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Autres articles (41)
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XMP PHP
13 mai 2011, parDixit Wikipedia, XMP signifie :
Extensible Metadata Platform ou XMP est un format de métadonnées basé sur XML utilisé dans les applications PDF, de photographie et de graphisme. Il a été lancé par Adobe Systems en avril 2001 en étant intégré à la version 5.0 d’Adobe Acrobat.
Étant basé sur XML, il gère un ensemble de tags dynamiques pour l’utilisation dans le cadre du Web sémantique.
XMP permet d’enregistrer sous forme d’un document XML des informations relatives à un fichier : titre, auteur, historique (...) -
Websites made with MediaSPIP
2 mai 2011, parThis page lists some websites based on MediaSPIP.
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ANNEXE : Les extensions, plugins SPIP des canaux
11 février 2010, parUn plugin est un ajout fonctionnel au noyau principal de SPIP. MediaSPIP consiste en un choix délibéré de plugins existant ou pas auparavant dans la communauté SPIP, qui ont pour certains nécessité soit leur création de A à Z, soit des ajouts de fonctionnalités.
Les extensions que MediaSPIP nécessite pour fonctionner
Depuis la version 2.1.0, SPIP permet d’ajouter des plugins dans le répertoire extensions/.
Les "extensions" ne sont ni plus ni moins que des plugins dont la particularité est qu’ils se (...)
Sur d’autres sites (4981)
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FFMPEG converting MP4 - No video
31 mars 2017, par mrcatmannI’m trying to re-encode a MP4 video with the latest version of FFMPEG (the original video is playable in all Windows players like WMP or MPC) :
ffmpeg -re -i /home/clip.mp4 -y -preset ultrafast -crf 35 -c:a aac -threads 2 /home/conv1.mp4But the output file is only audio and no video. In the console I can see many strings like
frame= 0 fps=0.0 q=0.0 Lsize=So it doesn’t see the video stream. Here is the ffprobe output :
ffprobe version git-2017-01-22-f1214ad Copyright (c) 2007-2017 the FFmpeg developers built with gcc 4.8 (Ubuntu 4.8.4-2ubuntu1~14.04.3)
configuration: --extra-libs=-ldl --prefix=/opt/ffmpeg --mandir=/usr/share/man --enable-avresample --disable-debug --enable-nonfree --enable-gpl --enable-version3 --enable-libopencore-amrnb --enable-libopencore-amrwb --disable-decoder=amrnb --disable-decoder=amrwb --enable-libpulse --enable-libfreetype --enable-gnutls --enable-libx264 --enable-libx265 --enable-libfdk-aac --enable-libvorbis --enable-libmp3lame --enable-libopus --enable-libvpx --enable-libspeex --enable-libass --enable-avisynth --enable-libsoxr --enable-libxvid --enable-libvidstab --enable-libwavpack --enable-nvenc
libavutil 55. 44.100 / 55. 44.100
libavcodec 57. 75.100 / 57. 75.100
libavformat 57. 63.100 / 57. 63.100
libavdevice 57. 2.100 / 57. 2.100
libavfilter 6. 69.100 / 6. 69.100
libavresample 3. 2. 0 / 3. 2. 0
libswscale 4. 3.101 / 4. 3.101
libswresample 2. 4.100 / 2. 4.100
libpostproc 54. 2.100 / 54. 2.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/home/clip.mp4':
Metadata:
major_brand : dash
minor_version : 0
compatible_brands: iso6avc1mp41
creation_time : 2016-03-17T09:39:29.000000Z
Duration: 00:04:18.46, start: 0.000000, bitrate: 3109 kb/s
Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1440x1080 [SAR 1:1 DAR 4:3], 2981 kb/s, 25 fps, 25 tbr, 90k tbn, 50 tbc (default)
Metadata:
creation_time : 2016-03-17T09:39:29.000000Z
handler_name : VideoHandler
Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 125 kb/s (default)
Metadata:
creation_time : 2016-03-17T09:36:59.000000Z
handler_name : SoundHandlerIs there any way to fix it ? Tried converting the video to different formats, or using Handbrake - still same results, no video.
