
Recherche avancée
Médias (16)
-
#7 Ambience
16 octobre 2011, par
Mis à jour : Juin 2015
Langue : English
Type : Audio
-
#6 Teaser Music
16 octobre 2011, par
Mis à jour : Février 2013
Langue : English
Type : Audio
-
#5 End Title
16 octobre 2011, par
Mis à jour : Février 2013
Langue : English
Type : Audio
-
#3 The Safest Place
16 octobre 2011, par
Mis à jour : Février 2013
Langue : English
Type : Audio
-
#4 Emo Creates
15 octobre 2011, par
Mis à jour : Février 2013
Langue : English
Type : Audio
-
#2 Typewriter Dance
15 octobre 2011, par
Mis à jour : Février 2013
Langue : English
Type : Audio
Autres articles (67)
-
MediaSPIP Player : problèmes potentiels
22 février 2011, parLe lecteur ne fonctionne pas sur Internet Explorer
Sur Internet Explorer (8 et 7 au moins), le plugin utilise le lecteur Flash flowplayer pour lire vidéos et son. Si le lecteur ne semble pas fonctionner, cela peut venir de la configuration du mod_deflate d’Apache.
Si dans la configuration de ce module Apache vous avez une ligne qui ressemble à la suivante, essayez de la supprimer ou de la commenter pour voir si le lecteur fonctionne correctement : /** * GeSHi (C) 2004 - 2007 Nigel McNie, (...) -
Demande de création d’un canal
12 mars 2010, parEn fonction de la configuration de la plateforme, l’utilisateur peu avoir à sa disposition deux méthodes différentes de demande de création de canal. La première est au moment de son inscription, la seconde, après son inscription en remplissant un formulaire de demande.
Les deux manières demandent les mêmes choses fonctionnent à peu près de la même manière, le futur utilisateur doit remplir une série de champ de formulaire permettant tout d’abord aux administrateurs d’avoir des informations quant à (...) -
Gestion de la ferme
2 mars 2010, parLa ferme est gérée dans son ensemble par des "super admins".
Certains réglages peuvent être fais afin de réguler les besoins des différents canaux.
Dans un premier temps il utilise le plugin "Gestion de mutualisation"
Sur d’autres sites (8867)
-
Converting `webm` to `mov` format using ffmpeg loses transparency - how can I keep it ?
10 mars 2023, par M.A ShahbaziI am trying to convert a
webm
video tomov
format without losing quality and transparency using the following command :

ffmpeg -c:v libvpx-vp9 -i input.webm ouput.mov



The video gets converted, but it loses transparency and the background of video is black.


I also tried the following command :


ffmpeg -c:v png -i input.webm output.mov



But it gives me the following error output :


libavutil 58. 3.100 / 58. 3.100
 libavcodec 60. 4.100 / 60. 4.100
 libavformat 60. 4.100 / 60. 4.100
 libavdevice 60. 2.100 / 60. 2.100
 libavfilter 9. 4.100 / 9. 4.100
 libswscale 7. 2.100 / 7. 2.100
 libswresample 4. 11.100 / 4. 11.100
 libpostproc 57. 2.100 / 57. 2.100
[png @ 0000028041ca7000] Invalid PNG signature 0x824983420031F031.
[matroska,webm @ 0000028041c91240] Could not find codec parameters for stream 0 (Video: png, none(pc, progressive), 800x800): unspecified pixel format
Consider increasing the value for the 'analyzeduration' (0) and 'probesize' (5000000) options
Input #0, matroska,webm, from 'hero.webm':
 Metadata:
 COMPATIBLE_BRANDS: qt
 creation_time : 2023-02-23T10:43:46.703800Z
 MAJOR_BRAND : qt
 MINOR_VERSION : 537199360
 ENCODER : Lavf59.35.100
 Duration: 00:00:09.00, start: 0.000000, bitrate: 1378 kb/s
 Stream #0:0: Video: png, none(pc, progressive), 800x800, SAR 1:1 DAR 1:1, 24 fps, 24 tbr, 1k tbn
 Metadata:
 alpha_mode : 1
 ENCODER : Lavc59.56.100 libvpx-vp9
 DURATION : 00:00:09.000000000
Stream mapping:
 Stream #0:0 -> #0:0 (png (native) -> h264 (libx264))
Press [q] to stop, [?] for help
[png @ 0000028041ca7680] Invalid PNG signature 0x824983420031F031.
Error while decoding stream #0:0: Invalid data found when processing input
Cannot determine format of input stream 0:0 after EOF
Error marking filters as finished
Conversion failed!



