Lightworks: The professional editor for everyone - Forum Kunena Site Syndication Mon, 01 Sep 2014 23:24:43 +0000 Kunena 1.6 Lightworks: The professional editor for everyone - Forum en-gb Downsizing export file - by: lvr123
I just released my first little video using Lightworks Free.
However the size of exported file could be smaller (at least this is what I think, because using VLC I reduced the size to 2/3 of the LW export).

Are there features in LW PRO that could export this film with a smaller size (but without too much compromise on its quality) ?

Complete name : N:\Martin&co-La Joconde\export\LaJoconde-v2.mp4
Format : MPEG-4
Format profile : Base Media / Version 2
Codec ID : mp42
File size : 74.0 MiB
Duration : 1mn 55s
Overall bit rate mode : Variable
Overall bit rate : 5 363 Kbps
Encoded date : UTC 2014-08-31 09:27:49
Tagged date : UTC 2014-08-31 09:27:49

ID : 2
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4.1
Format settings, CABAC : Yes
Format settings, ReFrames : 3 frames
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 1mn 55s
Bit rate mode : Variable
Bit rate : 5 203 Kbps
Maximum bit rate : 8 000 Kbps
Width : 1 280 pixels
Height : 720 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 25.000 fps
Standard : PAL
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.226
Stream size : 71.8 MiB (97%)
Language : English
Encoded date : UTC 2014-08-31 09:27:50
Tagged date : UTC 2014-08-31 09:27:50
Color primaries : BT.709
Transfer characteristics : BT.709
Matrix coefficients : BT.709

ID : 1
Format : AAC
Format/Info : Advanced Audio Codec

Thanks in advance,]]>
Codecs / Importing / Exporting / Transcoding Sun, 31 Aug 2014 09:49:52 +0000
ProRes Exporting Mater Edit - by: MJMoon
Many thanks.]]>
Codecs / Importing / Exporting / Transcoding Sat, 30 Aug 2014 15:15:51 +0000
lwksProxyEditing tool. Is a tool compareable to eyeframeconverter, but this is for linux. - by: spjoe
The tool consists of three commands:

If you give as argument one ore more directories the tool check all files in the directory and if a file has a mimetype with video/* than it gets converted.

Changes all video symlinks in the given directory to Proxy video file.

Changes all video symlinks in the given directory to High quality video.

You can find the current version here:

PS: There will be bugs ]]>
Codecs / Importing / Exporting / Transcoding Fri, 29 Aug 2014 11:25:05 +0000
What H.264 export options in Lightworks Pro? - by: MuseX86 My video (720p @ 30 fps) will be uploaded to Vimeo so I need bitrate control, Closed GOP, CABAC etc.

Also, I just thought I'd let others know who are thinking of trying the free version of Lightworks, there is only ONE video format available "Web/Youtube", which this page shows:
but it doesn't say that there are only TWO export options, Frame rate: 30, 29.97,60 or 59.94 fps and video size(which it does list)240p, 360p, 480p and 720p.) You can't control bit rates, GOP or CABAC.

Codecs / Importing / Exporting / Transcoding Fri, 29 Aug 2014 00:25:38 +0000
Can't import Avid DnxHD movies - by: surendra_kamath
We have recently entitled with pro licenses. We are not able to import Avi DnxHD movs in to lighworks 11.5.2 (Windows 7 Platform). We have tried in both 32bit and 64 bit LWS. We were able to import the DnxHD codec videos in Free version of LWS.

Is anybody is having the same issue ? or is any fix available for this issue.

Best, Surendra]]>
Codecs / Importing / Exporting / Transcoding Thu, 28 Aug 2014 10:44:30 +0000
Can't import avi - by: robando Trying to get started with lightworks but i can't even import a video with avi format.
I get the erreor message "unable to import /blah/blah/" "failed"

Can anyone give me some tips on importing avi files please?]]>
Codecs / Importing / Exporting / Transcoding Thu, 28 Aug 2014 08:17:13 +0000
Importing file - by: gino1975
I have two problems:

1) When I try to import an avi file (Xvid), the program says me "unable to import the file";
2) When I try to import a video file that I recorded with my camera, the video is a bit 'grainy, and the sound seems corrupted.

P.S.: I had install the Deb package with Qdebi with the Shell.]]>
Codecs / Importing / Exporting / Transcoding Wed, 27 Aug 2014 19:29:05 +0000
No Audio on Blu-Ray render - by: georgebeker
What gives? What am I doing wrong? The audio is obviously there in the original . . .

