[FFmpeg-user] Asking for help

[Carl Eugen Hoyos]

Am Di., 5. Mai 2020 um 20:06 Uhr schrieb Mohammed Bey Ahmed Khernache
<mohbeyinfo at gmail.com>:
>
> Thank you for your reply.
>
> > Complete, uncut console output missing.
> Here is the complete output.
> root at odroid:~/ffmpeg# ./ffmpeg -i
> ../dataset/encoded_with_wpp/blue_sky_fps_25.yuv.h265 -f null /dev/null
> ffmpeg version N-97619-gf90a48b Copyright (c) 2000-2020 the FFmpeg
> developers
>   built with gcc 6.5.0 (Ubuntu/Linaro 6.5.0-2ubuntu1~14.04.1) 20181026
>   configuration: --enable-gpl --enable-nonfree --enable-static
> --disable-shared --enable-pthreads --arch=arm --enable-neon --enable-thumb
> --enable-optimizations --disable-encoders
>   libavutil      56. 43.100 / 56. 43.100
>   libavcodec     58. 82.100 / 58. 82.100
>   libavformat    58. 42.102 / 58. 42.102
>   libavdevice    58.  9.103 / 58.  9.103
>   libavfilter     7. 80.100 /  7. 80.100
>   libswscale      5.  6.101 /  5.  6.101
>   libswresample   3.  6.100 /  3.  6.100
>   libpostproc    55.  6.100 / 55.  6.100
> Input #0, hevc, from '../dataset/encoded_with_wpp/blue_sky_fps_25.yuv.h265':
>   Duration: N/A, bitrate: N/A
>     Stream #0:0: Video: hevc (Main), yuv420p(tv), 1920x1080, 25 fps, 25
> tbr, 1200k tbn, 25 tbc
> Automatic encoder selection failed for output stream #0:0. Default encoder
> for format null (codec wrapped_avframe) is probably disabled. Please choose
> an encoder manually.
> Error selecting an encoder for stream 0:0
>
> > You need either
> > the rawvideo encoder or the (default) wrapped_avframe
> > encoder.
> Does it mean that to decode we need to encode?

The ffmpeg application only decodes if it also encodes.
(I suspect ffprobe does decode without encoding, never tested.)

Carl Eugen