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  • Des sites réalisés avec MediaSPIP

    2 mai 2011, par

    Cette page présente quelques-uns des sites fonctionnant sous MediaSPIP.
    Vous pouvez bien entendu ajouter le votre grâce au formulaire en bas de page.

  • Publier sur MédiaSpip

    13 juin 2013

    Puis-je poster des contenus à partir d’une tablette Ipad ?
    Oui, si votre Médiaspip installé est à la version 0.2 ou supérieure. Contacter au besoin l’administrateur de votre MédiaSpip pour le savoir

  • XMP PHP

    13 mai 2011, par

    Dixit 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 (...)

Sur d’autres sites (5689)

  • Live streaming Channel Multiview used ffmpeg X11grab and shaka packager

    18 août 2020, par jgkim0518

    I have been trying to live stream channel multiview used xvfb, firefox, vlc, ffmpeg and shaka packager.
1). Making virtual display used Xvfb.
2). Popping up a web page used fireforx on 1).
3). Drawing nine video(each channel) used vlc plugin on 2).
4). Capturing 2) used ffmpeg library, x11grab.
5). Transcoding 4) to FHD(HEVC)+10 Audio(each channel sound + dummy), FHD(H.264)+no sound, HD(H.264)+no sound, SD(H.264)+no sound, nHD(H.264)+no sound
6). packaging 5) used Shaka Packager

    


    This is my command. shell script

    


    function exec-xvfb () {
$XVFB :$display_port -br -noreset -nolisten tcp -screen 0 1920x1080x24 &}

function exec-firefox () {
    AUDIO_CTRL_PATH="$audio_ctrl_port:/TEST/vlcenv/.sync.dat" VLC_INFO_PATH=/TEST/vlcenv/vlc_info.dat AUDIO_SHARE_KEY="$AUDIO_SHARE_KEY" AUDIO_SHARE_PATH=/TEST/vlcenv/.share.shm MOSAIC_META_PATH=/TEST/meta_bin.dat DISPLAY=":$display_port" $FIREFOX --display=:$display_port --no remote --profile /TEST/browser -width 1920 -height 1080 http://127.0.0.1:8021/template/best_channel_9_1/page/index.html &
}

