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MediaSPIP 0.1 Beta version
25 avril 2011, parMediaSPIP 0.1 beta is the first version of MediaSPIP proclaimed as "usable".
The zip file provided here only contains the sources of MediaSPIP in its standalone version.
To get a working installation, you must manually install all-software dependencies on the server.
If you want to use this archive for an installation in "farm mode", you will also need to proceed to other manual (...) -
Websites made with MediaSPIP
2 mai 2011, parThis page lists some websites based on MediaSPIP.
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Creating farms of unique websites
13 avril 2011, parMediaSPIP platforms can be installed as a farm, with a single "core" hosted on a dedicated server and used by multiple websites.
This allows (among other things) : implementation costs to be shared between several different projects / individuals rapid deployment of multiple unique sites creation of groups of like-minded sites, making it possible to browse media in a more controlled and selective environment than the major "open" (...)
Sur d’autres sites (16547)
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Why ffmpeg convert only the first frame of gif to mp4 [closed]
3 juin 2020, par JayvantGif has 6 frames with 2 sec delay per each.
I used following command :



ffmpeg -i input.gif -y -an anim123.mp4 -vf "pad=ceil(iw/2)*2:ceil(ih/2)*2"




output log :



ffmpeg version N-85266-g1229007 Copyright (c) 2000-2017 the FFmpeg developers
 built with gcc 6.3.0 (GCC)
 configuration: --enable-gpl --enable-version3 --enable-cuda --enable-cuvid --enable-d3d11va --enable-dxva2 --enable-libmfx --enable-nvenc --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg --enable-lzma --enable-zlib libavutil 55. 59.100 / 55. 59.100 libavcodec 57. 90.100 / 57. 90.100 libavformat 57. 72.100 / 57. 72.100 libavdevice 57. 7.100 / 57. 7.100 libavfilter 6. 83.100 / 6. 83.100
 libswscale 4. 7.100 / 4. 7.100
 libswresample 2. 8.100 / 2. 8.100
 libpostproc 54. 6.100 / 54. 6.100
Trailing options were found on the commandline.
Input #0, gif, from 'input.gif':
Duration: N/A, bitrate: N/A 
 Stream #0:0: Video: gif, bgra, 560x315, 0.50 fps, 0.50 tbr, 100 tbn, 100 tbc
Stream mapping: 
 Stream #0:0 -> #0:0 (gif (native) -> h264 (libx264))
Press [q] to stop, [?] for help 
No pixel format specified, yuv444p for H.264 encoding chosen.
Use -pix_fmt yuv420p for compatibility with outdated media players. 
[libx264 @ 0000000000681a00] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX 
[libx264 @ 0000000000681a00] profile High 4:4:4 Predictive, level 2.1, 4:4:4 8-bit 
[libx264 @ 0000000000681a00] 264 - core 148 r2762 90a61ec - 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=4 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=1 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 'anim123.mp4': 
Metadata: 
 encoder : Lavf57.72.100 
 Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv444p, 560x315, q=-1--1, 0.50 fps, 16384 tbn, 0.50 tbc 
 Metadata: 
 encoder : Lavc57.90.100 libx264 
 Side data: 
 cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1 
frame= 6 fps=0.0 q=-1.0 Lsize= 338kB time=00:00:06.00 bitrate= 461.9kbits/s speed=22.9x 
 video:337kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.251471%
[libx264 @ 0000000000681a00] frame I:1 Avg QP:14.97 size: 51472 
[libx264 @ 0000000000681a00] frame P:5 Avg QP:17.08 size: 58681
[libx264 @ 0000000000681a00] mb I I16..4: 27.9% 23.6% 48.6% 
[libx264 @ 0000000000681a00] mb P I16..4: 15.0% 17.3% 48.2% P16..4: 1.5% 0.1% 0.1% 0.0% 0.0% skip:17.8% 
[libx264 @ 0000000000681a00] 8x8 transform intra:21.9% inter:9.4% 
[libx264 @ 0000000000681a00] coded y,u,v intra: 63.8% 59.7% 55.8% inter: 2.2% 1.0% 0.6% 
[libx264 @ 0000000000681a00] i16 v,h,dc,p: 77% 10% 12% 0% 
[libx264 @ 0000000000681a00] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 20% 15% 34% 4% 4% 4% 7% 3% 10% 
[libx264 @ 0000000000681a00] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 9% 22% 17% 6% 7% 5% 13% 5% 14% 
[libx264 @ 0000000000681a00] Weighted P-Frames: Y:40.0% UV:20.0%
[libx264 @ 0000000000681a00] ref P L0: 40.8% 0.8% 44.6% 8.8% 5.0%
[libx264 @ 0000000000681a00] kb/s:229.92




Input Gif Link


Video not generating properly, It takes only 1st frame in video.

