Lightworks: The professional editor for everyone - Forum Kunena Site Syndication Tue, 23 Dec 2014 02:17:08 +0000 Kunena 1.6 Lightworks: The professional editor for everyone - Forum en-gb Time difference in original and imported clip - by: KotBayun I've noticed that my imported clips have missing parts in the end. The original clip length is 8:50, but imported clip length is 7:04. All video after this point is unavailable, original clip can be played till the end with VLC. Please help!
Codecs / Importing / Exporting / Transcoding Sun, 21 Dec 2014 19:14:01 +0000
Audio Sync issues on Export - by: terryg
Very new to lightworks and have only done a little video editing from time to time over the years. I am trying to produce several short clips - essentially music video style clips, for a high school project for my daughter.

So no audio from the original imported video clips is being used. Those tracks are muted - an in some cases even deleted. But we are trying to sync the video clips to the imported audio track. In some cases it is working great. But for other videos, playing on the timeline is working great - but the exported video gets out of sync.

And the crazy thing it, there is no repeatable pattern to it. In fact, some clips in the same video or good, while others are out of sync.

Confusing me even more is that, on the first night, we had one of the worst offenders with the audio about a half a second out of sync on export. We checked the timeline again within lightworks and it was fine. When I went back to the project the next day, the timeline was now showing the exact audio shift we saw in the exported video. So I moved the clips around until it was perfect, then exported again and it was now perfect. Great! So I try the same thing with the other edits and no such luck. I still get a shift on output on some songs that isn't present when playing them in the timeline.

All the video was shot using a Nikon D3200. I have seen a lot references here to whether the video clips are variable bit rate. I think they must be because the properties show a different data rate for various clips.

The audio tracks were created in Audacity and exported to mp3 at 128kps.

So my primary questions are: if the problem is the variable bit rate of the original video source, is my only solution to re-import the video clips again? And why would the timeline in Lightworks for one edit sudden reflect the actual output after opening the project again some time later?

Thank you in advance,

Codecs / Importing / Exporting / Transcoding Sun, 21 Dec 2014 18:18:38 +0000
Is Importing possible - by: Jpaulbiss Below is a file from media info]]> Codecs / Importing / Exporting / Transcoding Fri, 19 Dec 2014 00:57:02 +0000 LW refuses to export my videos properly - by: Dazia
My videos start out just fine when I play them in a media player after exporting. The further in it gets, the worse the quality gets. It's hard to explain. The audio is possibly off sync, but it also appears that LW starts dumbing down the video ie. like frames are being removed and smoothed over? It's hard to describe. I've tried exporting the same file twice with identical results. My videos can be fairly long so I don't know if LW is just a bad program to use for anything over 10 minutes or what? This current video is 19:30. I've had others closer to or over 45 minutes that didn't seem to suffer as badly, but did show the same signs at the end. I ignored this because on the previous videos it wasn't as major as this current one.

I'm not trying to be a negative Nancy but this is frustrating. If anyone can offer me some advice, I'd greatly appreciate it. I've tried reading up on this before but the only suggestion I could find was the use of another program and not really sure if that same advice would work in my situation. This isn't an option for me. When I use a program, free or not, I expect it to work properly and consistently. So if there is some trick or setting I need to know about, that would be awesome to let me know, thank you.

Currently I just have it set to export at 720p YouTube quality, which it doesn't always show up as 720p on YouTube (not sure if this is a LW problem upon exporting or possible my upload/Internet speed/something got corrupt?). I do the Copy Local option to import my raw gaming footage then edit out unwanted clips. I sometimes use create link but that's for super tiny stuff like 1 second audio clips, or still images, etc. I tend to try to use Copy Local when I remember even for the smell stuff tho.

Can't really think what else to say or what information to give on this Sigh.]]>
Codecs / Importing / Exporting / Transcoding Thu, 18 Dec 2014 00:55:58 +0000
importing images - by: Flo-der-Po
I hope someone can help me with this issue I am having. After I changed the location for media files I can no longer import image files.
It says the file already exists (in the path I am storing all the related data) and the file was not written in C:/users/public etc...
When I try to reimport the files via drag and drop I can see and use them but they are out of scale.
Switching the location back did not help.

Thanks in advance and sorry for spelling mistakes.

