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I am trying to encode batch mkv videos which will give a output with a watermark in it.

But when I add the -vf 840:480 or other resolution (like 720p or 1080p), it don't run but without -vf scale it works fine but I need to set resolution for the video.

Without -vf

for %%I in ("*.mkv") do ffmpeg.exe -i "%%I" -i a.png -filter_complex "[0:v][1:v] overlay=25:25:enable='between(t,0,20)'" -map 0 -vf scale=840:480 -codec:v libx264 -preset veryfast -crf 18 -codec:a copy "480\%%~nI.mkv"

With -vf

for %%I in ("*.mkv") do ffmpeg.exe -i "%%I" -i a.png -filter_complex "[0:v][1:v] overlay=25:25:enable='between(t,0,20)'" -map 0 -vf scale=840:480 -codec:v libx264 -preset veryfast -crf 18 -codec:a copy "480\%%~nI.mkv"

Please help me with how to run the command with -vf scale

1 Answer 1

0

Use

for %%I in ("*.mkv") do ffmpeg.exe -i "%%I" -i a.png -filter_complex "[0:v][1:v] overlay=25:25:enable='between(t,0,20)',scale=840:480[v]" -map [v] -map 0:a -codec:v libx264 -preset veryfast -crf 18 -codec:a copy "480\%%~nI.mkv"

All filters acting upon a stream should be within the same filtergraph.

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  • for %%I in ("*.mkv") do ffmpeg.exe -i "%%I" -i a.png -filter_complex "[0:v][1:v] overlay=25:25:enable='between(t,0,20)',scale=840:480[v]" -map 0 -codec:v libx264 -preset veryfast -crf 18 "Temp480\%%~nI.mkv" I tried to change the code and tried to us this but id didn't worked Jun 29, 2018 at 12:41
  • You need to add -map [v] and change -map 0 to -map 0:a
    – Gyan
    Jun 29, 2018 at 12:48
  • thanks mana... can you also look into this one superuser.com/questions/1335196/… Jun 29, 2018 at 13:06

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