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FFmpeg AVI to MP4 preserves sound, but not images [migrated]
21 février 2013, par user1711384Working with FFmpeg at a conversion (any file to MP4 (H.264/AAC)) :
ffmpeg -y -i testdatei.avi -i logo.jpg -filter_complex overlay=15:15,scale=-1:720 -c:v libx264 -profile:v baseline -preset medium -b:v 880k -g 10 -pass 1 -an -f mp4 -movflags faststart /dev/null
ffmpeg -y -i testdatei.avi -i logo.jpg -filter_complex overlay=15:15,scale=-1:720 -c:v libx264 -profile:v baseline -preset medium -b:v 880k -g 10 -pass 2 -c:a libfdk_aac -b:a 128k -movflags faststart xxx.mp4 2>&1With MPEG and WMV file it's working. With two different AVIs it didn't work. Logfiles from path 1 aren't generated and output 1 is empty, output 2 of course generates an error.
After removing
-profile:v baseline
in both commands, the video file is successfully generated, but it's not possible to play it in JW Player (sound yes, but no image).This is the result of the first command :
ffmpeg version git-2013-02-20-39b0393 Copyright (c) 2000-2013 the FFmpeg developers
built on Feb 20 2013 12:06:36 with gcc 4.6 (Ubuntu/Linaro 4.6.3-1ubuntu5)
configuration: --enable-gpl --enable-libass --enable-libfaac --enable-libfdk-aac --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libspeex --enable-librtmp --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-nonfree --enable-version3
libavutil 52. 17.102 / 52. 17.102
libavcodec 54. 92.100 / 54. 92.100
libavformat 54. 63.100 / 54. 63.100
libavdevice 54. 3.103 / 54. 3.103
libavfilter 3. 38.103 / 3. 38.103
libswscale 2. 2.100 / 2. 2.100
libswresample 0. 17.102 / 0. 17.102
libpostproc 52. 2.100 / 52. 2.100
[avi @ 0x23e4d80] non-interleaved AVI
Guessed Channel Layout for Input Stream #0.1 : stereo
Input #0, avi, from 'testdatei.avi':
Metadata:
date : 2013-02-21T14:06:32+01:00
encoder : Adobe Premiere Pro CS6 (Windows)
Duration: 00:00:07.57, start: 0.000000, bitrate: 30330 kb/s
Stream #0:0: Video: dvvideo (dvsd / 0x64737664), yuv411p, 720x480 [SAR 8:9 DAR 4:3], 29.97 tbr, 29.97 tbn, 29.97 tbc
Stream #0:1: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 48000 Hz, stereo, s16, 1536 kb/s
Input #1, image2, from 'logo.jpg':
Duration: 00:00:00.04, start: 0.000000, bitrate: N/A
Stream #1:0: Video: mjpeg, yuvj444p, 170x82, 25 tbr, 25 tbn, 25 tbc
[libx264 @ 0x23e9640] using SAR=8/9
[libx264 @ 0x23e9640] using cpu capabilities: MMX2 SSE2Fast SSSE3 FastShuffle SSE4.2 AVX
[libx264 @ 0x23e9640] profile High 4:4:4 Predictive, level 3.1, 4:4:4 8-bit
[libx264 @ 0x23e9640] 264 - core 129 r2 bc13772 - H.264/MPEG-4 AVC codec - Copyleft 2003-2013 - 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=4 threads=12 lookahead_threads=2 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=10 keyint_min=1 scenecut=40 intra_refresh=0 rc_lookahead=10 rc=2pass mbtree=1 bitrate=880 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 cplxblur=20.0 qblur=0.5 ip_ratio=1.40 aq=1:1.00
Output #0, mp4, to 'xxx.mp4':
Metadata:
date : 2013-02-21T14:06:32+01:00
