アップデート：
ご協力いただいた皆様のおかげで、ようやく動作するようになりました。私の理解では、元のスクリプトのスレッド化に問題があり、1 枚 (または数枚) の写真しか撮影されていないときにビデオ作成コマンドが実行されていたようです。影響を受けた機能を変更した方法は次のとおりです。ありがとうございます。
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")
元の質問:
私は、Raspberry Pi 3 B 上の Python スクリプト内で、ffmpeg を使用して一連の jpg 静止画を mp4 にコンパイルしようとしています。実行しようとしているコマンドは次のとおりです。
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
Pi (または Mac ラップトップ) のコマンド ラインからそのコマンドを実行すると、完璧に動作し、約 8.6 MB の mp4 ファイルが出力されます。
そのコマンドを呼び出していると思われる Python スクリプトは次のとおりです。
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)
これを実行すると、常に約 200 KB の mp4 ファイルが出力されますが、これは実際には再生されません (VLC では)。おそらく、最初の静止画像のみが取得され、1/24 秒の長さの単一フレームの「ビデオ」であると考えられます。pi-timelapse フォルダーからスクリプトを実行していますが、フルパスで実行しているにもかかわらず、スクリプトの cwd を基準としてサブフォルダーからすべての画像を取得する %05 部分に問題があるとしか思えません。
ターミナル出力は次のとおりです。
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!
そして、これが完全なスクリプトです (ほとんどは他の人が書いたものです - 私はビデオ書き込み機能を avconv から ffmpeg に変換しようとしているだけです)。
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")
答え1
python3を搭載したRPi 2Bで次のコマンドを実行すると成功しました。
command = [
"ffmpeg", "-r", "24",
"-pattern_type", "glob", "-i", dir + "/20160205_1730???.JPG",
"-c:v", "libx264", "-vf", "fps=25",
"/tmp/" + "timelapse.mp4"
]
「20160205_1730430.JPG」のようなファイルが存在するにもかかわらず、「%03d」パターンを試したときに ffmpeg はファイルを見つけることができませんでした。しかし、それらのエラーは赤で報告され、非表示にはなりませんでした。
ブラウザでは映画を視聴できませんでしたが、mplayer では問題なく、次のように報告されました。
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