Lightworks: The professional editor for everyone - Forum Kunena Site Syndication Thu, 24 Jul 2014 12:59:24 +0000 Kunena 1.6 Lightworks: The professional editor for everyone - Forum en-gb Lightworks never finishes analysing, stops analysing other files - by: Quitch
I've started running into an issue where as I scroll down my list of video files (MP4, 1080P, AVCHD) for import, there are a few which never leave "analysing". Eventually, Lightworks seems to give up and I hit a point in the list where every file from that point forward simply displays "analysing". I left it overnight to see if it was simply CPU intense files, but when I came back in the morning the program was simply reported as "not responding". Even if I don't let it get to that stage, once it has hit this "analysing" bug I can't quit the program it simply tries to quit forever until it hits this not responding state and I have to forcefully terminate the program.

The files which it is stuck on analysing appear to be ones which cause the program to hang if dragged in, but when I hit the point where it's simply a long list of files in "analysing" then a number of them work and my guess is that the program will only simultaneously analyse so many files and it's stuck on enough by that point that it's no longer working on them.

I tried using EyeFrame converter to turn one of the files into the DNxHD 36 format in the hope this would resolve the issue, but despite the fact that the end file worked fine in my media players, Lightworks would only see it as a sound file.

I also have problems with numerous MP3 files (which naturally work fine everywhere else) not being importable until I convert them to WAV.

The program just seems frustratingly flaky when it comes to import and I don't know if there's anything I can do about it. I'm going to try and identify the problem files and see if moving them elsewhere resolves the issue, but it's long-winded because the program handles this situation so poorly. It should just timeout on them or something, but it keeps analysing forever. Ideally it should just be able to analyse them.]]>
Codecs / Importing / Exporting / Transcoding Thu, 24 Jul 2014 07:31:04 +0000
last lwks version, which supported capturing eg from dv...? - by: lghtwrks
Codecs / Importing / Exporting / Transcoding Wed, 23 Jul 2014 19:51:21 +0000
Any info re: RGBA Lossless Compression Codec? - by: JagoBC
Apparently, the RGBA codec only becomes available when both the 32 bit and the 64 bit versions of Lightworks are both installed on the same machine (at least that seems to be the case on my machine). Does anyone know who manufactures the RGBA Lossless codec? Can I get a copy and install it on my computer without having to keep both versions of Lightworks?

Codecs / Importing / Exporting / Transcoding Wed, 23 Jul 2014 12:19:17 +0000
compressed width-height-ratio - by: utzrk
I am experimenting with the free version of Lightworks and imported a AVI-Video file recorded with a Sony VX100 camera on the wide screen setting which I captured into a computerfile with another Sony DV-camera using Premiere Elements 8. In different video-editing programs this file will be showed correctly. In lightworks it shows as a width-compressed (almost anamorphotic) image of the original. What is the reason of this?
Here are the file stats:

Complete name : F:\premiere\film-projekte\Schulmonster\Monster 02 48.avi
Format : AVI
Format/Info : Audio Video Interleave
Commercial name : DVCPRO
File size : 104 MiB
Duration : 29s 240ms
Overall bit rate mode : Constant
Overall bit rate : 29.9 Mbps
Recorded date : 2013-07-10 14:45:59.000

ID : 0
Format : DV
Commercial name : DVCPRO
Codec ID : dvsd
Codec ID/Hint : Sony
Duration : 29s 240ms
Bit rate mode : Constant
Bit rate : 24.4 Mbps
Encoded bit rate : 28.8 Mbps
Width : 720 pixels
Height : 576 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 : Interlaced
Scan order : Bottom Field First
Compression mode : Lossy
Bits/(Pixel*Frame) : 2.357
Time code of first frame : 00:00:13:20
Time code source : Subcode time code
Stream size : 100 MiB (96%)
Encoding settings : ae mode=full automatic / wb mode=automatic / white balance= / fcm=manual focus

ID : 1
Format : PCM
Format settings, Endianness : Little
Format settings, Sign : Signed
Codec ID : 1
Duration : 29s 240ms
Bit rate mode : Constant
Bit rate : 1 024 Kbps
Channel(s) : 2 channels
Sampling rate : 32.0 KHz
Bit depth : 16 bits
Stream size : 3.57 MiB (3%)
Alignment : Aligned on interleaves
Interleave, duration : 975 ms (24.37 video frames)

Utz Kaufmann]]>
Codecs / Importing / Exporting / Transcoding Wed, 23 Jul 2014 12:06:52 +0000
Issue with Importing 120fps GoPro Footage - by: JC-Moto
I've just downloaded LightWorks and tried to import my raw GoPro footage which was shot in 720 at 120fps.

The import screen in LightWorks says the following for each of my video files;

Format: 720p, AVCHD
Rate: 48 kHz (This is shown in red text)

And when you double click on the file it says;

Unable to import into the current project, check frame rate and audio sample rate.

So I'm guessing it either doesn't like the frame rate I've used, or it doesn't like the native MP4 format that the GoPro kicks out.

