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Sintel MP4 Surround 5.1 Full
13 mai 2011, par
Mis à jour : Février 2012
Langue : English
Type : Video
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FFMPEG not working from Python subprocess.Popen but works from command line
21 novembre 2017, par Stuart ClarkeI’m trying to run a
FFMPEGscript from withinpython 3.5.2. theFFMPEGcommand runs fine from the command line but fails within the python script.The function I use to execute the
FFMPEGcommand isdef ffmpeg(args):
err = None
command = [
ffmpegcmd, '-y',
'-loglevel', loglevel
] + args
print("\n\n\n")
print(command)
print("\n\n\n")
print(" ".join(command))
ffmpeg = subprocess.Popen(command, stderr=subprocess.PIPE ,stdout=subprocess.PIPE, universal_newlines=True)
while err == None:
out, err = ffmpeg.communicate()
time.sleep(1)
if err and loglevel=='fatal':
print(" ".join(command))
raise Exception(err)
print(err)The value for args is :
['-i', '/var/www/temp/film.mp4', '-vf', 'scale=1920:1080:force_original_aspect_ratio=decrease,pad=1920:1080:x=(1920-iw)/2:y=(1080-ih)/2:color=black', '/var/www/temp/videoHD.mp4']such that the resultant command being passed to
subprocess.Popenis :['ffmpeg', '-y', '-loglevel', 'verbose', '-i', '/var/www/temp/film.mp4', '-vf', 'scale=1920:1080:force_original_aspect_ratio=decrease,pad=1920:1080:x=(1920-iw)/2:y=(1080-ih)/2:color=black', '/var/www/temp/videoHD.mp4']The value of loglevel is
verboseonly for troubleshooting but is intended to run asfatal. There are also someprintcommands only in place for troubleshooting.The reason for wanting to increase the resolution is so that it can be combined later with higher resolution videos.
The result when running from within
pythonis :ffmpeg version 3.3.4-2~16.04.york0 Copyright (c) 2000-2017 the FFmpeg developers
built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.4) 20160609
configuration: --prefix=/usr --extra-version='2~16.04.york0' --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-stripping --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmp3lame --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 --enable-shared
libavutil 55. 58.100 / 55. 58.100
libavcodec 57. 89.100 / 57. 89.100
libavformat 57. 71.100 / 57. 71.100
libavdevice 57. 6.100 / 57. 6.100
libavfilter 6. 82.100 / 6. 82.100
libavresample 3. 5. 0 / 3. 5. 0
libswscale 4. 6.100 / 4. 6.100
libswresample 2. 7.100 / 2. 7.100
libpostproc 54. 5.100 / 54. 5.100
[h264 @ 0x7f741a37a560] Reinit context to 640x368, pix_fmt: yuv420p
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/var/www/temp/film.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf57.71.100
Duration: 00:06:19.80, start: 0.000000, bitrate: 451 kb/s
Stream #0:0(und): Video: h264 (High), 1 reference frame (avc1 / 0x31637661), yuv420p(left), 640x358 (640x368), 313 kb/s, 30 fps, 30 tbr, 15360 tbn, 60 tbc (default)
Metadata:
handler_name : VideoHandler
Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 128 kb/s (default)
Metadata:
handler_name : SoundHandler
Stream mapping:
Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
Stream #0:1 -> #0:1 (aac (native) -> aac (native))
Press [q] to stop, [?] for help
[h264 @ 0x7f741a3bc700] Reinit context to 640x368, pix_fmt: yuv420p
[graph_1_in_0_1 @ 0x7f741a5315e0] tb:1/48000 samplefmt:fltp samplerate:48000 chlayout:0x3
[Parsed_scale_0 @ 0x7f741a54e000] w:1920 h:1080 flags:'bicubic' interl:0
[graph 0 input from stream 0:0 @ 0x7f741a54f6a0] w:640 h:358 pixfmt:yuv420p tb:1/15360 fr:30/1 sar:0/1 sws_param:flags=2
[Parsed_scale_0 @ 0x7f741a54e000] w:640 h:358 fmt:yuv420p sar:0/1 -> w:1920 h:1074 fmt:yuv420p sar:0/1 flags:0x4
[Parsed_pad_1 @ 0x7f741a54eac0] w:1920 h:1074 -> w:1920 h:1080 x:0 y:2 color:0x000000FF
[libx264 @ 0x7f741a5509e0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2
[libx264 @ 0x7f741a5509e0] profile High, level 4.0
[libx264 @ 0x7f741a5509e0] 264 - core 148 r2795 aaa9aa8 - H.264/MPEG-4 AVC codec - Copyleft 2003-2017 - 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 '/var/www/temp/videoHD.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf57.71.100
Stream #0:0(und): Video: h264 (libx264), 1 reference frame ([33][0][0][0] / 0x0021), yuv420p(left), 1920x1080, q=-1--1, 30 fps, 15360 tbn, 30 tbc (default)
Metadata:
handler_name : VideoHandler
encoder : Lavc57.89.100 libx264
Side data:
cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
Stream #0:1(und): Audio: aac (LC) ([64][0][0][0] / 0x0040), 48000 Hz, stereo, fltp, delay 1024, 128 kb/s (default)
Metadata:
handler_name : SoundHandler
encoder : Lavc57.89.100 aacThis results in a file with no content.
When I run the command from the command line I need to add single quotes around the
-vfvideo filtersscale=1920:1080:force_original_aspect_ratio=decrease,pad=1920:1080:x=(1920-iw)/2:y=(1080-ih)/2:color=blackso the whole command becomes :ffmpeg -y -loglevel verbose -i /var/www/temp/film.mp4 -vf 'scale=1920:1080:force_original_aspect_ratio=decrease,pad=1920:1080:x=(1920-iw)/2:y=(1080-ih)/2:color=black' /var/www/temp/videoHD.mp4Running this command gives the required result.
ffmpeg version 3.3.4-2~16.04.york0 Copyright (c) 2000-2017 the FFmpeg developers
built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.4) 20160609
