FFMPEG Cheat Sheet

Get Frame Count / Duration

ffprobe -v error -select_streams v:0 -count_packets \
    -show_entries stream=nb_read_packets -of csv=p=0 input.mp4

FFProbe - Audit Files and Create Log

Replace path with your directory path (both times). This audits for broken quicktime files and skips any that are encoded with NotchLC.

find /path -type f -name "*.mov" -exec sh -c 'dir="/path/"; ffprobe -v error -select_streams v:0 -show_entries stream=codec_name -of default=noprint_wrappers=1:nokey=1 "$1" | grep -q "NotchLC" && exit 0 || (ffprobe -v error -show_error -count_frames -select_streams v:0 -read_intervals "%+#1" -skip_frame nokey -i "$1" 2>&1 | grep -v "Referenced QT chapter track not found" && echo "$1" >> "$dir/incomplete_files.txt")' sh {} \;

CRF Low Bitrate MP4

“-crf 24” is bitrate / quality

ffmpeg -i input.mp4 -vcodec libx264 -crf 24 output.mp4

PNG+Alpha to WebM+ Alpha

ffmpeg -framerate 24 -i YourFile-%04d.png -c:v libvpx-vp9 -pix_fmt yuva420p -crf 24 YourOutPutFileNameHere.webm

%04d = number of #s in the image sequence file name

CONCAT to HAP

If Start Number is required

ffmpeg -framerate 30 -start_number 00126 -i /Users/can/Desktop/SCRATCH/_somefolder/INTER/SQNCS/Grid-Render-PNG/Grid-Render_%05d.png -c:v hap /Users/can/Desktop/SCRATCH/_somefolder/INTER/SQNCS/Grid-Render-PNG/Grid-Render_test.mov

If Start Number is not required

ffmpeg -framerate 30 -i /Users/can/Desktop/SCRATCH/_somefolder/INTER/SQNCS/Grid-Render-PNG/Grid-Render_%05d.png -c:v hap /Users/can/Desktop/SCRATCH/_somefolder/INTER/SQNCS/Grid-Render-PNG/Grid-Render_test.mov

HAP Alpha

Tiff+alpha to HAP+A

ffmpeg -framerate 30 -i /Users/can/Desktop/SCRATCH/_somefolder/INTER/SQNCS/Grid-Overlay/Grid-Overlay_%05d.tif -c:v hap -format hap_alpha -chunks 6 /Users/can/Desktop/SCRATCH/_somefolder/INTER/SQNCS/Grid-Overlay/Grid-Overlay.mov

Transcode 422 to HAP

ffmpeg -i /Users/can/Desktop/7x4k-1800frms-APR422.mov -c:v hap -chunks 6 /Users/can/Desktop/7x4k-1800frms-HAP.mov

HEVC Straight Transcode

ffmpeg -i /Users/can/Desktop/220902_somename_hapq_60fps.mov -c:v hevc /Users/can/Desktop/220902_somename_hevc.mp4

Simple Repackaging + Audio Add

This will take an existing video file and add an audio file to it.

ffmpeg -i /Volumes/SSD-01/01-Projects/somename/SOME-EXPORT/V3-HAP10.mov -i "/Users/can/Desktop/matchv3.aif" -c:a copy -shortest -y -c:v copy /Volumes/SSD-01/01-Projects/somename/SOME-EXPORT/V4-HAP10-AIF.mov

Repackaging 8-Channel Audio

ffmpeg -i /Volumes/SSD-01/01-Projects/somename/CRTV/V4-422.mov -i "/Volumes/SSD-01/01-Projects/somename/CRTV/V5B.aif" -c:a copy -shortest -y -c:v hap -chunks 10 -map 0:v:0 -map 1:a:0 /Volumes/SSD-01/01-Projects/somename/SOME-EXPORT/VID_V4-AUD_V5B-HAP.mov

Combining Files AKA Getting Hacky

This example sets an in and out of file A and file B. Then it combines them referencing a simple text file that’s just a list of the files. Then it adds audio. All files were already HAP so no transcoding needed to happen.

FILE-A

ffmpeg -ss 00:00:00.000 -i /Volumes/CT_FAST-02/somename_creative-HAPV7-chunk10.mov -t 00:08:00.000 -c copy /Users/can/Desktop/7A-StartPatch.mov

FILE-B

ffmpeg -ss 00:08:00.000 -i /Users/can/Desktop/somename_DELIVERY_V7B.mov -to 00:09:29.464 -c copy /Users/can/Desktop/7B-EndPatch.mov

COMBO

ffmpeg -f concat -safe 0 -i /Users/can/Desktop/farts.txt -c copy /Users/can/Desktop/7ABCOMBO.mov

Contents of fart.txt

file '/Users/can/Desktop/fileA.mov'
file '/Users/can/Desktop/fileBmov'

ADD AUDIO

ffmpeg -i /Users/can/Desktop/7ABCOMBO.mov -i "/Volumes/CT_FAST-02/Citizen_NYC_v10_8chan.wav" -c:a copy -shortest -y -c:v copy -map 0:v:0 -map 1:a:0 /Volumes/CT_FAST-02/somename_DELIVERY_V7B-HAP-6CHUNK.mov

Removing Audio

Remove Audio

ffmpeg -i /vidinput.mov -c:v copy -an /videonoaudio.mov

REMOVE AUDIO BATCH

cd (the directory)

then

for i in `ls *.MOV`; do ffmpeg -i $i -c:v copy -an /Volumes/SSD-01/_AudioRemove/$i; done