[FFmpeg-user] ffprobe bug in 'interlaced_frame'?

[Mark Filipak]

On 01/26/2020 03:51 PM, Carl Eugen Hoyos wrote:
> Am So., 26. Jan. 2020 um 21:50 Uhr schrieb Carl Eugen Hoyos
> <ceffmpeg at gmail.com>:
>>
>> Am So., 26. Jan. 2020 um 21:19 Uhr schrieb Mark Filipak
>> <markfilipak.windows+ffmpeg at gmail.com>:
>>
>>> On 01/26/2020 03:03 PM, Carl Eugen Hoyos wrote:
>>>> Am So., 26. Jan. 2020 um 20:51 Uhr schrieb Mark Filipak
>>>> <markfilipak.windows+ffmpeg at gmail.com>:
>>>>>
>>>>> For soft telecined videos, all frames have
>>>>> 'progressive_frame' = 1
>>>>
>>>> I may miss something but since FFmpeg does not "support" soft-telecine
>>>> why should there be an interlaced frame?
>>>
>>> Yes, ffmpeg does not make soft telecined streams. However, the soft
>>> telecined videos are inputs, not outputs.
>>
>> I don't think FFmpeg "supports" soft-telecined input streams.
>> At least not in the way once opon a time defined in an ancient NTSC
>> standard...
> 
> PS:
> We would of course see this had you provided the (necessary)
> console output.
> 
> Carl Eugen

Here you go:

C:\CMD & tiny apps\ffmpeg>ffprobe -i b:\VIDEO_TS\VTS_01_2.VOB 
-select_streams v:0 -show_frames -of flat -sexagesimal | FINDSTR /L 
"key_frame=1 top_field_first repeat_pict interlaced_frame">foo.txt
ffprobe version N-94664-g0821bc4eee Copyright (c) 2007-2019 the FFmpeg 
developers
   built with gcc 9.1.1 (GCC) 20190807
   configuration: --enable-gpl --enable-version3 --enable-sdl2 
--enable-fontconfig --enable-gnutls --enable-iconv --enable-libass 
--enable-libdav1d --enable-libbluray --enable-libfreetype 
--enable-libmp3lame --enable-libopencore-amrnb 
--enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus 
--enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora 
--enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp 
--enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg 
--enable-lzma --enable-zlib --enable-gmp --enable-libvidstab 
--enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa 
--enable-libspeex --enable-libxvid --enable-libaom --enable-libmfx 
--enable-amf --enable-ffnvcodec --enable-cuvid --enable-d3d11va 
--enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth 
--enable-libopenmpt
   libavutil      56. 33.100 / 56. 33.100
   libavcodec     58. 55.101 / 58. 55.101
   libavformat    58. 31.104 / 58. 31.104
   libavdevice    58.  9.100 / 58.  9.100
   libavfilter     7. 58.101 /  7. 58.101
   libswscale      5.  6.100 /  5.  6.100
   libswresample   3.  6.100 /  3.  6.100
   libpostproc    55.  6.100 / 55.  6.100
Input #0, mpeg, from 'b:\VIDEO_TS\VTS_01_2.VOB':
   Duration: 00:23:23.39, start: 1344.312633, bitrate: 6118 kb/s
     Stream #0:0[0x1bf]: Data: dvd_nav_packet
     Stream #0:1[0x1e0]: Video: mpeg2video (Main), yuv420p(tv, 
progressive), 720x480 [SAR 8:9 DAR 4:3], 29.97 fps, 59.94 tbr, 90k tbn, 
59.94 tbc
     Stream #0:2[0x80]: Audio: ac3, 48000 Hz, mono, fltp, 192 kb/s
     Stream #0:3[0x20]: Subtitle: dvd_subtitle
     Stream #0:4[0x21]: Subtitle: dvd_subtitle
Unsupported codec with id 100357 for input stream 0
frames.frame.0.key_frame=1
frames.frame.0.interlaced_frame=0
frames.frame.0.top_field_first=0
frames.frame.0.repeat_pict=1
frames.frame.1.interlaced_frame=1
frames.frame.1.top_field_first=1
frames.frame.1.repeat_pict=0
frames.frame.2.interlaced_frame=0
frames.frame.2.top_field_first=1
frames.frame.2.repeat_pict=1
frames.frame.3.interlaced_frame=1
frames.frame.3.top_field_first=0
frames.frame.3.repeat_pict=0

The above 3-2 pull-down continues for another 33641 frames (total: 3.7 
M-bytes).