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Merge pull request #3216 from rotvel/feature/ffmpeg-version-check
Try harder at detecting ffmpeg version and enable the validation
This commit is contained in:
commit
eda29dbccb
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@ -87,7 +87,19 @@ namespace MediaBrowser.MediaEncoding.Encoder
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"hevc_videotoolbox"
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};
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// Try and use the individual library versions to determine a FFmpeg version
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// These are the library versions that corresponds to our minimum ffmpeg version 4.x according to the version table below
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private static readonly IReadOnlyDictionary<string, Version> _ffmpegMinimumLibraryVersions = new Dictionary<string, Version>
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{
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{ "libavutil", new Version(56, 14) },
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{ "libavcodec", new Version(58, 18) },
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{ "libavformat", new Version(58, 12) },
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{ "libavdevice", new Version(58, 3) },
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{ "libavfilter", new Version(7, 16) },
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{ "libswscale", new Version(5, 1) },
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{ "libswresample", new Version(3, 1) },
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{ "libpostproc", new Version(55, 1) }
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};
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// This lookup table is to be maintained with the following command line:
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// $ ffmpeg -version | perl -ne ' print "$1=$2.$3," if /^(lib\w+)\s+(\d+)\.\s*(\d+)/'
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private static readonly IReadOnlyDictionary<string, Version> _ffmpegVersionMap = new Dictionary<string, Version>
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@ -156,32 +168,36 @@ namespace MediaBrowser.MediaEncoding.Encoder
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// Work out what the version under test is
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var version = GetFFmpegVersion(versionOutput);
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_logger.LogInformation("Found ffmpeg version {0}", version != null ? version.ToString() : "unknown");
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_logger.LogInformation("Found ffmpeg version {Version}", version != null ? version.ToString() : "unknown");
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if (version == null)
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{
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if (MinVersion != null && MaxVersion != null) // Version is unknown
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if (MaxVersion != null) // Version is unknown
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{
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if (MinVersion == MaxVersion)
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{
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_logger.LogWarning("FFmpeg validation: We recommend ffmpeg version {0}", MinVersion);
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_logger.LogWarning("FFmpeg validation: We recommend version {MinVersion}", MinVersion);
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}
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else
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{
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_logger.LogWarning("FFmpeg validation: We recommend a minimum of {0} and maximum of {1}", MinVersion, MaxVersion);
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_logger.LogWarning("FFmpeg validation: We recommend a minimum of {MinVersion} and maximum of {MaxVersion}", MinVersion, MaxVersion);
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}
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}
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else
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{
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_logger.LogWarning("FFmpeg validation: We recommend minimum version {MinVersion}", MinVersion);
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}
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return false;
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}
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else if (MinVersion != null && version < MinVersion) // Version is below what we recommend
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else if (version < MinVersion) // Version is below what we recommend
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{
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_logger.LogWarning("FFmpeg validation: The minimum recommended ffmpeg version is {0}", MinVersion);
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_logger.LogWarning("FFmpeg validation: The minimum recommended version is {MinVersion}", MinVersion);
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return false;
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}
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else if (MaxVersion != null && version > MaxVersion) // Version is above what we recommend
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{
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_logger.LogWarning("FFmpeg validation: The maximum recommended ffmpeg version is {0}", MaxVersion);
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_logger.LogWarning("FFmpeg validation: The maximum recommended version is {MaxVersion}", MaxVersion);
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return false;
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}
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@ -197,13 +213,12 @@ namespace MediaBrowser.MediaEncoding.Encoder
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/// <summary>
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/// Using the output from "ffmpeg -version" work out the FFmpeg version.
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/// For pre-built binaries the first line should contain a string like "ffmpeg version x.y", which is easy
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/// to parse. If this is not available, then we try to match known library versions to FFmpeg versions.
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/// If that fails then we use one of the main libraries to determine if it's new/older than the latest
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/// we have stored.
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/// to parse. If this is not available, then we try to match known library versions to FFmpeg versions.
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/// If that fails then we test the libraries to determine if they're newer than our minimum versions.