encoder : Lavf54.63.100
Stream #0:0: Video: h264 ([33][0][0][0] / 0x0021), yuv444p, 1080x720 [SAR 8:9 DAR 4:3], q=-1--1, pass 2, 880 kb/s, 11988 tbn, 29.97 tbc
Stream #0:1: Audio: aac ([64][0][0][0] / 0x0040), 48000 Hz, stereo, s16, 128 kb/s
Stream mapping:
Stream #0:0 (dvvideo) -> overlay:main (graph 0)
Stream #1:0 (mjpeg) -> overlay:overlay (graph 0)
scale (graph 0) -> Stream #0:0 (libx264)
Stream #0:1 -> #0:1 (pcm_s16le -> libfdk_aac)
Press [q] to stop, [?] for help
frame= 79 fps=0.0 q=30.0 size= 291kB time=00:00:02.58 bitrate= 922.4kbits/s
frame= 162 fps=162 q=30.0 size= 620kB time=00:00:05.33 bitrate= 952.9kbits/s
Starting second pass: moving header on top of the file"
frame= 227 fps=154 q=32766.0 Lsize= 958kB time=00:00:07.59 bitrate=1033.5kbits/s
video:829kB audio:120kB subtitle:0 global headers:0kB muxing overhead 0.986027%
[libx264 @ 0x23e9640] frame I:23 Avg QP:19.11 size: 31383
[libx264 @ 0x23e9640] frame P:68 Avg QP:23.91 size: 1240
[libx264 @ 0x23e9640] frame B:136 Avg QP:20.27 size: 310
[libx264 @ 0x23e9640] consecutive B-frames: 19.8% 0.9% 0.0% 79.3%
[libx264 @ 0x23e9640] mb I I16..4: 18.8% 68.4% 12.8%
[libx264 @ 0x23e9640] mb P I16..4: 0.3% 0.3% 0.0% P16..4: 10.7% 2.3% 0.8% 0.0% 0.0% skip:85.6%
[libx264 @ 0x23e9640] mb B I16..4: 0.0% 0.0% 0.0% B16..8: 9.1% 0.1% 0.0% direct: 0.1% skip:90.7% L0:41.2% L1:58.6% BI: 0.2%
[libx264 @ 0x23e9640] 8x8 transform intra:68.3% inter:97.5%
[libx264 @ 0x23e9640] coded y,u,v intra: 53.7% 26.9% 30.8% inter: 0.5% 0.2% 0.3%
[libx264 @ 0x23e9640] i16 v,h,dc,p: 70% 17% 1% 11%
[libx264 @ 0x23e9640] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 28% 25% 18% 4% 3% 4% 4% 6% 8%
[libx264 @ 0x23e9640] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 33% 29% 8% 4% 6% 6% 5% 5% 4%
[libx264 @ 0x23e9640] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 0x23e9640] ref P L0: 75.9% 5.1% 11.3% 7.7%
[libx264 @ 0x23e9640] ref B L0: 96.0% 3.1% 0.9%
[libx264 @ 0x23e9640] ref B L1: 95.8% 4.2%
[libx264 @ 0x23e9640] kb/s:895.99Output2 :
ffmpeg version git-2013-02-20-39b0393 Copyright (c) 2000-2013 the FFmpeg developers
built on Feb 20 2013 12:06:36 with gcc 4.6 (Ubuntu/Linaro 4.6.3-1ubuntu5)
configuration: --enable-gpl --enable-libass --enable-libfaac --enable-libfdk-aac --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libspeex --enable-librtmp --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-nonfree --enable-version3
libavutil 52. 17.102 / 52. 17.102
libavcodec 54. 92.100 / 54. 92.100
libavformat 54. 63.100 / 54. 63.100
libavdevice 54. 3.103 / 54. 3.103
libavfilter 3. 38.103 / 3. 38.103
libswscale 2. 2.100 / 2. 2.100
libswresample 0. 17.102 / 0. 17.102
libpostproc 52. 2.100 / 52. 2.100
[avi @ 0x23e4d80] non-interleaved AVI
Guessed Channel Layout for Input Stream #0.1 : stereo
Input #0, avi, from 'testdatei.avi':
Metadata:
date : 2013-02-21T14:06:32+01:00
encoder : Adobe Premiere Pro CS6 (Windows)
Duration: 00:00:07.57, start: 0.000000, bitrate: 30330 kb/s
Stream #0:0: Video: dvvideo (dvsd / 0x64737664), yuv411p, 720x480 [SAR 8:9 DAR 4:3], 29.97 tbr, 29.97 tbn, 29.97 tbc
