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Autres articles (39)
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Les autorisations surchargées par les plugins
27 avril 2010, parMediaspip core
autoriser_auteur_modifier() afin que les visiteurs soient capables de modifier leurs informations sur la page d’auteurs -
Support de tous types de médias
10 avril 2011Contrairement à beaucoup de logiciels et autres plate-formes modernes de partage de documents, MediaSPIP a l’ambition de gérer un maximum de formats de documents différents qu’ils soient de type : images (png, gif, jpg, bmp et autres...) ; audio (MP3, Ogg, Wav et autres...) ; vidéo (Avi, MP4, Ogv, mpg, mov, wmv et autres...) ; contenu textuel, code ou autres (open office, microsoft office (tableur, présentation), web (html, css), LaTeX, Google Earth) (...)
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Supporting all media types
13 avril 2011, parUnlike most software and media-sharing platforms, MediaSPIP aims to manage as many different media types as possible. The following are just a few examples from an ever-expanding list of supported formats : images : png, gif, jpg, bmp and more audio : MP3, Ogg, Wav and more video : AVI, MP4, OGV, mpg, mov, wmv and more text, code and other data : OpenOffice, Microsoft Office (Word, PowerPoint, Excel), web (html, CSS), LaTeX, Google Earth and (...)
Sur d’autres sites (6521)
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FFMPEG Generate video clips and concatenate them all
8 février 2020, par lms702I have a bunch of images (.png) and audio files (.wav) that I want to combine and concatenate. For example, if I have a1.wav, i1.png, a2.wav, and i2.png, I want to output a video that is a1.wav overlayed onto i1.png, then (concatenated to a2.wav overlayed onto i2.png.
Currently, my approach is to save each individual clip and then concatenate them all at the end.
To save each clip, I use this command (in a loop for all of my clips) :
ffmpeg -i {imageFile} -i {audioFile} -nostdin -qscale:v 1 -vcodec libx264 -pix_fmt yuv420p {outputFile.mp4}``
It outputs an mp4 that kind of works - the playback is really buggy but works in full screen.
My current approach to concatenating has not been at all successful. I create a list of the clip names and put it into filename then call this command :
ffmpeg -f concat -i {filename} -c copy clips/finalOutput.mp4
This outputs a pretty jumbled video and this error repeated :
[mp4 @ 000001cdec110740] Non-monotonous DTS in output stream 0:1; previous: 1045041, current: 604571; changing to 1045042. This may result in incorrect timestamps in the output file.
So, a few questions.
What is the best way to go about this process ?
Should I be saving each clip or is there a better way to do it all in one command ?
If I do save each clip, is there a better file format I should use ?
Plz help with the concatenation command.
Also note that because I am automating this with python I can build arbitrarily large commands, though that might not be ideal.
I am very new to this and I would really appreciate any help !
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Metadata disappears when hevc_nvenc is used in ffmpeg (Estimated to be overwrite with null value.)
30 janvier 2020, par Dashhhdisappear metadata using at heve_nvenc
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When using h264_cuvid and hevc_nvenc through ffmpeg on my server, the metadata of the files that come out of the encoding output is lost.
There was no such thing in h264_nvenc. Also, the libx265 encoding result has metadata. -
The ffmpeg command I used is as follows.
ffmpeg -v debug -vsync 0 -hwaccel cuvid -hwaccel_device 2 -c:v h264_cuvid \
-i ./intputfile.mp4 -map_metadata 0 -map_metadata 0:s:0 -map_metadata:s:v 0:s:v -map_metadata:s:a 0:s:a \
-map 0:v -vf hwdownload,format=nv12,format=yuv420p,scale=iw*2:ih*2 \
-c:v nvenc_hevc -preset slow -rc vbr_hq -pix_fmt yuv420p -b:v 5M -maxrate:v 8M -gpu 2 \
-map 0:a -c:a copy \
-color_range tv -colorspace bt709 -color_trc bt709 -color_primaries bt709 \
hevc_output_test.mp4- Refer to the image below for property information on the generated file.
- In the image in the link, the left pane is a playable h264_nvenc encoding deliverable file.
- In the image in the link, the right pane is a non-replayable hevc_nvenc encoding deliverable
file.- Program available for play : VLC
- Unable to play : Ubuntu 18.04 Base Video Player, Samsung Smart TV (h264_nvenc and libx265 encoded deliverables files can be played).
- Please refer to the image below for an error message displayed in the Player when it is not possible to play. (This is the default video player for ubuntu 18.04.)
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I added ‘-f matroska’ option to the command written above and made a result.(The result file extension has also been changed to "mkv")
Unusually, metadata exists in the process in which images are made as follows :
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However, at the end of encoding, this metadata disappears again. (It looks exactly like the first image in the right pane.)
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The path to which this information was obtained was identified by right-clicking the file in Ubuntu (18.04) to the category "Properties" - "video/audio".
Can you tell me why this is happening ?
If not, please advise me where I should look.
