Seems like the VLC update from Raspbian broke something. Your problem seems similar to a recently reported issue here. I'm going to ask the same things to track things down

add the info requested in https://retropie.org.uk/forum/topic/3/read-this-first run the ffmpeg command to identify which video codec/format is the video file that doesn't work.

Can you upload on of the video files with the problem somewhere (Dropbox/Google Drive/etc.) to take a look at it ?

@SpudsMcToole

If you are not satisfied with the performance, try to switch the 'Synchronisation method' to 'Flexible'. With the 'Exact' method I got only 90% and choppy sound...
Under the 'Video settings' / ' Size settings' disable 'Double size/Double scan/Full screen options' and set the 'Custom resolution' to 384x272, SDL2 will do its job.

Sorry for my poor english. ;)

Turns out the only gamelist that was created was in ~/RetroPie/roms/retropie/gamelist.xml , (there was only this single one on my whole disk, and I did search for hidden files, too).
But in the retropie_setup.sh -> tools -> scraper options, I had disabled (or forgotten to enable) that the .xmls be put in their respective rom directories.
So I deleted the single gamelist and image folder (that contained metadata for >10 systems), scraped again, since I really couldn't be bothered with manually sorting metadata for >4k Roms into different folders, and this time everything was saved to the right locations!
Thank you very much for providing me with the correct locations, the problem is solved now and the thread can be closed.

@zmb187 Please add more information about your system as asked in https://retropie.org.uk/forum/topic/3/read-this-first.

What controller types ? Are you supplying enough power to the PI with a proper power source ?

@dml1783 Please add the info requested in https://retropie.org.uk/forum/topic/3/read-this-first to your topic.
What is the source of the video snaps ? Did you use a scraper to download them or added them yourself ?
Run from a command line

ffmpeg -i <path_to_video_file_with_errors>

and paste here the output to see what codec/video format is the video file.

i updated and my snaps turned blue... omxplayer is not an option for me because it forces the video to be infront of the background...

Ok thank you for that.
I just wasn't sure if the same bug was in stretch and that the documentation had not been updated, as the documentation also stated that bug before retropie moved to stretch in april.
Thanks

@mitu thank you so much for sending that over. I took a look at that at the time but ran into a couple of issues that would benefit from others' inputs as the changes to make it work don't seem to be trivial and will likely imply some changes in other areas of the code, so I'd rather not do that without others' perspective.

@jdrassa this is the issue that prompted our chat a while back, for context. I may take this on later or at least add comments to the issue that was just created so that we can discuss things there.

Thanks all.

@mitu never knew that, hmmmmmmmm. Thanks for the heads up

you're right. I was looking in the wrong partition. thank you very much

Thank you @mitu
You're a star :)

Rob

@Dtje
So how did it go? Is it going any way?

@legion28 i have the same problem, only solution is to downgrade RA version...
In my case, when a press Xbox 360 guide button, its return to emulationstation...

I tried doing the JSTEST, it detected it alright. But it still does not detect the buttons. It says 13 buttons detected but has four nulls in the end if the list which i think represent the nonfunctional buttons. The driver version is 2.1.0, is there a new one and how do i install it?0_1542835782198_48724714-04F0-45ED-9B52-1B74B2C05B8A.jpeg

Hi all! I just wanted to say that I got an answer to my issue! My particular problem was due to my using a VGA to HDMI converter to use with my old VGA monitor. What fixed my problem was to edit the config.txt file and uncomment the line "hdmi_force_unplug=1". Works perfectly now. Again, thank you all for your time.

A link to the linux sh files I've created based on MAME 0.189 listing
ssh into your pi or on the pi.
CD to rom folder
mkdir parents
mkdir clones
mkdir not-working
Then:
Bash <filename> for each of these sh files
http://s000.tinyupload.com/index.php?file_id=01047940340977029704
http://s000.tinyupload.com/index.php?file_id=51201681948640043983
http://s000.tinyupload.com/index.php?file_id=50693776412660449756