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FFmpeg image to video conversion error : [image2] Opening file for reading
14 février 2018, par user1690179I am running ffmpeg on an AWS Lambda instance. The Lambda function takes an input image and transcodes it into a video segment using ffmpeg :
ffmpeg -loop 1 -i /tmp/photo-SNRUR7ZS13.jpg -c:v libx264 -t 7.00 -pix_fmt yuv420p -vf scale=1280x720 /tmp/output.mp4I am seeing inconsistent behavior where sometimes the output video is shorter than the specified duration. This happens inconsistently to random images. The same exact image sometimes renders correctly, and sometimes is cut short.
This behavior only happens on Lambda. I am not able to replicate this on my local computer, or on a dedicated EC2 instance with the same environment that runs on lambda.
I noticed that when the output video is short, the ffmpeg log is different. The main difference are repeated
[image2 @ 0x4b11140] Opening '/tmp/photo-2HD2Z3UN3W.jpg' for readinglines. See ffmpeg logs below.Normal execution with the correct output video length :
ffmpeg -loop 1 -i /tmp/photo-SNRUR7ZS13.jpg -c:v libx264 -t 7.00 -pix_fmt yuv420p -vf scale=1280x720 /tmp/video-TMB6RNO0EE.mp4
ffmpeg version N-89773-g7fcbebbeaf-static https://johnvansickle.com/ffmpeg/ Copyright (c) 2000-2018 the FFmpeg developers
built with gcc 6.4.0 (Debian 6.4.0-11) 20171206
configuration: --enable-gpl --enable-version3 --enable-static --disable-debug --disable-ffplay --disable-indev=sndio --disable-outdev=sndio --cc=gcc-6 --enable-fontconfig --enable-frei0r --enable-gnutls --enable-gray --enable-libfribidi --enable-libass --enable-libvmaf --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librubberband --enable-librtmp --enable-libsoxr --enable-libspeex --enable-libvorbis --enable-libopus --enable-libtheora --enable-libvidstab --enable-libvo-amrwbenc --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxvid --enable-libzimg
libavutil 56. 7.100 / 56. 7.100
libavcodec 58. 9.100 / 58. 9.100
libavformat 58. 3.100 / 58. 3.100
libavdevice 58. 0.100 / 58. 0.100
libavfilter 7. 11.101 / 7. 11.101
libswscale 5. 0.101 / 5. 0.101
libswresample 3. 0.101 / 3. 0.101
libpostproc 55. 0.100 / 55. 0.100
Input #0, image2, from '/tmp/photo-SNRUR7ZS13.jpg':
Duration: 00:00:00.04, start: 0.000000, bitrate: 18703 kb/s
Stream #0:0: Video: mjpeg, yuvj444p(pc, bt470bg/unknown/unknown), 687x860 [SAR 200:200 DAR 687:860], 25 fps, 25 tbr, 25 tbn, 25 tbc
Stream mapping:
Stream #0:0 -> #0:0 (mjpeg (native) -> h264 (libx264))
Press [q] to stop, [?] for help
[swscaler @ 0x5837900] deprecated pixel format used, make sure you did set range correctly
[libx264 @ 0x51c2340] using SAR=1477/3287
[libx264 @ 0x51c2340] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
[libx264 @ 0x51c2340] profile High, level 3.1
[libx264 @ 0x51c2340] 264 - core 155 r61 b00bcaf - 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=3 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 '/tmp/video-TMB6RNO0EE.mp4':
Metadata:
encoder : Lavf58.3.100
Stream #0:0: Video: h264 (libx264) (avc1 / 0x31637661), yuv420p, 1280x720 [SAR 6183:13760 DAR 687:860], q=-1--1, 25 fps, 12800 tbn, 25 tbc
Metadata:
encoder : Lavc58.9.100 libx264
Side data:
cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
frame= 49 fps=0.0 q=28.0 size= 0kB time=-00:00:00.03 bitrate=N/A speed=N/A
frame= 69 fps= 66 q=28.0 size= 0kB time=00:00:00.76 bitrate= 0.5kbits/s speed=0.728x
frame= 89 fps= 57 q=28.0 size= 0kB time=00:00:01.56 bitrate= 0.2kbits/s speed=0.998x
frame= 109 fps= 53 q=28.0 size= 0kB time=00:00:02.36 bitrate= 0.2kbits/s speed=1.14x
frame= 129 fps= 50 q=28.0 size= 0kB time=00:00:03.16 bitrate= 0.1kbits/s speed=1.22x
frame= 148 fps= 48 q=28.0 size= 0kB time=00:00:03.92 bitrate= 0.1kbits/s speed=1.27x
frame= 168 fps= 47 q=28.0 size= 0kB time=00:00:04.72 bitrate= 0.1kbits/s speed=1.31x
No more output streams to write to, finishing.