function transcoder () {
    AUDIO_CTRL_PATH="$audio_ctrl_port:/TEST/vlcenv/.sync.dat" VLC_INFO_PATH=/TEST/vlcenv/vlc_info.dat 
AUDIO_SHARE_KEY="$AUDIO_SHARE_KEY" AUDIO_SHARE_PATH=/TEST/vlcenv/.share.shm 
MOSAIC_META_PATH=/TEST/meta_bin.dat DISPLAY=":$display_port" 
LD_LIBRARY_PATH=/transcoder/lib:/transcoder/lib/cuda /transcoder/gpu/transcoder -y -re \
    -analyzeduration 0 -f s16le -ar 48000 -ac 2 -pkt_size 128000 -i syc://@:$trc_sync_port?dummy=1 \
    -analyzeduration 0 -f s16le -ar 48000 -ac 2 -pkt_size 128000 -i syc://@:$(($trc_sync_port+1)) \
    -analyzeduration 0 -f s16le -ar 48000 -ac 2 -pkt_size 128000 -i syc://@:$(($trc_sync_port+2)) \
    -analyzeduration 0 -f s16le -ar 48000 -ac 2 -pkt_size 128000 -i syc://@:$(($trc_sync_port+3)) \
    -analyzeduration 0 -f s16le -ar 48000 -ac 2 -pkt_size 128000 -i syc://@:$(($trc_sync_port+4)) \
    -analyzeduration 0 -f s16le -ar 48000 -ac 2 -pkt_size 128000 -i syc://@:$(($trc_sync_port+5)) \
    -analyzeduration 0 -f s16le -ar 48000 -ac 2 -pkt_size 128000 -i syc://@:$(($trc_sync_port+6)) \
    -analyzeduration 0 -f s16le -ar 48000 -ac 2 -pkt_size 128000 -i syc://@:$(($trc_sync_port+7)) \
    -analyzeduration 0 -f s16le -ar 48000 -ac 2 -pkt_size 128000 -i syc://@:$(($trc_sync_port+8)) \
    -analyzeduration 0 -f s16le -ar 48000 -ac 2 -pkt_size 128000 -i syc://@:$(($trc_sync_port+9)) \
    -analyzeduration 0 -f x11grab -draw_mouse 0 -video_size 1920x1080 -framerate 29.97 -i :$display_port.0+0,0,nomouse \
    -c:a libfdk_aac -ar:a 48000 -ac:a 2 -b:a 128000 -vf hwupload_cuda=device=$gpu_no,scale_npp=1920:1080:format=yuv420p -gpu $gpu_no -c:v hevc_nvenc -preset:v fast -profile:v main -r 29.97 -g 15 -b:v 6000000 -bufsize 14000000 -maxrate 7000000 \
    -map 0:a -map 1:a -map 2:a -map 3:a -map 4:a -map 5:a -map 6:a -map 7:a -map 8:a -map 9:a -map 10:v -f mpegts udp://127.0.0.1:$trc_output_port?pkt_size=1316 \
    -an -vf hwupload_cuda=device=$gpu_no,scale_npp=1920:1080:format=yuv420p -gpu $gpu_no -c:v h264_nvenc -preset:v fast -profile:v main -r 29.97 -g 15 -b:v 4000000 -bufsize 8000000 -maxrate 4000000 -f mpegts udp://127.0.0.1:$(($trc_output_port+1))?pkt_size=1316 \
    -an -vf hwupload_cuda=device=$gpu_no,scale_npp=1280:720:format=yuv420p -gpu $gpu_no -c:v h264_nvenc -preset:v fast -profile:v main -r 29.97 -g 15 -b:v 2000000 -bufsize 4000000 -maxrate 2000000 -f mpegts udp://127.0.0.1:$(($trc_output_port+2))?pkt_size=1316 \
    -an -vf hwupload_cuda=device=$gpu_no,scale_npp=720:480:format=yuv420p -gpu $gpu_no -c:v h264_nvenc -preset:v fast -profile:v main -r 29.97 -g 15 -b:v 1500000 -bufsize 3000000 -maxrate 1500000 -f mpegts udp://127.0.0.1:$(($trc_output_port+3))?pkt_size=1316 \
    -an -vf hwupload_cuda=device=$gpu_no,scale_npp=640:360:format=yuv420p -gpu $gpu_no -c:v h264_nvenc -preset:v fast -profile:v main -r 29.97 -g 15 -b:v 800000 -bufsize 1600000 -maxrate 800000 -f mpegts udp://127.0.0.1:$(($trc_output_port+4))?pkt_size=1316 \main &
}