configuration: --prefix=/usr --extra-version='2~16.04.york0' --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-stripping --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmp3lame --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 --enable-shared
libavutil 55. 58.100 / 55. 58.100
libavcodec 57. 89.100 / 57. 89.100
libavformat 57. 71.100 / 57. 71.100
libavdevice 57. 6.100 / 57. 6.100
libavfilter 6. 82.100 / 6. 82.100
libavresample 3. 5. 0 / 3. 5. 0
libswscale 4. 6.100 / 4. 6.100
libswresample 2. 7.100 / 2. 7.100
libpostproc 54. 5.100 / 54. 5.100
[h264 @ 0x7f3a55c17560] Reinit context to 640x368, pix_fmt: yuv420p
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/var/www/temp/film.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf57.71.100
Duration: 00:06:19.80, start: 0.000000, bitrate: 451 kb/s
Stream #0:0(und): Video: h264 (High), 1 reference frame (avc1 / 0x31637661), yuv420p(left), 640x358 (640x368), 313 kb/s, 30 fps, 30 tbr, 15360 tbn, 60 tbc (default)
Metadata:
handler_name : VideoHandler
Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 128 kb/s (default)
Metadata:
handler_name : SoundHandler
Stream mapping:
Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
Stream #0:1 -> #0:1 (aac (native) -> aac (native))
Press [q] to stop, [?] for help
[h264 @ 0x7f3a55c59700] Reinit context to 640x368, pix_fmt: yuv420p
[graph_1_in_0_1 @ 0x7f3a55dce5e0] tb:1/48000 samplefmt:fltp samplerate:48000 chlayout:0x3
[Parsed_scale_0 @ 0x7f3a55deb000] w:1920 h:1080 flags:'bicubic' interl:0
[graph 0 input from stream 0:0 @ 0x7f3a55dec6a0] w:640 h:358 pixfmt:yuv420p tb:1/15360 fr:30/1 sar:0/1 sws_param:flags=2
[Parsed_scale_0 @ 0x7f3a55deb000] w:640 h:358 fmt:yuv420p sar:0/1 -> w:1920 h:1074 fmt:yuv420p sar:0/1 flags:0x4
[Parsed_pad_1 @ 0x7f3a55debac0] w:1920 h:1074 -> w:1920 h:1080 x:0 y:2 color:0x000000FF
[libx264 @ 0x7f3a55ded9e0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2
[libx264 @ 0x7f3a55ded9e0] profile High, level 4.0
[libx264 @ 0x7f3a55ded9e0] 264 - core 148 r2795 aaa9aa8 - H.264/MPEG-4 AVC codec - Copyleft 2003-2017 - 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 '/var/www/temp/videoHD.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf57.71.100
Stream #0:0(und): Video: h264 (libx264), 1 reference frame ([33][0][0][0] / 0x0021), yuv420p(left), 1920x1080, q=-1--1, 30 fps, 15360 tbn, 30 tbc (default)
Metadata:
handler_name : VideoHandler
encoder : Lavc57.89.100 libx264
Side data:
cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
Stream #0:1(und): Audio: aac (LC) ([64][0][0][0] / 0x0040), 48000 Hz, stereo, fltp, delay 1024, 128 kb/s (default)
Metadata:
handler_name : SoundHandler
encoder : Lavc57.89.100 aac
frame= 46 fps=0.0 q=0.0 size= 0kB time=00:00:01.62 bitrate= 0.0kbits/s
frame= 59 fps= 47 q=29.0 size= 116kB time=00:00:02.04 bitrate= 464.8kbits/
frame= 74 fps= 41 q=29.0 size= 223kB time=00:00:02.56 bitrate= 714.8kbits/
frame= 87 fps= 35 q=29.0 size= 344kB time=00:00:02.98 bitrate= 942.4kbits/
frame= 98 fps= 33 q=29.0 size= 427kB time=00:00:03.34 bitrate=1043.4kbits/
blah
blah
blah
frame=11347 fps= 21 q=29.0 size= 97550kB time=00:06:18.32 bitrate=2112.3kbits/
frame=11363 fps= 21 q=29.0 size= 97713kB time=00:06:18.85 bitrate=2112.8kbits/
frame=11380 fps= 21 q=29.0 size= 97795kB time=00:06:19.41 bitrate=2111.5kbits/
No more output streams to write to, finishing.
frame=11392 fps= 21 q=-1.0 Lsize= 98519kB time=00:06:19.77 bitrate=2125.1kbits/s speed=0.69x
video:92124kB audio:5986kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.416313%
Input file #0 (/var/www/temp/film.mp4):
Input stream #0:0 (video): 11392 packets read (14892948 bytes); 11392 frames decoded;
Input stream #0:1 (audio): 17803 packets read (6112540 bytes); 17802 frames decoded (18229248 samples);
Total: 29195 packets (21005488 bytes) demuxed
Output file #0 (/var/www/temp/videoHD.mp4):
Output stream #0:0 (video): 11392 frames encoded; 11392 packets muxed (94334785 bytes);
Output stream #0:1 (audio): 17802 frames encoded (18229248 samples); 17803 packets muxed (6129981 bytes);
Total: 29195 packets (100464766 bytes) muxed
[libx264 @ 0x7f3a55ded9e0] frame I:74 Avg QP:19.08 size: 51540
[libx264 @ 0x7f3a55ded9e0] frame P:3506 Avg QP:21.34 size: 19348
[libx264 @ 0x7f3a55ded9e0] frame B:7812 Avg QP:24.07 size: 2904
[libx264 @ 0x7f3a55ded9e0] consecutive B-frames: 1.3% 20.2% 4.6% 73.9%
[libx264 @ 0x7f3a55ded9e0] mb I I16..4: 19.7% 73.6% 6.7%
[libx264 @ 0x7f3a55ded9e0] mb P I16..4: 3.2% 6.4% 0.1% P16..4: 52.5% 7.6% 2.6% 0.0% 0.0% skip:27.6%
[libx264 @ 0x7f3a55ded9e0] mb B I16..4: 0.2% 0.2% 0.0% B16..8: 23.2% 0.4% 0.0% direct: 0.5% skip:75.5% L0:51.8% L1:46.6% BI: 1.6%
[libx264 @ 0x7f3a55ded9e0] 8x8 transform intra:66.4% inter:94.0%
[libx264 @ 0x7f3a55ded9e0] coded y,uvDC,uvAC intra: 33.6% 53.4% 7.3% inter: 5.3% 14.2% 0.0%
[libx264 @ 0x7f3a55ded9e0] i16 v,h,dc,p: 22% 27% 5% 46%
[libx264 @ 0x7f3a55ded9e0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 29% 19% 20% 4% 7% 7% 7% 5% 4%
[libx264 @ 0x7f3a55ded9e0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 31% 28% 11% 3% 9% 7% 6% 3% 2%
[libx264 @ 0x7f3a55ded9e0] i8c dc,h,v,p: 49% 21% 20% 10%
[libx264 @ 0x7f3a55ded9e0] Weighted P-Frames: Y:0.5% UV:0.1%
[libx264 @ 0x7f3a55ded9e0] ref P L0: 63.4% 8.9% 21.4% 6.3% 0.0%
[libx264 @ 0x7f3a55ded9e0] ref B L0: 89.3% 9.1% 1.6%
[libx264 @ 0x7f3a55ded9e0] ref B L1: 98.1% 1.9%
[libx264 @ 0x7f3a55ded9e0] kb/s:1987.38
