Aktualisieren:
Vielen Dank an alle, die mitgeholfen haben, ich habe es endlich zum Laufen gebracht. Meines Wissens nach war es ein Problem mit dem Threading des Originalskripts und der Befehl zur Videoerstellung wurde ausgeführt, als nur ein (oder wenige) Fotos aufgenommen worden waren. So habe ich die betroffene Funktion geändert. Danke!
def capture_image():
try:
global image_number
total_images, interval = config["total_images"], config["interval"]
while image_number < total_images:
# Start up the camera.
camera = PiCamera()
set_camera_options(camera)
# Capture a picture.
camera.capture(dir + "/image{0:05d}.jpg".format(image_number))
camera.close()
# if image_number < (config["total_images"] - 1):
image_number += 1
print(time.localtime(), image_number, total_images)
time.sleep(interval)
# else:
print("\nTime-lapse capture complete!\n")
# TODO: This doesn't pop user into the except block below :(.
sys.exit()
except (KeyboardInterrupt, SystemExit):
print("\nTime-lapse capture cancelled.\n")
Ursprüngliche Frage:
Ich versuche, mithilfe von ffmpeg eine Reihe von JPG-Standbildern in einem Python-Skript auf einem Raspberry Pi 3 B in ein MP4-Format zu kompilieren. Der Befehl, den ich auszuführen versuche, lautet wie folgt:
ffmpeg -r 24 -i /home/pi/pi-timelapse/series-2020-11-03_19-54-33/image%05d.jpg -c:v libx264 -vf fps=25 /home/pi/pi-timelapse/series-2020-11-03_19-54-33-timelapse.mp4
Wenn ich diesen Befehl von der Befehlszeile auf dem Pi (oder meinem Mac-Laptop) ausführe, funktioniert er einwandfrei und gibt eine ca. 8,6 MB große MP4-Datei aus.
Das Python-Skript, das diesen Befehl meiner Meinung nach aufruft, lautet wie folgt:
if config['create_video']:
print '\nCreating video.\n'
# os.system('avconv -framerate 20 -i ' + dir + '/image%05d.jpg -vf format=yuv420p ' + dir + '/timelapse.mp4') # noqa
command = (
"ffmpeg -r 24 -i "
+ dir
+ "/image%05d.jpg"
+ " -c:v libx264 -vf fps=25 "
+ dir
+ "-timelapse.mp4"
)
subprocess.check_output(command, shell=True)
Wenn ich das ausführe, wird durchgehend eine ca. 200 KB große MP4-Datei ausgegeben, die sich nicht wirklich abspielen lässt (in VLC). Ich vermute, dass nur das erste Standbild erfasst wird und es sich um ein 1/24 Sekunde langes Einzelbild-„Video“ handelt. Ich führe das Skript aus dem Ordner „pi-timelapse“ aus und obwohl es mit dem vollständigen Pfad ausgeführt wird, kann ich nicht anders, als zu glauben, dass das Problem im Abschnitt %05 liegt, der alle Bilder aus dem Unterordner abrufen soll, relativ zum cwd des Skripts.
Hier ist die Terminalausgabe:
pi@pi-timelapse:~/pi-timelapse $ python timelapse.py
Creating video.
