Isaac Connor 74bf0637f0 fix: restore generic decoder fallback for ffmpeg cameras ...

Extract the "use whatever decoder ffmpeg provides" logic from
FFmpeg_Input into a shared open_fallback_decoder() and call it from
FfmpegCamera, which had lost the fallback: its generic path only ran
inside the preferred-codec loop, so an empty get_decoder_data() result
failed outright instead of trying the codec's default decoder.

The dec_codecs table stays a preference list; a codec present in the
ffmpeg build but absent from the table (e.g. libopenh264 for H264) now
decodes via the fallback instead of requiring a hard-coded entry.

Add tests/zm_ffmpeg_fallback.cpp covering the fallback with a codec not
in dec_codecs (mpeg2video), the optional codec_out argument, and the
no-decoder case.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

2026-07-19 11:26:03 -04:00

3.0 KiB

Raw Blame History

View Raw