[aac @ 0x7f3a55deee80] Qavg: 1160.814and the resulting video is fine.
Any ideas ?
Cheers,
Stu
Edit
It was suggested that I use a new function to do much the same thing. So I added the following function and used it for the command that I’m having trouble with :
def ffmpegPro(args):
err = None
for i, arg in enumerate(args):
if(" " in arg or "(" in arg or "[" in arg):
args[i] = "\"" + arg + "\""
command = [
ffmpegcmd, '-y',
'-loglevel', loglevel
] + args
commandStr = " ".join(command)
print("\n\n\n")
print(command)
print("\n\n\n")
print(commandStr)
ffmpeg = subprocess.Popen(commandStr, stderr=subprocess.PIPE, stdout=subprocess.PIPE, universal_newlines=True, shell=True)
while err == None:
out, err = ffmpeg.communicate()
time.sleep(1)
if ffmpeg.returncode == 0 and all([os.path.exists(f) for f in (videoStorage['data_small'], videoStorage['data_big'])]):
print("Job done.")
else:
print("ERROR")
print(err)The resulting command can now be used in
pythonor at the command line without needing to be changed at all. The command is :ffmpeg -y -loglevel verbose -i /var/www/temp/film.mp4 -vf "scale=1920:1080:force_original_aspect_ratio=decrease,pad=1920:1080:x=(1920-iw)/2:y=(1080-ih)/2:color=black" /var/www/temp/videoHD.mp4The result when executed in
pythonisffmpeg version 3.3.4-2~16.04.york0 Copyright (c) 2000-2017 the FFmpeg developers
built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.4) 20160609
configuration: --prefix=/usr --extra-version='2~16.04.york0' --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-stripping --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmp3lame --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 --enable-shared
libavutil 55. 58.100 / 55. 58.100
libavcodec 57. 89.100 / 57. 89.100
libavformat 57. 71.100 / 57. 71.100
libavdevice 57. 6.100 / 57. 6.100
libavfilter 6. 82.100 / 6. 82.100
libavresample 3. 5. 0 / 3. 5. 0
libswscale 4. 6.100 / 4. 6.100
libswresample 2. 7.100 / 2. 7.100
libpostproc 54. 5.100 / 54. 5.100
[h264 @ 0x7fb75053d560] Reinit context to 640x368, pix_fmt: yuv420p
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/var/www/temp/film.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf57.71.100
Duration: 00:06:19.80, start: 0.000000, bitrate: 451 kb/s
Stream #0:0(und): Video: h264 (High), 1 reference frame (avc1 / 0x31637661), yuv420p(left), 640x358 (640x368), 313 kb/s, 30 fps, 30 tbr, 15360 tbn, 60 tbc (default)
Metadata:
handler_name : VideoHandler
Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 128 kb/s (default)
Metadata:
handler_name : SoundHandler
Stream mapping:
Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
Stream #0:1 -> #0:1 (aac (native) -> aac (native))
Press [q] to stop, [?] for help
[h264 @ 0x7fb75057f700] Reinit context to 640x368, pix_fmt: yuv420p
[graph_1_in_0_1 @ 0x7fb7506f45e0] tb:1/48000 samplefmt:fltp samplerate:48000 chlayout:0x3
[Parsed_scale_0 @ 0x7fb750711000] w:1920 h:1080 flags:'bicubic' interl:0
[graph 0 input from stream 0:0 @ 0x7fb7507126a0] w:640 h:358 pixfmt:yuv420p tb:1/15360 fr:30/1 sar:0/1 sws_param:flags=2
[Parsed_scale_0 @ 0x7fb750711000] w:640 h:358 fmt:yuv420p sar:0/1 -> w:1920 h:1074 fmt:yuv420p sar:0/1 flags:0x4
[Parsed_pad_1 @ 0x7fb750711ac0] w:1920 h:1074 -> w:1920 h:1080 x:0 y:2 color:0x000000FF
[libx264 @ 0x7fb7507139e0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2
[libx264 @ 0x7fb7507139e0] profile High, level 4.0
[libx264 @ 0x7fb7507139e0] 264 - core 148 r2795 aaa9aa8 - H.264/MPEG-4 AVC codec - Copyleft 2003-2017 - 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 '/var/www/temp/videoHD.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf57.71.100
Stream #0:0(und): Video: h264 (libx264), 1 reference frame ([33][0][0][0] / 0x0021), yuv420p(left), 1920x1080, q=-1--1, 30 fps, 15360 tbn, 30 tbc (default)
Metadata:
handler_name : VideoHandler
encoder : Lavc57.89.100 libx264
Side data:
cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
Stream #0:1(und): Audio: aac (LC) ([64][0][0][0] / 0x0040), 48000 Hz, stereo, fltp, delay 1024, 128 kb/s (default)
Metadata:
handler_name : SoundHandler
encoder : Lavc57.89.100 aac
KilledNote the
Killedat the end. Is this significant and why is it only happening when executed in the script ?Here is the output from the command line which results in a successful video file.
ffmpeg version 3.3.4-2~16.04.york0 Copyright (c) 2000-2017 the FFmpeg developers
built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.4) 20160609
configuration: --prefix=/usr --extra-version='2~16.04.york0' --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-stripping --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmp3lame --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 --enable-shared
libavutil 55. 58.100 / 55. 58.100
libavcodec 57. 89.100 / 57. 89.100
libavformat 57. 71.100 / 57. 71.100
libavdevice 57. 6.100 / 57. 6.100
libavfilter 6. 82.100 / 6. 82.100
libavresample 3. 5. 0 / 3. 5. 0
libswscale 4. 6.100 / 4. 6.100
libswresample 2. 7.100 / 2. 7.100
libpostproc 54. 5.100 / 54. 5.100
[h264 @ 0x7fb52cfb3560] Reinit context to 640x368, pix_fmt: yuv420p
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/var/www/temp/film.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf57.71.100
Duration: 00:06:19.80, start: 0.000000, bitrate: 451 kb/s
