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How Can I Render HD WMV Videos at Small File Sizes Without Losing Much Picture Quality?
I need to render videos that can be sold through the internet, and the majority of people who buy them prefer WMV so using another file format isnt an option.
With that said,
When I render my video files, a 1280×720 HD file usally is right around 40GB per minute of video, and a 640×480 3Mbps file is usually around 20GB per minute of video, both of which contain only 1 video track, 1 audio track, and no transitions, etc.
I have noticed other sellers WMV clips of the same size are roughly half the file size as mine are, but looking at their preview clips the quality is just as good, if not better than mine.
For this reason there MUST be a way to reduce the file size when rendering???
I dont know a lot about render settings, but heres what I think might offer some insight to mine?
Video: HDV 1280×720 30fps
render Quality: Good or Best
Deinterlace method: InterpolateRender as: WMV V11, 6Mbps HD 720-30p
Mode: CBR
Format: WMA 9.2
192kbps 48khz
Smoothness: 90
Bit Rate: 6MThese are settings Ive watched people in the few turorials found show how to make small videos, but they dont???
Is there anything I can do to reduce my file sizes by 25-50% and maintain MOST of my image quality???
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8 Replies
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What did you use to shoot the videos??
John
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Sony HDR XR550v. Uploaded first into the PMB software they provide, and then from there into sony vegas hd 9.
Oh, and I meant the 1280×720 and 640×480 are around 40 and 20 MB per minute, not GB. But like I said, I see others HD wmv videos who are same and or better quality and their file sizes are half of mine…
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Send me your email address and I will send you a link to a video shot with the same camera rendered at 2m.
John
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Here is a video rendered at a very low bit rate 512k yet if there isn’t too much movement the results look pretty good.
https://www.movingmoment.net/Byron.wmv
John
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“…and the majority of people who buy them prefer WMV…”
I haven’t had a client yet to specify WMV. Most users could care less – they just want a video file that plays.But, your bit rate seems a bit high (Bit of a pun there).
Steve Mann
MannMade Digital Video
http://www.mmdv.com -
Thanks,
Movie looks decent quality.
I’m going to try to play around with changing the Bit rates and see if it helps. Hope so!
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Yep, I tried different bit rates and it made all the difference in file size, and my video quality is still really nice! Thanks
I take it though doing so doesnt cut down on render times at all? My render times seem to be 2-3x as long as everyone elses. It takes me 2.5- 3 hours to render a 10 minute 640×480 and I have 4 ram and supposedly lots of free space… do graphics cards have anything to do with render time – NVIDA installed faulty ones some computers purchased at certain dates and my computer is among those types…
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Try experimenting with the VBR (variable bitrate) modes for WMV. It looks like you’re using CBR (constant bitrate) at 6Mbps. Try customising the WMV video compression settings to VBR (you can choose bit rate or quality) and experiment with the values to see what sort of average bitrates you get. Try 5Mbps average (or quality or 75-80) for 720p and see how the bitrate (and filesize) compares to your 6Mbps CBR renders. Just how effective this is will depend on the material – how much movement, detail and abrupt changes/cuts there are.
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