort_timestamp_time=0.033367
pkt_duration=1
pkt_duration_time=0.033367
pkt_pos=323072
pkt_size=10779
width=1920
height=1080
pix_fmt=yuv422p10le
sample_aspect_ratio=1:1
pict_type=B
coded_picture_number=2
display_picture_number=0
interlaced_frame=0
top_field_first=0
repeat_pict=0
color_range=tv
color_space=unknown
color_primaries=unknown
color_transfer=unknown
chroma_location=left
[/FRAME]
... etc

Result file (of remux)

ffprobe -show_frames -select_streams v:0 .\ffmpeg_mxf_output.mxf

[FRAME]
media_type=video
stream_index=0
key_frame=0
pkt_pts=1
pkt_pts_time=0.033367
pkt_dts=1
pkt_dts_time=0.033367
best_effort_timestamp=1
best_effort_timestamp_time=0.033367
pkt_duration=1
pkt_duration_time=0.033367
pkt_pos=83968
pkt_size=96750
width=1920
height=1080
pix_fmt=yuv422p10le
sample_aspect_ratio=1:1
pict_type=B
coded_picture_number=1
display_picture_number=0
interlaced_frame=0
top_field_first=0
repeat_pict=0
color_range=tv
color_space=unknown
color_primaries=unknown
color_transfer=unknown
chroma_location=left
[/FRAME]
[FRAME]
media_type=video
stream_index=0
key_frame=0
pkt_pts=2
pkt_pts_time=0.066733
pkt_dts=2
pkt_dts_time=0.066733
best_effort_timestamp=2
best_effort_timestamp_time=0.066733
pkt_duration=1
pkt_duration_time=0.033367
pkt_pos=185344
pkt_size=10779
width=1920
height=1080
pix_fmt=yuv422p10le
sample_aspect_ratio=1:1
pict_type=B
coded_picture_number=2
display_picture_number=0
interlaced_frame=0
top_field_first=0
repeat_pict=0
color_range=tv
color_space=unknown
color_primaries=unknown
color_transfer=unknown
chroma_location=left
[/FRAME]
[FRAME]
media_type=video
stream_index=0
key_frame=1
pkt_pts=0
pkt_pts_time=0.000000
pkt_dts=N/A
pkt_dts_time=N/A
best_effort_timestamp=0
best_effort_timestamp_time=0.000000
pkt_duration=1
pkt_duration_time=0.033367
pkt_pos=7168
pkt_size=72613
width=1920
height=1080
pix_fmt=yuv422p10le
sample_aspect_ratio=1:1
pict_type=I
coded_picture_number=0
display_picture_number=0
interlaced_frame=0
top_field_first=0
repeat_pict=0
color_range=tv
color_space=unknown
color_primaries=unknown
color_transfer=unknown
chroma_location=left
[/FRAME]
etc...

Re-Encoded file

ffprobe -show_frames -select_streams v:0 .\ffmpeg_mxf_re_encoded.mxf
[FRAME]
media_type=video
stream_index=0
key_frame=1
pkt_pts=0
pkt_pts_time=0.000000
pkt_dts=2
pkt_dts_time=0.066733
best_effort_timestamp=0
best_effort_timestamp_time=0.000000
pkt_duration=1
pkt_duration_time=0.033367
pkt_pos=7168
pkt_size=17644
width=1920
height=1080
pix_fmt=yuv422p10le
sample_aspect_ratio=1:1
pict_type=I
coded_picture_number=0
display_picture_number=0
interlaced_frame=0
top_field_first=0
repeat_pict=0
color_range=tv
color_space=unknown
color_primaries=unknown
color_transfer=unknown
chroma_location=left
[SIDE_DATA]
side_data_type=H.26[45] User Data Unregistered SEI message
[/SIDE_DATA]
[/FRAME]
[FRAME]
media_type=video
stream_index=0
key_frame=0
pkt_pts=2
pkt_pts_time=0.066733
pkt_dts=3
pkt_dts_time=0.100100
best_effort_timestamp=2
best_effort_timestamp_time=0.066733
pkt_duration=1
pkt_duration_time=0.033367
pkt_pos=50176
pkt_size=2227
width=1920
height=1080
pix_fmt=yuv422p10le
sample_aspect_ratio=1:1
pict_type=B
coded_picture_number=2
display_picture_number=0
interlaced_frame=0
top_field_first=0
repeat_pict=0
color_range=tv
color_space=unknown
color_primaries=unknown
color_transfer=unknown
chroma_location=left
[/FRAME]
[FRAME]
media_type=video
stream_index=0
key_frame=0
pkt_pts=1
pkt_pts_time=0.033367
pkt_dts=4
pkt_dts_time=0.133467
best_effort_timestamp=4
best_effort_timestamp_time=0.133467
pkt_duration=1
pkt_duration_time=0.033367
pkt_pos=29184
pkt_size=16777
width=1920
height=1080
pix_fmt=yuv422p10le
sample_aspect_ratio=1:1
pict_type=P
coded_picture_number=1
display_picture_number=0
interlaced_frame=0
top_field_first=0
repeat_pict=0
color_range=tv
color_space=unknown
color_primaries=unknown
color_transfer=unknown
chroma_location=left
[/FRAME]
etc

