I ripped a DVD using Mac the Ripper and then converted it to both avi and mpeg-4 using XX iMedia Converter. Both files have terrible picture quality. I even specified a higher resolution on the avi file. (I used the trial version of iMedia Converter). Where did I go wrong? What products do you use? I don't mind paying if I get something quality.
To rip and convert DVD on Mac, I recommend Aunsoft iMedia Converter for Mac. It is all-in-one software which is combined with DVD ripper, Blu-ray ripper and all video converter. You can rip Blu-ray/DVD, convert HD/SD videos, and edit files with one tool. Aunsoft iMedia Converter could make full copy of Blu-ray/DVD discs or convert them to other formats for playback or editing. For dealing with DVD converting problems, it converts DVD to various SD/HD formats like avi, mpeg-4, mpeg-2, mov, wmv, flv, mkv, ProRes, AIC, DNxHD, etc for playing on portable devices, TVs or editing in various editing software.
For the converted videos, you will find them in high quality and perfect video/audio synchronization. It will surely satisfy your need. Aunsoft iMedia Converter also has trial version which is totally free. There is little difference between a trial version and a full version except an "Aunsoft" watermark in output videos from the trial version. (For Windows users, please go to Aunsoft Blu-ray Video Converter Ultimate.)
Convert DVD to HD video.
The following screenshot clearly shows the process of converting DVD to HD video.
Step 1: Import source DVD disc.
Step 2: Choose output format.
Step 3: Choose output path.
Step 4: Rip and convert DVD with high quality.
Note: To adjust the output video and audio options, click "Settings" to set up the size, bitrate, frame rate, etc.
With several clicks of your mouse and little waiting time, you will get the video you need with high quality.