People who try to use Handbrake to rip DVD to MP4 often encouter the following issues:
"I'm not very skillyful at using Handbrake so I need some helps. I try to ripped 720x480 VOBs with a DVD Decrypter. After that, I use Handbrake to convert the large VOB files into a more small file size MP4 files. However, what really frustrated me is that when I check the "Keep Aspect Ratio", it locks the dimensions to 720x304."
Analysis: For file size consideration, AVI is more size-friendly when compared to MP4. The problem is that Handbrake has no AVI output option. Although Handbrake allows you to output MKV container file. However, there is no obvious in the output file quality and file size when encoding H.264 with MKV or MP4.
Fix Handbrake Rip DVD with Aspect Ratio Distorted Issue
If Handbrake ripping DVD distorted issue is not caused by the third-party DVD Decrypter software, then you can fix this issue with the following ways.
Solution 1: Adjust output picture settings in Handbrake
Lauch Handbrake on your computer, click the "Picture" tab, from "Anamorphic" drop-down list, select "Strict" mode, then the output video will strictly follow with the original file size. If the output file resolution is still not correct, then the problem is definitely caused by the DVD Decrypter software.
Solution 2: Manually set output frame size in Handbrake.
When encoding video from DVD or a VIDEO_TS folder, Handbrake would spot the mismatch (2.37:1 stream vs. 1.78:1 container) and would defer to the container's setting. If you're set on using anamorphic none, disable "keep aspect ratio" (since the reported PAR is wrong) and manually set the frame size to 720x400.
Solution 3: Find a Handbrake alternative
If above listed solutions still can't address your problem, then the best way is to find a Handbrake alternative. Here, you are highly recommended to use Pavtube DVDAid (best DVD Ripper Review), which not only helps you to rip commercial DVD with copy protection and region code to various popular file formats including AVI, WMV, MP4, MOV, MKV, FLV, etc with the compression codec of MPEG-1, MPEG-2, MPEG-4, H.264, H.265, Divx, Xvid, DV, VC-1, WMV2, etc.
What's worth mentioning here is the "Crop" function offered by the program, which not only allows you to keep output original aspect ratio, but also allows you to produce a cropped aspect ratio, 16:9, 5:4, 4:3, 3:2 and 2:1 from the original apsect ratio.
For Mac users, you can switch to download Pavtube DVDAid for Mac to rip DVD with correct aspect ratio.
How to Fix Handbrake Rip DVD Distorted Issue with Handbrake Alternative?
Step 1: Load DVD disc into the program.
Insert your DVD into the optical drive on your computer, start the program, on the main interface, click "File" > "Load from disc" to load DVD disc into the program, you can also add Video_TS folder or IFO/Image file into the program.
Step 2: Specify output file format.
Click "Format" bar, from its drop-down list, select one of your desired file format to output, as the DVD disc usually has a standard file resolution, therefore, you can output a device compatible "MPEG-4 Movie(*.mp4)" under "Common Video" main category as the best digital file format for saving DVD to.
Step 3: Keep output aspect ratio.
Select an item on the main interface to activate the "Video Editor" function, then click the pencial like icon on the top tool bar to open the "Video Editor" window, navigate to and click the "Crop" tab, in the right panel of the program, click to switch to advanced mode. Click the "lock" icon to enable "Keep Ratio" option, to keep original aspect ratio, make sure the "Display aspect ratio" and the "Size (pix)" in "Settings" option are all set as "Original".
Tips: If you want to keep the cropped aspect ratio, Pavtube software offers several aspect ratios for you to choose from, including 16:10, 16:9, 5:4, 4:3, 3:2, and 2:1.
Step 4: Start the DVD disc ripping process.
After all settings is completed, hit right-bottom "Convert" button to begin to strart ripping DVD to your desired file format with original output aspect ratio.
When the ripping is finished, click "Open Output Folder" button on the main interface to pop out the folder with converted files, then feel free to watch the converted DVD movies on your computer, smartphone, tablets, TVs, etc.