Jerky Video: Mpeg->Image Sequence -> Mpeg again

[tuckmeng]

Hi folks,

I want to split my AVI/MPEG2 file to a sequence of images, modify the images and then reconvert back to AVI/MPEG2 again. Please advise me on how to do it using freeware/open source tools. (Don't want to use pirated software) I have no problems getting the images, but when I put them back again into the AVI/MPEG file, I get very jerky video. I use MPLAYER to get images from the MPEG and another image->MPEG tool to put them back. How to do this properly? I have FFMPEG and MPLAYER.

Don't check the forums often. Would appreciate if you can also reply to my email, tuckmeng AT hotmail.com. Thanx.

[lordsmurf]

If it is interlaced, you must first separate the fields into frames. VirtualDub, TMPGENC and Photoshop will be the tools needed.

I cannot give more advice without testing. Never really done this on interlaced footage.

[Garibaldi]

I want to split my AVI/MPEG2 file to a sequence of images, modify the images and then reconvert back to AVI/MPEG2 again.

Do you mean get some screen shots of the video and then merge them back into an mpeg or avi? If so I can help you. A great program for converting jpegs or other image files into an avi file is slide show movie maker. Its free, and it does a great job with transitions, titles, music, ect. Then, if you want the file in mpeg format you can use bbmpeg for mpeg 2 and avi2mpeg for vcd. This will get you back where you started. If you are talking about cutting out parts of your videos I have a recommendation too. First, get your file into an mpeg-2 file. Then download demux found at: http://www.geocities.com/ted_rossin/tools/Video/Video.html
Start a command prompt (with windows 9x go to start, run, and type commmand prompt, for windows 2000 and xp go to run and type cmd). Then copy demux.exe into the folder with your mpeg-2 file, preferebly a folder with a short filename like C:\Mpegs\. then type in the command prompt: cd C:\Mpegs\ -and hit enter. This will change the directory. Then type in the command prompt: demux.exe -after demux starts type (video.mpg is my generic term for your mpeg-2 imput video, same for out): demux.exe video.mpg out -and press enter. This will demulitplex your video into the native m2v (video) and mp2 (audio) files. If your audio is something other than mp2, download BeSweet GUI and run it through there to get it to mp2. Then import the mp2 and m2v files into MPEG2Schnitt, and cut out the parts you want and then export the new mpeg and your done! I hope this helps!

[tuckmeng]

Thanx for the tips, Lordsmurf and Garibaldi.. will try out. You folks must be into some cool stuff on the video scene, since I see your posts in a few topics here...