Thanks JackDesBwa. Yes I'm on a windows box, but of curiosity, how would you go about batch converting multiple .mp4 files on linux?
On Tue, Sep 17, 2019, 3:58 AM JackDesBwa <[email protected] wrote: > It seems to be Windows batch, so I personally cannot help a lot here, but I > can give some indications. > You probably can (as I usually do to check my own scripts before execution) > replace the ffmpeg command by echo (or equivalent in windows) to check if > the generated command arguments are exactly what you want and correct in > consequence. > Also, notice that fps=2 gives two images per seconds. One image every 2 > seconds is fps=0.5 > > ffmpeg -i countdown.mp4 -vf fps=0.5 countdown-%06d.png works as you would > expect on my Linux machine, so it is probably an error in variable > manipulation in batch script, with which I am not competent to help. > > JackDesBwa > > Le mar. 17 sept. 2019 à 12:22, Joseph Zaki <[email protected]> a écrit : > > > Hi everyone, > > > > I'm new to ffmpeg and having some issues batching a process. I have > several > > dozen videos that I need to extract images every 2 seconds from. > > > > I tried this script: for %%a in ("*.mp4") do ffmpeg -i %%a -vf fps=2 > > "%%~na.%%06d.png > > > > But kept getting an error: Output file is empty, nothing was encoded > (check > > -ss / -t / -frames parameters if used) > > > > Can anyone point me in the right direction on how to fix this? > > > > Cheers, > > JZ > > _______________________________________________ > > ffmpeg-user mailing list > > [email protected] > > https://ffmpeg.org/mailman/listinfo/ffmpeg-user > > > > To unsubscribe, visit link above, or email > > [email protected] with subject "unsubscribe". > _______________________________________________ > ffmpeg-user mailing list > [email protected] > https://ffmpeg.org/mailman/listinfo/ffmpeg-user > > To unsubscribe, visit link above, or email > [email protected] with subject "unsubscribe". _______________________________________________ ffmpeg-user mailing list [email protected] https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
