@Flexo55 Sure it is possible. Just think about your requirements.

Which input formats (16:9, 4:3, 5:4, ...) and resolutions (1920x1080, 800x600) should be accepted on the HDMI side? Which output standard should be supported? (NTSC/PAL or both?) Which framerate you need for your CRT (50Hz/60Hz/...)? Shall it support conversion options when converting e.g. from 16:9 (in) to 4:3 (out)? Do you also want HDMI audio looped through the device or will you use the Pi's headphone jack or USB audio? Do you want extra filters supported by the device, e.g. blurring, scanline modification, ...?

This might be one device as example: https://www.startech.com/en-ch/audio-video-products/hd2vid2 (obviously you need a Micro HDMI to HDMI adapter)

I would also ask or research in some AV forums on recommended products for your project and your requirements.

@mitu Oh Sorry!!
My english is very bad jaja.

So.. im gonna to try the scripts and when i have a switch im gonna try it connecting it to ha 5V and ground GPIO.

Thank you so much!

Have just published this - https://retropie.org.uk/2019/07/composite-out-broken-on-retropie-4-5/

@Sakitoshi I didn't know you could use the xbox 360 e av cable. Heck i didn't even know how it looks like until now. But it all makes sense.

That you for the heads up!

@Deityfierezy you are better for now with the 3+

Thanks :)

It seems that tvservice -s outputs the info to egrep so I simply addedthe following lines to rc.local before exit 0

if (/usr/bin/tvservice -s | /bin/egrep 'HDMI|DVI') ; then /home/pi/hdmi else /home/pi/rca fi

Simple and neat!

@janlopes really? Where are all the details of your setup? you even say you have tried things? What things? What did you edit? Which file? What did you type? Did you enable audio out properly? What do you have the volume level set to? What emulators have no sound? Which games? Which image? Official? Or a pre-loaded one? To enable others to help you please go back and read this

https://retropie.org.uk/forum/topic/3/read-this-first

When you "have done" your post will contain the answers. Then and only then is it possible to even start to assist.

I picked up one of these cables from a Goodwill for $0.50 but I couldn't get it to work on my older 32" 720p HDTV. I guess I should note that I have an RCA switch box that I was running through (so I can switch between my Blu-ray player, Wii, GameCube or PSX on that TV). There's probably something I needed to put in /boot/config.txt. I didn't really try very hard because it already works great with my HDMI cable.

OK I found solution by myself and here it is.I just need to add this lines in config.txt .i hope this will be useful

sdtv_mode=2
sdtv_aspect=1
sdtv_disable_colourburst=0
framebuffer_width=640
framebuffer_height=480
overscan_left=27
overscan_right=0
overscan_top=0
overscan_bottom=0

@BuZz thanks. I'll try them all. Hopefully one of them will fix the problem.

@edmaul69 That looks awesome!

@Jakob-Holz glad to see it is working for you. Unfortunately so many guides tell you to add lines to the bottom of the config but fail to mention it is already on the page somewhere else and may or may not be # hashtagged out.

@battlecat

A normal pi (not zero) supports analog over CVBS but its interlace so it will look shimmery.

I believe it may be possible to get it to output 25p over HDMI, convert to VGA, then convert to RGB on scart lead using a cable like this http://www.ebay.co.uk/itm/Cable-VGA-RGB-ARCADEVGA-SCART-CON-JACK-SONIDO-EUROCONECTOR-JAMMA-ARCADE-/131577748414?hash=item1ea2a51bbe