![]() The file size is equal to the data rate times the number of seconds in the video. Create a 2-pass VBR encoding with an average data rate determined by the size and time. If you want to see how it works out when you use the highest possible quality that will fit your size requirements, you can simply calculate the data rate. That's over 12 times the information and you are trying to fit it in just over twice the space. You are trying to do 60fps 1080p video and get it under 2GB for 4 minutes. For comparison sake, DV video (at standard definition) takes a gigabyte per 4.7 minutes, which is at a good, high quality level of compression. If you need to import this file into Lightworks, you’ll need to follow these instructions on converting videos for importing into Lightworks.Depending on your definition of high quality, this is impossible. The only downside to the file we just made is that Lightworks won’t be able to import it. When you’ve adjusted the options according to your video, run the command and wait patiently as Avconv crunches your video. Flac is a lossless audio codec with good compression, so it works well for our master copy. You can use a shorthand string like hd1080, hd720 or write out a custom size as width by height, such as 1920×1080. pix_fmt is the colorspace for the video. qp is specific to the libx264 codec and is what tells avconv to make this video lossless. Faster encode times will mean larger files, and slower encode times means smaller files. It determines how fast your computer will process the video. preset is specific to the libx264 codec. You can experiment with different codecs, but x264 will allow you to make a lossless video with a relatively small file size. r:v specifies the output frame rate for the video. Notice the first instance uses %06d in the file name to indicate that this part is an increasing number with leading zeros and 6 total digits. Because we have separate audio and images, we use the flag twice. This should match your Lightworks project. f specifies the format, in this case “image2” means an image sequence. Below is a brief description of all of the options used in this command. Since we have thousands of images we want to combine into one video, we need a few more options. When converting a video, usually all you’d need to use is the “-i” flag to specify the input file. The first thing Avconv wants to know is what files it should convert and anything special it should know about them. Lets break down this command so you know what’s happening here. If you don’t have it installed, you can do so with the following terminal command:Īvconv -f image2 -r 30 -i movie-%06d.tga -i movie.wav -r:v 30 -c:v libx264 -preset veryslow -qp 0 -pix_fmt yuv420p -s:v hd1080 -c:a flac out.mkv We’ll be using a program called Avconv to compile our image sequence. Leave the destination folder and name the same, and export again. Meaning all of the files will be named movie dash six digit sequence number dot tga.Įxport the image sequence, then in the export settings change the format to “WAV”. This will be the prefix for the image files that Lightworks creates. Select the new folder as your destination folder and also set the name to something short and simple, like “movie”. ![]() Click on the destination folder and navigate to where you want to save your exported video.Ĭreate a new folder to hold your images. PNG sometimes introduced artifacts into random frames, and JPG looks to have been significantly compressed already. I found TGA produced the most consistent results. ![]() Open the export settings window and change the format to “Image sequence” and the file type to “TGA”. ![]() Something about the way that Lightworks exports UYVY doesn’t play well with video converters, so you end up stuck with a huge archive video that Lightworks itself can’t even re-import! So until Edit Share fixes these problems, here’s a workaround for exporting a high quality master copy of your edits. That’s because UYVY is totally raw, uncompressed video. Exporting to UYVY will give you a ridiculously massive file in the range of ten gigabytes per minute. Exporting to DVCPRO100 (the Lightworks preferred format) will result in a video that doesn’t play in some players or plays back with strange black borders in others. The Lightworks for Linux beta currently has many issues with exporting videos. ![]()
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