ffmpeg version 4.1.6-1~deb10u1+rpt1 Copyright (c) 2000-2020 the FFmpeg developers
built with gcc 8 (Raspbian 8.3.0-6+rpi1)
configuration: --prefix=/usr --extra-version='1~deb10u1+rpt1' --toolchain=hardened --incdir=/usr/include/arm-linux-gnueabihf --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librsvg --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-omx-rpi --enable-mmal --enable-neon --enable-rpi --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --enable-shared --libdir=/usr/lib/arm-linux-gnueabihf --cpu=arm1176jzf-s --arch=arm
WARNING: library configuration mismatch
avutil configuration: --prefix=/usr --extra-version='1~deb10u1+rpt1' --toolchain=hardened --incdir=/usr/include/arm-linux-gnueabihf --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librsvg --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-omx-rpi --enable-mmal --enable-neon --enable-rpi --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --libdir=/usr/lib/arm-linux-gnueabihf/neon/vfp --cpu=cortex-a7 --arch=armv6t2 --disable-thumb --enable-shared --disable-doc --disable-programs
avcodec configuration: --prefix=/usr --extra-version='1~deb10u1+rpt1' --toolchain=hardened --incdir=/usr/include/arm-linux-gnueabihf --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librsvg --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-omx-rpi --enable-mmal --enable-neon --enable-rpi --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --libdir=/usr/lib/arm-linux-gnueabihf/neon/vfp --cpu=cortex-a7 --arch=armv6t2 --disable-thumb --enable-shared --disable-doc --disable-programs
avformat configuration: --prefix=/usr --extra-version='1~deb10u1+rpt1' --toolchain=hardened --incdir=/usr/include/arm-linux-gnueabihf --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librsvg --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-omx-rpi --enable-mmal --enable-neon --enable-rpi --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --libdir=/usr/lib/arm-linux-gnueabihf/neon/vfp --cpu=cortex-a7 --arch=armv6t2 --disable-thumb --enable-shared --disable-doc --disable-programs
avdevice configuration: --prefix=/usr --extra-version='1~deb10u1+rpt1' --toolchain=hardened --incdir=/usr/include/arm-linux-gnueabihf --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librsvg --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-omx-rpi --enable-mmal --enable-neon --enable-rpi --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --libdir=/usr/lib/arm-linux-gnueabihf/neon/vfp --cpu=cortex-a7 --arch=armv6t2 --disable-thumb --enable-shared --disable-doc --disable-programs
avfilter configuration: --prefix=/usr --extra-version='1~deb10u1+rpt1' --toolchain=hardened --incdir=/usr/include/arm-linux-gnueabihf --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librsvg --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-omx-rpi --enable-mmal --enable-neon --enable-rpi --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --libdir=/usr/lib/arm-linux-gnueabihf/neon/vfp --cpu=cortex-a7 --arch=armv6t2 --disable-thumb --enable-shared --disable-doc --disable-programs
avresample configuration: --prefix=/usr --extra-version='1~deb10u1+rpt1' --toolchain=hardened --incdir=/usr/include/arm-linux-gnueabihf --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librsvg --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-omx-rpi --enable-mmal --enable-neon --enable-rpi --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --libdir=/usr/lib/arm-linux-gnueabihf/neon/vfp --cpu=cortex-a7 --arch=armv6t2 --disable-thumb --enable-shared --disable-doc --disable-programs
