ffmpeg encoding run a shell command

Question

How do i run this file

infile ="video.avi"
tmpfile="video_tmp.mp4"
outfile="video.mp4"
options="-vcodec libx264 -b 512k -flags +loop+mv4 -cmp 256 \
   -partitions +parti4x4+parti8x8+partp4x4+partp8x8+partb8x8 \
   -me_method hex -subq 7 -trellis 1 -refs 5 -bf 3 \
   -flags2 +bpyramid+wpred+mixed_refs+dct8x8 -coder 1 -me_range 16 \
         -g 250 -keyint_min 25 -sc_threshold 40 -i_qfactor 0.71 -qmin 10\
   -qmax 51 -qdiff 4"

ffmpeg -y -i "$infile" -an -pass 1 -threads 2 $options "$tmpfile"

ffmpeg -y -i "$infile" -acodec libfaac -ar 44100 -ab 96k -pass 2 -threads 2 $options "$tmpfile"

qt-faststart "$tmpfile" "$outfile"

Taken from here https://gist.github.com/vadimii/4621929

Shell commands is well out of my scope any help would be appreciated thanks

it is a shell script - save it to a file and then execute it using your shell interpreter e.g. bash file.sh — Jost
– Jost, Commented Oct 11, 2013 at 12:35
so the command would just be ./file video_one.mov output.mp4 — user1503606
– user1503606, Commented Oct 11, 2013 at 12:40
It is not taking any parameter, so just ./file is enough. To have one parameter, use infile=$1 and then execute with ./file video_one.... In general, try to ask more clearly so we can know what you exactly want to do with this script. — fedorqui
– fedorqui, Commented Oct 11, 2013 at 12:41
sorry i have ffmpeg installed and i am just trying to encode for H.264 Baseline Profile Level 3.0 video, up to 640 x 480 at 30 fps and i ended up at this script so i am trying to get it to run. — user1503606
– user1503606, Commented Oct 11, 2013 at 12:45

fedorqui · Accepted Answer · 2013-10-11 12:55:47Z

1

Based on what has been written in comments:

infile =$1
tmpfile="video_tmp.mp4"
outfile=$2
options="-vcodec libx264 -b 512k -flags +loop+mv4 -cmp 256 \
   -partitions +parti4x4+parti8x8+partp4x4+partp8x8+partb8x8 \
   -me_method hex -subq 7 -trellis 1 -refs 5 -bf 3 \
   -flags2 +bpyramid+wpred+mixed_refs+dct8x8 -coder 1 -me_range 16 \
         -g 250 -keyint_min 25 -sc_threshold 40 -i_qfactor 0.71 -qmin 10\
   -qmax 51 -qdiff 4"

ffmpeg -y -i "$infile" -an -pass 1 -threads 2 $options "$tmpfile"

ffmpeg -y -i "$infile" -acodec libfaac -ar 44100 -ab 96k -pass 2 -threads 2 $options "$tmpfile"

qt-faststart "$tmpfile" "$outfile"

To execute it:

Save this file as let's say my_script.
Give it executing permissions: chmod +x my_script.
Execute it givin parameters as follows:
```
./my_script input_file output_file
```

or

/bin/bash my_script input_file output_file

answered Oct 11, 2013 at 12:55

fedorqui

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2 Comments

user1503606 Over a year ago

thanks that run it but i get the error : No such file or directory last atom in file was not a moov atom i think ill try find a good gui

fedorqui Over a year ago

If you are adding the parameters without its path, make sure they are in the same path of the script. Otherwise, put their full path.

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