function packager () { 
    rm -rf $OUTPUT/*
    /packager/packager \ 

    "in=udp://127.0.0.1:$trc_output_port,stream=0,init_segment=$OUTPUT/audio/0/audio_4.mp4,segment_template=$OUTPUT/audio/0/\$Time\$.m4s" \                 "in=udp://127.0.0.1:$trc_output_port,stream=1,init_segment=$OUTPUT/audio/1/audio_4.mp4,segment_template=$OUTPUT/audio/1/\$Time\$.m4s" \
    "in=udp://127.0.0.1:$trc_output_port,stream=2,init_segment=$OUTPUT/audio/2/audio_4.mp4,segment_template=$OUTPUT/audio/2/\$Time\$.m4s" \
    "in=udp://127.0.0.1:$trc_output_port,stream=3,init_segment=$OUTPUT/audio/3/audio_4.mp4,segment_template=$OUTPUT/audio/3/\$Time\$.m4s" \
    "in=udp://127.0.0.1:$trc_output_port,stream=4,init_segment=$OUTPUT/audio/4/audio_4.mp4,segment_template=$OUTPUT/audio/4/\$Time\$.m4s" \
    "in=udp://127.0.0.1:$trc_output_port,stream=5,init_segment=$OUTPUT/audio/5/audio_4.mp4,segment_template=$OUTPUT/audio/5/\$Time\$.m4s" \
    "in=udp://127.0.0.1:$trc_output_port,stream=6,init_segment=$OUTPUT/audio/6/audio_4.mp4,segment_template=$OUTPUT/audio/6/\$Time\$.m4s" \
    "in=udp://127.0.0.1:$trc_output_port,stream=7,init_segment=$OUTPUT/audio/7/audio_4.mp4,segment_template=$OUTPUT/audio/7/\$Time\$.m4s" \
    "in=udp://127.0.0.1:$trc_output_port,stream=8,init_segment=$OUTPUT/audio/8/audio_4.mp4,segment_template=$OUTPUT/audio/8/\$Time\$.m4s" \
    "in=udp://127.0.0.1:$trc_output_port,stream=9,init_segment=$OUTPUT/audio/9/audio_4.mp4,segment_template=$OUTPUT/audio/9/\$Time\$.m4s" \
    "in=udp://127.0.0.1:$trc_output_port,stream=video,init_segment=$OUTPUT/video/0/video_4.mp4,segment_template=$OUTPUT/video/0/\$Time\$.m4s" \
    "in=udp://127.0.0.1:$(($trc_output_port+1)),stream=video,init_segment=$OUTPUT/video/1/video_4.mp4,segment_template=$OUTPUT/video/1/\$Time\$.m4s" \
    "in=udp://127.0.0.1:$(($trc_output_port+2)),stream=video,init_segment=$OUTPUT/video/2/video_4.mp4,segment_template=$OUTPUT/video/2/\$Time\$.m4s" \
    "in=udp://127.0.0.1:$(($trc_output_port+3)),stream=video,init_segment=$OUTPUT/video/3/video_4.mp4,segment_template=$OUTPUT/video/3/\$Time\$.m4s" \
    "in=udp://127.0.0.1:$(($trc_output_port+4)),stream=video,init_segment=$OUTPUT/video/4/video_4.mp4,segment_template=$OUTPUT/video/4/\$Time\$.m4s" \
    --segment_duration 10 --fragment_duration 10 --minimum_update_period 10 --allow_codec_switching --preserved_segments_outside_live_window 24 --time_shift_buffer_depth 40 \
    --mpd_output $OUTPUT/$output_mpd.mpd
}


    


    vlc warning and error messages when duration 7

    