frame= 175 fps= 39 q=-1.0 Lsize= 94kB time=00:00:06.88 bitrate= 112.2kbits/s speed=1.54x
video:91kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 3.161261%
Input file #0 (/tmp/photo-SNRUR7ZS13.jpg):
Input stream #0:0 (video): 176 packets read (16459168 bytes); 176 frames decoded;
Total: 176 packets (16459168 bytes) demuxed
Output file #0 (/tmp/video-TMB6RNO0EE.mp4):
Output stream #0:0 (video): 175 frames encoded; 175 packets muxed (93507 bytes);
Total: 175 packets (93507 bytes) muxed
[libx264 @ 0x51c2340] frame I:1 Avg QP:14.33 size: 73084
[libx264 @ 0x51c2340] frame P:44 Avg QP:14.09 size: 302
[libx264 @ 0x51c2340] frame B:130 Avg QP:23.31 size: 50
[libx264 @ 0x51c2340] consecutive B-frames: 0.6% 1.1% 0.0% 98.3%
[libx264 @ 0x51c2340] mb I I16..4: 3.3% 84.5% 12.1%
[libx264 @ 0x51c2340] mb P I16..4: 0.0% 0.0% 0.0% P16..4: 3.2% 0.1% 0.0% 0.0% 0.0% skip:96.7%
[libx264 @ 0x51c2340] mb B I16..4: 0.0% 0.0% 0.0% B16..8: 0.4% 0.0% 0.0% direct: 0.0% skip:99.6% L0:31.2% L1:68.8% BI: 0.0%
[libx264 @ 0x51c2340] 8x8 transform intra:84.5% inter:98.8%
[libx264 @ 0x51c2340] coded y,uvDC,uvAC intra: 95.1% 63.9% 51.6% inter: 0.1% 0.6% 0.0%
[libx264 @ 0x51c2340] i16 v,h,dc,p: 26% 21% 4% 49%
[libx264 @ 0x51c2340] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 20% 27% 21% 3% 5% 6% 6% 4% 9%
[libx264 @ 0x51c2340] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 23% 36% 10% 4% 7% 5% 6% 2% 6%
[libx264 @ 0x51c2340] i8c dc,h,v,p: 51% 29% 16% 4%
[libx264 @ 0x51c2340] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 0x51c2340] ref P L0: 96.5% 0.0% 3.3% 0.2%
[libx264 @ 0x51c2340] ref B L0: 42.4% 57.6%
[libx264 @ 0x51c2340] ref B L1: 97.0% 3.0%
[libx264 @ 0x51c2340] kb/s:106.08Log from a short video :
ffmpeg -framerate 25 -y -loop 1 -i /tmp/photo-2HD2Z3UN3W.jpg -t 15.00 -filter_complex "[0:v]crop=h=ih:w='if(gt(a,16/9),ih*16/9,iw)':y=0:x='if(gt(a,16/9),(ow-iw)/2,0)'[tmp];[tmp]scale=-1:4000,crop=w=iw:h='min(iw*9/16,ih)':x=0:y='0.17*ih-((t/15.00)*min(0.17*ih,(ih-oh)/6))',trim=duration=15.00[tmp1];[tmp1]zoompan=z='if(lte(pzoom,1.0),1.15,max(1.0,pzoom-0.0005))':x='iw/2-(iw/zoom/2)':y='ih/2-(ih/zoom/2)':d=1,setsar=sar=1:1[animated];[animated]fade=out:st=12.00:d=3.00:c=#000000[animated]" -map "[animated]" -pix_fmt yuv420p -s 1280x720 -y /tmp/video-QB1JCDT021.mp4
ffmpeg version N-89773-g7fcbebbeaf-static https://johnvansickle.com/ffmpeg/ Copyright (c) 2000-2018 the FFmpeg developers
built with gcc 6.4.0 (Debian 6.4.0-11) 20171206
configuration: --enable-gpl --enable-version3 --enable-static --disable-debug --disable-ffplay --disable-indev=sndio --disable-outdev=sndio --cc=gcc-6 --enable-fontconfig --enable-frei0r --enable-gnutls --enable-gray --enable-libfribidi --enable-libass --enable-libvmaf --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librubberband --enable-librtmp --enable-libsoxr --enable-libspeex --enable-libvorbis --enable-libopus --enable-libtheora --enable-libvidstab --enable-libvo-amrwbenc --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxvid --enable-libzimg
libavutil 56. 7.100 / 56. 7.100
libavcodec 58. 9.100 / 58. 9.100
libavformat 58. 3.100 / 58. 3.100
