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12 avril 2011, parChaque utilisateur dispose d’une page de profil lui permettant de modifier ses informations personnelle. Dans le menu de haut de page par défaut, un élément de menu est automatiquement créé à l’initialisation de MediaSPIP, visible uniquement si le visiteur est identifié sur le site.
L’utilisateur a accès à la modification de profil depuis sa page auteur, un lien dans la navigation "Modifier votre profil" est (...) -
Configurer la prise en compte des langues
15 novembre 2010, parAccéder à la configuration et ajouter des langues prises en compte
Afin de configurer la prise en compte de nouvelles langues, il est nécessaire de se rendre dans la partie "Administrer" du site.
De là, dans le menu de navigation, vous pouvez accéder à une partie "Gestion des langues" permettant d’activer la prise en compte de nouvelles langues.
Chaque nouvelle langue ajoutée reste désactivable tant qu’aucun objet n’est créé dans cette langue. Dans ce cas, elle devient grisée dans la configuration et (...) -
XMP PHP
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Sur d’autres sites (9304)
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HEVC with alpha [closed]
3 mai 2024, par foxhableI trying create HEVC with alpha video from png images through ffmpeg.


When i try, it outputs a video that works, has a transparent background and opens in QuickTime, but does not open in Safari. Then i try creating in prores 4444 codec and convert from macOS Context Menu -> Encode Selected Video Files with HEVC 1080p and Preserve Transparency. It has work - video with transparent background, open in QuickTime and in Safari.


So i tried understand what a difference in meta data and only what i find its working video has
HVEC
encoder, but not working hasLavc61.5.103 hevc_videotoolbox
. Can i somehow programmatically or from utilities like ffmpeg create video with HEVC With alpha, which working like from macOS context menu ? macOS context menu doesnt fit because i cant compress or create many videos

Detail info


I have example of working video. Info from ffprobe


ffprobe movie-hevc.mov
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '.\movie-hevc.mov':
 Metadata:
 major_brand : qt
 minor_version : 0
 compatible_brands: qt
 creation_time : 2021-01-02T10:33:38.000000Z
 Duration: 00:00:09.02, start: 0.000000, bitrate: 4053 kb/s
 Stream #0:0[0x1](und): Video: hevc (Main) (hvc1 / 0x31637668), yuv420p(tv, progressive), 1280x720 [SAR 1:1 DAR 16:9], 4046 kb/s, 60 fps, 60 tbr, 600 tbn (default)
 Metadata:
 creation_time : 2021-01-02T10:33:38.000000Z
 handler_name : Core Media Video
 vendor_id : [0][0][0][0]
 encoder : HEVC



Info about video which i create in prores by ffmpeg command, then convert through macOS context menu


command :


ffmpeg -i a%d.png -r 30 -c:v prores_ks -profile:v 4 -allow_sw 1 -alpha_quality 1 -vtag hvc1 prores.mov



info after converting


ffprobe .\native-hevc.mov
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '.\native-hevc.mov':
 Metadata:
 major_brand : qt
 minor_version : 0
 compatible_brands: qt
 creation_time : 2024-05-03T07:04:26.000000Z
 Duration: 00:00:12.77, start: 0.000000, bitrate: 8796 kb/s
 Stream #0:0[0x1](und): Video: hevc (Main) (hvc1 / 0x31637668), yuv420p(tv, bt709), 1920x1920, 8792 kb/s, 30 fps, 30 tbr, 15360 tbn (default)
 Metadata:
 creation_time : 2024-05-03T07:04:27.000000Z
 handler_name : Core Media Video
 vendor_id : [0][0][0][0]
 encoder : HEVC



Info about video which i`m create direct in hevc by ffmpeg command


ffmpeg -i a%d.png -r 30 -c:v hevc_videotoolbox -allow_sw 1 -alpha_quality 1 -vtag hvc1 ffmpeg-hevc.mov



Info :


ffprobe .\ffmpeg-hevc.mov
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '.\ffmpeg-hevc.mov':
 Metadata:
 major_brand : qt
 minor_version : 512
 compatible_brands: qt
 encoder : Lavf61.3.103
 Duration: 00:00:12.77, start: 0.000000, bitrate: 3437 kb/s
 Stream #0:0[0x1]: Video: hevc (Main) (hvc1 / 0x31637668), yuv420p(tv, bottom coded first (swapped)), 1920x1920, 3435 kb/s, 30 fps, 30 tbr, 15360 tbn (default)
 Metadata:
 handler_name : VideoHandler
 vendor_id : FFMP
 encoder : Lavc61.5.103 hevc_videotoolbox



also i tried :


- 

- props
-allow_sw 0
- get error -alpha-quality 0.75
,-pix_fmt bgra
- safari not open, QT yes, transparent bg- without
-vtag hvc1
- QuickTime cannot open - Tried convert from
webm
tohevc_videotoolbox
- safari not open, QT yes, transparent bg - tried convert
webm
into pngs and inhevc_videotoolbox
- safari not open, QT yes, transparent bg












Tried answers :




mac info :


- 

- macOS Monterey 12.7.2
- Mac mini (Late 2012)
- Core i5 3210M
- Graphics Intel HD 4000