    ...
adaptive debug: Timeline
adaptive debug: Element #1 d=669670 r=0 @t=6321195
adaptive debug: Element #2 d=576576 r=0 @t=6990865
adaptive debug: Element #3 d=669670 r=0 @t=7567441
adaptive debug: Element #4 d=672673 r=0 @t=8237111
adaptive debug: Element #5 d=561561 r=0 @t=8909784
adaptive debug: Element #6 d=654655 r=0 @t=9471345
adaptive debug: Element #7 d=630631 r=0 @t=10126000
adaptive debug: Updated MPD, next update in 7s
main warning: picture is too late to be displayed (missing 223 ms)
main warning: picture is too late to be displayed (missing 157 ms)
main warning: picture is too late to be displayed (missing 91 ms)
main warning: picture is too late to be displayed (missing 24 ms)
adaptive debug: Retrieving http://192.168.0.181:81/300/audio/5/9451440.m4s @0
adaptive debug: Retrieving http://192.168.0.181:81/300/video/0/9475185.m4s @0
adaptive debug: Retrieving http://192.168.0.181:81/300/300.mpd @0
main debug: creating access: http://192.168.0.181:81/300/300.mpd
main debug: (path: \\192.168.0.181:81\300\300.mpd)
main debug: looking for access module matching "http": 26 candidates
http debug: resolving 192.168.0.181 ...
http debug: outgoing request: GET /300/300.mpd HTTP/1.1 Host:192.168.0.181:81 Accept: */* Accept-Language: en_US User-Agent: VLC/3.0.11 LibVLC/3.0.11 Range: bytes=0- 
http debug: incoming response: HTTP/1.1 206 Partial Content Server: nginx Date: Mon, 17 Aug 2020 09:10:08 GMT Content-Type: application/octet-stream Content-Length: 10406 Last-Modified: Mon, 17 Aug 2020 09:10:08 GMT Connection: keep-alive ETag: "5f3a4970-28a6" Content-Range: bytes 0-10405/10406 
main debug: using access module "access"
main debug: looking for stream_filter module matching "prefetch,cache_block": 24 candidates
prefetch debug: using 10406 bytes buffer, 10406 bytes read
main debug: using stream_filter module "prefetch"
main debug: looking for stream_filter module matching "any": 24 candidates
main debug: no stream_filter modules matched
main debug: looking for stream_filter module matching "inflate": 24 candidates
main debug: no stream_filter modules matched
prefetch debug: end of stream
main debug: removing module "prefetch"
main debug: removing module "access"
main debug: looking for xml reader module matching "any": 1 candidates
main debug: using xml reader module "xml"
adaptive debug: MPD profile=urn:mpeg:dash:profile:isoff-live:2011 mediaPresentationDuration=0 minBufferTime=2
adaptive debug: BaseUrl=http://192.168.0.181:81/300/
adaptive debug: Period
adaptive debug: BaseAdaptationSet 0
adaptive debug: Representation 0 [mp4a]
adaptive debug: InitSegmentTemplate #0 url=http://192.168.0.181:81/300/audio/0/audio_4.mp4 duration 0
adaptive debug: SegmentTemplate #12 url=http://192.168.0.181:81/300/audio/0/$Time$.m4s duration 0
adaptive debug: Timeline
adaptive debug: Element #1 d=629760 r=1 @t=6930480
adaptive debug: Element #3 d=631680 r=0 @t=8190000
adaptive debug: Element #4 d=629760 r=3 @t=8821680
adaptive debug: Representation 1 [mp4a]
adaptive debug: InitSegmentTemplate #0 url=http://192.168.0.181:81/300/audio/1/audio_4.mp4 duration 0
