[FFmpeg-user] Decklink output can't produce 1080i50

[Carl Eugen Hoyos]

2018-08-29 12:59 GMT+02:00, Mustafa Al Ani <mustafalani at gmail.com>:
> ffmpeg -f libndi_newtek -i "MED-GW-01 (IO-ENC-01-NDI-01_VR)" -f
> decklink 'DeckLink Duo (1)'
>
> ffmpeg version N-90713-g955fa23 Copyright (c) 2000-2018 the FFmpeg
> developers
>   built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.9) 20160609
>   configuration: --enable-libndi_newtek
> --extra-cflags='-I/home/ls/ffmpeg/ndi/include
> -I/home/ls/ffmpeg/decklink/Linux/include'
> --extra-ldflags=-L/home/ls/ffmpeg/ndi/lib/x86_64-linux-gnu
> --enable-libsrt --enable-ffplay --enable-decklink --enable-libx264
> --enable-nonfree --enable-gpl --enable-libfdk-aac --enable-libx265
> --enable-openssl
>   libavutil      56. 13.100 / 56. 13.100
>   libavcodec     58. 17.100 / 58. 17.100
>   libavformat    58. 11.101 / 58. 11.101
>   libavdevice    58.  2.100 / 58.  2.100
>   libavfilter     7. 15.100 /  7. 15.100
>   libswscale      5.  0.102 /  5.  0.102
>   libswresample   3.  0.101 /  3.  0.101
>   libpostproc    55.  0.100 / 55.  0.100
> Guessed Channel Layout for Input Stream #0.0 : stereo
> Input #0, libndi_newtek, from 'MED-GW-01 (IO-ENC-01-NDI-01_VR)':
>   Duration: N/A, start: 148649.520000, bitrate: 830976 kb/s
>     Stream #0:0: Audio: pcm_s16le, 48000 Hz, stereo, s16, 1536 kb/s
>     Stream #0:1: Video: rawvideo (UYVY / 0x59565955), uyvy422(top
> first), 1920x1080 [SAR 1:1 DAR 16:9], 829440 kb/s, 25 tbr, 10000k tbn
> Stream mapping:
>   Stream #0:1 -> #0:0 (rawvideo (native) -> wrapped_avframe (native))
>   Stream #0:0 -> #0:1 (pcm_s16le (native) -> pcm_s16le (native))
> Press [q] to stop, [?] for help
> [decklink @ 0x2f08b00] Found Decklink mode 1920 x 1080 with rate 25.00
> Output #0, decklink, to 'DeckLink Duo (1)':

If you test with "-loglevel debug" (and "-vframes 1"), the output will
tell you if FFmpeg knows about the field order (and tries to find an
interlaced output), search for a line "Trying to find mode for frame".

The output option "-list_formats 1" will tell you about the available
modes including field order.

Please do not top-post here, Carl Eugen