ok, i developed a solution by myself…
the folowwing snippet seeks to timestamp for example:
https://meirtv.com/shiurim/244997/?time=33m27s
and if there is no “time” parameter, it will seek by fv player default (last watched etc)

// FV Player Time Parameter Support (Updated)
// Add this to your theme's functions.php or a code snippets plugin.

// --- 1. Enqueue the JavaScript Handler ---
// This script now only acts if a 'time' parameter is in the URL.
function fvpt_enqueue_scripts() {
    // Only run this on single posts and pages where videos are likely to be.
    if (is_singular()) {
        $script = '
jQuery(document).ready(function($) {
    // Get the time parameter directly from the page\'s URL.
    const urlParams = new URLSearchParams(window.location.search);
    const timeParam = urlParams.get("time");

    // CRITICAL FIX: Only run the seeking logic if a "time" parameter
    // actually exists in the URL. If it doesn\'t, this entire block is
    // skipped, allowing FV Player\'s default behavior (like "last watched") to work.
    if (timeParam) {
        // Function to parse time formats like "1h30m10s" or "90" into seconds.
        const parseTimeParam = (timeStr) => {
            if (!timeStr) return 0;
            let totalSeconds = 0;
            const regex = /(\d+)([hms])/g;
            let match;
            while ((match = regex.exec(timeStr)) !== null) {
                const value = parseInt(match[1], 10);
                const unit = match[2];
                switch(unit) {
                    case "h": totalSeconds += value * 3600; break;
                    case "m": totalSeconds += value * 60; break;
                    case "s": totalSeconds += value; break;
                }
            }
            // Fallback for plain seconds format (e.g., "?time=125")
            if (totalSeconds === 0 && /^\d+$/.test(timeStr)) {
                totalSeconds = parseInt(timeStr, 10);
            }
            return totalSeconds;
        };

        const seekTime = parseTimeParam(timeParam);

        // Only seek if the time is greater than 0.
        if (seekTime > 0) {
            const applySeek = (api) => {
                // The "ready" event ensures the video is loaded enough to seek.
                api.on("ready", function() {
                    // This small timeout ensures our seek command runs after
                    // any initial player logic.
                    setTimeout(() => {
                        api.seek(seekTime);
                    }, 150);
                });
            };

            // Hook into the FV Player API (supports V7+ and older versions).
            if (typeof flowplayer !== "undefined") {
                flowplayer((api, root) => {
                    applySeek(api);
                });
            } else if ($(".flowplayer").length) {
                $(".flowplayer").each(function() {
                    const api = $(this).data("flowplayer");
                    if (api) {
                        applySeek(api);
                    }
                });
            }
        }
    }
});
        ';
        // Use wp_add_inline_script to safely add the JavaScript.
        wp_add_inline_script('jquery-core', $script);
    }
}
add_action('wp_enqueue_scripts', 'fvpt_enqueue_scripts');


// --- 2. Add rewrite rule for pretty URLs (Optional) ---
// This allows for URLs like /shiurim/123/time/1m30s/
function fvpt_add_rewrite_rules() {
    add_rewrite_rule(
        '^shiurim/([0-9]+)/time/([0-9hms]+)/?$',
        'index.php?p=$matches[1]&time=$matches[2]', // We now use 'time' consistently.
        'top'
    );
}
add_action('init', 'fvpt_add_rewrite_rules');


// --- 3. Shortcode to easily generate time-based links ---
// Usage: [fv_time_link time="1m30s" text="Watch from 1:30"]
function fvpt_time_link_shortcode($atts) {
    $atts = shortcode_atts(array(
        'time' => '0',
        'text' => 'Watch from here',
        'class' => 'fv-time-link'
    ), $atts, 'fv_time_link');

    // Use WordPress\'s add_query_arg to safely build the URL.
    $url = add_query_arg('time', esc_attr($atts['time']), get_permalink());

    return sprintf(
        '<a href="%s">%s</a>',
        esc_url($url),
        esc_attr($atts['class']),
        esc_html($atts['text'])
    );
}
add_shortcode('fv_time_link', 'fvpt_time_link_shortcode');


