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Merge pull request #14809 from lostb1t/fix/subtitleencoder
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Browse Source 
fix: prevent premature disposal of HTTP subtitle streams
This commit is contained in:
Niels van Velzen
2026-01-26 12:00:14 +01:00
committed by GitHub
parent 92f3c8cf15 7f1a0ff6fc
commit 360b6bcce1
2 changed files with 44 additions and 40 deletions
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80
MediaBrowser.MediaEncoding/Subtitles/SubtitleEncoder.cs
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@@ -172,23 +172,25 @@ namespace MediaBrowser.MediaEncoding.Subtitles
private async Task<Stream> GetSubtitleStream(SubtitleInfo fileInfo, CancellationToken cancellationToken)
{
if (fileInfo.IsExternal)
if (fileInfo.Protocol == MediaProtocol.Http)
{
var stream = await GetStream(fileInfo.Path, fileInfo.Protocol, cancellationToken).ConfigureAwait(false);
await using (stream.ConfigureAwait(false))
var result = await DetectCharset(fileInfo.Path, fileInfo.Protocol, cancellationToken).ConfigureAwait(false);
var detected = result.Detected;
if (detected is not null)
{
var result = await CharsetDetector.DetectFromStreamAsync(stream, cancellationToken).ConfigureAwait(false);
var detected = result.Detected;
stream.Position = 0;
_logger.LogDebug("charset {CharSet} detected for {Path}", detected.EncodingName, fileInfo.Path);
if (detected is not null)
using var stream = await _httpClientFactory.CreateClient(NamedClient.Default)
.GetStreamAsync(new Uri(fileInfo.Path), cancellationToken)
.ConfigureAwait(false);
await using (stream.ConfigureAwait(false))
{
_logger.LogDebug("charset {CharSet} detected for {Path}", detected.EncodingName, fileInfo.Path);
using var reader = new StreamReader(stream, detected.Encoding);
var text = await reader.ReadToEndAsync(cancellationToken).ConfigureAwait(false);
using var reader = new StreamReader(stream, detected.Encoding);
var text = await reader.ReadToEndAsync(cancellationToken).ConfigureAwait(false);
return new MemoryStream(Encoding.UTF8.GetBytes(text));
return new MemoryStream(Encoding.UTF8.GetBytes(text));
}
}
}
@@ -218,7 +220,7 @@ namespace MediaBrowser.MediaEncoding.Subtitles
};
}
var currentFormat = (Path.GetExtension(subtitleStream.Path) ?? subtitleStream.Codec)
var currentFormat = subtitleStream.Codec ?? Path.GetExtension(subtitleStream.Path)
.TrimStart('.');
// Handle PGS subtitles as raw streams for the client to render
@@ -941,42 +943,44 @@ namespace MediaBrowser.MediaEncoding.Subtitles
.ConfigureAwait(false);
}
var stream = await GetStream(path, mediaSource.Protocol, cancellationToken).ConfigureAwait(false);
await using (stream.ConfigureAwait(false))
var result = await DetectCharset(path, mediaSource.Protocol, cancellationToken).ConfigureAwait(false);
var charset = result.Detected?.EncodingName ?? string.Empty;
// UTF16 is automatically converted to UTF8 by FFmpeg, do not specify a character encoding
if ((path.EndsWith(".ass", StringComparison.Ordinal) || path.EndsWith(".ssa", StringComparison.Ordinal) || path.EndsWith(".srt", StringComparison.Ordinal))
&& (string.Equals(charset, "utf-16le", StringComparison.OrdinalIgnoreCase)
|| string.Equals(charset, "utf-16be", StringComparison.OrdinalIgnoreCase)))
{
var result = await CharsetDetector.DetectFromStreamAsync(stream, cancellationToken).ConfigureAwait(false);
var charset = result.Detected?.EncodingName ?? string.Empty;
// UTF16 is automatically converted to UTF8 by FFmpeg, do not specify a character encoding
if ((path.EndsWith(".ass", StringComparison.Ordinal) || path.EndsWith(".ssa", StringComparison.Ordinal) || path.EndsWith(".srt", StringComparison.Ordinal))
&& (string.Equals(charset, "utf-16le", StringComparison.OrdinalIgnoreCase)
|| string.Equals(charset, "utf-16be", StringComparison.OrdinalIgnoreCase)))
{
charset = string.Empty;
}
_logger.LogDebug("charset {0} detected for {Path}", charset, path);
return charset;
charset = string.Empty;
}
_logger.LogDebug("charset {0} detected for {Path}", charset, path);
return charset;
}
private async Task<Stream> GetStream(string path, MediaProtocol protocol, CancellationToken cancellationToken)
private async Task<DetectionResult> DetectCharset(string path, MediaProtocol protocol, CancellationToken cancellationToken)
{
switch (protocol)
{
case MediaProtocol.Http:
{
using var response = await _httpClientFactory.CreateClient(NamedClient.Default)
.GetAsync(new Uri(path), cancellationToken)
.ConfigureAwait(false);
return await response.Content.ReadAsStreamAsync(cancellationToken).ConfigureAwait(false);
}
{
using var stream = await _httpClientFactory
.CreateClient(NamedClient.Default)
.GetStreamAsync(new Uri(path), cancellationToken)
.ConfigureAwait(false);
return await CharsetDetector.DetectFromStreamAsync(stream, cancellationToken).ConfigureAwait(false);
}
case MediaProtocol.File:
return AsyncFile.OpenRead(path);
{
return await CharsetDetector.DetectFromFileAsync(path, cancellationToken)
.ConfigureAwait(false);
}
default:
throw new ArgumentOutOfRangeException(nameof(protocol));
throw new ArgumentOutOfRangeException(nameof(protocol), protocol, "Unsupported protocol");
}
}