Codecs / Importing / Exporting / Transcoding Wed, 17 Dec 2014 16:43:41 +0000
Mpeg422 export problem - by: leo.suonikko
I'm using Lightworks 12.0.2 on Ubuntu trusty. The problem occurred on 12.0.1 too.]]>
Codecs / Importing / Exporting / Transcoding Wed, 17 Dec 2014 10:49:15 +0000
failure when importing AVI clips - by: cinegato
The container is AVI, codec is AVC, audio codec is AAC.
Video info in detail:

Format : AVC
Format/Info : Advanced Video Codec
Format profile : Main@L4.0
Format settings, CABAC : Yes
Format settings, ReFrames : 4 frames
Format settings, GOP : M=3, N=15
Codec ID : H264
Duration : 13s 714ms
Bit rate mode : Constant
Bit rate : 4 001 Kbps
Width : 1 280 pixels
Height : 720 pixels
Display aspect ratio : 16:9
Frame rate : 29.970 fps

Does anyone know how to handle the problem? Would be grateful. Thanks in advance.]]>
Codecs / Importing / Exporting / Transcoding Wed, 17 Dec 2014 09:20:19 +0000
Wont let me export properly(free version) - by: Impactiv

Codecs / Importing / Exporting / Transcoding Wed, 17 Dec 2014 01:41:09 +0000
issues with importing a mp4 file - by: vshtabnoy
I have a pretty large file at around 2GB that I am trying to import into Lightworks. I've tried to copy local, create a link, and transcode. They all give me a file that is purely sound, and no visual. What am I doing wrong here? I tried to scan the board to see if a similar question has been asked and follow the answers that were given if it was applicable but I'm getting nothing but sound.


Format : MPEG-4
Format profile : Base Media
Codec ID : isom
File size : 2.52 GiB
Duration : 2h 12mn
Overall bit rate : 2 731 Kbps
Movie name :
Writing application : Lavf56.13.100
Comment :

ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4.1
Format settings, CABAC : Yes
Format settings, ReFrames : 4 frames
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 2h 12mn
Bit rate : 2 500 Kbps
Width : 1 920 pixels
Height : 808 pixels
Display aspect ratio : 2.40:1
Frame rate mode : Constant
Frame rate : 23.976 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.067
Stream size : 2.31 GiB (92%)
Writing library : x264 core 142 r2491M 24e4fed
Encoding settings : cabac=1 / ref=4 / deblock=1:-1:-1 / analyse=0x3:0x113 / me=umh / subme=9 / psy=1 / psy_rd=1.00:0.15 / mixed_ref=1 / me_range=24 / chroma_me=1 / trellis=2 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=-3 / threads=32 / lookahead_threads=4 / 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=50 / rc=2pass / mbtree=1 / bitrate=2500 / ratetol=1.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / cplxblur=20.0 / qblur=0.5 / vbv_maxrate=31250 / vbv_bufsize=31250 / nal_hrd=none / filler=0 / ip_ratio=1.40 / aq=3:1.00

ID : 2
Format : AAC
Format/Info : Advanced Audio Codec
Format profile : LC
Codec ID : 40
Duration : 2h 12mn
Bit rate mode : Constant
Bit rate : 224 Kbps
Channel(s) : 2 channels
Channel(s)_Original : 6 channels
Channel positions : Front: L C R, Side: L R, LFE
Sampling rate : 48.0 KHz
Compression mode : Lossy
Stream size : 212 MiB (8%)
Language : English
Codecs / Importing / Exporting / Transcoding Tue, 16 Dec 2014 13:52:29 +0000
[SOLVED] Why does Lightworks lag when playing stiched edits in the timeline - by: mgs108tlou
Intel Pentium Dual - Core E5800 3.2GHz (64-bit)
NVIDIA GeForce GT 430

Okay, I realize these specs aren't the greatest but Lightworks is virtually unusable. I am unable to see how the cuts look when played. It's like trying to edit a video with a blindfold on!

Will increasing my RAM help? According to Task Manager, I'm only using between 65% and 85% of RAM when playing the edit.

Is it my processor? Do I need a better GPU? My PC runs most programs fine, except Chrome, which is also laggy...

I'm running the latest version of the 64bit beta (the locked 64bit won't install correctly and the locked and beta 32bit versions perform the same way as 64bit beta).

Video clip resolutions are 720p. Video output is 1080p.

Any help is greatly appreciated!

This is not a bug, so this thread has been moved. The "Bugs" forum is intended to be used for bug reporting, not for help with operational problems.

You're more likely to receive the help that you need here.
Codecs / Importing / Exporting / Transcoding Mon, 15 Dec 2014 03:35:34 +0000
4:3 split screen video - by: Primaguida

I'm using LW free version from few days, and everytime I try to create a 4:3 split screen video I get a 16:9. I watched all basic tutorials and some advanced, but probably I forgot something; I'm just caring about "Project video - Output format", but that's not enough at the moment.

This is a Movie Maker video I made

I would like to obtain the exatly same thing from LW.

I'm using licensed FRAPS to record at 30 fps from my 4:3 monitor, and FormatFactory to convert videos to AVC(H264) codec; then I just put them in LW.

Thank you

Edit: Malwarebytes Anti-Malware doesn't like MediaInfo, sorry.]]>
Codecs / Importing / Exporting / Transcoding Sun, 14 Dec 2014 19:24:26 +0000