- props
-
avutil : Fix linking x86 asm constants with Clang in MSVC mode
12 juin, par Martin Storsjöavutil : Fix linking x86 asm constants with Clang in MSVC mode
This fixes building with Clang in MSVC mode, for x86, which was
broken in 6e49b8699657b808b7dc80033f2c3f2d0e029fa3 (in Nov 2024) ;
previously it failed with undefined symbols for the constants
defined with DECLARE_ASM_CONST, accessed via inline assembly.Before 57861911a34e1c33796be97f2b2f44e05fffd647, there was an
#elif defined(__GNUC__) || defined(__clang__)
case before the
#elif defined(_MSC_VER)
case for defining DECLARE_ASM_CONST, which included av_used.
(This case included the explicit "defined(__clang__)" since
f637046d3134a331e4b5a7243ac3dfb92735b8a5.)After 57861911a34e1c33796be97f2b2f44e05fffd647, it used the
generic definition of DECLARE_ASM_CONST that also included
av_used - which also worked for Clang in MSVC mode. But after
6e49b8699657b808b7dc80033f2c3f2d0e029fa3, Clang in MSVC mode
ended up using the MSVC specific variant which lacked the
av_used declaration, causing linker errors due to undefined
symbols.Signed-off-by : Martin Storsjö <martin@martin.st>
-
FFmpeg wrong codecstring for DASH manifest [closed]
21 novembre 2024, par SuxsemI'm trying to create a DASH stream with ffmpeg with the following command :


ffmpeg -i rtsp://admin:***@camera-retro.lan/ch0_0 ^
 -map 0 ^
 -codec:v copy ^
 -codec:a copy ^
 -f dash ^
 -use_template 1 ^
 -use_timeline 1 ^
 -window_size 50 ^
 -extra_window_size 5 ^
 -seg_duration 5 ^
 tmp/output.mpd



The problem is the generated manifest doesn't contain a valid codecstring for the video part (note the codecs="hev1" part) and thus is not playable by the browser :


<?xml version="1.0" encoding="utf-8"?>
<mpd xmlns="urn:mpeg:dash:schema:mpd:2011" profiles="urn:mpeg:dash:profile:isoff-live:2011" type="dynamic" minimumupdateperiod="PT6S" suggestedpresentationdelay="PT6S" availabilitystarttime="2024-11-21T12:05:52.604Z" publishtime="2024-11-21T12:05:57.559Z" timeshiftbufferdepth="PT5M1.9S" maxsegmentduration="PT5.0S" minbuffertime="PT12.0S">
 <programinformation>
 
 </programinformation>
 <servicedescription>
 </servicedescription>
 <period start="PT0.0S">
 <adaptationset contenttype="video" startwithsap="1" segmentalignment="true" bitstreamswitching="true" maxwidth="2304" maxheight="1296" par="16:9">
 <representation mimetype="video/mp4" codecs="hev1" bandwidth="822093" width="2304" height="1296" scantype="unknown" sar="1:1">
 <segmenttemplate timescale="90000" initialization="init-stream$RepresentationID$.m4s" media="chunk-stream$RepresentationID$-$Number%05d$.m4s" startnumber="1">
 <segmenttimeline>
 <s t="0" d="542990"></s>
 </segmenttimeline>
 </segmenttemplate>
 </representation>
 </adaptationset>
 <adaptationset contenttype="audio" startwithsap="1" segmentalignment="true" bitstreamswitching="true">
 <representation mimetype="audio/mp4" codecs="mp4a.40.2" bandwidth="34143" audiosamplingrate="16000">
 <audiochannelconfiguration schemeiduri="urn:mpeg:dash:23003:3:audio_channel_configuration:2011" value="1"></audiochannelconfiguration>
 <segmenttemplate timescale="16000" initialization="init-stream$RepresentationID$.m4s" media="chunk-stream$RepresentationID$-$Number%05d$.m4s" startnumber="1">
 <segmenttimeline>
 <s t="0" d="81001"></s>
 </segmenttimeline>
 </segmenttemplate>
 </representation>
 </adaptationset>
 </period>
</mpd>



This is the output of ffprobe :


SDP:
v=0
o=- 1732188474342789 1 IN IP4 192.168.12.162
s=Session streamed by "rRTSPServer"
i=ch0_0.h264
t=0 0
a=tool:LIVE555 Streaming Media v2023.01.19
a=type:broadcast
a=control:*
a=range:npt=now-
a=x-qt-text-nam:Session streamed by "rRTSPServer"
a=x-qt-text-inf:ch0_0.h264
m=video 0 RTP/AVP 96
c=IN IP4 0.0.0.0
b=AS:700
a=rtpmap:96 H265/90000
a=fmtp:96 profile-space=0;profile-id=1;tier-flag=0;level-id=186;interop-constraints=000000000000;sprop-vps=QAEMAf//AWAAAAMAAAMAAAMAAAMAuqwJ;sprop-sps=QgEBAWAAAAMAAAMAAAMAAAMAuqABICAFEf5a7kSIi/Lc1AQEBAI=;sprop-pps=RAHA8oSJAzJA
a=control:track1
m=audio 0 RTP/AVP 97
c=IN IP4 0.0.0.0
b=AS:32
a=rtpmap:97 MPEG4-GENERIC/16000
a=fmtp:97 streamtype=5;profile-level-id=1;mode=AAC-hbr;sizelength=13;indexlength=3;indexdeltalength=3;config=1408
a=control:track2



it seems to me that all codec informations are present :


a=fmtp:96 profile-space=0;profile-id=1;tier-flag=0;level-id=186;interop-constraints=000000000000;



why ffmpeg is putting only codecs="hev1" instead of the full codecstring (containing the profile, the level and the constraints) ?


Thank you