Stream #0:1: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 48000 Hz, stereo, s16, 1536 kb/s
Input #1, image2, from 'logo.jpg':
Duration: 00:00:00.04, start: 0.000000, bitrate: N/A
Stream #1:0: Video: mjpeg, yuvj444p, 170x82, 25 tbr, 25 tbn, 25 tbc
[libx264 @ 0x23e9640] using SAR=8/9
[libx264 @ 0x23e9640] using cpu capabilities: MMX2 SSE2Fast SSSE3 FastShuffle SSE4.2 AVX
[libx264 @ 0x23e9640] profile High 4:4:4 Predictive, level 3.1, 4:4:4 8-bit
[libx264 @ 0x23e9640] 264 - core 129 r2 bc13772 - H.264/MPEG-4 AVC codec - Copyleft 2003-2013 - 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=4 threads=12 lookahead_threads=2 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=10 keyint_min=1 scenecut=40 intra_refresh=0 rc_lookahead=10 rc=2pass mbtree=1 bitrate=880 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 cplxblur=20.0 qblur=0.5 ip_ratio=1.40 aq=1:1.00
Output #0, mp4, to 'xxx.mp4':
Metadata:
date : 2013-02-21T14:06:32+01:00
encoder : Lavf54.63.100
Stream #0:0: Video: h264 ([33][0][0][0] / 0x0021), yuv444p, 1080x720 [SAR 8:9 DAR 4:3], q=-1--1, pass 2, 880 kb/s, 11988 tbn, 29.97 tbc
Stream #0:1: Audio: aac ([64][0][0][0] / 0x0040), 48000 Hz, stereo, s16, 128 kb/s
Stream mapping:
Stream #0:0 (dvvideo) -> overlay:main (graph 0)
Stream #1:0 (mjpeg) -> overlay:overlay (graph 0)
scale (graph 0) -> Stream #0:0 (libx264)
Stream #0:1 -> #0:1 (pcm_s16le -> libfdk_aac)
Press [q] to stop, [?] for help
frame= 79 fps=0.0 q=30.0 size= 291kB time=00:00:02.58 bitrate= 922.4kbits/s
frame= 162 fps=162 q=30.0 size= 620kB time=00:00:05.33 bitrate= 952.9kbits/s
Starting second pass: moving header on top of the file"
frame= 227 fps=154 q=32766.0 Lsize= 958kB time=00:00:07.59 bitrate=1033.5kbits/s
video:829kB audio:120kB subtitle:0 global headers:0kB muxing overhead 0.986027%
[libx264 @ 0x23e9640] frame I:23 Avg QP:19.11 size: 31383
[libx264 @ 0x23e9640] frame P:68 Avg QP:23.91 size: 1240
[libx264 @ 0x23e9640] frame B:136 Avg QP:20.27 size: 310
[libx264 @ 0x23e9640] consecutive B-frames: 19.8% 0.9% 0.0% 79.3%
[libx264 @ 0x23e9640] mb I I16..4: 18.8% 68.4% 12.8%
[libx264 @ 0x23e9640] mb P I16..4: 0.3% 0.3% 0.0% P16..4: 10.7% 2.3% 0.8% 0.0% 0.[0% skip:85.6%
[libx264 @ 0x23e9640] mb B I16..4: 0.0% 0.0% 0.0% B16..8: 9.1% 0.1% 0.0% direct: 0.1% skip:90.7% L0:41.2% L1:58.6% BI: 0.2%
[libx264 @ 0x23e9640] 8x8 transform intra:68.3% inter:97.5%
[libx264 @ 0x23e9640] coded y,u,v intra: 53.7% 26.9% 30.8% inter: 0.5% 0.2% 0.3%
[libx264 @ 0x23e9640] i16 v,h,dc,p: 70% 17% 1% 11%
[libx264 @ 0x23e9640] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 28% 25% 18% 4% 3% 4% 4% 6% 8%
[libx264 @ 0x23e9640] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 33% 29% 8% 4% 6% 6% 5% 5% 4%
[libx264 @ 0x23e9640] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 0x23e9640] ref P L0: 75.9% 5.1% 11.3% 7.7%
[libx264 @ 0x23e9640] ref B L0: 96.0% 3.1% 0.9%
[libx264 @ 0x23e9640] ref B L1: 95.8% 4.2%
[libx264 @ 0x23e9640] kb/s:895.99Do you have a idea why AVI makes problems ? What could be the solution ?
