ffmpeg fails on some fragments or 503 error

[Hammer]

I'm downloading some dash videos(not encrypted and not paid) but with ffmpeg I get sometimes errors on fragments or 503 errors, how can I force ffmpeg to download the fragments that fail?
I saw that youtube-dl supports it, but I can't get to download the mp4 file(using direct link to the dash stream).
Can you point me at some documentation or suggest me a better way to achieve that ffmpeg retires downloading a fragment if it fails?
Sorry but I can get to work youtube-dl with the link since it doesn't detect any video.
Sorry if it's a noob question.

[lomero]

yt-dlp work fine.
try it, if the mistake persists, write here video link

[Hammer]

yt-dlp work fine.
try it, if the mistake persists, write here video link

Thanks I solved using yt-dlp, do you know how to choose the output names for video and audio? To avoid this "You have requested merging of multiple formats while also allowing unplayable formats to be downloaded. The formats won't be merged to prevent data corruption."
Thanks in advance.

[ElCap]

-o filename

but you can't merge 2 encrypted files without decrypting them first and yt-dlp doesn't decrypt
Edit: if the files aren't encrypted you don't need to specify

--allow-u

[Hammer]

-o filename

but you can't merge 2 encrypted files without decrypting them first and yt-dlp doesn't decrypt
Edit: if the files aren't encrypted you don't need to specify

--allow-u

Thanks, they're not encrypted, but with the output format by default it fails because of how long the link is or because of special characters?(I think)

[lomero]

@Hammer
download video. same for audio.
decrypt both.
join decrypted with ffmpeg

[Hammer]

@Hammer
download video. same for audio.
decrypt both.
join decrypted with ffmpeg

I know thanks, I was saying that I wanted to set a filename for the output, but I get issues(I know that I need to merge the two files using ffmpeg). Nevermind I'll go ahead like I tried, even if I get an error because I'm trying to set an output name when there are two files.

[ElCap]

Have you tried -o filename?
Yt-dlp should merge the files for you if they're not encrypted.

Paste the full command and error (you can blank out the identifying bits)

[Hammer]

Have you tried -o filename?
Yt-dlp should merge the files for you if they're not encrypted.

Paste the full command and error (you can blank out the identifying bits)

I use:

yt-dlp "https://link" --allow-unplayable-formats -o "video.mp4" -R "infinite" --fragment-retries "infinite"

WARNING: You have requested merging of multiple formats while also allowing unplayable formats to be downloaded. The formats won't be merged to prevent data corruption.

[ElCap]

remove --allow-unplayable-formats and run it again

[Hammer]

remove --allow-unplayable-formats and run it again

Error:

This video is DRM protected

Don't worry, thanks. It works by merging them after using ffmpeg. I'll do it like this.