Stream #0:0(und): Video: h264 (High), 1 reference frame (avc1 / 0x31637661), yuv420p(left), 640x358 (640x368), 313 kb/s, 30 fps, 30 tbr, 15360 tbn, 60 tbc (default)
Metadata:
handler_name : VideoHandler
Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 128 kb/s (default)
Metadata:
handler_name : SoundHandler
Stream mapping:
Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
Stream #0:1 -> #0:1 (aac (native) -> aac (native))
Press [q] to stop, [?] for help
[h264 @ 0x7fb52cff5700] Reinit context to 640x368, pix_fmt: yuv420p
[graph_1_in_0_1 @ 0x7fb52d16a5e0] tb:1/48000 samplefmt:fltp samplerate:48000 chlayout:0x3
[Parsed_scale_0 @ 0x7fb52d187000] w:1920 h:1080 flags:'bicubic' interl:0
[graph 0 input from stream 0:0 @ 0x7fb52d1886a0] w:640 h:358 pixfmt:yuv420p tb:1/15360 fr:30/1 sar:0/1 sws_param:flags=2
[Parsed_scale_0 @ 0x7fb52d187000] w:640 h:358 fmt:yuv420p sar:0/1 -> w:1920 h:1074 fmt:yuv420p sar:0/1 flags:0x4
[Parsed_pad_1 @ 0x7fb52d187ac0] w:1920 h:1074 -> w:1920 h:1080 x:0 y:2 color:0x000000FF
[libx264 @ 0x7fb52d1899e0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2
[libx264 @ 0x7fb52d1899e0] profile High, level 4.0
[libx264 @ 0x7fb52d1899e0] 264 - core 148 r2795 aaa9aa8 - H.264/MPEG-4 AVC codec - Copyleft 2003-2017 - 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 '/var/www/temp/videoHD.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf57.71.100
Stream #0:0(und): Video: h264 (libx264), 1 reference frame ([33][0][0][0] / 0x0021), yuv420p(left), 1920x1080, q=-1--1, 30 fps, 15360 tbn, 30 tbc (default)
Metadata:
handler_name : VideoHandler
encoder : Lavc57.89.100 libx264
Side data:
cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
Stream #0:1(und): Audio: aac (LC) ([64][0][0][0] / 0x0040), 48000 Hz, stereo, fltp, delay 1024, 128 kb/s (default)
Metadata:
handler_name : SoundHandler
encoder : Lavc57.89.100 aac
frame= 47 fps=0.0 q=0.0 size= 0kB time=00:00:01.66 bitrate= 0.0kbits/s
frame= 59 fps= 41 q=29.0 size= 116kB time=00:00:02.04 bitrate= 464.8kbits/
frame= 71 fps= 35 q=29.0 size= 201kB time=00:00:02.45 bitrate= 671.3kbits/
frame= 80 fps= 31 q=29.0 size= 276kB time=00:00:02.75 bitrate= 822.0kbits/
Blah
Blah
Blah
frame=11337 fps= 21 q=29.0 size= 97503kB time=00:06:17.98 bitrate=2113.2kbits/
frame=11351 fps= 21 q=26.0 size= 97572kB time=00:06:18.45 bitrate=2112.1kbits/
frame=11371 fps= 21 q=29.0 size= 97745kB time=00:06:19.11 bitrate=2112.1kbits/
frame=11390 fps= 21 q=29.0 size= 97852kB time=00:06:19.73 bitrate=2111.0kbits/
No more output streams to write to, finishing.
frame=11392 fps= 21 q=-1.0 Lsize= 98519kB time=00:06:19.77 bitrate=2125.1kbits/s speed=0.688x
video:92124kB audio:5986kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.416313%
Input file #0 (/var/www/temp/film.mp4):
Input stream #0:0 (video): 11392 packets read (14892948 bytes); 11392 frames decoded;
Input stream #0:1 (audio): 17803 packets read (6112540 bytes); 17802 frames decoded (18229248 samples);
Total: 29195 packets (21005488 bytes) demuxed
Output file #0 (/var/www/temp/videoHD.mp4):
Output stream #0:0 (video): 11392 frames encoded; 11392 packets muxed (94334785 bytes);
Output stream #0:1 (audio): 17802 frames encoded (18229248 samples); 17803 packets muxed (6129981 bytes);
Total: 29195 packets (100464766 bytes) muxed
[libx264 @ 0x7fb52d1899e0] frame I:74 Avg QP:19.08 size: 51540
[libx264 @ 0x7fb52d1899e0] frame P:3506 Avg QP:21.34 size: 19348
[libx264 @ 0x7fb52d1899e0] frame B:7812 Avg QP:24.07 size: 2904
[libx264 @ 0x7fb52d1899e0] consecutive B-frames: 1.3% 20.2% 4.6% 73.9%
[libx264 @ 0x7fb52d1899e0] mb I I16..4: 19.7% 73.6% 6.7%
[libx264 @ 0x7fb52d1899e0] mb P I16..4: 3.2% 6.4% 0.1% P16..4: 52.5% 7.6% 2.6% 0.0% 0.0% skip:27.6%
[libx264 @ 0x7fb52d1899e0] mb B I16..4: 0.2% 0.2% 0.0% B16..8: 23.2% 0.4% 0.0% direct: 0.5% skip:75.5% L0:51.8% L1:46.6% BI: 1.6%
[libx264 @ 0x7fb52d1899e0] 8x8 transform intra:66.4% inter:94.0%
[libx264 @ 0x7fb52d1899e0] coded y,uvDC,uvAC intra: 33.6% 53.4% 7.3% inter: 5.3% 14.2% 0.0%
[libx264 @ 0x7fb52d1899e0] i16 v,h,dc,p: 22% 27% 5% 46%
[libx264 @ 0x7fb52d1899e0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 29% 19% 20% 4% 7% 7% 7% 5% 4%
[libx264 @ 0x7fb52d1899e0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 31% 28% 11% 3% 9% 7% 6% 3% 2%
[libx264 @ 0x7fb52d1899e0] i8c dc,h,v,p: 49% 21% 20% 10%
[libx264 @ 0x7fb52d1899e0] Weighted P-Frames: Y:0.5% UV:0.1%
[libx264 @ 0x7fb52d1899e0] ref P L0: 63.4% 8.9% 21.4% 6.3% 0.0%
[libx264 @ 0x7fb52d1899e0] ref B L0: 89.3% 9.1% 1.6%
[libx264 @ 0x7fb52d1899e0] ref B L1: 98.1% 1.9%
[libx264 @ 0x7fb52d1899e0] kb/s:1987.38
[aac @ 0x7fb52d18ae80] Qavg: 1160.814Any more ideas why this is being handled differently in
pythonas opposed to the command line ?I’m believe this is a version issue and that is why the below answer did not work for me, things were fine before I upgraded but since then a lot of things have been playing up. I upgraded both
ffmpegandpythonversions and don’t really want to go back if it can be avoided.Thanks,
Stu
-
FFMPEG + HW Acceleration + Kepler GPU Lossless encoding not supported ?
11 juillet 2022, par user2522885I'm curious about FFMPEG and GPU hardware acceleration. My Windows 10 system uses the Asus / nVidia GTX 760 graphics card and Intel i5-2500K CPU. My graphics card claims to be of the Kepler architecture with CUDA 3.0 as shown here.


