Lightworks: The professional editor for everyone - Forum Kunena Site Syndication https://www.lwks.com/ Fri, 19 Jul 2019 02:57:11 +0000 Kunena 1.6 components/com_kunena/template/default/images/icons/rss.png Lightworks: The professional editor for everyone - Forum en-gb Video Export Playback slow. - by: frsoty https://www.lwks.com/index.php?option=com_kunena&func=view&catid=23&id=201704&Itemid=81#201704 https://www.lwks.com/index.php?option=com_kunena&func=view&catid=23&id=201704&Itemid=81#201704
Using the latest version of Lightworks on Mac (14.5). First time using software.

Editing videos whilst on the timeline, the playback is fine and is very responsive.

Exporting the video successfully completes without any issue. I can see it rendering.
However, when exporting to YouTube or Vimeo format, the playback is about ~75%...

Is there a something I am doing wrong or a setting I have made to cause this.]]>
Codecs / Importing / Exporting / Transcoding Tue, 16 Jul 2019 23:22:30 +0000
não consigo importar vide-o para timeline - by: ederock31 https://www.lwks.com/index.php?option=com_kunena&func=view&catid=23&id=201418&Itemid=81#201418 https://www.lwks.com/index.php?option=com_kunena&func=view&catid=23&id=201418&Itemid=81#201418
NÃO FOI POSSÍVEL INICIAR - NÃO EXISTEM UNIDADES DE MATÉRIAS LIGADOS AO SISTEMA

alguém sabe oq pode ser ?

[attachment:1]erro.bmp[/attachment]]]>
Codecs / Importing / Exporting / Transcoding Thu, 11 Jul 2019 00:22:59 +0000
Preparing an external grade - by: Bertbear https://www.lwks.com/index.php?option=com_kunena&func=view&catid=23&id=201293&limit=15&limitstart=15&Itemid=81#201293 https://www.lwks.com/index.php?option=com_kunena&func=view&catid=23&id=201293&limit=15&limitstart=15&Itemid=81#201293
I'm starting a big project that will enjoy an external sound mix and grade when the time comes. Out puting an OMF for the sound mix I can handle but I'm not sure how to prepare an output for an external color grade. Can anyone start me off here?

Thanks
Bert]]>
Codecs / Importing / Exporting / Transcoding Tue, 09 Jul 2019 07:43:22 +0000
help :( - by: addri https://www.lwks.com/index.php?option=com_kunena&func=view&catid=23&id=201292&Itemid=81#201292 https://www.lwks.com/index.php?option=com_kunena&func=view&catid=23&id=201292&Itemid=81#201292 please anyone help me ]]> Codecs / Importing / Exporting / Transcoding Tue, 09 Jul 2019 07:39:02 +0000 Audio and video out of sync at export of MP4 - by: Fingersail https://www.lwks.com/index.php?option=com_kunena&func=view&catid=23&id=201156&Itemid=81#201156 https://www.lwks.com/index.php?option=com_kunena&func=view&catid=23&id=201156&Itemid=81#201156 I have managed to sync video (from digital camera) with audio (from separate digital recorder - for parts of the video there was a fault on the mixing desk supplying both so the camera had no audio signal). In LW editor all is perfectly in sync but when exported to MP4, all out of sync.
Details from MediaInfo are:
Non-camera audio source is

Format : Wave
File size : 44.9 MiB
Duration : 8 min 10 s
Overall bit rate mode : Constant
Overall bit rate : 768 kb/s
Track name : BM speech
Track name/Position : 10
ITRK : 10

Audio
Format : PCM
Format settings : Little / Signed
Codec ID : 1
Duration : 8 min 10 s
Bit rate mode : Constant
Bit rate : 768 kb/s
Channel(s) : 1 channel
Sampling rate : 48.0 kHz
Bit depth : 16 bits
Stream size : 44.9 MiB (100%)

Camera video source is:
Duration : 26 s 40 ms
Overall bit rate : 30.0 Mb/s

Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4.1
Format settings : CABAC / 2 Ref Frames
Format settings, CABAC : Yes
Format settings, Reference frames : 2 frames
Format settings, GOP : M=3, N=12
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 26 s 40 ms
Bit rate : 29.7 Mb/s
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 25.000 FPS
Standard : Component
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.573
Stream size : 92.1 MiB (99%)
Language : English
Encoded date : UTC 2019-06-22 16:02:45
Tagged date : UTC 2019-06-22 16:02:45
Color range : Full
Color primaries : BT.709
Transfer characteristics : BT.709
Matrix coefficients : BT.709
Codec configuration box : avcC

(for comparison, camera audio source looks like this, but note this is not available for most of the video recording):
Audio
ID : 2
Format : AAC LC
Format/Info : Advanced Audio Codec Low Complexity
Codec ID : mp4a-40-2
Duration : 26 s 27 ms
Bit rate mode : Constant
Bit rate : 256 kb/s
Channel(s) : 2 channels
Channel layout : L R
Sampling rate : 48.0 kHz
Frame rate : 46.875 FPS (1024 SPF)
Compression mode : Lossy
Stream size : 810 KiB (1%)

Things I have tried:
Upgraded to the paid version of LW for a month and tried exporting as WMV. It wouldn't export in this format.

