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ffmpeg high-quality conversion
| Posted by Shin Asuka, 08-16-2008, 10:22 PM |
| First of all, I don't really know where to post this, and if there's any ffmpeg specific forum out there, then do let me know
Basically, I want to do a "near-lossless" video conversion, if that is even possible, in keeping the proportion of the original video. Veoh seems a little bit better / at a higher quality than youtube, and I want to achieve higher quality than that. Literally speaking, I want the converted flv video's quality to be as close as the original video. What ffmpeg command exactly do I need to achieve this? I currently use ClipShare and is experimenting with Ostube for the php script. The default "high-quality" setting for both scripts are not that good of a quality either, with choppy images.
Anyone experienced on this field can give me an advice? Thank you!
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| Posted by rathin, 08-17-2008, 05:53 AM |
| u have to edit clipshare script,and find where command line for ffmpeg there just copy the needed formare eg
ffmpeg -i clip.3gp -f avi -vcodec xvid -acodec mp3 -ar 22050 file.avi
this command help for HQ conversion of 3gp to avi like that u can change the formate
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| Posted by Shin Asuka, 08-17-2008, 07:07 PM |
| I'm hoping for good video --> flv conversion though, not to avi or any other format.
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| Posted by Shin Asuka, 08-17-2008, 07:09 PM |
| Does bitrate will affect overall quality? Problem with flash video is, they're getting choppy, squary, pixelated when they're resized to full screen, if you know what I mean. Any way to "smooth" this up?
I'm talking about ffmpeg conversion in general, as all youtube-clone scripts uses this, it depends on the ffmpeg config really.
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| Posted by zuborg, 08-18-2008, 09:25 AM |
| If you need high quality .flv video - don't use old H.263 flv codec (flash 7) - use VP6 (flash 8) or H.264 (flash 9) instead. They are almost same quality (vp6 less blocky, h264 more details)
Also use two-pass encoding - one-pass loose quality or takes much more space for same quality compared to two-pass.
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