libavdevice 58. 0.100 / 58. 0.100
libavfilter 7. 11.101 / 7. 11.101
libswscale 5. 0.101 / 5. 0.101
libswresample 3. 0.101 / 3. 0.101
libpostproc 55. 0.100 / 55. 0.100
Input #0, image2, from '/tmp/photo-2HD2Z3UN3W.jpg':
Duration: 00:00:00.04, start: 0.000000, bitrate: 373617 kb/s
Stream #0:0: Video: mjpeg, yuvj444p(pc, bt470bg/unknown/unknown), 1936x2592 [SAR 72:72 DAR 121:162], 25 fps, 25 tbr, 25 tbn, 25 tbc
Stream mapping:
Stream #0:0 (mjpeg) -> crop
fade -> Stream #0:0 (libx264)
Press [q] to stop, [?] for help
[swscaler @ 0x4d63b40] deprecated pixel format used, make sure you did set range correctly
[swscaler @ 0x4df7340] deprecated pixel format used, make sure you did set range correctly
[swscaler @ 0x50e97c0] deprecated pixel format used, make sure you did set range correctly
[swscaler @ 0x50e97c0] Warning: data is not aligned! This can lead to a speed loss
[libx264 @ 0x4b17480] using SAR=1/1
[libx264 @ 0x4b17480] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
[libx264 @ 0x4b17480] profile High, level 3.1
[libx264 @ 0x4b17480] 264 - core 155 r61 b00bcaf - 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=3 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 '/tmp/video-QB1JCDT021.mp4':
Metadata:
encoder : Lavf58.3.100
Stream #0:0: Video: h264 (libx264) (avc1 / 0x31637661), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], q=-1--1, 25 fps, 12800 tbn, 25 tbc
Metadata:
encoder : Lavc58.9.100 libx264
Side data:
cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
[swscaler @ 0x5bd0380] deprecated pixel format used, make sure you did set range correctly
debug=1
cur_dts is invalid (this is harmless if it occurs once at the start per stream)
[image2 @ 0x4b11140] Opening '/tmp/photo-2HD2Z3UN3W.jpg' for reading
[AVIOContext @ 0x4b6ecc0] Statistics: 1868086 bytes read, 0 seeks
[mjpeg @ 0x4b14940] marker=d8 avail_size_in_buf=1868084
[mjpeg @ 0x4b14940] marker parser used 0 bytes (0 bits)
[mjpeg @ 0x4b14940] marker=e0 avail_size_in_buf=1868082
[mjpeg @ 0x4b14940] marker parser used 16 bytes (128 bits)
[mjpeg @ 0x4b14940] marker=db avail_size_in_buf=1868064
[mjpeg @ 0x4b14940] index=0
[mjpeg @ 0x4b14940] qscale[0]: 0
[mjpeg @ 0x4b14940] marker parser used 67 bytes (536 bits)
[mjpeg @ 0x4b14940] marker=db avail_size_in_buf=1867995
[mjpeg @ 0x4b14940] index=1
[mjpeg @ 0x4b14940] qscale[1]: 1
[mjpeg @ 0x4b14940] marker parser used 67 bytes (536 bits)
[mjpeg @ 0x4b14940] marker=c0 avail_size_in_buf=1867926
[mjpeg @ 0x4b14940] sof0: picture: 1936x2592
[mjpeg @ 0x4b14940] component 0 1:1 id: 0 quant:0
[mjpeg @ 0x4b14940] component 1 1:1 id: 1 quant:1
[mjpeg @ 0x4b14940] component 2 1:1 id: 2 quant:1
[mjpeg @ 0x4b14940] pix fmt id 11111100
[mjpeg @ 0x4b14940] marker parser used 17 bytes (136 bits)
[mjpeg @ 0x4b14940] marker=c4 avail_size_in_buf=1867907
[mjpeg @ 0x4b14940] class=0 index=0 nb_codes=11
[mjpeg @ 0x4b14940] marker parser used 30 bytes (240 bits)
[mjpeg @ 0x4b14940] marker=c4 avail_size_in_buf=1867875
[mjpeg @ 0x4b14940] class=1 index=0 nb_codes=242
[mjpeg @ 0x4b14940] marker parser used 82 bytes (656 bits)