swscale configuration: --prefix=/usr --extra-version='1~deb10u1+rpt1' --toolchain=hardened --incdir=/usr/include/arm-linux-gnueabihf --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librsvg --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-omx-rpi --enable-mmal --enable-neon --enable-rpi --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --libdir=/usr/lib/arm-linux-gnueabihf/neon/vfp --cpu=cortex-a7 --arch=armv6t2 --disable-thumb --enable-shared --disable-doc --disable-programs
swresample configuration: --prefix=/usr --extra-version='1~deb10u1+rpt1' --toolchain=hardened --incdir=/usr/include/arm-linux-gnueabihf --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librsvg --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-omx-rpi --enable-mmal --enable-neon --enable-rpi --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --libdir=/usr/lib/arm-linux-gnueabihf/neon/vfp --cpu=cortex-a7 --arch=armv6t2 --disable-thumb --enable-shared --disable-doc --disable-programs
postproc configuration: --prefix=/usr --extra-version='1~deb10u1+rpt1' --toolchain=hardened --incdir=/usr/include/arm-linux-gnueabihf --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librsvg --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-omx-rpi --enable-mmal --enable-neon --enable-rpi --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --libdir=/usr/lib/arm-linux-gnueabihf/neon/vfp --cpu=cortex-a7 --arch=armv6t2 --disable-thumb --enable-shared --disable-doc --disable-programs
libavutil 56. 22.100 / 56. 22.100
libavcodec 58. 35.100 / 58. 35.100
libavformat 58. 20.100 / 58. 20.100
libavdevice 58. 5.100 / 58. 5.100
libavfilter 7. 40.101 / 7. 40.101
libavresample 4. 0. 0 / 4. 0. 0
libswscale 5. 3.100 / 5. 3.100
libswresample 3. 3.100 / 3. 3.100
libpostproc 55. 3.100 / 55. 3.100
Input #0, image2, from '/home/pi/pi-timelapse/series-2020-11-03_22-25-56/image%05d.jpg':
Duration: 00:00:00.04, start: 0.000000, bitrate: N/A
Stream #0:0: Video: mjpeg, yuvj420p(pc, bt470bg/unknown/unknown), 1920x1080, 25 tbr, 25 tbn, 25 tbc
Stream mapping:
Stream #0:0 -> #0:0 (mjpeg (native) -> h264 (libx264))
Press [q] to stop, [?] for help
[libx264 @ 0x10cb220] using cpu capabilities: ARMv6 NEON
[libx264 @ 0x10cb220] profile High, level 4.0
[libx264 @ 0x10cb220] 264 - core 155 r2917 0a84d98 - H.264/MPEG-4 AVC codec - Copyleft 2003-2018 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
Output #0, mp4, to '/home/pi/pi-timelapse/series-2020-11-03_22-25-56-timelapse.mp4':
Metadata:
encoder : Lavf58.20.100
Stream #0:0: Video: h264 (libx264) (avc1 / 0x31637661), yuvj420p(pc), 1920x1080, q=-1--1, 25 fps, 12800 tbn, 25 tbc
Metadata:
encoder : Lavc58.35.100 libx264
Side data:
cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
frame= 1 fps=0.9 q=28.0 Lsize= 158kB time=00:00:00.00 bitrate=16562359.0kbits/s speed=6.84e-05x
video:157kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.498500%
[libx264 @ 0x10cb220] frame I:1 Avg QP:27.13 size:159993
[libx264 @ 0x10cb220] mb I I16..4: 3.6% 88.8% 7.6%
[libx264 @ 0x10cb220] 8x8 transform intra:88.8%
[libx264 @ 0x10cb220] coded y,uvDC,uvAC intra: 86.6% 27.3% 2.1%
[libx264 @ 0x10cb220] i16 v,h,dc,p: 4% 4% 60% 32%
[libx264 @ 0x10cb220] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 8% 5% 54% 7% 6% 5% 5% 7% 4%
[libx264 @ 0x10cb220] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 10% 6% 41% 10% 8% 7% 6% 6% 4%
[libx264 @ 0x10cb220] i8c dc,h,v,p: 73% 9% 16% 1%
[libx264 @ 0x10cb220] kb/s:31998.60
ffmpeg -r 24 -i /home/pi/pi-timelapse/series-2020-11-03_22-25-56/image%05d.jpg -c:v libx264 -vf fps=25 /home/pi/pi-timelapse/series-2020-11-03_22-25-56-timelapse.mp4
Time-lapse capture complete!
