Search found 9 matches

by Mister-T
24 May 2009, 17:22
Forum: Resizing & Cropping
Topic: How to crop 16:9 to 4:3
Replies: 12
Views: 12111

Re: How to crop 16:9 to 4:3

To convert 848x480 to 640x480 by 'cutting off the sides' you need to crop 208 pixels off the width - this should be 104 off each side. Enable crop ping on the edit tab and enter 108 in the L and R fields. The crop fields are U - upper B - bottom R - right L - left Enter a number and this amount of p...
by Mister-T
10 May 2009, 19:49
Forum: Video Related
Topic: How to convert DVD files with many VOB files - solved
Replies: 1
Views: 4249

How to convert DVD files with many VOB files - solved

If you backup a DVD onto a PC it will have a few VOB files as the maximum is usually set at 1GB. To convert a DVD backup using QMC to any other format you need a single VOB file because QMC can only convert a single VOB file (please correct me if I wrong). To join the VOB files use DVDShrink and go ...
by Mister-T
10 May 2009, 19:22
Forum: Video Related
Topic: How to convert to Creative Zen format - solved
Replies: 1
Views: 4247

How to convert to Creative Zen format - solved

Instructions for making AVI files that work on the 4/8/16Gb Zen (just the 'zen', haven't tried it on any others) 1) Select EXPERT mode 2) choose AVI as the FORMAT 3) Tick the "use command line only box" 4) copy and paste the following in the command line at the bottom: -vtag XVID -r 25 -s ...
by Mister-T
17 Apr 2009, 09:09
Forum: Expert Users Mode
Topic: Can I control quality (quantizer level) in XVID
Replies: 8
Views: 8947

Re: Can I control quality (quantizer level) in XVID

To convert camera MJPEG videos to MPEG4 video + MP3 audio with minimal loss of quality More testing and now I'm using: -vtag xvid -r 30 -qscale 5 -g 150 -aic 2 -mbd 1 -flags +4mv+umv -acodec mp3 -ar 22050 -ab 64k I've removed the size parameter (default is output=input) and I've 2 resolutions. Adde...
by Mister-T
16 Apr 2009, 21:17
Forum: Expert Users Mode
Topic: Can I control quality (quantizer level) in XVID
Replies: 8
Views: 8947

Re: Can I control quality (quantizer level) in XVID

Another update: Starting with the same clip each time and adding just the following: -bf 1 -b_qoffset 3 (1 B frame) made a 3.5% reduction in file size but slowed from 67fps to 35fps (so not worth it for speed sake). -bf 2 -b_qoffset 3 (2 B frames) made the files 4% smaller. -mbd 1 made the file 1% s...
by Mister-T
16 Apr 2009, 19:38
Forum: Expert Users Mode
Topic: Can I control quality (quantizer level) in XVID
Replies: 8
Views: 8947

Re: Can I control quality (quantizer level) in XVID

I've had a second look and the ffmpeg (FMP4) conversion is very fast compared to XVID (and compression is slightly better). Only problem is the FMP4 format has had compatibility issues just because early players didn't know what it was. So I'm using the command -vtag xvid to label it as a XVID file ...
by Mister-T
16 Apr 2009, 15:46
Forum: Expert Users Mode
Topic: Can I control quality (quantizer level) in XVID
Replies: 8
Views: 8947

Re: Can I control quality (quantizer level) in XVID

Thanks, Found useful info for ffmpeg at http://ffmpeg.mplayerhq.hu/ffmpeg-doc.html Eventually got my preferred command line to be this (using "use command line only" option) : -vcodec xvid -r 30 -qscale 7 -s 640x480 -acodec mp3 -ar 22050 -ab 64k Explained: - XVID video codec; - frame rate ...
by Mister-T
14 Apr 2009, 22:25
Forum: Expert Users Mode
Topic: Can I control quality (quantizer level) in XVID
Replies: 8
Views: 8947

Can I control quality (quantizer level) in XVID

I want to convert videos from various Fuji cameras to AVI (MPEG4 [xvid] video + MP3 audio) as they are recorded in the very inefficient MJPEG video + PCM audio format. I want to maintain quality and I usually do it in AVIDEMUX and set the quantizer level (at say 5 or 6). The bitrate then varies wide...
by Mister-T
14 Apr 2009, 22:07
Forum: Expert Users Mode
Topic: Smaller picture size but larger file.
Replies: 2
Views: 4420

Re: Smaller picture size but larger file.

Your original file has MP3 audio (compressed) - your output file has PCM (uncompressed) - the increase is in the audio part of the file. Try (in expert mode) changing the output to 64K Mp3 (more than adequate for mobile use) and the file size will drop dramatically.

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