CUDA : 10.2
Video SDK Version (Nvenc version) : 9.1
GPU : GeForce GTX 1080 Ti
Driver Version : 440.33.01
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FFmpeg, MPEG4 video rotate and Windows
25 décembre 2017, par user3768884I have this kind of video recorded in some Samsung Galaxy phone (info from : "ffprobe -v error -show_format -show_streams filename.mp4")
[STREAM]
index=0
codec_name=h264
codec_long_name=H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10
profile=High
codec_type=video
codec_time_base=7048499/423000000
codec_tag_string=avc1
codec_tag=0x31637661
width=1920
height=1080
coded_width=1920
coded_height=1080
has_b_frames=0
sample_aspect_ratio=0:1
display_aspect_ratio=0:1
pix_fmt=yuv420p
level=40
color_range=unknown
color_space=unknown
color_transfer=unknown
color_primaries=unknown
chroma_location=left
field_order=unknown
timecode=N/A
refs=1
is_avc=true
nal_length_size=4
id=N/A
r_frame_rate=30/1
avg_frame_rate=211500000/7048499
time_base=1/90000
start_pts=0
start_time=0.000000
duration_ts=7048499
duration=78.316656
bit_rate=17010472
max_bit_rate=N/A
bits_per_raw_sample=8
nb_frames=2350
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
DISPOSITION:timed_thumbnails=0
TAG:rotate=90
TAG:creation_time=2017-12-17T13:42:14.000000Z
TAG:language=eng
TAG:handler_name=VideoHandle
[SIDE_DATA]
side_data_type=Display Matrix
displaymatrix=
00000000: 0 65536 0
00000001: -65536 0 0
00000002: 0 0 1073741824
rotation=-90
[/SIDE_DATA]
[/STREAM]
[STREAM]
index=1
codec_name=aac
codec_long_name=AAC (Advanced Audio Coding)
profile=LC
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=3772416
duration=78.592000
bit_rate=126154
max_bit_rate=128000
bits_per_raw_sample=N/A
nb_frames=3684
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
DISPOSITION:timed_thumbnails=0
TAG:creation_time=2017-12-17T13:42:14.000000Z
TAG:language=eng
TAG:handler_name=SoundHandle
[/STREAM]
[FORMAT]
filename=original_galaxy.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=78.592000
size=167808936
bit_rate=17081528
probe_score=100
TAG:major_brand=isom
TAG:minor_version=0
TAG:compatible_brands=isom3gp4
TAG:creation_time=2017-12-17T13:42:14.000000Z
[/FORMAT]Since all my media players does not support rotate-knowledge, I have turned the video over again, and at the same time slightly decreased the resolution of command "ffmpeg -i "input.mp4" -vf "scale=720:1280,transpose=0,transpose=0" -c:a copy "output.mp4""
[STREAM]
index=0
codec_name=h264
codec_long_name=H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10
profile=High
codec_type=video
codec_time_base=1/60
codec_tag_string=avc1
codec_tag=0x31637661
width=720
height=1280
coded_width=720
coded_height=1280
has_b_frames=2
sample_aspect_ratio=0:1
display_aspect_ratio=0:1
pix_fmt=yuv420p
level=31
color_range=unknown
color_space=unknown
color_transfer=unknown
color_primaries=unknown
chroma_location=left
field_order=unknown
timecode=N/A
refs=1
is_avc=true
nal_length_size=4
id=N/A
r_frame_rate=30/1
avg_frame_rate=30/1
time_base=1/15360
start_pts=0
start_time=0.000000
duration_ts=1203717
duration=78.366992
bit_rate=2570692
max_bit_rate=N/A
bits_per_raw_sample=8
nb_frames=2351
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
DISPOSITION:timed_thumbnails=0
TAG:language=eng
TAG:handler_name=VideoHandler
[/STREAM]
[STREAM]
index=1
codec_name=aac
codec_long_name=AAC (Advanced Audio Coding)
profile=LC
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=3772416
duration=78.592000
bit_rate=126154
max_bit_rate=126154
bits_per_raw_sample=N/A
nb_frames=3684
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
DISPOSITION:timed_thumbnails=0
TAG:language=eng
TAG:handler_name=SoundHandler
[/STREAM]
[FORMAT]
filename=from_ffmpeg.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=78.592000
size=26503544
bit_rate=2697836
probe_score=100
TAG:major_brand=isom
TAG:minor_version=512
TAG:compatible_brands=isomiso2avc1mp41
TAG:encoder=Lavf57.41.100
[/FORMAT]This works very well in VLC, for example. However, Windows Media Player or Samsung TV does not play it. Windows Explorer does not even show a video thumbnail, so the video file is broken by Windows.
Is not FFmpeg able to produce a standard MPEG4 file, or what the hell is this about ? I’ve tried all the alternatives presented, such as "-fflags +genpts", "-fflags genpts", "-movflags faststart", "-movflags +faststart", "pix_fmt=yuv420p" etc. but nothing worked.
The sound I copied directly.