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Suggestions to make my editing process less laggy? (MP4 isom source media)
Hello, and first of all, please excuse my ignorance!
I have recently started a Youtube project, and, as many people find, I am finding the preview window to be quite laggy during editing, in particular when I speed up footage, slow it down, or use crossfades. Now I know that I cannot eliminate it completely, but what I am hoping for are some suggestions which may help me to optimize my process (note that I am still experiencing problems using a draft preview).
I don’t believe the problem is with my machine. I am running an i7-3770K CPU with 8gb of ram and a GTX 560 graphics card. While editing the resource monitor shows that I don’t even come close to maxing out my CPU or ram.
I think the problem is perhaps my source media. I think this may be the case because I have not experienced the same problems with other media in the past. The source media which is giving me problems is as follows:
General
Complete name : D:\20140817_152845564.mp4
Files\ScaFormat : MPEG-4
Format profile : Base Media
Codec ID : isom
File size : 141 MiB
Duration : 3mn 17s
Overall bit rate mode : Constant
Overall bit rate : 5 993 Kbps
Writing application : Lavf54.29.104Video
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 : 20
Duration : 3mn 17s
Bit rate mode : Constant
Bit rate : 5 992 Kbps
Width : 1 440 pixels
Height : 1 080 pixels
Display aspect ratio : 4:3
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) : 0.161
Stream size : 141 MiB (100%)
Writing library : Lavc54.59.100FYI, the source media is from a digital microscope, and I do not have the option of capturing it in a different format.
I have tried a few options for making things run a bit smoother. One option seems to be to pre-render the footage, however this is time consuming and I cannot pre-render the entirety of the footage which I wish to edit. Is it possible that I could convert my source media into a more friendly format without experiencing noticeable loss of quality, and if so, what would the recommended format be?
Any advice or suggestions would be much appreciated!
Thanks.
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11 Replies
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Do you need ALL the MP4 footage? If not, scrub-view the footage and place REGIONS for only those selections you wish and use the VEGAS Batch render. Use MXF or use the one I use LAGARITH.
Do a Test selection just to conform the output.
Grazie
Video Content Creator and Potter
PC 7 64-bit 16gb * Intel® Core™i7-2600k Quad Core 3.40GHz * 2GB NVIDIA GEFORCE GTX 560 Ti
Cameras: Canon XF300 + PowerShot SX50HS Bridge -
Hi Graham,
I do not need all the MP4 footage. I tend to watch the footage to pick out the best bits as a lot of the footage is not in focus. If I understand you correctly, your suggestion is to scan through the footage for the bits that I want, and to render those regions using either a MXF or Lagarith codec (neither of which I have heard of, showing my ignorance here!). I’m guessing then the idea would be to begin editing my project using those rendered regions, which may lead to less lag in the preview window than the original source media? Apologies if I’ve misunderstood. I’m assuming I would not have any loss in video quality (or minimal) using this approach?
Heck, I’ll give it a try. Thanks for your suggestion!
Michael. -
Your Vegas version? VP13 has PROXY feature – use it!
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Aleksey, does your proxy approach allow for Batch Render Regions?
Grazie
Video Content Creator and Potter
PC 7 64-bit 16gb * Intel® Core™i7-2600k Quad Core 3.40GHz * 2GB NVIDIA GEFORCE GTX 560 Ti
Cameras: Canon XF300 + PowerShot SX50HS Bridge -
> “Aleksey, does your proxy approach allow for Batch Render Regions?”
Not sure I understand your question. Vegas Pro 13 allows to create proxy files. This will eliminate “laggy preview” during editing.
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How long does Vegas take to create a Proxy?
Grazie
Video Content Creator and Potter
PC 7 64-bit 16gb * Intel® Core™i7-2600k Quad Core 3.40GHz * 2GB NVIDIA GEFORCE GTX 560 Ti
Cameras: Canon XF300 + PowerShot SX50HS Bridge -
It depends on the total duration of your source media files. Vegas’ proxy format is XDCAM EX.
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Just the length? Our colleague wants to handle an MP4 which is already laggy. Dies the Format of the Medua make proxy creation longer too? You said length. Do the Proxy creation times get affected by type?
Grazie
Video Content Creator and Potter
PC 7 64-bit 16gb * Intel® Core™i7-2600k Quad Core 3.40GHz * 2GB NVIDIA GEFORCE GTX 560 Ti
Cameras: Canon XF300 + PowerShot SX50HS Bridge -
I think it is obvious… Creating a proxy is essentially a rendering process.
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So, Aleksey, what is faster:
A: Proxy creation.. As this is dtermined by length and format.
or….
B: Create a redu to go once off render by regions versions of your editable selections?
A or B?
Cheers
Grazie
Video Content Creator and Potter
PC 7 64-bit 16gb * Intel® Core™i7-2600k Quad Core 3.40GHz * 2GB NVIDIA GEFORCE GTX 560 Ti
Cameras: Canon XF300 + PowerShot SX50HS Bridge
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