Thanks in advance!

Codecs / Importing / Exporting / Transcoding Wed, 27 Aug 2014 16:58:08 +0000
Imported MPEG files get upscaled (with right side green bar) on export to MP4 - by: TMatthias
I'm very new to Lightworks, but not to video/audio editing in general, but it's been awhile so maybe I'm forgetting something obvious.

Anyway, I'm currently testing the free version of Lightworks to do some very basic edits at work. Among other things, I need Lightworks to import some very low resolution (352 x 240) .mpeg files, cut chunks out, and export to either .mp4 or back to .mpeg. With the free version, since I can only output to the YouTube format (.mp4), maybe this is impossible, but so far exporting back to 240p results in the video being "upscaled" to 426 x 240. When I open the .mp4 video in VLC, a green bar appears on the right hand side, and quality seems to have degraded even though VLC reports a higher bit-rate than the original video.

Also, upscaling the video on purpose (to 480p for example) gets rid of the green bar, but I feel like this isn't really a solid solution.

Is there a way for me to fine tune the export settings? Is this a Pro only feature? Does Pro allow me to keep the .mpeg format?

Thanks in advance for any help, it would be great to get this sorted out!]]>
Codecs / Importing / Exporting / Transcoding Tue, 26 Aug 2014 22:51:55 +0000
Export via Apple SDK - by: MuseX86
Windows 64-bit:
There is no QuickTime Movie / MPEG4 import / export via Apple SDK

Export Formats:
NOTE: Only YouTube and Lightworks Archive export options are supported in Lightworks Free.
A Lightworks Pro license is required to use other export options, this can be purchased from the Lightworks Shop (

Yet this page says it can export H.264 and MPEG-4(720P only for free version)

What is an "Archive export option"? What exactly does this all mean? Can Lightworks (free or Pro) export H.264?]]>
Codecs / Importing / Exporting / Transcoding Tue, 26 Aug 2014 18:26:46 +0000
Audio Too Fast in Edit - by: Blenderite
If I put it in a edit, it speed up, to about double the speed it should be. I am converting the audio from mp3 to wav with audacity, which doesn't give me any options for exporting wav.

The part that confuses me is that it previews fine, but in the edit it gets screwed up.]]>
Codecs / Importing / Exporting / Transcoding Mon, 25 Aug 2014 23:55:47 +0000
Nothing is importing - by: FreyaN I'm kind of new to Lightworks but got the basics from the video tutorials and everything was going fine. I imported some videos and began editing but now I'm trying to import more videos (from the same camera) and the transient "import" bin appears but there's nothing in it. Sometimes it imports but most of the videos have a black bookmark on them and when I click on them it says "media offline". And sometimes only one or two of the twenty or so videos import.

I've now tried to import some music and that's done the same thing.

Does anyone know how I can solve this?
Thanks ]]>
Codecs / Importing / Exporting / Transcoding Mon, 25 Aug 2014 15:20:30 +0000
Clips jump back to cut in exported files, different types of source file. - by: JBDavidB
I could not find any satisfactory explanation and/or workaround for a problem we are encountering when exporting an edit from lightworks.
This might also be due to the fact that is seems rather hard for us to accurately describe the actual problem, also possibly due to lack of knowledge of appropriate vocabulary…we are not video format geeks.

Here are the facts. We created several edits using lightworks. All these edits consist of two different types of source files:
1. videos in an MXF format we recorded with a Panasonic video camera and
2. stuff we recored using screen capture on a tablet PC, which is in an MP4 format/container.
In our edits there are many cuts from the MXF to the MP4 parts and vice versa.
Now inside lightworks everything is just fine, the edits play as they should.
As soon as we export an edit the following happens:
every time there is a cut to the material recorded (on the tablet PC) in MP4 this material starts to play normally, then jumps back to the beginning and plays again at a higher speed, then jumps again and so on.
Somewhere we read that a solution would be to add something like an "empty effect" in the MP4 parts, but we can't find that advice/thread anymore. With several hundred cuts in the entire project, however, manually inserting all these effect does not seem like a good option.
What are we doing wrong? Is there an easy solution to our problem. After all lightworks should be able to handle different types of source files, we think.]]>
Codecs / Importing / Exporting / Transcoding Mon, 25 Aug 2014 08:30:30 +0000
Imported Video File's Sides Cut Off - by: Tufst1.1 Codecs / Importing / Exporting / Transcoding Sat, 23 Aug 2014 21:08:32 +0000 PC screen capture from Magewell XI100XE - by: MuseX86