Instead of going through the hassles of compiling FFMPEG with hw acceleration support i downloaded a pre-compiled binary from here and here.


Next, i tried running a test with hw acceleration options as recommended here :


ffmpeg -y -vsync 0 -hwaccel cuda -hwaccel_output_format cuda -i "input.mkv" -c:a copy -c:v h264_nvenc "output.mp4"


I then received the error message :


[h264_nvenc @ 000001c34eeda8c0] Lossless encoding not supported
[h264_nvenc @ 000001c34eeda8c0] Provided device doesn't support required NVENC features
Error initializing output stream 0:0 — Error while opening encoder for output stream #0:0 - maybe incorrect parameters such as bit_rate, rate, width or height


What am i doing wrong ? For the record i install the CUDA setup file but it made no difference. I am using the latest nVidia drivers.


UPDATE


ffmpeg -h encoder=h264_nvenc


ffmpeg version 4.4-full_build-www.gyan.dev Copyright (c) 2000-2021 the FFmpeg developers
 built with gcc 10.2.0 (Rev6, Built by MSYS2 project)
 configuration: --enable-gpl --enable-version3 --enable-static --disable-w32threads --disable-autodetect --enable-fontconfig --enable-iconv --enable-gnutls --enable-libxml2 --enable-gmp --enable-lzma --enable-libsnappy --enable-zlib --enable-librist --enable-libsrt --enable-libssh --enable-libzmq --enable-avisynth --enable-libbluray --enable-libcaca --enable-sdl2 --enable-libdav1d --enable-libzvbi --enable-librav1e --enable-libsvtav1 --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxvid --enable-libaom --enable-libopenjpeg --enable-libvpx --enable-libass --enable-frei0r --enable-libfreetype --enable-libfribidi --enable-libvidstab --enable-libvmaf --enable-libzimg --enable-amf --enable-cuda-llvm --enable-cuvid --enable-ffnvcodec --enable-nvdec --enable-nvenc --enable-d3d11va --enable-dxva2 --enable-libmfx --enable-libglslang --enable-vulkan --enable-opencl --enable-libcdio --enable-libgme --enable-libmodplug --enable-libopenmpt --enable-libopencore-amrwb --enable-libmp3lame --enable-libshine --enable-libtheora --enable-libtwolame --enable-libvo-amrwbenc --enable-libilbc --enable-libgsm --enable-libopencore-amrnb --enable-libopus --enable-libspeex --enable-libvorbis --enable-ladspa --enable-libbs2b --enable-libflite --enable-libmysofa --enable-librubberband --enable-libsoxr --enable-chromaprint
 libavutil 56. 70.100 / 56. 70.100
 libavcodec 58.134.100 / 58.134.100
 libavformat 58. 76.100 / 58. 76.100
 libavdevice 58. 13.100 / 58. 13.100
 libavfilter 7.110.100 / 7.110.100
 libswscale 5. 9.100 / 5. 9.100
 libswresample 3. 9.100 / 3. 9.100
 libpostproc 55. 9.100 / 55. 9.100
Encoder h264_nvenc [NVIDIA NVENC H.264 encoder]:
 General capabilities: dr1 delay hardware
 Threading capabilities: none
 Supported hardware devices: cuda cuda d3d11va d3d11va
 Supported pixel formats: yuv420p nv12 p010le yuv444p p016le yuv444p16le bgr0 rgb0 cuda d3d11
h264_nvenc AVOptions:
 -preset <int> E..V....... Set the encoding preset (from 0 to 18) (default p4)
 default 0 E..V.......
 slow 1 E..V....... hq 2 passes
 medium 2 E..V....... hq 1 pass
 fast 3 E..V....... hp 1 pass
 hp 4 E..V.......
 hq 5 E..V.......
 bd 6 E..V.......
 ll 7 E..V....... low latency
 llhq 8 E..V....... low latency hq
 llhp 9 E..V....... low latency hp
 lossless 10 E..V.......
 losslesshp 11 E..V.......
 p1 12 E..V....... fastest (lowest quality)
 p2 13 E..V....... faster (lower quality)
 p3 14 E..V....... fast (low quality)
 p4 15 E..V....... medium (default)
 p5 16 E..V....... slow (good quality)
 p6 17 E..V....... slower (better quality)
 p7 18 E..V....... slowest (best quality)
 -tune <int> E..V....... Set the encoding tuning info (from 1 to 4) (default hq)
 hq 1 E..V....... High quality
 ll 2 E..V....... Low latency
 ull 3 E..V....... Ultra low latency
 lossless 4 E..V....... Lossless
 -profile <int> E..V....... Set the encoding profile (from 0 to 3) (default main)
 baseline 0 E..V.......
 main 1 E..V.......
 high 2 E..V.......
 high444p 3 E..V.......
 -level <int> E..V....... Set the encoding level restriction (from 0 to 62) (default auto)
 auto 0 E..V.......
 1 10 E..V.......
 1.0 10 E..V.......
 1b 9 E..V.......
 1.0b 9 E..V.......
 1.1 11 E..V.......
 1.2 12 E..V.......
 1.3 13 E..V.......
 2 20 E..V.......
 2.0 20 E..V.......
 2.1 21 E..V.......
 2.2 22 E..V.......
 3 30 E..V.......
 3.0 30 E..V.......
 3.1 31 E..V.......
 3.2 32 E..V.......
 4 40 E..V.......
 4.0 40 E..V.......
 4.1 41 E..V.......
 4.2 42 E..V.......
 5 50 E..V.......
 5.0 50 E..V.......
 5.1 51 E..V.......
 5.2 52 E..V.......
 6.0 60 E..V.......
 6.1 61 E..V.......
 6.2 62 E..V.......
 -rc <int> E..V....... Override the preset rate-control (from -1 to INT_MAX) (default -1)
 constqp 0 E..V....... Constant QP mode
 vbr 1 E..V....... Variable bitrate mode
 cbr 2 E..V....... Constant bitrate mode
