-
- import os
- import subprocess
-
- def freezeLastFrame(tmpdir, fVideoStream, freeze_s, fVideoStreamOut):
- try:
- # import subprocess, os
-
- E = os.environ.copy()
- E.update({
- 'TMP': tmpdir,
- 'SRC': fVideoStream,
- 'FREEZE_S': str(freeze_s),
- 'DST': fVideoStreamOut
- })
-
- cmd = '''
- cd "$TMP"
-
- FFMPEG="ffmpeg -y -hide_banner -nostats"
-
- # get last frame
- NFRAMES=`ffprobe -show_streams "$SRC" 2> /dev/null | grep nb_frames | head -1 | cut -d \= -f 2`
- let "LAST_FRAME=$NFRAMES-1"
-
- $FFMPEG -i $SRC -vf select=\\'eq\(n,$LAST_FRAME\) -vframes 1 LAST_FRAME.jpg
-
- # make last-frame-frozen video
- FRAMERATE=`ffprobe -v 0 -of csv=p=0 -select_streams 0 -show_entries stream=r_frame_rate "$SRC"`
- $FFMPEG -loop 1 -framerate 1 -i LAST_FRAME.jpg -r "$FRAMERATE" -t "$FREEZE_S" LAST_FRAME.mp4 # -pix_fmt yuv420p
-
- # Produces list.txt like this:
- # file foo.mp4
- # file 'bar with spaces.mp4'
- printf "file %q\\n" "$SRC" LAST_FRAME.mp4 > list.txt
-
- # concatenate
- # $FFMPEG -f concat -safe 0 -i list.txt -c copy "$DST" # problem: sometimes get green-screen for LAST_FRAME.mp4 duration
- $FFMPEG -i "$SRC" -i LAST_FRAME.mp4 -filter_complex "[0:v] [1:v] concat=n=2:v=1 [v]" -map "[v]" "$DST"
-
- # from https://stackoverflow.com/questions/7333232/how-to-concatenate-two-mp4-files-using-ffmpeg
- '''
-
- # subprocess.Popen( cmd, env=E )
- subprocess.check_output(cmd, shell=True, env=E, executable="/bin/bash")
-
- except subprocess.CalledProcessError as e:
- print('freezeLastFrameIfVideoShorter Error:' + str(e))
-
- except:
- print('freezeLastFrameIfVideoShorter unknown Error!')
-
- return fVideoStreamOut
-
- freezeLastFrame(tmpdir='.', fVideoStream='./SampleVideo_1280x720_1mb.mp4', freeze_s=3, fVideoStreamOut='out.mp4')
-