How do I play a program I recorded on pv?

If you mean just the one and the rest then it was probably recorded in Extended Play mode and nothing can be done.
Otherwise please explain your issues in more detail.

Recover a Deleted Recording from Your X1 DVR

1. Press the xfinity button on your remote control.
2. Use the arrow buttons to highlight Saved.
3. Use the arrow buttons to highlight Recordings then arrow down to Recently Deleted.
4. Use the arrow buttons to select the deleted program to recover and press OK.
5. Select Recover and press OK to restore the program.

https://www.xfinity.com/support/articles/x1-recover-a-recording

Unfortunately, you can not do a programmed recording with the PV-7450 without the remote. You can do a one-touch (current channel/time) recording. To do this, use the channel buttons to select the desired channel and make sure that a tape with the record tab is in the VCR. Then press Rec/Time (the right-most button) several times to select the recording length. Press Stop to end the recording.

To do a programmed recording, you need the Prog button on the remote. (You may be able to find a universal remote that matches the function if you try enough of the codes for Panasonic VCRs.) There is no matching button on the VCR front-panel.

This is shown in the manual for the Panasonic Omnivision PV-7450, https://www.manualslib.com/manual/305336/Panasonic-Omnivision-Pv-7200.html#product-Omnivision%20PV-7450 . See page 16 for the One-time recording feature. See page 18 for timed recording. I wish that I had better news for you.

Cindy Wells

1: Get a movie and some popcorn.
2: Make sure the DVD player and the tv are turned on.
3: Push the button on either the front of the player or on the remote to open the player door to load the disc.
4. Put the disc on the tray that pops out
5. Push the same button pushed previously to close the door
6. Enjoy the movie

To play a microphone recording file, press the Menu button once, and then push the Menu button to the right once, and now you should read the message of VOICE appearing on the Display. Press the Menu button again, and then use the Menu button to select a desired microphone recording file by pushing the Menu button to the right or to the left. Once the desired microphone recording file is selected, press the "play/pause" button to start playing the file.
this is all from the manual hope this helps

what you will need to do to correct this problem is delete the series recording. in your list (push list button) highlight the program you wish to delete, push select go to "rec. series" press select. and delete ALL push select... get "ok" message, select again. and reset receiver on front panel of receiver there is a door you can open, hit the red reset button and then setup your series record again by going into the guide and pressing record twice. this will fix the problem by deleting ALL of the series record and resetting, and resetting up series record

I had the same problem. In desperation, I picked up my trusty can of compressed air and aimed a few shots into the recorder/playback mechanism. Worked like charm.

Look for a green button marked LIST almost in the center of the remote. If the List button doesn't work, be sure the remote is in the CBL mode (press the CBL button right under Master Power once)

When you get the list of recorded shows up, use the up and down arrow keys to highlight the show you want, then hit the OK/SELECT button. That should bring up another dialog box, look for Play and press the OK/SELECT button again to start.

let the camera sit alone for About 20 min,so that the camcorder automatically turned off. I turned it off, then back on and did not receive the reset button prompt.
if that doesn't work unplug the battery and all power and plug back in.

Videos with sound is possible or you can record sound memos as well

Recording and Playing Sound Memos
You can record and play back sound memos for your photos while you view them on the LCD screen.
1. Turn the Mode dial to playback mode.
2. Press the MENU button. Playback Menu 1 is displayed.
3. Select Sound Memo by using the u d buttons, then press the r button.
4. Press the OK button and then start recording.
5. When you are finished recording, press the OK button. You can play or delete the sound memo or record
a new memo.
6. Press the MENU button twice to exit the menu.
When you play back a photo that includes a sound memo, the icon appears on the screen. Press the OK
button to play the sound.
Note:
You must have at least one photo saved to record a sound memo.