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/// </summary>
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/// <param name="output">The output from "ffmpeg -version".</param>
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/// <returns>The FFmpeg version.</returns>
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internal static Version GetFFmpegVersion(string output)
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internal Version GetFFmpegVersion(string output)
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{
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// For pre-built binaries the FFmpeg version should be mentioned at the very start of the output
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var match = Regex.Match(output, @"^ffmpeg version n?((?:[0-9]+\.?)+)");
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@ -214,37 +229,87 @@ namespace MediaBrowser.MediaEncoding.Encoder
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}
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else
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{
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// Create a reduced version string and lookup key from dictionary
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var reducedVersion = GetLibrariesVersionString(output);
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if (!TryGetFFmpegLibraryVersions(output, out string versionString, out IReadOnlyDictionary<string, Version> versionMap))
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{
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_logger.LogError("No ffmpeg library versions found");
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// Try to lookup the string and return Key, otherwise if not found returns null
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return _ffmpegVersionMap.TryGetValue(reducedVersion, out Version version) ? version : null;
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return null;
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}
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// First try to lookup the full version string
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if (_ffmpegVersionMap.TryGetValue(versionString, out Version version))
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{
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return version;
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}
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// Then try to test for minimum library versions
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return TestMinimumFFmpegLibraryVersions(versionMap);
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}
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}
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private Version TestMinimumFFmpegLibraryVersions(IReadOnlyDictionary<string, Version> versionMap)
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{
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var allVersionsValidated = true;
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foreach (var minimumVersion in _ffmpegMinimumLibraryVersions)
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{
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if (versionMap.TryGetValue(minimumVersion.Key, out var foundVersion))
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{
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if (foundVersion >= minimumVersion.Value)
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{
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_logger.LogInformation("Found {Library} version {FoundVersion} ({MinimumVersion})", minimumVersion.Key, foundVersion, minimumVersion.Value);
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}
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else
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{
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_logger.LogWarning("Found {Library} version {FoundVersion} lower than recommended version {MinimumVersion}", minimumVersion.Key, foundVersion, minimumVersion.Value);
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allVersionsValidated = false;
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}
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}
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else
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{
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_logger.LogError("{Library} version not found", minimumVersion.Key);
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allVersionsValidated = false;
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}
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}
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return allVersionsValidated ? MinVersion : null;
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}
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/// <summary>
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/// Grabs the library names and major.minor version numbers from the 'ffmpeg -version' output
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/// and condenses them on to one line. Output format is "name1=major.minor,name2=major.minor,etc.".
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/// </summary>
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/// <param name="output">The 'ffmpeg -version' output.</param>
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/// <returns>The library names and major.minor version numbers.</returns>
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private static string GetLibrariesVersionString(string output)
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private static bool TryGetFFmpegLibraryVersions(string output, out string versionString, out IReadOnlyDictionary<string, Version> versionMap)
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{
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var rc = new StringBuilder(144);
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foreach (Match m in Regex.Matches(
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var sb = new StringBuilder(144);
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var map = new Dictionary<string, Version>();
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foreach (Match match in Regex.Matches(
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output,
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@"((?<name>lib\w+)\s+(?<major>[0-9]+)\.\s*(?<minor>[0-9]+))",
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RegexOptions.Multiline))
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{
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rc.Append(m.Groups["name"])
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sb.Append(match.Groups["name"])
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.Append('=')
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.Append(m.Groups["major"])
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.Append(match.Groups["major"])
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.Append('.')
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.Append(m.Groups["minor"])
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.Append(match.Groups["minor"])
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.Append(',');
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var str = $"{match.Groups["major"]}.{match.Groups["minor"]}";
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var version = Version.Parse(str);
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map.Add(match.Groups["name"].Value, version);
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}
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return rc.Length == 0 ? null : rc.ToString();
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versionString = sb.ToString();
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versionMap = map;
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return sb.Length > 0;
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}
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private IEnumerable<string> GetHwaccelTypes()
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@ -196,9 +196,6 @@ namespace MediaBrowser.MediaEncoding.Encoder
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_logger.LogWarning("FFmpeg: {Location}: Failed version check: {Path}", location, path);
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}
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// ToDo - Enable the ffmpeg validator. At the moment any version can be used.
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rc = true;
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_ffmpegPath = path;
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EncoderLocation = location;
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}
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@ -13,7 +13,8 @@ namespace Jellyfin.MediaEncoding.Tests
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[ClassData(typeof(GetFFmpegVersionTestData))]
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public void GetFFmpegVersionTest(string versionOutput, Version? version)
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{
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Assert.Equal(version, EncoderValidator.GetFFmpegVersion(versionOutput));
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var val = new EncoderValidator(new NullLogger<EncoderValidatorTests>());
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Assert.Equal(version, val.GetFFmpegVersion(versionOutput));
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}
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[Theory]
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@ -22,7 +23,7 @@ namespace Jellyfin.MediaEncoding.Tests
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[InlineData(EncoderValidatorTestsData.FFmpegV42Output, true)]
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[InlineData(EncoderValidatorTestsData.FFmpegV414Output, true)]
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[InlineData(EncoderValidatorTestsData.FFmpegV404Output, true)]
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[InlineData(EncoderValidatorTestsData.FFmpegGitUnknownOutput, false)]
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[InlineData(EncoderValidatorTestsData.FFmpegGitUnknownOutput, true)]
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public void ValidateVersionInternalTest(string versionOutput, bool valid)
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{
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var val = new EncoderValidator(new NullLogger<EncoderValidatorTests>());
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@ -38,7 +39,7 @@ namespace Jellyfin.MediaEncoding.Tests
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yield return new object?[] { EncoderValidatorTestsData.FFmpegV42Output, new Version(4, 2) };
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yield return new object?[] { EncoderValidatorTestsData.FFmpegV414Output, new Version(4, 1, 4) };
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yield return new object?[] { EncoderValidatorTestsData.FFmpegV404Output, new Version(4, 0, 4) };
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yield return new object?[] { EncoderValidatorTestsData.FFmpegGitUnknownOutput, null };
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yield return new object?[] { EncoderValidatorTestsData.FFmpegGitUnknownOutput, new Version(4, 0) };
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}
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IEnumerator IEnumerable.GetEnumerator() => GetEnumerator();
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