How can I maintain transparency when converting from
webm
tomov
format ?

Here's the video info in case it can be helpful :


{
 "streams": [
 {
 "index": 0,
 "codec_name": "vp9",
 "codec_long_name": "Google VP9",
 "profile": "Profile 0",
 "codec_type": "video",
 "codec_tag_string": "[0][0][0][0]",
 "codec_tag": "0x0000",
 "width": 800,
 "height": 800,
 "coded_width": 800,
 "coded_height": 800,
 "closed_captions": 0,
 "film_grain": 0,
 "has_b_frames": 0,
 "sample_aspect_ratio": "1:1",
 "display_aspect_ratio": "1:1",
 "pix_fmt": "yuv420p",
 "level": -99,
 "color_range": "tv",
 "field_order": "progressive",
 "refs": 1,
 "r_frame_rate": "24/1",
 "avg_frame_rate": "24/1",
 "time_base": "1/1000",
 "start_pts": 0,
 "start_time": "0.000000",
 "disposition": {
 "default": 0,
 "dub": 0,
 "original": 0,
 "comment": 0,
 "lyrics": 0,
 "karaoke": 0,
 "forced": 0,
 "hearing_impaired": 0,
 "visual_impaired": 0,
 "clean_effects": 0,
 "attached_pic": 0,
 "timed_thumbnails": 0,
 "captions": 0,
 "descriptions": 0,
 "metadata": 0,
 "dependent": 0,
 "still_image": 0
 },
 "tags": {
 "alpha_mode": "1",
 "ENCODER": "Lavc59.56.100 libvpx-vp9",
 "DURATION": "00:00:09.000000000"
 }
 }
 ],
 "format": {
 "filename": ".\\hero.webm",
 "nb_streams": 1,
 "nb_programs": 0,
 "format_name": "matroska,webm",
 "format_long_name": "Matroska / WebM",
 "start_time": "0.000000",
 "duration": "9.000000",
 "size": "1550466",
 "bit_rate": "1378192",
 "probe_score": 100,
 "tags": {
 "COMPATIBLE_BRANDS": "qt ",
 "creation_time": "2023-02-23T10:43:46.703800Z",
 "MAJOR_BRAND": "qt ",
 "MINOR_VERSION": "537199360",
 "ENCODER": "Lavf59.35.100"
 }
 }
}



-
Why is audio bitrate value of ffprobe output higher ?
9 mars 2023, par 19xlr95When I check audio bitrate of my video via OS file details, media players or
ffprobe -i my_video.mp4
, I get the bitrate is128 kbps
. And I want to get more detailed meta information of the video byffprobe -loglevel 0 -print_format json -show_format -show_streams my_video.mp4
. However audio bitrate value of the output is128615 bps
.

I thought it should be
128000
not128615
. Or128 x 1024 = 131072
. I wonder why it is not one of the values that I assumed. Also how can I safely say that this128615 bps
is128 kbps
?

Below is the detailed meta information for my video.