adaptive debug: SegmentTemplate #12 url=http://192.168.0.181:81/300/audio/1/$Time$.m4s duration 0
...
adaptive debug: Timeline
adaptive debug: Element #1 d=576576 r=0 @t=6990865
adaptive debug: Element #2 d=669670 r=0 @t=7567441
adaptive debug: Element #3 d=672673 r=0 @t=8237111
adaptive debug: Element #4 d=561561 r=0 @t=8909784
adaptive debug: Element #5 d=654655 r=0 @t=9471345
adaptive debug: Element #6 d=630631 r=0 @t=10126000
adaptive debug: Element #7 d=666666 r=0 @t=10756631
adaptive debug: Updated MPD, next update in 7s
main error: ES_OUT_SET_(GROUP_)PCR is called too late (pts_delay increased to 2168 ms)
main debug: ES_OUT_RESET_PCR called
main debug: Buffering 0%
main debug: Buffering 1%
main debug: Buffering 2%
main debug: Received first picture
mmdevice debug: state changed: 0
main debug: Buffering 4%
...
main debug: Buffering 15%
wasapi debug: reset
main debug: Buffering 17%
...
main debug: Buffering 98%
main debug: Stream buffering done (2176 ms in 16 ms)
main debug: Decoder wait done in 0 ms
main warning: playback too early (-110003): down-sampling
mmdevice debug: state changed: 1
adaptive debug: Retrieving http://192.168.0.181:81/300/video/0/10129840.m4s @0
adaptive debug: Retrieving http://192.168.0.181:81/300/audio/5/10081200.m4s @0
adaptive debug: Retrieving http://192.168.0.181:81/300/300.mpd @0
main debug: creating access: http://192.168.0.181:81/300/300.mpd
main debug: (path: \\192.168.0.181:81\300\300.mpd)
main debug: looking for access module matching "http": 26 candidates
http debug: resolving 192.168.0.181 ...
http debug: outgoing request: GET /300/300.mpd HTTP/1.1 Host: 192.168.0.181:81 Accept: */* Accept-Language: en_US User-Agent: VLC/3.0.11 LibVLC/3.0.11 Range: bytes=0- 
http debug: incoming response: HTTP/1.1 206 Partial Content Server: nginx Date: Mon, 17 Aug 2020 09:10:15 GMT Content-Type: application/octet-stream Content-Length: 10387 Last-Modified: Mon, 17 Aug 2020 09:10:15 GMT Connection: keep-alive ETag: "5f3a4977-2893" Content-Range: bytes 0-10386/10387 
main debug: using access module "access"
main debug: looking for stream_filter module matching "prefetch,cache_block": 24 candidates
prefetch debug: using 10387 bytes buffer, 10387 bytes read
main debug: using stream_filter module "prefetch"
main debug: looking for stream_filter module matching "any": 24 candidates
main debug: no stream_filter modules matched
main debug: looking for stream_filter module matching "inflate": 24 candidates
main debug: no stream_filter modules matched
prefetch debug: end of stream
main debug: removing module "prefetch"
main debug: removing module "access"
main debug: looking for xml reader module matching "any": 1 candidates
main debug: using xml reader module "xml"
adaptive debug: MPD profile=urn:mpeg:dash:profile:isoff-live:2011 mediaPresentationDuration=0 minBufferTime=2
adaptive debug: BaseUrl=http://192.168.0.181:81/300/
adaptive debug: Period
adaptive debug: BaseAdaptationSet 0
adaptive debug: Representation 0 [mp4a]
adaptive debug: InitSegmentTemplate #0 url=http://192.168.0.181:81/300/audio/0/audio_4.mp4 duration 0
adaptive debug: SegmentTemplate #13 url=http://192.168.0.181:81/300/audio/0/$Time$.m4s duration 0
...