// --- Helper function to get a time link programmatically ---
function fvpt_get_time_link($time = '0m00s') {
    return add_query_arg('time', $time, get_permalink());
}

i developed a chatbot ai, that answer questions and give links to specific position in videos..
so the link is generated dynamicly , and has to has the specific time to go to the specific citation time in the video

still waiting

Yes! now it works!
thanks a lot!

so how to whatch out with caches not to be blocked when it expires?

it is a israel service by server
now the problem is that it seems to work better with hls streaming like this:

[fvplayer src="https://player.vimeo.com/external/1052727248.m3u8?s=f5574914c5cee24b574e2be4c29952ddd2275b52&logging=false"]

instead of this:

[fvplayer src="https://vimeo.com/1052727248" splash="https://i.vimeocdn.com/video/1977766466-8c374b7d5f20aa2e8fb374a418a8faa2ae351ad6817d96ee0987dab38b06d145-d_1920"]

can you tell me if there are any pros or cons in using each streaming format?

dash.mediaplayer.min.js?ver=3.2.2-mod:2
GET https://vod-adaptive-ak.vimeocdn.com/exp=1739239500~acl=%2Fa7c265d2-0b34-4e…=8c953e4f~qK0xqdrh_MW-55XdXCezoOz5lUz3xMsiahUutHcO9fE&r=dXM%3D&range=0-677 403 (Forbidden)

hello
still waiting for an answer. thnaks

still waiting for answer please

thanks… now it works…
may be it should be open to choose the vertical playlist, instead of rtl/ltr dependent…

thanks

hello.
any ideas?

for me it doesnt work in sticky.
i playes the video in mobile android , scrolled down and when i go to other app the video stops playing

yes, it works. thanks!
maybe anyway i should be a good idea to add a paramater of media type in the shortcode

the source is a bunny.net mp3 file

ok, i discover the problem
i had a option in debload optimization plugin checked , wich bring to ths bug.
attached the option that make this issue:

Optimize CSS: Remove Unused -> Remove from All Stylesheets.

The description says:

WARNING: Only use if you are sure your plugins and themes dont add classes using JS. May also be enabled when delay loading all the original CSS.

i tried all the combinations… with and withouth optimeze java scrit option checked and also excluded Js you gave, but still same result…
is there a possibility to get in the site and check it ?

i will keep the example with the bug for 2 hours has it is a life site

thanks a lot!

bsd

Good idea. will try!
how to define in the legacy shortcode the format of the transcription (original or not)?

thanks

give individual viewers the ability change the size

bsd
Hello
Does it clear?
Waiting for a response

i will lsend a video showing…

bsd
Thanks martin
you are right
the format right now of the video is for example like this:
https://customer-m9lk3909e6z6e7rt.cloudflarestream.com/3c61793bbbdf709d5b26afe588ddab0e/manifest/video.m3u8

that seems to work well now.
thanks a lot!!

Hello. waiting for an answer…

also created streaming token on CF and added it in FV player settings

bsd
Great!
some nice skins should be :
horizontal:
shorturl.at/ceglV
shorturl.at/ftu68
i will send more exmaples later

hello
what does it mean “backup”?
i have 2 sources – one self hosted and th eother cloudflare streaming service.
i would like to set CF as the defaukt, and if it doesnt work, to play the self served video
Do i need the add-on?

please , waiting for answer when the issue should be solved

yes, i am using legacy fvplayer, because i create a dynamic playlist shortcode by php from my episodes playlist metafields database (thousands of videos)

please, waiting for a response

after using with success the “playlist_start” parameter, i realize now that the splash (playlist preview image) is still took from the first video image.
is there a way to make the playlist preview image to be according to “playlist_start” parameter?

YES it WORKS
AMAZING
thanks!

why this shortcode do not appear in shorcodes list?