{
 "streams": [
 {
 "index": 0,
 "codec_name": "aac",
 "codec_long_name": "AAC (Advanced Audio Coding)",
 "profile": "LC",
 "codec_type": "audio",
 "codec_tag_string": "mp4a",
 "codec_tag": "0x6134706d",
 "sample_fmt": "fltp",
 "sample_rate": "48000",
 "channels": 2,
 "channel_layout": "stereo",
 "bits_per_sample": 0,
 "initial_padding": 0,
 "id": "0x1",
 "r_frame_rate": "0/0",
 "avg_frame_rate": "0/0",
 "time_base": "1/48000",
 "start_pts": 0,
 "start_time": "0.000000",
 "duration_ts": 965760,
 "duration": "20.120000",
 "bit_rate": "128615",
 "nb_frames": "946",
 "extradata_size": 2,
 "disposition": {
 "default": 1,
 "dub": 0,
 "original": 0,
 "comment": 0,
 "lyrics": 0,
 "karaoke": 0,
 "forced": 0,
 "hearing_impaired": 0,
 "visual_impaired": 0,
 "clean_effects": 0,
 "attached_pic": 0,
 "timed_thumbnails": 0,
 "captions": 0,
 "descriptions": 0,
 "metadata": 0,
 "dependent": 0,
 "still_image": 0
 },
 "tags": {
 "creation_time": "2023-02-20T09:00:58.000000Z",
 "language": "deu",
 "handler_name": "Core Media Audio",
 "vendor_id": "[0][0][0][0]"
 }
 },
 {
 "index": 1,
 "codec_name": "h264",
 "codec_long_name": "H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10",
 "profile": "High",
 "codec_type": "video",
 "codec_tag_string": "avc1",
 "codec_tag": "0x31637661",
 "width": 1080,
 "height": 1920,
 "coded_width": 1080,
 "coded_height": 1920,
 "closed_captions": 0,
 "film_grain": 0,
 "has_b_frames": 0,
 "sample_aspect_ratio": "1:1",
 "display_aspect_ratio": "9:16",
 "pix_fmt": "yuv420p",
 "level": 42,
 "color_range": "tv",
 "color_space": "bt709",
 "color_transfer": "bt709",
 "color_primaries": "bt709",
 "chroma_location": "left",
 "field_order": "progressive",
 "refs": 1,
 "is_avc": "true",
 "nal_length_size": "4",
 "id": "0x2",
 "r_frame_rate": "50/1",
 "avg_frame_rate": "50/1",
 "time_base": "1/50000",
 "start_pts": 0,
 "start_time": "0.000000",
 "duration_ts": 1006000,
 "duration": "20.120000",
 "bit_rate": "20958903",
 "bits_per_raw_sample": "8",
 "nb_frames": "1006",
 "extradata_size": 35,
 "disposition": {
 "default": 1,
 "dub": 0,
 "original": 0,
 "comment": 0,
 "lyrics": 0,
 "karaoke": 0,
 "forced": 0,
 "hearing_impaired": 0,
 "visual_impaired": 0,
 "clean_effects": 0,
 "attached_pic": 0,
 "timed_thumbnails": 0,
 "captions": 0,
 "descriptions": 0,
 "metadata": 0,
 "dependent": 0,
 "still_image": 0
 },
 "tags": {
 "creation_time": "2023-02-20T09:00:58.000000Z",
 "language": "und",
 "handler_name": "Core Media Video",
 "vendor_id": "[0][0][0][0]"
 }
 }
 ],
 "format": {
 "filename": "my_video.mp4",
 "nb_streams": 2,
 "nb_programs": 0,
 "format_name": "mov,mp4,m4a,3gp,3g2,mj2",
 "format_long_name": "QuickTime / MOV",
 "start_time": "0.000000",
 "duration": "20.120000",
 "size": "53309460",
 "bit_rate": "21196604",
 "probe_score": 100,
 "tags": {
 "major_brand": "mp42",
 "minor_version": "1",
 "compatible_brands": "isommp41mp42",
 "creation_time": "2023-02-20T09:00:58.000000Z"
 }
 }
}



I checked 1 kbps is 1000 bps and assumed 128 kbps of the audio bitrate should be 128000 bps. But it is 128615 bps when I run
ffprobe
.

-
Invalid frame dimension, invalid data found when processing input, muxing overhead : unknown when concatting old VOB files | FFMPEG
9 mars 2023, par Victor HartmanI am dealing with multiple errors which I am not able to resolve. I am trying to concat 4 old VOB files to a mp4. Using command (already solved a 'pts has no value error') :


.\ffmpeg.exe -fflags +genpts -f concat -i .\files.txt -c copy output.mp4



files.txt looks like this :


file 'VTS_01_1.VOB'
file 'VTS_01_2.VOB'
file 'VTS_01_3.VOB'
file 'VTS_01_4.VOB'



Output looks like this :