    


    keep getting a similar message

    


    vlc warning and error messages when duration 5

    


    adaptive debug: Timeline
adaptive debug: Element #1 d=456457 r=0 @t=9501375
adaptive debug: Element #2 d=453453 r=0 @t=9957832
adaptive debug: Element #3 d=471472 r=0 @t=10411285
adaptive debug: Element #4 d=381381 r=0 @t=10882757
adaptive debug: Element #5 d=477478 r=0 @t=11264138
adaptive debug: Element #6 d=468468 r=0 @t=11741616
adaptive debug: Element #7 d=474475 r=0 @t=12210084
adaptive debug: Element #8 d=378378 r=0 @t=12684559
adaptive debug: Element #9 d=468468 r=0 @t=13062937
adaptive debug: Element #10 d=474475 r=0 @t=13531405
adaptive debug: Updated MPD, next update in 5s
adaptive debug: Retrieving http://192.168.0.181:81/300/audio/5/8101680.m4s @0
main error: ES_OUT_SET_(GROUP_)PCR is called too late (pts_delay increased to 4794 ms)
main warning: buffer too late (-588333 us): dropped
main debug: ES_OUT_RESET_PCR called
main debug: Buffering 0%
main debug: Buffering 1%
main debug: Buffering 2%
main debug: Buffering 3%
...
main debug: Buffering 15%
main debug: Received first picture
main debug: Buffering 16%
...
main debug: Buffering 99%
main debug: Stream buffering done (4804 ms in 122 ms)
main debug: Decoder wait done in 0 ms
main debug: inserting 3246 zeroes
mmdevice debug: state changed: 0
wasapi debug: reset
main warning: playback too early (-85958): down-sampling
mmdevice debug: state changed: 1
adaptive debug: Retrieving http://192.168.0.181:81/300/video/0/8114825.m4s @0
adaptive debug: Retrieving http://192.168.0.181:81/300/300.mpd @0
main debug: creating access: http://192.168.0.181:81/300/300.mpd
main debug: (path: \\192.168.0.181:81\300\300.mpd)
main debug: looking for access module matching "http": 26 candidates
http debug: resolving 192.168.0.181 ...
http debug: outgoing request: GET /300/300.mpd HTTP/1.1 Host: 192.168.0.181:81 Accept: */* Accept-Language: en_US User-Agent: VLC/3.0.11 LibVLC/3.0.11 Range: bytes=0- 
http debug: incoming response: HTTP/1.1 206 Partial Content Server: nginx Date: Mon, 17 Aug 2020 09:18:28 GMT Content-Type: application/octet-stream Content-Length: 12632 Last-Modified: Mon, 17 Aug 2020 09:18:28 GMT Connection: keep-alive ETag: "5f3a4b64-3158" Content-Range: bytes 0-12631/12632 
main debug: using access module "access"
main debug: looking for stream_filter module matching "prefetch,cache_block": 24 candidates
prefetch debug: using 12632 bytes buffer, 12632 bytes read
main debug: using stream_filter module "prefetch"
main debug: looking for stream_filter module matching "any": 24 candidates
main debug: no stream_filter modules matched
main debug: looking for stream_filter module matching "inflate": 24 candidates
main debug: no stream_filter modules matched
prefetch debug: end of stream
main debug: removing module "prefetch"
main debug: removing module "access"
main debug: looking for xml reader module matching "any": 1 candidates
main debug: using xml reader module "xml"
adaptive debug: MPD profile=urn:mpeg:dash:profile:isoff-live:2011 mediaPresentationDuration=0 minBufferTime=2
adaptive debug: BaseUrl=http://192.168.0.181:81/300/
adaptive debug: Period
adaptive debug: BaseAdaptationSet 0
adaptive debug: Representation 0 [mp4a]
adaptive debug: InitSegmentTemplate #0 url=http://192.168.0.181:81/300/audio/0/audio_4.mp4 duration 0
adaptive debug: SegmentTemplate #12 url=http://192.168.0.181:81/300/audio/0/$Time$.m4s duration 0
...
adaptive debug: Timeline
adaptive debug: Element #1 d=453453 r=0 @t=9957832
adaptive debug: Element #2 d=471472 r=0 @t=10411285
adaptive debug: Element #3 d=381381 r=0 @t=10882757
adaptive debug: Element #4 d=477478 r=0 @t=11264138
adaptive debug: Element #5 d=468468 r=0 @t=11741616
adaptive debug: Element #6 d=474475 r=0 @t=12210084
adaptive debug: Element #7 d=378378 r=0 @t=12684559
adaptive debug: Element #8 d=468468 r=0 @t=13062937
adaptive debug: Element #9 d=474475 r=0 @t=13531405
adaptive debug: Element #10 d=459459 r=0 @t=14005880
adaptive debug: Updated MPD, next update in 5s
adaptive debug: Retrieving http://192.168.0.181:81/300/audio/5/8550960.m4s @0
main warning: picture is too late to be displayed (missing 383 ms)
main warning: picture is too late to be displayed (missing 317 ms)
main warning: picture is too late to be displayed (missing 251 ms)
main warning: picture is too late to be displayed (missing 184 ms)
main warning: picture is too late to be displayed (missing 117 ms)
adaptive debug: Retrieving http://192.168.0.181:81/300/300.mpd @0
main debug: creating access: http://192.168.0.181:81/300/300.mpd
main debug: (path: \\192.168.0.181:81\300\300.mpd)
main debug: looking for access module matching "http": 26 candidates
http debug: resolving 192.168.0.181 ...
http debug: outgoing request: GET /300/300.mpd HTTP/1.1 Host: 192.168.0.181:81 Accept: */* Accept-Language: en_US User-Agent: VLC/3.0.11 LibVLC/3.0.11 Range: bytes=0- 
http debug: incoming response: HTTP/1.1 206 Partial Content Server: nginx Date: Mon, 17 Aug 2020 09:18:33 GMT Content-Type: application/octet-stream Content-Length: 12596 Last-Modified: Mon, 17 Aug 2020 09:18:33 GMT Connection: keep-alive ETag: "5f3a4b69-3134" Content-Range: bytes 0-12595/12596 
main debug: using access module "access"
main debug: looking for stream_filter module matching "prefetch,cache_block": 24 candidates
prefetch debug: using 12596 bytes buffer, 12596 bytes read
main debug: using stream_filter module "prefetch"
main debug: looking for stream_filter module matching "any": 24 candidates
main debug: no stream_filter modules matched
main debug: looking for stream_filter module matching "inflate": 24 candidates
main debug: no stream_filter modules matched
prefetch debug: end of stream
main debug: removing module "prefetch"
main debug: removing module "access"
main debug: looking for xml reader module matching "any": 1 candidates
main debug: using xml reader module "xml"
adaptive debug: MPD profile=urn:mpeg:dash:profile:isoff-live:2011 mediaPresentationDuration=0 minBufferTime=2
adaptive debug: BaseUrl=http://192.168.0.181:81/300/
adaptive debug: Period
adaptive debug: BaseAdaptationSet 0
adaptive debug: Representation 0 [mp4a]
adaptive debug: InitSegmentTemplate #0 url=http://192.168.0.181:81/300/audio/0/audio_4.mp4 duration 0
adaptive debug: SegmentTemplate #13 url=http://192.168.0.181:81/300/audio/0/$Time$.m4s duration 0
...