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No sound when capture screen
10 janvier 2018, par scrapyTo capture my pc screen with following
ffmpeg
command.ffmpeg -f pulse -ac 2 -i default -f x11grab -r 30 -s 1920x1080 -i :0.0 -acodec pcm_s16le -vcodec libx264 -preset ultrafast -threads 0 -y /tmp/output.mkv
The output displayed on my console when to execute the above command.
Guessed Channel Layout for Input Stream #0.0 : stereo
Input #0, pulse, from 'default':
Duration: N/A, start: 1515543051.106987, bitrate: 1536 kb/s
Stream #0:0: Audio: pcm_s16le, 48000 Hz, stereo, s16, 1536 kb/s
[x11grab @ 0x564bda5b8520] Stream #0: not enough frames to estimate rate; consider increasing probesize
Input #1, x11grab, from ':0.0':
Duration: N/A, start: 1515543052.415508, bitrate: N/A
Stream #1:0: Video: rawvideo (BGR[0] / 0x524742), bgr0, 1920x1080, 30 fps, 1000k tbr, 1000k tbn, 1000k tbc
No pixel format specified, yuv444p for H.264 encoding chosen.
Use -pix_fmt yuv420p for compatibility with outdated media players.
[libx264 @ 0x564bda5c1560] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 LZCNT
[libx264 @ 0x564bda5c1560] profile High 4:4:4 Predictive, level 4.0, 4:4:4 8-bit
[libx264 @ 0x564bda5c1560] 264 - core 148 r2748 97eaef2 - H.264/MPEG-4 AVC codec - Copyleft 2003-2016 - http://www.videolan.org/x264.html - options: cabac=0 ref=1 deblock=0:0:0 analyse=0:0 me=dia subme=0 psy=1 psy_rd=1.00:0.00 mixed_ref=0 me_range=16 chroma_me=1 trellis=0 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=6 threads=3 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=0 weightp=0 keyint=250 keyint_min=25 scenecut=0 intra_refresh=0 rc=crf mbtree=0 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=0
Output #0, matroska, to '/tmp/output.mkv':
Metadata:
encoder : Lavf57.56.101
Stream #0:0: Video: h264 (libx264) (H264 / 0x34363248), yuv444p, 1920x1080, q=-1--1, 30 fps, 1k tbn, 30 tbc
Metadata:
encoder : Lavc57.64.101 libx264
Side data:
cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
Stream #0:1: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 48000 Hz, stereo, s16, 1536 kb/s
Metadata:
encoder : Lavc57.64.101 pcm_s16le
Stream mapping:
Stream #1:0 -> #0:0 (rawvideo (native) -> h264 (libx264))
Stream #0:0 -> #0:1 (pcm_s16le (native) -> pcm_s16le (native))Playing a music when to make the screenshot,i can hear the music playing lound.
It’s strange that vedio came out perfectly without sound when to play the captured /tmp/output.mkv.Open my volume control with
pavucontrol
.Nothing in recording window, maybe the blank recording window result in no souond when to capture screen !
How to fix it ?