更新：
感谢所有提供帮助的人，我终于让它工作了。我最好的理解是，这是原始脚本线程的问题，视频创建命令在只捕获一张（或几张）照片时运行。以下是我更改受影响函数的方法。谢谢！
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")
原始问题：
我正在尝试使用 ffmpeg 在 Raspberry Pi 3 B 上的 Python 脚本中将一系列 jpg 静态图片编译成 mp4。我尝试运行的命令如下：
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
如果我从 Pi（或我的 Mac 笔记本电脑）上的命令行运行该命令，它可以完美运行并输出一个~8.6MB 的 mp4 文件。
我认为调用该命令的python脚本如下：
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)
当我运行这个脚本时，它始终输出一个~200KB 的 mp4 文件，但实际上无法播放（在 VLC 中）。我最好的猜测是它只抓取了第一张静止图像，并且是 1/24 秒长的单帧“视频”。我从 pi-timelapse 文件夹运行脚本，尽管它使用完整路径执行，但我还是忍不住认为问题出在 %05 部分，该部分应该从子文件夹中提取所有图像，相对于脚本的 cwd。
这是终端输出：
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!
这是完整的脚本（大部分由其他人编写 - 我只是想将视频写入功能从 avconv 转换为 ffmpeg）：
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")
答案1
我在装有 python3 的 RPi 2B 上成功执行了以下命令
command = [
"ffmpeg", "-r", "24",
"-pattern_type", "glob", "-i", dir + "/20160205_1730???.JPG",
"-c:v", "libx264", "-vf", "fps=25",
"/tmp/" + "timelapse.mp4"
]
当我尝试“%03d”模式时，ffmpeg 找不到我的文件，即使存在“20160205_1730430.JPG”这样的文件。但这些错误以红色显示，而不是隐藏。
我无法在浏览器中观看电影，但 mplayer 没有出现问题，并报告：
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