ffmpeg version 2023-03-05-git-912ac82a3c-essentials_build-www.gyan.dev Copyright (c) 2000-2023 the FFmpeg developers
 built with gcc 12.2.0 (Rev10, Built by MSYS2 project)
 configuration: --enable-gpl --enable-version3 --enable-static --disable-w32threads --disable-autodetect --enable-fontconfig --enable-iconv --enable-gnutls --enable-libxml2 --enable-gmp --enable-bzlib --enable-lzma --enable-zlib --enable-libsrt --enable-libssh --enable-libzmq --enable-avisynth --enable-sdl2 --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxvid --enable-libaom --enable-libopenjpeg --enable-libvpx --enable-mediafoundation --enable-libass --enable-libfreetype --enable-libfribidi --enable-libvidstab --enable-libvmaf --enable-libzimg --enable-amf --enable-cuda-llvm --enable-cuvid --enable-ffnvcodec --enable-nvdec --enable-nvenc --enable-d3d11va --enable-dxva2 --enable-libvpl --enable-libgme --enable-libopenmpt --enable-libopencore-amrwb --enable-libmp3lame --enable-libtheora --enable-libvo-amrwbenc --enable-libgsm --enable-libopencore-amrnb --enable-libopus --enable-libspeex --enable-libvorbis --enable-librubberband
 libavutil 58. 3.100 / 58. 3.100
 libavcodec 60. 6.100 / 60. 6.100
 libavformat 60. 4.100 / 60. 4.100
 libavdevice 60. 2.100 / 60. 2.100
 libavfilter 9. 4.100 / 9. 4.100
 libswscale 7. 2.100 / 7. 2.100
 libswresample 4. 11.100 / 4. 11.100
 libpostproc 57. 2.100 / 57. 2.100
Input #0, concat, from '.\files.txt':
 Duration: N/A, start: 0.000000, bitrate: N/A
 Stream #0:0: Data: dvd_nav_packet
 Stream #0:1: Video: mpeg2video (Main), yuv420p(tv, top first), 720x480 [SAR 8:9 DAR 4:3], 29.97 fps, 29.97 tbr, 90k tbn
 Side data:
 cpb: bitrate max/min/avg: 7000000/0/0 buffer size: 1835008 vbv_delay: N/A
 Stream #0:2: Audio: ac3, 48000 Hz, stereo, fltp, 448 kb/s
File 'output.mp4' already exists. Overwrite? [y/N] y
[mp4 @ 00000211b44d0900] track 1: codec frame size is not set
Output #0, mp4, to 'output.mp4':
 Metadata:
 encoder : Lavf60.4.100
 Stream #0:0: Video: mpeg2video (Main) (mp4v / 0x7634706D), yuv420p(tv, top first), 720x480 [SAR 8:9 DAR 4:3], q=2-31, 29.97 fps, 29.97 tbr, 90k tbn
 Side data:
 cpb: bitrate max/min/avg: 7000000/0/0 buffer size: 1835008 vbv_delay: N/A
 Stream #0:1: Audio: ac3 (ac-3 / 0x332D6361), 48000 Hz, stereo, fltp, 448 kb/s
Stream mapping:
 Stream #0:1 -> #0:0 (copy)
 Stream #0:2 -> #0:1 (copy)
Press [q] to stop, [?] for help
[mpeg2video @ 00000211b44a5f00] Invalid frame dimensions 0x0. bitrate=5521.6kbits/s speed= 643x
 Last message repeated 3 times
[concat @ 00000211b449b500] DTS 137507370 < 137525388 out of order
[mp4 @ 00000211b44d0900] Non-monotonous DTS in output stream 0:0; previous: 137525388, current: 137507370; changing to 137525389. This may result in incorrect timestamps in the output file.
[mp4 @ 00000211b44d0900] Non-monotonous DTS in output stream 0:0; previous: 137525389, current: 137510250; changing to 137525390. This may result in incorrect timestamps in the output file.
[mp4 @ 00000211b44d0900] Non-monotonous DTS in output stream 0:0; previous: 137525390, current: 137510250; changing to 137525391. This may result in incorrect timestamps in the output file.
[mp4 @ 00000211b44d0900] Non-monotonous DTS in output stream 0:0; previous: 137525391, current: 137513130; changing to 137525392. This may result in incorrect timestamps in the output file.
[mp4 @ 00000211b44d0900] Non-monotonous DTS in output stream 0:0; previous: 137525392, current: 137516010; changing to 137525393. This may result in incorrect timestamps in the output file.
[mp4 @ 00000211b44d0900] Non-monotonous DTS in output stream 0:0; previous: 137525393, current: 137518890; changing to 137525394. This may result in incorrect timestamps in the output file.
[mp4 @ 00000211b44d0900] Non-monotonous DTS in output stream 0:0; previous: 137525394, current: 137521770; changing to 137525395. This may result in incorrect timestamps in the output file.
[mp4 @ 00000211b44d0900] Non-monotonous DTS in output stream 0:0; previous: 137525395, current: 137524650; changing to 137525396. This may result in incorrect timestamps in the output file.
av_interleaved_write_frame(): Invalid data found when processing input
[out#0/mp4 @ 00000211b44f96c0] Error muxing a packet
[out#0/mp4 @ 00000211b44f96c0] Error writing trailer: Invalid data found when processing input
frame=45815 fps=19808 q=-1.0 Lsize= 1027328kB time=00:25:29.51 bitrate=5502.3kbits/s speed= 661x
video:943791kB audio:83556kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
Conversion failed!