    


    keep getting a similar message

    


    This is played on vlc. this is duration 10 sec. but I want to live streaming duration 5 under.
cuda, framerate, GOP size and bitrate are fixed.

    


    I know that is inefficient. but now, I have to live stream channel multiview duration 5 under. How can I achieve ? please help me.

    


  • ffmpeg change resolution by condition

    29 août 2020, par Tom

    I want to change my video resolution with ffmpeg :

    



    -s 852×480


    



    How can I do it only when video width or height greater than 852×480 ?

    



    I want something like this with ffmpeg, not with my programming language :

    



    if video.width > 852:
   resize width and proportionally resize height

if video.height > 480:
   resize height and proportionally resize width

if video.width > 852 and video.height > 480:
   resize height width


    


  • ffmpeg extract subtitles with unknown codec [migrated]

    21 juillet 2014, par user2987221

    I’m writing a program which extracts images and GPS coordinates from files that were created by car video recorder.
    In many models it creates two separate files Video and GPS but not all, some recorders write information about GPS – coordinates into video file subtitles. So I Faced with the problem of extracting subtitles from video file.
    Using such command

    d:\test\ffmpeg -i "d:\test\example_1.MOV" -an -vn -c:s copy -f rawvideo  d:\test\sub.txt

    I got subtitles from file "example_1.MOV", but with another file "example_2.MOV" I got a message "Output file #0 does not contain any stream"

    I know exactly that this file has a subtitles so I tried to figure out what streams does this file contain using command

    d:\Test\ffprobe -show_streams -i "d:\test\example_2.MOV"

    i got such information

    d:\test\ffprobe -show_streams -i "d:\test\example_2.
    
MOV"
    
ffprobe version N-64836-gce385c8 Copyright (c) 2007-2014 the FFmpeg developers
    
  built on Jul 20 2014 23:42:59 with gcc 4.8.3 (GCC)
    
  configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-av
    
isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enab
    
le-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --
    
enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-lib
    
modplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrw
    
b --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinge
    
r --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --en
    
able-libvidstab --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis
    
 --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-
    
libx265 --enable-libxavs --enable-libxvid --enable-decklink --enable-zlib
    
  libavutil      52. 92.101 / 52. 92.101
    
  libavcodec     55. 69.100 / 55. 69.100
    
  libavformat    55. 48.101 / 55. 48.101
    
  libavdevice    55. 13.102 / 55. 13.102
    
  libavfilter     4. 11.102 /  4. 11.102
    
  libswscale      2.  6.100 /  2.  6.100
    
  libswresample   0. 19.100 /  0. 19.100
    
  libpostproc    52.  3.100 / 52.  3.100
    
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'd:\test\example_2.MOV':
    
  Metadata:
    
    major_brand     : qt
    
    minor_version   : 0
    
    compatible_brands: qt
    
    creation_time   : 2014-03-30 16:05:10
    
    comment         : RELLA A7L
    
    comment-pra     : RELLA A7L
    
  Duration: 00:02:34.72, start: 0.033367, bitrate: 9039 kb/s
    
    Stream #0:0(eng): Video: h264 (Main) (avc1 / 0x31637661), yuvj420p(pc), 1280
    
x720 [SAR 1:1 DAR 16:9], 9014 kb/s, 29.97 fps, 29.97 tbr, 30k tbn, 59.94 tbc (de
    
fault)
    
    Metadata:
    
      creation_time   : 2014-03-30 16:05:10
    
      handler_name    : Ambarella AVC
    
      encoder         : Ambarella AVC encoder
    
    Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 12
    
8 kb/s (default)
    