 vbr_minqp 8388612 E..V....... Variable bitrate mode with MinQP (deprecated)
 ll_2pass_quality 8388616 E..V....... Multi-pass optimized for image quality (deprecated)
 ll_2pass_size 8388624 E..V....... Multi-pass optimized for constant frame size (deprecated)
 vbr_2pass 8388640 E..V....... Multi-pass variable bitrate mode (deprecated)
 cbr_ld_hq 8388616 E..V....... Constant bitrate low delay high quality mode
 cbr_hq 8388624 E..V....... Constant bitrate high quality mode
 vbr_hq 8388640 E..V....... Variable bitrate high quality mode
 -rc-lookahead <int> E..V....... Number of frames to look ahead for rate-control (from 0 to INT_MAX) (default 0)
 -surfaces <int> E..V....... Number of concurrent surfaces (from 0 to 64) (default 0)
 -cbr <boolean> E..V....... Use cbr encoding mode (default false)
 -2pass <boolean> E..V....... Use 2pass encoding mode (default auto)
 -gpu <int> E..V....... Selects which NVENC capable GPU to use. First GPU is 0, second is 1, and so on. (from -2 to INT_MAX) (default any)
 any -1 E..V....... Pick the first device available
 list -2 E..V....... List the available devices
 -delay <int> E..V....... Delay frame output by the given amount of frames (from 0 to INT_MAX) (default INT_MAX)
 -no-scenecut <boolean> E..V....... When lookahead is enabled, set this to 1 to disable adaptive I-frame insertion at scene cuts (default false)
 -forced-idr <boolean> E..V....... If forcing keyframes, force them as IDR frames. (default false)
 -b_adapt <boolean> E..V....... When lookahead is enabled, set this to 0 to disable adaptive B-frame decision (default true)
 -spatial-aq <boolean> E..V....... set to 1 to enable Spatial AQ (default false)
 -spatial_aq <boolean> E..V....... set to 1 to enable Spatial AQ (default false)
 -temporal-aq <boolean> E..V....... set to 1 to enable Temporal AQ (default false)
 -temporal_aq <boolean> E..V....... set to 1 to enable Temporal AQ (default false)
 -zerolatency <boolean> E..V....... Set 1 to indicate zero latency operation (no reordering delay) (default false)
 -nonref_p <boolean> E..V....... Set this to 1 to enable automatic insertion of non-reference P-frames (default false)
 -strict_gop <boolean> E..V....... Set 1 to minimize GOP-to-GOP rate fluctuations (default false)
 -aq-strength <int> E..V....... When Spatial AQ is enabled, this field is used to specify AQ strength. AQ strength scale is from 1 (low) - 15 (aggressive) (from 1 to 15) (default 8)
 -cq <float> E..V....... Set target quality level (0 to 51, 0 means automatic) for constant quality mode in VBR rate control (from 0 to 51) (default 0)
 -aud <boolean> E..V....... Use access unit delimiters (default false)
 -bluray-compat <boolean> E..V....... Bluray compatibility workarounds (default false)
 -init_qpP <int> E..V....... Initial QP value for P frame (from -1 to 51) (default -1)
 -init_qpB <int> E..V....... Initial QP value for B frame (from -1 to 51) (default -1)
 -init_qpI <int> E..V....... Initial QP value for I frame (from -1 to 51) (default -1)
 -qp <int> E..V....... Constant quantization parameter rate control method (from -1 to 51) (default -1)
 -weighted_pred <int> E..V....... Set 1 to enable weighted prediction (from 0 to 1) (default 0)
 -coder <int> E..V....... Coder type (from -1 to 2) (default default)
 default -1 E..V.......
 auto 0 E..V.......
 cabac 1 E..V.......
 cavlc 2 E..V.......
 ac 1 E..V.......
 vlc 2 E..V.......
 -b_ref_mode <int> E..V....... Use B frames as references (from 0 to 2) (default disabled)
 disabled 0 E..V....... B frames will not be used for reference
 each 1 E..V....... Each B frame will be used for reference
 middle 2 E..V....... Only (number of B frames)/2 will be used for reference
 -a53cc <boolean> E..V....... Use A53 Closed Captions (if available) (default true)
 -dpb_size <int> E..V....... Specifies the DPB size used for encoding (0 means automatic) (from 0 to INT_MAX) (default 0)
 -multipass <int> E..V....... Set the multipass encoding (from 0 to 2) (default disabled)
 disabled 0 E..V....... Single Pass
 qres 1 E..V....... Two Pass encoding is enabled where first Pass is quarter resolution
 fullres 2 E..V....... Two Pass encoding is enabled where first Pass is full resolution
 -ldkfs <int> E..V....... Low delay key frame scale; Specifies the Scene Change frame size increase allowed in case of single frame VBV and CBR (from 0 to 255) (default 0)
</int></int></int></boolean></int></int></int></int></int></int></int></boolean></boolean></float></int></boolean></boolean></boolean></boolean></boolean></boolean></boolean></boolean></boolean></boolean></int></int></boolean></boolean></int></int></int></int></int></int></int>

-
AWS Lambda : ffmpeg thumbnails Generator : empty JPG
3 septembre 2020, par MagikeyWhen a video is uploaded on S3 i want to store a JPG screenshot.



