←back to thread

Mpv – A free, open-source, and cross-platform media player

(mpv.io)
1113 points Bluestein | 3 comments | 17 Aug 24 18:56 UTC | HN request time: 0.552s | source
Show context
lairv ◴[17 Aug 24 21:38 UTC] No.41278203[source]▶
I use it to inspect video frames by frames, particularly being able to go back one frame. VLC doesn't support it, this thread about the feature is hilarious https://forum.videolan.org/viewtopic.php?t=120627
replies(19): >>41278382 #>>41278499 #>>41278639 #>>41278719 #>>41279342 #>>41279364 #>>41279561 #>>41279827 #>>41279842 #>>41279920 #>>41280125 #>>41281214 #>>41281733 #>>41282953 #>>41283275 #>>41284169 #>>41287180 #>>41289348 #>>41289743 #
efilife ◴[17 Aug 24 22:24 UTC] No.41278499[source]▶
VLC is pretty bad and it shows the more you use it.

It doesn't let the audio clip/exceed safe volumes and always applies some sort of a limiter, even if it's disabled everywhere in the settings. Try using an EQ on a bass-heavy track and see that it's limited.

Try jumping back multiple times in a song at its beginning, and it will play in lower pitch.

replies(3): >>41279346 #>>41279495 #>>41282325 #
user3939382 ◴[18 Aug 24 01:40 UTC] No.41279495[source]▶
That strikes me as such a strange statement, I’ve always considered it to be among the most impressive OSS projects out there. It tackles enormous complexity, works everywhere, and has a trove of a million hidden features. For example, I use it to headless play streams from CLI.
replies(5): >>41279578 #>>41279683 #>>41280622 #>>41280864 #>>41280885 #
opan ◴[18 Aug 24 02:02 UTC] No.41279578[source]▶
If you enter video-related enthusiast scenes, such as fansubbed anime releases, mpv is recommended over anything else across the board. There are releases that break in VLC, and mpv is usually first to support new features. It also has particularly good defaults in terms of good and accurate playback, so where you might see some people say "install mpc-hc and these scripts and change these settings", with mpv it's just "use mpv". mpv is extremely configurable on top of great defaults also. Setting default audio and sub languages in order of your preference (such as enm before eng and en if you prefer honorifics tracks) is a common tweak.

I thought VLC was awesome while growing up, and at the time it probably was compared to Windows Media Player and such. I remember a common bit of praise was that it supported more types of video files. I haven't really run into anything mpv won't play (I even use it when an image I saved ends up as .html for some reason and then use the info screen to determine the real extension it should be so I can rename it), but also I'm guessing we've standardized more on codecs and containers these days which doesn't hurt.

replies(2): >>41281339 #>>41284652 #
latexr ◴[18 Aug 24 09:55 UTC] No.41281339[source]▶
> I even use it when an image I saved ends up as .html for some reason and then use the info screen to determine the real extension it should be so I can rename it

If you’re on Linux on macOS, you’ll have access to the `file` command-line tool which can do it effectively. In a couple of lines of shell scripting you can even have it auto-change the extension.

https://en.wikipedia.org/wiki/File_(command)

replies(1): >>41281394 #
1. opan ◴[18 Aug 24 10:11 UTC] No.41281394[source]▶
I had someone try to tell me this or some similar alternative method once, but for this particular use-case my method seemed faster. Usually I'm viewing the dir with the file in ranger, hit r (shortcut for :open_with ), type mpv, enter, I in mpv for info, q to quit, a in ranger to rename the file with old name pretyped in. It's a pretty smooth workflow. Assuming I start from the same place in ranger I have to press colon and type `shell -w file %s` and hit enter which may or may not be faster but I think is more keystrokes. I could bind it to a key in ranger if I found an open one and then that might be better. It's sometimes weeks between instances of the mis-saved images or else I might've tried harder to optimize this. The shell script idea is neat.
replies(2): >>41281935 #>>41283769 #
2. latexr ◴[18 Aug 24 12:27 UTC] No.41281935[source]▶
> The shell script idea is neat.

Could be something as simple as:

  file_path="${1}"
  mime="$(file --mime-type --brief "${file_path}")"
  ext="${mime#image/}"
  mv "${file_path}" "${file_path%.*}.${ext}"
That does no checks (e.g. is the file an image) and may not work on something on something like a video, but it’ll do for common image types such as png, jpeg, webp, heic, gif…
3. amiga386 ◴[18 Aug 24 17:30 UTC] No.41283769[source]▶
Personally I use a shell script to do it automatically for me... with "file":

    #!/bin/bash
    # Usage: fix-extensions <media file(s)>
    # Renames the files to consistent file extensions based on content

    for file in "$@"; do
        [ -f "$file" ] || continue
        dir=$(dirname "$file")
        name=$(basename "$file")
        prefix="${name%.*}"
        ext="${name##*.}"

        magic=$(file -b "$file")
        newext=""
        case "$magic" in
        *"Apple QuickTime movie"*)        newext=mov;;
        "ISO Media, Apple iTunes Video"*) newext=mp4;;
        "ISO Media, MP4"*)                newext=mp4;;
        "ISO Media, MPEG-4 (.MP4)"*)      newext=mp4;;
        "Macromedia Flash data"*)         newext=swf;;
        "Macromedia Flash Video")         newext=flv;;
        "Matroska data")                  newext=mkv;;
        "Microsoft ASF"*)                 newext=wmv;;
        "MPEG sequence"*)                 newext=mpeg;;
        "Ogg data, OGM video"*)           newext=ogm;;
        "RealMedia file")                 newext=rm;;
        "RIFF "*" data, AVI,"*)           newext=avi;;
        "WebM")                           newext=webm;;
        esac

        if [ -z "$newext" ]; then
            echo >&2 "$file: not renaming, unknown extension for type '$magic'"
        elif [ "$ext" != "$newext" ]; then
            mv -v "$file" "$dir/$prefix.$newext"
        fi
    done