    Metadata:
    
      creation_time   : 2014-03-30 16:05:10
    
      handler_name    : Ambarella AAC
    
    Stream #0:2(eng): Data: none (RVMI / 0x494D5652), 0 kb/s
    
    Metadata:
    
      handler_name    :  GPS and G-Sensor
    
Unsupported codec with id 0 for input stream 2
    
[STREAM]
    
index=0
    
codec_name=h264
    
codec_long_name=H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10
    
profile=Main
    
codec_type=video
    
codec_time_base=1001/60000
    
codec_tag_string=avc1
    
codec_tag=0x31637661
    
width=1280
    
height=720
    
has_b_frames=0
    
sample_aspect_ratio=1:1
    
display_aspect_ratio=16:9
    
pix_fmt=yuvj420p
    
level=31
    
color_range=pc
    
color_space=unknown
    
timecode=N/A
    
id=N/A
    
r_frame_rate=30000/1001
    
avg_frame_rate=30000/1001
    
time_base=1/30000
    
start_pts=-1001
    
start_time=-0.033367
    
duration_ts=4638634
    
duration=154.621133
    
bit_rate=9014524
    
max_bit_rate=N/A
    
nb_frames=4634
    
nb_read_frames=N/A
    
nb_read_packets=N/A
    
DISPOSITION:default=1
    
DISPOSITION:dub=0
    
DISPOSITION:original=0
    
DISPOSITION:comment=0
    
DISPOSITION:lyrics=0
    
DISPOSITION:karaoke=0
    
DISPOSITION:forced=0
    
DISPOSITION:hearing_impaired=0
    
DISPOSITION:visual_impaired=0
    
DISPOSITION:clean_effects=0
    
DISPOSITION:attached_pic=0
    
TAG:creation_time=2014-03-30 16:05:10
    
TAG:language=eng
    
TAG:handler_name=Ambarella AVC
    
TAG:encoder=Ambarella AVC encoder
    
[/STREAM]
    
[STREAM]
    
index=1
    
codec_name=aac
    
codec_long_name=AAC (Advanced Audio Coding)
    
profile=unknown
    
codec_type=audio
    
codec_time_base=1/48000
    
codec_tag_string=mp4a
    
codec_tag=0x6134706d
    
sample_fmt=fltp
    
sample_rate=48000
    
channels=2
    
channel_layout=stereo
    
bits_per_sample=0
    
id=N/A
    
r_frame_rate=0/0
    
avg_frame_rate=0/0
    
time_base=1/48000
    
start_pts=0
    
start_time=0.000000
    
duration_ts=7421952
    
duration=154.624000
    
bit_rate=128000
    
max_bit_rate=N/A
    
nb_frames=7248
    
nb_read_frames=N/A
    
nb_read_packets=N/A
    
DISPOSITION:default=1
    
DISPOSITION:dub=0
    
DISPOSITION:original=0
    
DISPOSITION:comment=0
    
DISPOSITION:lyrics=0
    
DISPOSITION:karaoke=0
    
DISPOSITION:forced=0
    
DISPOSITION:hearing_impaired=0
    
DISPOSITION:visual_impaired=0
    
DISPOSITION:clean_effects=0
    
DISPOSITION:attached_pic=0
    
TAG:creation_time=2014-03-30 16:05:10
    
TAG:language=eng
    
TAG:handler_name=Ambarella AAC
    
[/STREAM]
    
[STREAM]
    
index=2
    
codec_name=unknown
    
codec_long_name=unknown
    
profile=unknown
    
codec_type=data
    
codec_time_base=0/1
    
codec_tag_string=RVMI
    
codec_tag=0x494d5652
    
id=N/A
    
r_frame_rate=0/0
    
avg_frame_rate=0/0
    
time_base=1/50
    
start_pts=0
    
start_time=0.000000
    
duration_ts=7736
    
duration=154.720000
    
bit_rate=255
    
max_bit_rate=N/A
    
nb_frames=309
    
nb_read_frames=N/A
    
nb_read_packets=N/A
    
DISPOSITION:default=0
    
DISPOSITION:dub=0
    
DISPOSITION:original=0
    
DISPOSITION:comment=0
    
DISPOSITION:lyrics=0
    
DISPOSITION:karaoke=0
    
DISPOSITION:forced=0
    
DISPOSITION:hearing_impaired=0
    
DISPOSITION:visual_impaired=0
    
DISPOSITION:clean_effects=0
    
DISPOSITION:attached_pic=0
    
TAG:language=eng
    
TAG:handler_name= GPS and G-Sensor
    
[/STREAM]

    So ffmpeg does’t want to extract subtitles from this file.
    I’d be glad for any suggestions how to extract subtitles from video

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