Thanks for looking through; any suggestions appreciated.]]>
Codecs / Importing / Exporting / Transcoding Sat, 06 Jul 2019 05:19:07 +0000
No video after exporting. - by: TheKarlossos https://www.lwks.com/index.php?option=com_kunena&func=view&catid=23&id=201094&Itemid=81#201094 https://www.lwks.com/index.php?option=com_kunena&func=view&catid=23&id=201094&Itemid=81#201094
Basically I've tried exporting this video a few times and it comes up with my title (just on a dissolve at the start) but when the dissolve is supposed to reveal my footage there's nothing in the video, it just stays black.

On the sequence in LWKS it works perfectly, it's only on export that it doesn't work properly.]]>
Codecs / Importing / Exporting / Transcoding Thu, 04 Jul 2019 20:08:38 +0000
Material Issue: Replaced with Black - by: Hypocrism https://www.lwks.com/index.php?option=com_kunena&func=view&catid=23&id=201092&Itemid=81#201092 https://www.lwks.com/index.php?option=com_kunena&func=view&catid=23&id=201092&Itemid=81#201092
My source video is a framelapse exported by a phone app as an mp4 video. During editing there is no issue with displaying the content. However when exporting, I get innumerable error messages saying "Material Error at (time): replaced with black". Then, when the video is exported, there are very frequent missed frames that are black, and to my eye it looks like the framelapse is playing at variable speed.
This only happens when this video is in the export, not for the remainder of the video which has no missed frames.

I have noticed two previous threads about this and wonder if anybody could help me work out what is the issue with my file?

The file is at 24fps as is the project.

This is the MediaInfo output:

General
Complete name : C:\Users\Jon\Documents\Board Games\Mars Footage\Momentum\momentum 1.mp4
Format : MPEG-4
Format profile : Base Media
Codec ID : isom (isom/iso2/mp41)
File size : 609 MiB
Duration : 8 min 30 s
Overall bit rate mode : Variable
Overall bit rate : 10.0 Mb/s
Encoded date : UTC 1970-01-01 00:00:00
Tagged date : UTC 1970-01-01 00:00:00
Writing application : Lavf52.64.2

Video
ID : 1
Format : MPEG-4 Visual
Format profile : Simple@L1
Format settings, BVOP : No
Format settings, QPel : No
Format settings, GMC : No warppoints
Format settings, Matrix : Default (H.263)
Codec ID : mp4v-20
Duration : 8 min 30 s
Bit rate mode : Variable
Bit rate : 10.0 Mb/s
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 24.000 FPS
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Compression mode : Lossy
Bits/(Pixel*Frame) : 0.201
Stream size : 609 MiB (100%)
Writing library : Lavc52.72.2
Encoded date : UTC 1970-01-01 00:00:00
Tagged date : UTC 1970-01-01 00:00:00

Thanks for your help!]]>
Codecs / Importing / Exporting / Transcoding Thu, 04 Jul 2019 19:48:29 +0000
Timing how long creating (rendering) the video take - by: Evets90 https://www.lwks.com/index.php?option=com_kunena&func=view&catid=23&id=200788&Itemid=81#200788 https://www.lwks.com/index.php?option=com_kunena&func=view&catid=23&id=200788&Itemid=81#200788
first of all I am not familiar with this forum so I apologize if my post is in the wrong section and feel free to move it in the proper one. Done. No apolgy necessary - jwrl.

I am interested in a very quick and specific question: is there some kind of log for the rendering (export) of the video which can show me how long it took? I looked but could not find any.

Thanks]]>
Codecs / Importing / Exporting / Transcoding Mon, 01 Jul 2019 09:00:44 +0000
Disappearing Clips after closing and reopening Lightworks - by: LactheWatcher https://www.lwks.com/index.php?option=com_kunena&func=view&catid=23&id=200750&Itemid=81#200750 https://www.lwks.com/index.php?option=com_kunena&func=view&catid=23&id=200750&Itemid=81#200750
I'm using 14.5 and was wondering if anyone else is having this issue and if there is a solution, like are my settings wrong? I've set it to "mixed rates" for framerates or are their certain file types that don't stay in LW? Or am I importing them improperly? I thought maybe I need to click and drag them into the log tab as maybe importing them on another tab confuses the app or something? Or am I using too many clips in the log?

Either way, I hope someone can help me,

Thank you]]>
Codecs / Importing / Exporting / Transcoding Sun, 30 Jun 2019 17:47:34 +0000
what is your favorite proxy codec? - by: kalimerox https://www.lwks.com/index.php?option=com_kunena&func=view&catid=23&id=200692&Itemid=81#200692 https://www.lwks.com/index.php?option=com_kunena&func=view&catid=23&id=200692&Itemid=81#200692
I was wondering: what is your "fastest" proxy editing codec with 720p?

should the avc-intra theoretically be the codec with low cpu usage (and probably bigger files..)?]]>
Codecs / Importing / Exporting / Transcoding Sat, 29 Jun 2019 16:34:49 +0000