Codecs / Importing / Exporting / Transcoding Sat, 23 Aug 2014 00:13:35 +0000
Export -video &audio not sync - by: Mangan62 Codecs / Importing / Exporting / Transcoding Fri, 22 Aug 2014 19:56:35 +0000 MP4 file stuttering every 8~9 seconds on LWKS playback. - by: Iskifi
The video is recorded directly from the computer, using another software, Open Broadcaster Software v0.625b 64 bit version.

It's a MP4 file, here is the Media Info provided by EyeFrame Converter 1.8.1:


I have tried the conversion by using EyeFrame Converter. The format for editing I used was Mpeg2 I-Frame HD - Proxy Quarter Size, and for delivery I used H264 MP4 Profile Baseline. Still, the same problem persisted.

Playback outside of LWKS is fine.

If anyone has a clue, please, let me know

Thank you all.]]>
Codecs / Importing / Exporting / Transcoding Thu, 21 Aug 2014 23:01:15 +0000
[SOLVED] export MXF with embedded audio - can't get it right - by: LWSdoobre just trying to export to MXF with embedded audio but I always end up with seperate audio files even though the "embedded" is ticked..
blahblah.a1.mxf & blahblah.a2.mxf etc..

my source files are AVC which have been upped to prores422hq for the edit with seperate PCM audio tracks...

I would really like everything in one MXF file... really..
BTW is there a free MXF muxer..?

Codecs / Importing / Exporting / Transcoding Thu, 21 Aug 2014 14:54:01 +0000
MP4 video files are importing as just audio files - by: Vientus Codecs / Importing / Exporting / Transcoding Thu, 21 Aug 2014 02:01:14 +0000 cannot upload to youtube? - by: andrewhurrell I am trying to use the export to upload to youtube. Every time i get the message that the "username password is invalid".

So i logged out of youtube and succesfully logged back in again using the exact username and password that i was trying in Lightworks.

When trying Lightworks again was told "username password is invalid".
Any ideas ???]]>
Codecs / Importing / Exporting / Transcoding Wed, 20 Aug 2014 15:35:39 +0000
Transcoding and Workflow - by: filmoy
I'm new to editing and to Lightworks and was advised in a previous thread that, when using AVCHD, I should "transcode" prior to import and then again (on export?). It was suggested I use Eyframe Converter or ClipToolz Convert. I've now downloaded both of these.

Is there a guide that anyone has already written that shows a step by step process of how to do the transcoding procedure? I've searched prior to posting but could not find one. I also understand that one may have to have two lots of files, proxy and intermediate, although again I am clueless at this stage how I would do all this.

I think someone called all this a "workflow" which I assume just means what to do and the order to do it in.

Does anyone have any advice on which transcode options to select for this type of footage (AVCHD)? There seem so many. Somebody suggested ProRes and someone else Mpeg2? Again, I am clueless what this all means.

I tried a test clip on both Eyeframe and ClipToolz and noticed that (1) it took ages to transcode and, (2), the resulting (transcoded) clip was about 10 times the size of the original. As my AVCHD footage is about 15GB that means my transcoded footage would require 150GB of space (and it's only a 3 minute film!). Is this normal?

Any pointers would be appreciated. Thanks.]]>
Codecs / Importing / Exporting / Transcoding Wed, 20 Aug 2014 10:32:11 +0000
Not seeing 4K output options (or anything greater than 1080p), (11.51 pro/paid version) - by: AdrianoDirector
When I click on "Project project_name" in the top left corner, and select the "Video" tab at left, I see an "Output format" pull-down menu with nothing greater in resolution than 1080p.

I have a UHD source file, which is all I put in my edit.

When I follow instructions in the video & manual, dragging the Export Icon over the edit, the Export Tool that opens up, shows a greyed-out "Size" line which lists HD 1080 etc., and I'm not able to select another option.

In System Settings, Show Licensed Options, Under License(s) it shows Lightworks Pro.

Any suggestions on how to do 4K output? Can't find any more info on this in the manuals or in the videos. I am running on Fedora Linux.

Codecs / Importing / Exporting / Transcoding Mon, 18 Aug 2014 04:51:30 +0000