
Recherche avancée
Autres articles (61)
-
Gestion générale des documents
13 mai 2011, parMédiaSPIP ne modifie jamais le document original mis en ligne.
Pour chaque document mis en ligne il effectue deux opérations successives : la création d’une version supplémentaire qui peut être facilement consultée en ligne tout en laissant l’original téléchargeable dans le cas où le document original ne peut être lu dans un navigateur Internet ; la récupération des métadonnées du document original pour illustrer textuellement le fichier ;
Les tableaux ci-dessous expliquent ce que peut faire MédiaSPIP (...) -
Les vidéos
21 avril 2011, parComme les documents de type "audio", Mediaspip affiche dans la mesure du possible les vidéos grâce à la balise html5 .
Un des inconvénients de cette balise est qu’elle n’est pas reconnue correctement par certains navigateurs (Internet Explorer pour ne pas le nommer) et que chaque navigateur ne gère en natif que certains formats de vidéos.
Son avantage principal quant à lui est de bénéficier de la prise en charge native de vidéos dans les navigateur et donc de se passer de l’utilisation de Flash et (...) -
Des sites réalisés avec MediaSPIP
2 mai 2011, parCette page présente quelques-uns des sites fonctionnant sous MediaSPIP.
Vous pouvez bien entendu ajouter le votre grâce au formulaire en bas de page.
Sur d’autres sites (6374)
-
Why VLC not display RTP stream
5 janvier 2018, par Alexandr LukovnikovI am new in RTP. I whant to start RTSP server on embeded device. Now I can whatching video file, that stored in flash memory. But when I start translate video, that encoded whith x264, VLC not display anything.
Just buffering, nothing elsecore debug: `rtsp://172.16.50.194:1935/live1.sdp' successfully opened
core debug: Buffering 0%
packetizer_h264 debug: found NAL_SPS (sps_id=0)
core debug: Stream buffering done (11 ms in 133 ms)
core debug: Decoder wait done in 0 ms
packetizer_h264 debug: found NAL_PPS (pps_id=0 sps_id=0)
core error: ES_OUT_SET_(GROUP_)PCR is called too late (pts_delay increased to 30 ms)
core error: ES_OUT_RESET_PCR called
core debug: Buffering 0%
core debug: Buffering 0%
core debug: Buffering 0%
core debug: Stream buffering done (111 ms in 706 ms)
core debug: Decoder wait done in 0 ms
core error: ES_OUT_SET_(GROUP_)PCR is called too late (pts_delay increased to 594 ms)
core error: ES_OUT_RESET_PCR called
core debug: Buffering 0%
...
core debug: Buffering 0%
live555 warning: no data received in 10s, eof ?
core debug: EOF reachedThat is Wireshark dump
SPS slice
1111 0100 = Profile_idc: Unknown (244)
0... .... = Constraint_set0_flag: 0
.0.. .... = Constraint_set1_flag: 0
..0. .... = Constraint_set2_flag: 0
...0 .... = Constraint_set3_flag: 0
.... 0... = Constraint_set4_flag: 0
.... .0.. = Constraint_set5_flag: 0
.... ..00 = Reserved_zero_2bits: 0
0000 1101 = Level_id: 13 [Level 1.3 768 kb/s]
1... .... = seq_parameter_set_id: 0
.001 00.. = log2_max_frame_num_minus4: 3
.... ..01 1... .... = pic_order_cnt_type: 2
.001 01.. = num_ref_frames: 4
.... ..1. = gaps_in_frame_num_value_allowed_flag: 1
.... ...0 10.. .... = pic_width_in_mbs_minus1: 1
..00 0001 0100 0... = pic_height_in_map_units_minus1: 39
.... .0.. = frame_mbs_only_flag: 0
.... ..0. = mb_adaptive_frame_field_flag: 0
.... ...1 = direct_8x8_inference_flag: 1
1... .... = frame_cropping_flag: 1
.1.. .... = frame_crop_left_offset: 0
..1. .... = frame_crop_left_offset: 0
...1 .... = frame_crop_top_offset: 0
.... 1... = frame_crop_bottom_offset: 0
.... .0.. = vui_parameters_present_flag: 0
.... ..1. = rbsp_stop_bit: 1
.... ...0 = rbsp_trailing_bits: 0PPS slice
1... .... = pic_parameter_set_id: 0
.1.. .... = seq_parameter_set_id: 0
..0. .... = entropy_coding_mode_flag: 0
...0 .... = pic_order_present_flag: 0
.... 1... = num_slice_groups_minus1: 0
.... .1.. = num_ref_idx_l0_active_minus1: 0
.... ..1. = num_ref_idx_l1_active_minus1: 0
.... ...0 = weighted_pred_flag: 0
00.. .... = weighted_bipred_idc: 0
..00 0010 110. .... = pic_init_qp_minus26(se(v)): 11
...1 .... = pic_init_qs_minus26: 0
.... 1... = chroma_qp_index_offset: 0
.... .1.. = deblocking_filter_control_present_flag: 1
.... ..0. = constrained_intra_pred_flag: 0
.... ...0 = redundant_pic_cnt_present_flag: 0
1... .... = rbsp_stop_bit: 1
.000 0000 = rbsp_trailing_bits: 0And SEI
x264 - core 152 r2851 ba24899 - 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=10 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
What could be my mistake ?
-
FFMPEG Audio and Image to MP4 - Image Does Not Display [duplicate]
31 décembre 2017, par Summer DeveloperThis question already has an answer here :
I am using FFMPEG to create an mp4 from variable audio and image inputs.
Each audio is paired with one image that should loop for the duration of the audio.
My command is thus :
ffmpeg -i "myAudioFile.mp3" -loop 1 -i /var/www/html/storage/assets/myImagefile.png -vcodec libx264 -shortest -preset fast -acodec aac -strict -2 "myVideoFile.mp4"
It seems to work, except in the resulting
.mp4
I have audio but no video (image).Thank you !
-
ffplay - Two videos (.mp4), one display screen and just a few seconds to display them together [closed]
1er juillet 2024, par Gabe MataI have two videos (.mp4), one display screen and just a few seconds to display them together.


I am able to displayed them together on a split screen via ffmpeg and then opening the output file. The problem is that it takes a long time (3 minutes).


Here is the Code : (first code)


ffmpeg -i _20180114094126_flightvideo_cam1.mp4 \
 -i _20180114094126_flightvideo_cam2.mp4 \
 -filter_complex " \
 [0:v]crop=1280:360:0:0[v0]; \
 [1:v]scale=1280:-1,crop=1280:360:0:0[v1];\
 [v0] [v1]vstack[v]" \
 -map [v] \
 -vcodec libx264 \
 -pix_fmt yuv420p \
 -preset ultrafast \
 6000screen_take1.mkv 



On the other hand, when using ffplay I am able to modify one video at the time and play it right away :


$ ffplay -i _20180114094126_flightvideo_cam1.mp4 -vf scale=425:-2 



How can I have the same outcome as the first code above, but display it on my screen right away(without waiting for the output file to be created, 3 minutes in this case) ?


Please let me know if this is not clear.