https://itoschum.me/tags/mpv/ Recent content in Mpv on Ito Archives Hugo en-us Mon, 09 Feb 2026 22:42:00 -0500 https://itoschum.me/logs/log_17/ Mon, 09 Feb 2026 22:42:00 -0500 https://itoschum.me/logs/log_17/ <h2 id="introduction">Introduction</h2> <p>Bilibili provides Danmaku in an XML format that mpv cannot natively render. Furthermore, Bilibili&rsquo;s AI subtitles often use non-standard language tags (like ai-zh), which can lead to &ldquo;null&rdquo; tracks or rendering errors in older mpv kernels (like the one used in IINA).</p> <p>Thankfully, <code>yt-dlp</code> allows us to extract and download these Danmaku and AI subtitles; <code>danmaku2ass</code>(deveoped by <a href="https://github.com/m13253">@m13253</a>) provides a brilliant solution to convert XML files to ASS subtitles.</p> https://itoschum.me/logs/log_09/ Mon, 20 Oct 2025 01:40:00 -0400 https://itoschum.me/logs/log_09/ <h2 id="issue-description">Issue Description</h2> <p>When using <code>mpv</code> to play videos from Bilibili, users may encounter issues where <code>mpv</code> fails to pass cookies to <code>yt-dlp</code> correctly, regardless of whether the cookies are already in Netscape format, leading to error messages like the following:</p> <div class="highlight"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;-webkit-text-size-adjust:none;"><code class="language-bash" data-lang="bash"><span style="display:flex;"><span>→ mpv --cookies-file<span style="color:#f92672">=</span><span style="color:#e6db74">&#34;~/bilibili_cookies.txt&#34;</span> --ytdl-raw-options<span style="color:#f92672">=</span>format<span style="color:#f92672">=</span>100028+30280 https://www.bilibili.com/video/BV1HMH7z4ES4 </span></span><span style="display:flex;"><span><span style="color:#f92672">[</span>ytdl_hook<span style="color:#f92672">]</span> ERROR: <span style="color:#f92672">[</span>BiliBili<span style="color:#f92672">]</span> BV1HMH7z4ES4: Requested format is not available. Use --list-formats <span style="color:#66d9ef">for</span> a list of available formats </span></span><span style="display:flex;"><span><span style="color:#f92672">[</span>ytdl_hook<span style="color:#f92672">]</span> youtube-dl failed: unexpected error occurred </span></span><span style="display:flex;"><span>Failed to recognize file format. </span></span></code></pre></div><p>The format <code>100028+30280</code> is a valid format on Bilibili, but only extractable when the user is logged in, which requires the correct cookies to be passed to <code>yt-dlp</code>, which is the default backend for <code>mpv</code> to handle online video playback.</p>