Und dies ist das vollständige Skript (größtenteils von jemand anderem geschrieben – ich versuche nur, die Videoschreibfunktion von avconv in ffmpeg zu konvertieren):
from picamera import PiCamera
import errno
import os
import sys
import threading
from datetime import datetime
from time import sleep
import yaml
import shlex
import pipes
from subprocess import check_call
import subprocess
config = yaml.safe_load(open(os.path.join(sys.path[0], "config.yml")))
image_number = 0
def create_timestamped_dir(dir):
try:
os.makedirs(dir)
except OSError as e:
if e.errno != errno.EEXIST:
raise
def set_camera_options(camera):
# Set camera resolution.
if config['resolution']:
camera.resolution = (
config['resolution']['width'],
config['resolution']['height']
)
# Set ISO.
if config['iso']:
camera.iso = config['iso']
# Set shutter speed.
if config['shutter_speed']:
camera.shutter_speed = config['shutter_speed']
# Sleep to allow the shutter speed to take effect correctly.
sleep(1)
camera.exposure_mode = 'off'
# Set white balance.
if config['white_balance']:
camera.awb_mode = 'off'
camera.awb_gains = (
config['white_balance']['red_gain'],
config['white_balance']['blue_gain']
)
# Set camera rotation
if config['rotation']:
camera.rotation = config['rotation']
return camera
def capture_image():
try:
global image_number
# Set a timer to take another picture at the proper interval after this
# picture is taken.
if (image_number < (config['total_images'] - 1)):
thread = threading.Timer(config['interval'], capture_image).start()
# Start up the camera.
camera = PiCamera()
set_camera_options(camera)
# Capture a picture.
camera.capture(dir + '/image{0:05d}.jpg'.format(image_number))
camera.close()
if (image_number < (config['total_images'] - 1)):
image_number += 1
else:
print '\nTime-lapse capture complete!\n'
# TODO: This doesn't pop user into the except block below :(.
sys.exit()
except KeyboardInterrupt, SystemExit:
print '\nTime-lapse capture cancelled.\n'
# Create directory based on current timestamp.
dir = os.path.join(
sys.path[0],
'series-' + datetime.now().strftime('%Y-%m-%d_%H-%M-%S')
)
create_timestamped_dir(dir)
# Kick off the capture process.
capture_image()
# TODO: These may not get called after the end of the threading process...
# Create an animated gif (Requires ImageMagick).
if config['create_gif']:
print '\nCreating animated gif.\n'
os.system('convert -delay 10 -loop 0 ' + dir + '/image*.jpg ' + dir + '-timelapse.gif') # noqa
# Create a video (Requires avconv - which is basically ffmpeg).
if config['create_video']:
print '\nCreating video.\n'
# os.system('avconv -framerate 20 -i ' + dir + '/image%05d.jpg -vf format=yuv420p ' + dir + '/timelapse.mp4') # noqa
command = (
"ffmpeg -r 24 -i "
+ dir
+ "/image%05d.jpg"
+ " -c:v libx264 -vf fps=25 "
+ dir
+ "-timelapse.mp4"
)
subprocess.check_output(command, shell=True)
print("\n" + command + "\n")
Antwort1
Mit dem folgenden Befehl gelang es mir auf einem RPi 2B mit python3
command = [
"ffmpeg", "-r", "24",
"-pattern_type", "glob", "-i", dir + "/20160205_1730???.JPG",
"-c:v", "libx264", "-vf", "fps=25",
"/tmp/" + "timelapse.mp4"
]
ffmpeg konnte meine Dateien nicht finden, als ich das Muster „%03d“ ausprobierte, obwohl eine Datei wie „20160205_1730430.JPG“ existierte. Aber diese Fehler wurden gemeldet – in Rot – und nicht versteckt.
Ich konnte den Film nicht in meinem Browser ansehen, aber mplayer hatte keine Probleme und meldete:
Clip info:
major_brand: isom
minor_version: 512
compatible_brands: isomiso2avc1mp41
encoder: Lavf57.71.100
Load subtitles in /tmp/
Audio: no sound
Starting playback...
Movie-Aspect is undefined - no prescaling applied.
VO: [x11] 2592x1944 => 2592x1944 Planar YV12
[swscaler @ 0x55f9ace4d420]bicubic scaler, from yuv420p to bgra using MMXEXT
[swscaler @ 0x55f9ace4d420]using unscaled yuv420p -> bgra special converter