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raspberrypi / pico-playground

BSD 3-Clause "New" or "Revised" License
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Popcorn Convertor and/or Samples #10

Closed hoglet67 closed 3 years ago

hoglet67 commented 3 years ago

Is there any possibility you could publish the video conversion tool and/or some samples for the Popcorn Media Player app in pico-playground.

This is what README.mb currently says:

This is a movie player for 30fps 320x240 movies with 44100 stereo sound, read in a custom format from SD card... it can even play backwards :-) TODO: add a link to big buck bunny in the right format TODO: add converter

Many thanks

kilograham commented 3 years ago

ah yes... i'll upload the bunny movie today, and throw together some sort of instructions for the converter soon.

kilograham commented 3 years ago

movie uploaded https://drive.google.com/file/d/1q3szTVccPZ08v_TMDxy9ZgqeOOXXwHCX/view?usp=sharing (also in the README.md which has some very basic instructions)

hoglet67 commented 3 years ago

Thanks for the Bunny example Graham.

It works, but the audio is very broken/stutterly.

Is that expected?

(This is using a Sandisk Ultra 16GB Class 10 A1 SD Card)

kilograham commented 3 years ago

not expected; let me check the latest popcorn binary. (i've never seen audio problems with bunny, but sometimes i have with another movie - in which case pausing/unpausing a couple of times usually fixes it).

kilograham commented 3 years ago

sound is good for me; did you get the sound working? I've mostly been using Samsung EVO Selects; though I have used a Sandisk in the past. (can't find it right now).

Certainly my SD testing ^ is not exhaustive, but we're not really pushing them very hard. Definitely worth trying with a different type of card though

kilograham commented 3 years ago

oh, having just done this myself, be careful you didn't slow down the video by pressing the left button... the sound will stutter here. (this again is fixed by pause/unpause to set back to normal speed)

hoglet67 commented 3 years ago

sound is good for me; did you get the sound working? I've mostly been using Samsung EVO Selects; though I have used a Sandisk in the past. (can't find it right now).

I've just tried again, and yes pausing/unpausing does resolve the sound issue.

I didn't notice this before, because I had a second source of similar (clicky) noise which I think was down to a USB ground loop

BTW, it does start stuttering again each time you reset. So this must be down to the latency of the first read from the SD Card.

kilograham commented 3 years ago

BTW, it does start stuttering again each time you reset. So this must be down to the latency of the first read from the SD Card.

yup... popcorn is by no means fool proof at this point :-)

kilograham commented 3 years ago

added converter (non trivial and requires Linux likely)