Either way, how can I get LightWorks to import my footage?]]>
Codecs / Importing / Exporting / Transcoding Tue, 22 Jul 2014 14:29:50 +0000
Error: vhead: allFetchesFailed and black video on playback of DV AVI files - by: ScottyPcGuy_03

After upgrading to 11.5.1 I've been running into an issue with some DV/AVI files playing back (imported with the "Create as link" option). Audio plays back fine, but two out of three clips in my sync group have black video. The error console shows the following:

This is an old project that I've had going for a year or two now. I could see all three in 11.0.2, but ever since I upgraded to 11.5.1 I've had this issue. I've tried transcoding the files on import and it makes no difference. If you look at the screenshot, you'll notice the three clips in a sync group, only one of which actually displays video. When I attempt to play the other two clips (whether from the bins or the sync group), the Status Window displays "vhead: allFetchesFailed and best_node null *random number here*"

I've made sure my display drivers and DirectX are up-to-date.
Here's my mediainfo dump. Please let me know if you need more info.

Codecs / Importing / Exporting / Transcoding Mon, 21 Jul 2014 21:18:47 +0000
The file I want to import won't appear - by: coralita Could someone please tell me what the problem is or what I have to change.
Thank you!]]>
Codecs / Importing / Exporting / Transcoding Mon, 21 Jul 2014 13:20:48 +0000
File hangs Lightworks on import. Supported format? - by: Quitch
If the file is viewed in the import window then it shows as "not analysed" and retrying the analysis leads to it never getting past "analysing", and if it's dragged into Lightworks then Lightworks stops responding and must be terminated.

File which doesn't work:

File using the same recording settings which does:

Is this a file that should be causing Lightworks issues? If so is Eyeframe Converter still the best route to go down for changing my files to a friendly format?]]>
Codecs / Importing / Exporting / Transcoding Mon, 21 Jul 2014 10:24:16 +0000
Help with exporting - by: Dividentification Codecs / Importing / Exporting / Transcoding Sat, 19 Jul 2014 22:50:40 +0000 [SOLVED] Stuttering MP4 Playback - by: EzraLock
I am wondering if anyone would be so kind as to help me fix this issue.

I have recorded video with my Logitech HD Pro Webcam C920. When I come to view and edit the footage in Lightworks, the playback is ok for the first few seconds and then stutters and stops completely for the majority of the clip making it uneditable.

I have read numerous posts on the forum stating that Lightworks does not much care for MP4 format. Please correct me if I am incorrect. I am not knowledgeable on transcoding (Don't really know anything). Can anyone explain to me in simpleton terminology, how to fix the issue and recommendations on what programs to use to transcode if I have to do this.

When transcoding to another format, do videos loose quality once complete?

My rig is a pretty decent rig so I am pretty sure that is not the issue. Please see the specs below:

- Windows 7 64 bit
- Corsair A70 Ultra Quiet CPU Cooler
- Asus P8Z68-V LE Motherboard
- 16GB PC3-10666 1333MHz DDR3
- Intel(R) Core(TM) i7-2600KCPU @3.40GHz
- AMD Radeon HD 6970 2048MB
- Corsair Ultra Low Noise 600W PSU
- 120GB Corsair Force 3 SSD
- Samsung 1TB 7200RPM Hard Disk

I would love to continue to use Lightworks as it seem very intuitive. Look forward to a response from one of you lovely helpful folk ]]>
Codecs / Importing / Exporting / Transcoding Sat, 19 Jul 2014 19:49:59 +0000
Apple ProRes 444(4)/Avid DNxHD "444" Myths, "400" is most important... - by: lghtwrks "4:0:0 = get the exposure right"

(*controversial* (?) - I don't hope so. sometimes it's best to just edit all the material in lwks - as "1st person shooter" - not going too deep into data wrangling etc. - just cut the movie)

use 444 (probably) if:

- you have the right cam (red, arri, dslr-raw*...) (* canon video: 14-bit)
* the location setup demands/you want to get that scene // and you have time (raw footage handling)

- you have a complex lightning setup which your camera could not handle -> raw (eg. too less/much light/different l. sources (K°), both in one scene / [xy-f-stops]*) + 444 can handle some kelvin diff. (in raw you handle col.temp afterwards)
* ND-grade (hardware) -> any cam could benefit of it...

X (direct import)
- you have a fast storage system
- you have a very fast storage system (using sync groups)

X (proxy)
- you have enough storage to edit/make proxies/make 444 and backup your origninal files, proxies, 444 and misc. renderings (eg. DPX)
- you have enough storage space to be able to render the proxies to edit on your editsystem and export the intermediate afterwards (this storage does not have to be fast)
- you have enough _time_ to render proxies and "444"

- you are recording raw (hough data), eg. you need much storange on-set
more fps > more data (24fps <-> 120fps), more hds, more CFs etc.
- you are recording with a flat "in-camera" profile (that needs correction, but has standard data rate of the cam) and/or a LUT (prof. cams provide this for diff. film looks [=cc+grades]) (the gpu does it for you, if you got that gpu)

- you have someone who does the cc/grading (money, time)
- you have an correct workflow (round trips NLE/CC/Audio with various AAF/OMF exports/imports)
- you have time to cc/grade all the files yourself (time/knowhow)
- you use a LUT on all your files and that is ready to go (most time this is not the final look - corrections...)