[mjpeg @ 0x4b14940] marker=c4 avail_size_in_buf=1867791
[mjpeg @ 0x4b14940] class=0 index=1 nb_codes=8
[mjpeg @ 0x4b14940] marker parser used 27 bytes (216 bits)
[mjpeg @ 0x4b14940] marker=c4 avail_size_in_buf=1867762
[mjpeg @ 0x4b14940] class=1 index=1 nb_codes=241
[mjpeg @ 0x4b14940] marker parser used 51 bytes (408 bits)
[mjpeg @ 0x4b14940] escaping removed 7149 bytes
[mjpeg @ 0x4b14940] marker=da avail_size_in_buf=1867709
[mjpeg @ 0x4b14940] component: 0
[mjpeg @ 0x4b14940] component: 1
[mjpeg @ 0x4b14940] component: 2
[mjpeg @ 0x4b14940] marker parser used 1860559 bytes (14884468 bits)
[mjpeg @ 0x4b14940] marker=d9 avail_size_in_buf=0
[mjpeg @ 0x4b14940] decode frame unused 0 bytes
[swscaler @ 0x5bd42c0] deprecated pixel format used, make sure you did set range correctly
cur_dts is invalid (this is harmless if it occurs once at the start per stream)
[image2 @ 0x4b11140] Opening '/tmp/photo-2HD2Z3UN3W.jpg' for reading
[AVIOContext @ 0x4b6ecc0] Statistics: 1868086 bytes read, 0 seeks
[mjpeg @ 0x4b14940] marker=d8 avail_size_in_buf=1868084
[mjpeg @ 0x4b14940] marker parser used 0 bytes (0 bits)
[mjpeg @ 0x4b14940] marker=e0 avail_size_in_buf=1868082
[mjpeg @ 0x4b14940] marker parser used 16 bytes (128 bits)
[mjpeg @ 0x4b14940] marker=db avail_size_in_buf=1868064
[mjpeg @ 0x4b14940] index=0
[mjpeg @ 0x4b14940] qscale[0]: 0
[mjpeg @ 0x4b14940] marker parser used 67 bytes (536 bits)
[mjpeg @ 0x4b14940] marker=db avail_size_in_buf=1867995
[mjpeg @ 0x4b14940] index=1
[mjpeg @ 0x4b14940] qscale[1]: 1
[mjpeg @ 0x4b14940] marker parser used 67 bytes (536 bits)
[mjpeg @ 0x4b14940] marker=c0 avail_size_in_buf=1867926
[mjpeg @ 0x4b14940] sof0: picture: 1936x2592
[mjpeg @ 0x4b14940] component 0 1:1 id: 0 quant:0
[mjpeg @ 0x4b14940] component 1 1:1 id: 1 quant:1
[mjpeg @ 0x4b14940] component 2 1:1 id: 2 quant:1
[mjpeg @ 0x4b14940] pix fmt id 11111100
[mjpeg @ 0x4b14940] marker parser used 17 bytes (136 bits)
[mjpeg @ 0x4b14940] marker=c4 avail_size_in_buf=1867907
[mjpeg @ 0x4b14940] class=0 index=0 nb_codes=11
[mjpeg @ 0x4b14940] marker parser used 30 bytes (240 bits)
[mjpeg @ 0x4b14940] marker=c4 avail_size_in_buf=1867875
[mjpeg @ 0x4b14940] class=1 index=0 nb_codes=242
[mjpeg @ 0x4b14940] marker parser used 82 bytes (656 bits)
[mjpeg @ 0x4b14940] marker=c4 avail_size_in_buf=1867791
[mjpeg @ 0x4b14940] class=0 index=1 nb_codes=8
[mjpeg @ 0x4b14940] marker parser used 27 bytes (216 bits)
[mjpeg @ 0x4b14940] marker=c4 avail_size_in_buf=1867762
[mjpeg @ 0x4b14940] class=1 index=1 nb_codes=241
[mjpeg @ 0x4b14940] marker parser used 51 bytes (408 bits)
[mjpeg @ 0x4b14940] escaping removed 7149 bytes
[mjpeg @ 0x4b14940] marker=da avail_size_in_buf=1867709
[mjpeg @ 0x4b14940] component: 0
[mjpeg @ 0x4b14940] component: 1
[mjpeg @ 0x4b14940] component: 2
[mjpeg @ 0x4b14940] marker parser used 1860559 bytes (14884468 bits)
[mjpeg @ 0x4b14940] marker=d9 avail_size_in_buf=0
[mjpeg @ 0x4b14940] decode frame unused 0 bytes
[swscaler @ 0x5bd8200] deprecated pixel format used, make sure you did set range correctly
cur_dts is invalid (this is harmless if it occurs once at the start per stream)
...
