[FFmpeg-user] Automatic encoder selection failed for output stream

[Ted Park]

Hi,

> ffmpeg -y -hide_banner -threads 8 -hwaccel nvdec -hwaccel_output_format cuda -i Saving Mr Banks (2013).mkv -vf scale_cuda=-1:720 -c:v h264_nvenc -rc vbr_hq -profile:v main -minrate 1500k -maxrate 4M -bufsize 5M -acodec ac3 -ac 6 -strict experimental -ar 48000 -b:a 640k -preset slow -flags +loop -cmp chroma -subq 6 -me_range 16 -g 250 -keyint_min 25 -sc_threshold 40 -i_qfactor 0.71 -b_strategy 1 -map 0:v -map 0:m:language:ita -metadata title=Saving Mr Banks (2013) -metadata description=Films -metadata comment=Films ../Films-720p/Saving Mr Banks (2013).mp4

> Automatic encoder selection failed for output stream #0:2. Default encoder for format mp4 (codec none) is probably disabled. Please choose an encoder manually.
> Error selecting an encoder for stream 0:2

I'm thinking you end up needing to specify an encoder explicitly for stream number 2, since it’s selected by metadata, any stream could be tagged Italian.


Regards,
Ted Park