comment:3 by Tomas Härdin, 2 years ago

I took a quick look using mxfdump and ffprobe

ffprobe -show_packets -select_streams v:0 mxf_xavc_long_gop_input.mxf

[PACKET]
codec_type=video
stream_index=0
pts=2
pts_time=0.066733
dts=-1
dts_time=-0.033367
duration=1
duration_time=0.033367
convergence_duration=N/A
convergence_duration_time=N/A
size=72613
pos=111104
flags=K_
[/PACKET]
[PACKET]
codec_type=video
stream_index=0
pts=0
pts_time=0.000000
dts=0
dts_time=0.000000
duration=1
duration_time=0.033367
convergence_duration=N/A
convergence_duration_time=N/A
size=96750
pos=204800
flags=__
[/PACKET]
[PACKET]
codec_type=video
stream_index=0
pts=1
pts_time=0.033367
dts=1
dts_time=0.033367
duration=1
duration_time=0.033367
convergence_duration=N/A
convergence_duration_time=N/A
size=10779
pos=323072
flags=__
[/PACKET]

mxfdump -i mxf_xavc_long_gop_input.mxf

 Bytestream Order:
  EditUnit   0 for stream 0 is at 0x00000000, Flags=c4  *Exact*
  EditUnit   0 for stream 1 is at 0x00000200, Flags=c4  *Exact*
  EditUnit   0 for stream 2 is at 0x00011e00, Flags=c4  *Exact*
  EditUnit   0 for stream 3 is at 0x00013200, Flags=c4  *Exact*
  EditUnit   0 for stream 4 is at 0x00014600, Flags=c4  *Exact*
  EditUnit   0 for stream 5 is at 0x00015a00, Flags=c4  *Exact*
  EditUnit   1 for stream 0 is at 0x00016e00, Flags=13  *Exact*
  EditUnit   1 for stream 1 is at 0x00017000, Flags=13  *Exact*
  EditUnit   1 for stream 2 is at 0x0002ec00, Flags=13  *Exact*
  EditUnit   1 for stream 3 is at 0x00030000, Flags=13  *Exact*
  EditUnit   1 for stream 4 is at 0x00031400, Flags=13  *Exact*
  EditUnit   1 for stream 5 is at 0x00032800, Flags=13  *Exact*
  EditUnit   2 for stream 0 is at 0x00033c00, Flags=13  *Exact*
  EditUnit   2 for stream 1 is at 0x00033e00, Flags=13  *Exact*
  EditUnit   2 for stream 2 is at 0x00036a00, Flags=13  *Exact*
  EditUnit   2 for stream 3 is at 0x00037e00, Flags=13  *Exact*
  EditUnit   2 for stream 4 is at 0x00039200, Flags=13  *Exact*
  EditUnit   2 for stream 5 is at 0x0003a600, Flags=13  *Exact*
[snip]
 Presentation Order:
  EditUnit   0 for stream 0 is at 0x00000000, Flags=c4  *Exact*
  EditUnit   0 for stream 1 is at 0x00017000, Flags=13  *Exact*
  EditUnit   0 for stream 2 is at 0x00011e00, Flags=c4  *Exact*
  EditUnit   0 for stream 3 is at 0x00013200, Flags=c4  *Exact*
  EditUnit   0 for stream 4 is at 0x00014600, Flags=c4  *Exact*
  EditUnit   0 for stream 5 is at 0x00015a00, Flags=c4  *Exact*
  EditUnit   1 for stream 0 is at 0x00016e00, Flags=13  *Exact*
  EditUnit   1 for stream 1 is at 0x00033e00, Flags=13  *Exact*
  EditUnit   1 for stream 2 is at 0x0002ec00, Flags=13  *Exact*
  EditUnit   1 for stream 3 is at 0x00030000, Flags=13  *Exact*
  EditUnit   1 for stream 4 is at 0x00031400, Flags=13  *Exact*
  EditUnit   1 for stream 5 is at 0x00032800, Flags=13  *Exact*
  EditUnit   2 for stream 0 is at 0x00033c00, Flags=13  *Exact*
  EditUnit   2 for stream 1 is at 0x00000200, Flags=c4  *Exact*
  EditUnit   2 for stream 2 is at 0x00036a00, Flags=13  *Exact*
  EditUnit   2 for stream 3 is at 0x00037e00, Flags=13  *Exact*
  EditUnit   2 for stream 4 is at 0x00039200, Flags=13  *Exact*
  EditUnit   2 for stream 5 is at 0x0003a600, Flags=13  *Exact*