...
...As requested, here is a link to the full log. In this log - ffmpeg renders only 323 out of 375 frames.
The
Opening '/tmp/photo-2HD2Z3UN3W.jpg'segment repeats many many times until it finally renders out a short video. Does anyone have insight into why it keeps opening the image file ? This must have something to do with the underlying issue. -
How to keep transparency when scale webm file with ffmpeg
5 octobre 2022, par Sonia KidmanI'm using ffmpeg to scale my WEBM file, by using below command : 
ffmpeg -i in.webm -c:v libvpx -vf scale=100:100 out.webm
The output has correct resolution as I expected but the problem is transparency become black background.



Could someone give me a solution for this.



Thank you so much.



Below is the log of the operation :



ffmpeg version 3.4 Copyright (c) 2000-2017 the FFmpeg developers
 built with gcc 7.2.0 (GCC)
 configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-bzlib --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-cuda --enable-cuvid --enable-d3d11va --enable-nvenc --enable-dxva2 --enable-avisynth --enable-libmfx
 libavutil 55. 78.100 / 55. 78.100
 libavcodec 57.107.100 / 57.107.100
 libavformat 57. 83.100 / 57. 83.100
 libavdevice 57. 10.100 / 57. 10.100
 libavfilter 6.107.100 / 6.107.100
 libswscale 4. 8.100 / 4. 8.100
 libswresample 2. 9.100 / 2. 9.100
 libpostproc 54. 7.100 / 54. 7.100
Splitting the commandline.
Reading option '-v' ... matched as option 'v' (set logging level) with argument '56'.
Reading option '-i' ... matched as input url with argument 'in.webm'.
Reading option '-c:v' ... matched as option 'c' (codec name) with argument 'libvpx'.
Reading option '-vf' ... matched as option 'vf' (set video filters) with argument 'scale=320:240'.
Reading option 'out.webm' ... matched as output url.
Finished splitting the commandline.
Parsing a group of options: global .
Applying option v (set logging level) with argument 56.
Successfully parsed a group of options.
Parsing a group of options: input url in.webm.
Successfully parsed a group of options.
Opening an input file: in.webm.
[NULL @ 000002387e6322a0] Opening 'in.webm' for reading
[file @ 000002387e632ea0] Setting default whitelist 'file,crypto'
Probing matroska,webm score:100 size:2048
Probing mp3 score:1 size:2048
[matroska,webm @ 000002387e6322a0] Format matroska,webm probed with size=2048 and score=100
st:0 removing common factor 1000000 from timebase
[matroska,webm @ 000002387e6322a0] Before avformat_find_stream_info() pos: 634 bytes read:32768 seeks:0 nb_streams:1
[matroska,webm @ 000002387e6322a0] All info found
[matroska,webm @ 000002387e6322a0] stream 0: start_time: 0.000 duration: -9223372036854776.000
[matroska,webm @ 000002387e6322a0] format: start_time: 0.000 duration: 0.400 bitrate=1432 kb/s
[matroska,webm @ 000002387e6322a0] After avformat_find_stream_info() pos: 34843 bytes read:65536 seeks:0 frames:1
Input #0, matroska,webm, from 'in.webm':
 Metadata:
 ENCODER : Lavf57.83.100
 Duration: 00:00:00.40, start: 0.000000, bitrate: 1432 kb/s
 Stream #0:0, 1, 1/1000: Video: vp8, 1 reference frame, yuv420p(progressive), 640x480, 0/1, SAR 1:1 DAR 4:3, 10 fps, 10 tbr, 1k tbn, 1k tbc (default)
 Metadata:
 alpha_mode : 1
 ENCODER : Lavc57.107.100 libvpx
 DURATION : 00:00:00.400000000
Successfully opened the file.
Parsing a group of options: output url out.webm.
Applying option c:v (codec name) with argument libvpx.
Applying option vf (set video filters) with argument scale=320:240.
Successfully parsed a group of options.
Opening an output file: out.webm.