On a lambda function with amazon AWS, i do :



...

 let tmpFile = createWriteStream(`/tmp/screenshot.jpg`)

 var ffmpeg = spawn(ffmpegPath, [
 "-ss","00:00:05",
 "-i", target,
 "-vf", "thumbnail,scale=200:200", 
 "-qscale:v" ,"2",
 "-frames:v", "1",
 "-f", "image2",
 "-c:v", "mjpeg",
 "pipe:1"
 ]);

 ffmpeg.stdout.pipe(tmpFile).on("error", err => {
 console.log("Error A: ",err);
 });

 ffmpeg.on('error', err => {
 console.log("Error B", err)
 reject()
 })

 ffmpeg.on('close', code => {
 tmpFile.end();
 console.log('Log A', ffmpeg);

 child_process.exec("echo `ls -l -R /tmp`",
 (error, stdout, stderr) => {
 console.log(stdout)
 });

 resolve()
 })
...



But the result is an empty JPG file in S3.



Logs shows no errors, my "target" is OK, stdout ls show me the empty JPG file.



I have try a lot of things, like use other version of ffmpeg but same.



There is the "console.log('Log A', ffmpeg)" :



ChildProcess {
 _events: [Object: null prototype] { error: [Function], close: [Function] },
 _eventsCount: 2,
 _maxListeners: undefined,
 _closesNeeded: 3,
 _closesGot: 3,
 connected: false,
 signalCode: 'SIGSEGV',
 exitCode: null,
 killed: false,
 spawnfile: '/opt/nodejs/ffmpeg',
 _handle: null,
 spawnargs: [
 '/opt/nodejs/ffmpeg',
 '-ss',
 '00:00:05',
 '-i',
 'https://xxxxxxxxx',
 '-vf',
 'thumbnail,scale=200:200',
 '-qscale:v',
 '2',
 '-frames:v',
 '1',
 '-f',
 'image2',
 '-v',
 '16',
 '-c:v',
 'mjpeg',
 'pipe:1'
 ],
 pid: 24,
 stdin: Socket {
 connecting: false,
 _hadError: false,
 _parent: null,
 _host: null,
 _readableState: ReadableState {
 objectMode: false,
 highWaterMark: 16384,
 buffer: BufferList { head: null, tail: null, length: 0 },
 length: 0,
 pipes: null,
 pipesCount: 0,
 flowing: null,
 ended: false,
 endEmitted: false,
 reading: false,
 sync: true,
 needReadable: false,
 emittedReadable: false,
 readableListening: false,
 resumeScheduled: false,
 paused: true,
 emitClose: false,
 autoDestroy: false,
 destroyed: true,
 defaultEncoding: 'utf8',
 awaitDrain: 0,
 readingMore: false,
 decoder: null,
 encoding: null
 },
 readable: false,
 _events: [Object: null prototype] { end: [Function: onReadableStreamEnd] },
 _eventsCount: 1,
 _maxListeners: undefined,
 _writableState: WritableState {
 objectMode: false,
 highWaterMark: 16384,
 finalCalled: false,
 needDrain: false,
 ending: false,
 ended: false,
 finished: false,
 destroyed: true,
 decodeStrings: false,
 defaultEncoding: 'utf8',
 length: 0,
 writing: false,
 corked: 0,
 sync: true,
 bufferProcessing: false,
 onwrite: [Function: bound onwrite],
 writecb: null,
 writelen: 0,
 bufferedRequest: null,
 lastBufferedRequest: null,
 pendingcb: 0,
 prefinished: false,
 errorEmitted: false,
 emitClose: false,
 autoDestroy: false,
 bufferedRequestCount: 0,
 corkedRequestsFree: [Object]
 },
 writable: false,
 allowHalfOpen: false,
 _sockname: null,
 _pendingData: null,
 _pendingEncoding: '',
 server: null,
 _server: null,
 [Symbol(asyncId)]: 5,
 [Symbol(kHandle)]: null,
 [Symbol(lastWriteQueueSize)]: 0,
 [Symbol(timeout)]: null,
 [Symbol(kBuffer)]: null,
 [Symbol(kBufferCb)]: null,
 [Symbol(kBufferGen)]: null,
 [Symbol(kBytesRead)]: 0,
 [Symbol(kBytesWritten)]: 0
 },
 stdout: Socket {
 connecting: false,
 _hadError: false,
 _parent: null,
 _host: null,
 _readableState: ReadableState {
 objectMode: false,
 highWaterMark: 16384,
 buffer: BufferList { head: null, tail: null, length: 0 },
 length: 0,
 pipes: null,
 pipesCount: 0,
 flowing: false,
 ended: true,
 endEmitted: true,
 reading: false,
 sync: false,
 needReadable: false,
 emittedReadable: false,
 readableListening: false,
 resumeScheduled: false,
 paused: false,
 emitClose: false,
 autoDestroy: false,
 destroyed: true,
 defaultEncoding: 'utf8',
 awaitDrain: 0,
 readingMore: false,
 decoder: null,
 encoding: null
 },
 readable: false,
 _events: [Object: null prototype] {
 end: [Function: onReadableStreamEnd],
 close: [Function]
 },
 _eventsCount: 2,
 _maxListeners: undefined,
 _writableState: WritableState {
 objectMode: false,
 highWaterMark: 16384,
 finalCalled: false,
 needDrain: false,
 ending: false,
 ended: false,
 finished: false,
 destroyed: true,
 decodeStrings: false,
 defaultEncoding: 'utf8',
 length: 0,
 writing: false,
 corked: 0,
 sync: true,
 bufferProcessing: false,
 onwrite: [Function: bound onwrite],
 writecb: null,
 writelen: 0,
 bufferedRequest: null,
 lastBufferedRequest: null,