- 4444 ("greenscreen")

- film scan

- you use timecode at all

- you have dual link hd-SDI or 3G-SDI (preview)

- "heavy"(?) FX work, which could benefit of "444"(4*) "upsampling" - *alpha

- if your footage did "clip", it does the same after converting to 444
if there is no "information", then there is no information (you could try to mix any RGB channel with info to the channel which clips, but...)

your final export has to be a "good film"
of course, the source material you are recording has to be "ok" (eg think about the "live" sign @ tv, rec 709)

setup your camera right (presets)
check lightning (luminance is more important than colour, 4:0:0 ,-)
check iso
check exposure
check white balance (short test record, if multicam)

record to any standard HD format/recording 8-bit/4:2:2, 4:2:0 ("lossy") ["h.264","mp4","xy/mbit"]
use your source files ("create link"-import) or record/convert to ProRes 422 or (max. ProRes HQ) (as "some apps" just have "some import formats"*)
* DNxHD and ProRes are "robust codecs", that's fine...
if you can record to an external device (via HDMI) it gets better ...

slightly CC/grade in your NLE (3-way CC)
(photography: load a 84% compressed .jpg file into an photo raw-converter, you can play around with sliders, but "the limits are defined" (eg. hasselblad uses 15 bit, afaik nikon 14, internal processing is much higher/eg. NikonD810/EXPEED-4 etc... - HDMI-out 10-bit 4:2:2 -> gradients), jpg uses 8-bit and these RGB 8 bits (24 at all) are not visually lossless compressed*).
(or open a JPG in photoshop and save it as as .TIFF/LZW(really lossless compressed) - nothing happens)
* "Apple ProRes 422 (HQ) offers visually lossless preservation" (10-bit, over "some" generations)


done - next one ...

do a trip to get "the next idea", instead of too much round trips for a nice little clip (cc dep./data wrangler)
"better codec" does not mean "better film"

* you could still export your final cut "uncompressed" (or ProRes/DNxHD) and give it away (handle it over) for cc/grading** (if you really just cut, "no visual information is lost")
** that's what the "handle" size is for, that even can be 10.000 ,-)(frames, not dollars)


this post will get edited on demand]]>
Codecs / Importing / Exporting / Transcoding Thu, 17 Jul 2014 23:11:24 +0000
can't export to blu ray pro license - by: mattgeb84 Codecs / Importing / Exporting / Transcoding Thu, 17 Jul 2014 19:10:37 +0000 Problem importing dpx sequence - by: nrebelo
I've been trying to import a dpx sequence (about 90min video) and it only imports 38min (see picture), although it sees all the files (about 132K frames, shows in picture)
The DPX files were created by lightworks, and successfully used to create a DCP master.

Anyone has an idea why?

I'm using the 64bit 11.5.2B Pro version.

Codecs / Importing / Exporting / Transcoding Thu, 17 Jul 2014 15:50:50 +0000
Can't Import AVI - by: Teckdragon Codecs / Importing / Exporting / Transcoding Thu, 17 Jul 2014 13:40:04 +0000 Chromakey footage looks TERRIBLE after upload but perfect in media player?? - by: BrianVid
The videos come out low size great quality.. but then I uploaded them to Youtube and Vimeo, I literally had to delete every video because around the edges of the talent was a 2cm thick distortion like a blurred halo.. can't begin to guess why.

Can anyone make any suggestions?

Thanks in advance.]]>
Codecs / Importing / Exporting / Transcoding Thu, 17 Jul 2014 09:11:40 +0000
exporting to youtube - by: NOTTHATLOW Codecs / Importing / Exporting / Transcoding Wed, 16 Jul 2014 22:09:20 +0000 Exporting to youtube - by: bill beans
I have the free version so it can only be exported to youtube.

I set the export on Edits as shown in the lightworks training videos.
The export is set at 720 and 25 frames per.

I turned off sleep mode on my computer.
The export has been running for 4 hours and the progress blue bar is 1/4 inch out of about 3 inches.

can anyone explain what may be the problem.

Codecs / Importing / Exporting / Transcoding Wed, 16 Jul 2014 18:45:34 +0000
Audio is perfect in preview, but jumpy after export? - by: GracefulWalrusPK
So I just finished editing a epic teaser trailer and there is this one obvious audio jump almost at the end of the video. The weird thing is, the audio is *perfectly* fine in the preview. Even the wave forms looks identical. But when I export the file, the audio jumps to a slightly higher volume in that small spot.

It's noticeable, sadly.

I see people are posting the media coded mp4 with their new thread. Should I be doing that too? Thank you.]]>
Codecs / Importing / Exporting / Transcoding Wed, 16 Jul 2014 09:19:39 +0000
audio problems when exporting for dvd - by: mattgeb84 Codecs / Importing / Exporting / Transcoding Wed, 16 Jul 2014 01:33:48 +0000