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https://issues.apache.org/jira/browse/TIKA-4800?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18100437#comment-18100437
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ASF GitHub Bot commented on TIKA-4800:
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dschmidt opened a new pull request, #2982:
URL: https://github.com/apache/tika/pull/2982
JIRA: https://issues.apache.org/jira/browse/TIKA-4800
metadata-extractor's `Mp4VideoDirectory` and `Mp4SoundDirectory` already
populate the frame rate, channel count and audio sample size, but `MP4Parser`
only mapped a subset. This forwards the three: `video:frame-rate` (a new
`Video` property, since `XMPDM.VIDEO_FRAME_RATE` is a closed-choice text
field), `audio:channels` (the raw count; `XMPDM.AUDIO_CHANNEL_TYPE` only
distinguishes Mono/Stereo) and `audio:bits-per-sample`.
One property per commit. Tests assert channels/bits against the existing
`testMP4.m4a` (2 channels, 16 bits) and the frame rate against a new 1.8 KB
ffmpeg-generated clip (`testMP4Video.mp4`, 10 fps).
> Expose the MP4 frame rate, audio channel count and audio sample size
> --------------------------------------------------------------------
>
> Key: TIKA-4800
> URL: https://issues.apache.org/jira/browse/TIKA-4800
> Project: Tika
> Issue Type: New Feature
> Reporter: Dominik Schmidt
> Priority: Major
>
> metadata-extractor's Mp4VideoDirectory and Mp4SoundDirectory already populate
> TAG_FRAME_RATE, TAG_NUMBER_OF_CHANNELS and TAG_AUDIO_SAMPLE_SIZE, but
> MP4Parser only maps a subset of them. Surface these three: the frame rate,
> the raw audio channel count (today only the Mono/Stereo
> xmpDM:audioChannelType is emitted, which cannot represent more than two
> channels), and the audio sample size (bits per sample).
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