[file @ 000002387e658b40] Setting default whitelist 'file,crypto'
Successfully opened the file.
detected 4 logical cores
Stream mapping:
 Stream #0:0 -> #0:0 (vp8 (native) -> vp8 (libvpx))
Press [q] to stop, [?] for help
cur_dts is invalid (this is harmless if it occurs once at the start per stream)
 Last message repeated 4 times
[Parsed_scale_0 @ 000002387e718a60] Setting 'w' to value '320'
[Parsed_scale_0 @ 000002387e718a60] Setting 'h' to value '240'
[Parsed_scale_0 @ 000002387e718a60] Setting 'flags' to value 'bicubic'
[Parsed_scale_0 @ 000002387e718a60] w:320 h:240 flags:'bicubic' interl:0
[graph 0 input from stream 0:0 @ 000002387e743b00] Setting 'video_size' to value '640x480'
[graph 0 input from stream 0:0 @ 000002387e743b00] Setting 'pix_fmt' to value '0'
[graph 0 input from stream 0:0 @ 000002387e743b00] Setting 'time_base' to value '1/1000'
[graph 0 input from stream 0:0 @ 000002387e743b00] Setting 'pixel_aspect' to value '1/1'
[graph 0 input from stream 0:0 @ 000002387e743b00] Setting 'sws_param' to value 'flags=2'
[graph 0 input from stream 0:0 @ 000002387e743b00] Setting 'frame_rate' to value '10/1'
[graph 0 input from stream 0:0 @ 000002387e743b00] w:640 h:480 pixfmt:yuv420p tb:1/1000 fr:10/1 sar:1/1 sws_param:flags=2
[format @ 000002387e7fe1e0] compat: called with args=[yuv420p|yuva420p]
[format @ 000002387e7fe1e0] Setting 'pix_fmts' to value 'yuv420p|yuva420p'
[AVFilterGraph @ 000002387e634e60] query_formats: 4 queried, 3 merged, 0 already done, 0 delayed
[Parsed_scale_0 @ 000002387e718a60] w:640 h:480 fmt:yuv420p sar:1/1 -> w:320 h:240 fmt:yuv420p sar:1/1 flags:0x4
[libvpx @ 000002387e657fe0] v1.6.1
[libvpx @ 000002387e657fe0] --prefix=/Users/kyle/software/libvpx/win64/libvpx-1.6.1-win64 --target=x86_64-win64-gcc
[libvpx @ 000002387e657fe0] vpx_codec_enc_cfg
[libvpx @ 000002387e657fe0] generic settings
 g_usage: 0
 g_threads: 0
 g_profile: 0
 g_w: 320
 g_h: 240
 g_bit_depth: 8
 g_input_bit_depth: 8
 g_timebase: {1/30}
 g_error_resilient: 0
 g_pass: 0
 g_lag_in_frames: 0
[libvpx @ 000002387e657fe0] rate control settings
 rc_dropframe_thresh: 0
 rc_resize_allowed: 0
 rc_resize_up_thresh: 60
 rc_resize_down_thresh: 30
 rc_end_usage: 0
 rc_twopass_stats_in: 0000000000000000(0)
 rc_target_bitrate: 256
[libvpx @ 000002387e657fe0] quantizer settings
 rc_min_quantizer: 4
 rc_max_quantizer: 63
[libvpx @ 000002387e657fe0] bitrate tolerance
 rc_undershoot_pct: 100
 rc_overshoot_pct: 100
[libvpx @ 000002387e657fe0] decoder buffer model
 rc_buf_sz: 6000
 rc_buf_initial_sz: 4000
 rc_buf_optimal_sz: 5000
[libvpx @ 000002387e657fe0] 2 pass rate control settings
 rc_2pass_vbr_bias_pct: 50
 rc_2pass_vbr_minsection_pct: 0
 rc_2pass_vbr_maxsection_pct: 400
[libvpx @ 000002387e657fe0] keyframing settings
 kf_mode: 1
 kf_min_dist: 0
 kf_max_dist: 128
[libvpx @ 000002387e657fe0] 
[libvpx @ 000002387e657fe0] vpx_codec_enc_cfg
[libvpx @ 000002387e657fe0] generic settings
 g_usage: 0
 g_threads: 0
 g_profile: 0
 g_w: 320
 g_h: 240
 g_bit_depth: 8
 g_input_bit_depth: 8
 g_timebase: {1/10}
 g_error_resilient: 0
 g_pass: 0
 g_lag_in_frames: 25
[libvpx @ 000002387e657fe0] rate control settings