From this we know the first three packets are one IDR frame followed by two non-referenced backward-prediction-only B frames. PTSes are: 2, 0, 1.

ffprobe -show_packets -select_streams v:0 ffmpeg_mxf_output.mxf

[PACKET]
codec_type=video
stream_index=0
pts=0
pts_time=0.000000
dts=0
dts_time=0.000000
duration=1
duration_time=0.033367
convergence_duration=N/A
convergence_duration_time=N/A
size=72613
pos=7168
flags=K_
[/PACKET]
[PACKET]
codec_type=video
stream_index=0
pts=1
pts_time=0.033367
dts=1
dts_time=0.033367
duration=1
duration_time=0.033367
convergence_duration=N/A
convergence_duration_time=N/A
size=96750
pos=83968
flags=__
[/PACKET]
[PACKET]
codec_type=video
stream_index=0
pts=2
pts_time=0.066733
dts=2
dts_time=0.066733
duration=1
duration_time=0.033367
convergence_duration=N/A
convergence_duration_time=N/A
size=10779
pos=185344
flags=__
[/PACKET]

Here the packets are in the same bytestream order as the original file, but the PTSes are messed up. mxfdump agrees with this:

mxfdump -i ffmpeg_mxf_output.mxf

 Bytestream Order:
  EditUnit   0 for stream 0 is at 0x00000000, Flags=c4  *Exact*
  EditUnit   0 for stream 1 is at 0x00000200, Flags=c4  *Exact*
  EditUnit   0 for stream 2 is at 0x00011e00, Flags=c4  *Exact*
  EditUnit   1 for stream 0 is at 0x00012c00, Flags=33  *Exact*
  EditUnit   1 for stream 1 is at 0x00012e00, Flags=33  *Exact*
  EditUnit   1 for stream 2 is at 0x0002aa00, Flags=33  *Exact*
  EditUnit   2 for stream 0 is at 0x0002b800, Flags=33  *Exact*
  EditUnit   2 for stream 1 is at 0x0002ba00, Flags=33  *Exact*
  EditUnit   2 for stream 2 is at 0x0002e600, Flags=33  *Exact*
[snip]
 Presentation Order:
  EditUnit   0 for stream 0 is at 0x00000000, Flags=c4  *Exact*
  EditUnit   0 for stream 1 is at 0x00000200, Flags=c4  *Exact*
  EditUnit   0 for stream 2 is at 0x00011e00, Flags=c4  *Exact*
  EditUnit   1 for stream 0 is at 0x00012c00, Flags=33  *Exact*
  EditUnit   1 for stream 1 is at 0x00012e00, Flags=33  *Exact*
  EditUnit   1 for stream 2 is at 0x0002aa00, Flags=33  *Exact*
  EditUnit   2 for stream 0 is at 0x0002b800, Flags=33  *Exact*
  EditUnit   2 for stream 1 is at 0x0002ba00, Flags=33  *Exact*
  EditUnit   2 for stream 2 is at 0x0002e600, Flags=33  *Exact*

The flags have also changed, but this is because mxfenc.c parses the H.264 packets to find out what they should be. I'm not sure what effect changing 13 to 33 has, if it's correct or not. Someone with knowledge of H.264 slice types should chime in.

More importantly the PTSes have changed to 0, 1, 2. I took a look at what PTSes are coming into mxfenc.c, and they're 0, 1, 2. So the error is not in mxfenc.c.

comment:4 by Alex, 2 years ago

If it helps diagnose the issue, I also had the same problem with h.264 l-gop .MXF files from my Canon C70 Cinema Camera.

In fact, my original issue was trying to remux files from my C70, and I was surprised that h.264 .MXF files created by Premiere Pro have the same issue.

If there is anything I can do to help further diagnose this, please let me know!

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