 pendingcb: 0,
 prefinished: false,
 errorEmitted: false,
 emitClose: false,
 autoDestroy: false,
 bufferedRequestCount: 0,
 corkedRequestsFree: [Object]
 },
 writable: false,
 allowHalfOpen: false,
 _sockname: null,
 _pendingData: null,
 _pendingEncoding: '',
 server: null,
 _server: null,
 write: [Function: writeAfterFIN],
 [Symbol(asyncId)]: 6,
 [Symbol(kHandle)]: null,
 [Symbol(lastWriteQueueSize)]: 0,
 [Symbol(timeout)]: null,
 [Symbol(kBuffer)]: null,
 [Symbol(kBufferCb)]: null,
 [Symbol(kBufferGen)]: null,
 [Symbol(kBytesRead)]: 0,
 [Symbol(kBytesWritten)]: 0
 },
 stderr: Socket {
 connecting: false,
 _hadError: false,
 _parent: null,
 _host: null,
 _readableState: ReadableState {
 objectMode: false,
 highWaterMark: 16384,
 buffer: BufferList { head: null, tail: null, length: 0 },
 length: 0,
 pipes: null,
 pipesCount: 0,
 flowing: null,
 ended: true,
 endEmitted: true,
 reading: false,
 sync: false,
 needReadable: false,
 emittedReadable: false,
 readableListening: false,
 resumeScheduled: false,
 paused: true,
 emitClose: false,
 autoDestroy: false,
 destroyed: true,
 defaultEncoding: 'utf8',
 awaitDrain: 0,
 readingMore: false,
 decoder: null,
 encoding: null
 },
 readable: false,
 _events: [Object: null prototype] {
 end: [Function: onReadableStreamEnd],
 close: [Function]
 },
 _eventsCount: 2,
 _maxListeners: undefined,
 _writableState: WritableState {
 objectMode: false,
 highWaterMark: 16384,
 finalCalled: false,
 needDrain: false,
 ending: false,
 ended: false,
 finished: false,
 destroyed: true,
 decodeStrings: false,
 defaultEncoding: 'utf8',
 length: 0,
 writing: false,
 corked: 0,
 sync: true,
 bufferProcessing: false,
 onwrite: [Function: bound onwrite],
 writecb: null,
 writelen: 0,
 bufferedRequest: null,
 lastBufferedRequest: null,
 pendingcb: 0,
 prefinished: false,
 errorEmitted: false,
 emitClose: false,
 autoDestroy: false,
 bufferedRequestCount: 0,
 corkedRequestsFree: [Object]
 },
 writable: false,
 allowHalfOpen: false,
 _sockname: null,
 _pendingData: null,
 _pendingEncoding: '',
 server: null,
 _server: null,
 write: [Function: writeAfterFIN],
 [Symbol(asyncId)]: 7,
 [Symbol(kHandle)]: null,
 [Symbol(lastWriteQueueSize)]: 0,
 [Symbol(timeout)]: null,
 [Symbol(kBuffer)]: null,
 [Symbol(kBufferCb)]: null,
 [Symbol(kBufferGen)]: null,
 [Symbol(kBytesRead)]: 0,
 [Symbol(kBytesWritten)]: 0
 },
 stdio: [
 Socket {
 connecting: false,
 _hadError: false,
 _parent: null,
 _host: null,
 _readableState: [ReadableState],
 readable: false,
 _events: [Object: null prototype],
 _eventsCount: 1,
 _maxListeners: undefined,
 _writableState: [WritableState],
 writable: false,
 allowHalfOpen: false,
 _sockname: null,
 _pendingData: null,
 _pendingEncoding: '',
 server: null,
 _server: null,
 [Symbol(asyncId)]: 5,
 [Symbol(kHandle)]: null,
 [Symbol(lastWriteQueueSize)]: 0,
 [Symbol(timeout)]: null,
 [Symbol(kBuffer)]: null,
 [Symbol(kBufferCb)]: null,
 [Symbol(kBufferGen)]: null,
 [Symbol(kBytesRead)]: 0,
 [Symbol(kBytesWritten)]: 0
 },
 Socket {
 connecting: false,
 _hadError: false,
 _parent: null,
 _host: null,
 _readableState: [ReadableState],
 readable: false,
 _events: [Object: null prototype],
 _eventsCount: 2,
 _maxListeners: undefined,
 _writableState: [WritableState],
 writable: false,
 allowHalfOpen: false,
 _sockname: null,
 _pendingData: null,
 _pendingEncoding: '',
 server: null,
 _server: null,
 write: [Function: writeAfterFIN],
 [Symbol(asyncId)]: 6,
 [Symbol(kHandle)]: null,
 [Symbol(lastWriteQueueSize)]: 0,
 [Symbol(timeout)]: null,
 [Symbol(kBuffer)]: null,
 [Symbol(kBufferCb)]: null,
 [Symbol(kBufferGen)]: null,
 [Symbol(kBytesRead)]: 0,
 [Symbol(kBytesWritten)]: 0
 },
 Socket {
 connecting: false,
 _hadError: false,
 _parent: null,
 _host: null,
 _readableState: [ReadableState],
 readable: false,
 _events: [Object: null prototype],
 _eventsCount: 2,
 _maxListeners: undefined,
 _writableState: [WritableState],
 writable: false,
 allowHalfOpen: false,
 _sockname: null,
 _pendingData: null,
 _pendingEncoding: '',
 server: null,
 _server: null,
 write: [Function: writeAfterFIN],
 [Symbol(asyncId)]: 7,
 [Symbol(kHandle)]: null,
 [Symbol(lastWriteQueueSize)]: 0,
 [Symbol(timeout)]: null,
 [Symbol(kBuffer)]: null,
 [Symbol(kBufferCb)]: null,
 [Symbol(kBufferGen)]: null,
 [Symbol(kBytesRead)]: 0,
 [Symbol(kBytesWritten)]: 0
 }
 ]
} ```


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