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https://issues.apache.org/jira/browse/TIKA-4838?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18108789#comment-18108789
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ASF GitHub Bot commented on TIKA-4838:
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tballison merged PR #3062:
URL: https://github.com/apache/tika/pull/3062
> Expose the MP4 audio and video track codecs (audio:format, video:format)
> ------------------------------------------------------------------------
>
> Key: TIKA-4838
> URL: https://issues.apache.org/jira/browse/TIKA-4838
> Project: Tika
> Issue Type: New Feature
> Reporter: Dominik Schmidt
> Priority: Major
>
> The MP4/QuickTime parser does not expose the per-track codec identifiers.
> TikaMp4SoundHandler and TikaMp4VideoHandler read the sample-entry format
> fourcc but only use it for other purposes (audio: DRM detection; video:
> nothing).
> Add audio:format and video:format, each carrying the four-character codec
> identifier from the track's sample description (audio mp4a/alac/ac-3, video
> avc1/hev1). For protected streams (drms/enca, encv/drmi) the original codec
> is recovered from the nested frma box.
> The existing xmpDM:audioCompressor only fires for audio-typed files and
> carries the container major brand, and xmpDM:videoCompressor carries the
> compressor name (encoder string, e.g. "Lavc… libx264"), so neither gives the
> per-track codec fourcc for video/* files.
> Rounds out the per-track metadata added in TIKA-4779, TIKA-4800 and TIKA-4802.
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