 rc_dropframe_thresh: 0
 rc_resize_allowed: 0
 rc_resize_up_thresh: 60
 rc_resize_down_thresh: 30
 rc_end_usage: 0
 rc_twopass_stats_in: 0000000000000000(0)
 rc_target_bitrate: 200
[libvpx @ 000002387e657fe0] quantizer settings
 rc_min_quantizer: 4
 rc_max_quantizer: 63
[libvpx @ 000002387e657fe0] bitrate tolerance
 rc_undershoot_pct: 100
 rc_overshoot_pct: 100
[libvpx @ 000002387e657fe0] decoder buffer model
 rc_buf_sz: 6000
 rc_buf_initial_sz: 4000
 rc_buf_optimal_sz: 5000
[libvpx @ 000002387e657fe0] 2 pass rate control settings
 rc_2pass_vbr_bias_pct: 50
 rc_2pass_vbr_minsection_pct: 0
 rc_2pass_vbr_maxsection_pct: 400
[libvpx @ 000002387e657fe0] keyframing settings
 kf_mode: 1
 kf_min_dist: 0
 kf_max_dist: 128
[libvpx @ 000002387e657fe0] 
[libvpx @ 000002387e657fe0] vpx_codec_control
[libvpx @ 000002387e657fe0] VP8E_SET_CPUUSED: 1
[libvpx @ 000002387e657fe0] VP8E_SET_ARNR_MAXFRAMES: 0
[libvpx @ 000002387e657fe0] VP8E_SET_ARNR_STRENGTH: 3
[libvpx @ 000002387e657fe0] VP8E_SET_ARNR_TYPE: 3
[libvpx @ 000002387e657fe0] VP8E_SET_NOISE_SENSITIVITY: 0
[libvpx @ 000002387e657fe0] VP8E_SET_TOKEN_PARTITIONS: 0
[libvpx @ 000002387e657fe0] VP8E_SET_STATIC_THRESHOLD: 0
[libvpx @ 000002387e657fe0] Using deadline: 1000000
Output #0, webm, to 'out.webm':
 Metadata:
 encoder : Lavf57.83.100
 Stream #0:0, 0, 1/1000: Video: vp8 (libvpx), 1 reference frame, yuv420p, 320x240 [SAR 1:1 DAR 4:3], 0/1, q=-1--1, 200 kb/s, 10 fps, 1k tbn, 10 tbc (default)
 Metadata:
 alpha_mode : 1
 DURATION : 00:00:00.400000000
 encoder : Lavc57.107.100 libvpx
 Side data:
 cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
Clipping frame in rate conversion by 0.000008
[webm @ 000002387e656880] get_metadata_duration returned: 400000
[webm @ 000002387e656880] Write early duration from metadata = 400
[webm @ 000002387e656880] Writing block at offset 3, size 11223, pts 0, dts 0, duration 100, keyframe 1
[webm @ 000002387e656880] Writing block at offset 11233, size 1288, pts 100, dts 100, duration 100, keyframe 0
[webm @ 000002387e656880] Writing block at offset 12528, size 1504, pts 200, dts 200, duration 100, keyframe 0
[webm @ 000002387e656880] Writing block at offset 14039, size 2481, pts 300, dts 300, duration 100, keyframe 0
[out_0_0 @ 000002387e743d60] EOF on sink link out_0_0:default.
No more output streams to write to, finishing.
[webm @ 000002387e656880] end duration = 400
[webm @ 000002387e656880] stream 0 end duration = 400
frame= 4 fps=0.0 q=0.0 Lsize= 17kB time=00:00:00.30 bitrate= 457.8kbits/s speed=4.45x 
video:16kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 4.413191%
Input file #0 (in.webm):
 Input stream #0:0 (video): 4 packets read (34992 bytes); 4 frames decoded; 
 Total: 4 packets (34992 bytes) demuxed
Output file #0 (out.webm):
 Output stream #0:0 (video): 4 frames encoded; 4 packets muxed (16496 bytes); 
 Total: 4 packets (16496 bytes) muxed
4 frames successfully decoded, 0 decoding errors
[AVIOContext @ 000002387e698c20] Statistics: 14 seeks, 10 writeouts
[AVIOContext @ 000002387cc773e0] Statistics: 71649 bytes read, 0 seeks


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