101 lines
2.7 KiB
Bash
Executable File
101 lines
2.7 KiB
Bash
Executable File
#!/usr/bin/env bash
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set -euo pipefail
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media_root=${1:-data}
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if ! command -v ffprobe >/dev/null 2>&1; then
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echo "ffprobe is required to validate media." >&2
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exit 2
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fi
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if [[ ! -d $media_root ]]; then
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printf 'Media directory does not exist: %s\n' "$media_root" >&2
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exit 2
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fi
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valid_count=0
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invalid_count=0
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validate_file() {
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local file=$1
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local format_name streams codec type attached_pic
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local video_count=0
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local audio_count=0
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local invalid_reason=
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if ! format_name=$(ffprobe -v error -show_entries format=format_name \
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-of default=noprint_wrappers=1:nokey=1 "$file"); then
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printf 'INVALID: %q: unreadable or corrupt MP4\n' "$file" >&2
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return 1
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fi
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if [[ ,$format_name, != *,mp4,* ]]; then
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printf 'INVALID: %q: expected an MP4 container, got %s\n' "$file" "$format_name" >&2
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return 1
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fi
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if ! streams=$(ffprobe -v error \
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-show_entries stream=codec_name,codec_type:stream_disposition=attached_pic \
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-of csv=p=0 "$file"); then
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printf 'INVALID: %q: unable to inspect streams\n' "$file" >&2
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return 1
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fi
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while IFS=, read -r codec type attached_pic; do
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case "$type" in
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video)
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if [[ $attached_pic == 1 ]]; then
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continue
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fi
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if [[ $codec != h264 ]]; then
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invalid_reason="unsupported video codec $codec"
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fi
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((video_count += 1))
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;;
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audio)
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if [[ $codec != aac ]]; then
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invalid_reason="unsupported audio codec $codec"
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fi
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((audio_count += 1))
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;;
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*)
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invalid_reason="unsupported $type track ($codec)"
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;;
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esac
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done <<< "$streams"
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if [[ -n $invalid_reason ]]; then
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printf 'INVALID: %q: %s\n' "$file" "$invalid_reason" >&2
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return 1
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fi
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if ((video_count != 1 || audio_count != 1)); then
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printf 'INVALID: %q: expected one H.264 video and one AAC audio track; found %d video and %d audio\n' \
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"$file" "$video_count" "$audio_count" >&2
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return 1
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fi
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printf 'VALID: %s\n' "$file"
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}
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while IFS= read -r -d '' file; do
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if validate_file "$file"; then
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((valid_count += 1))
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else
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((invalid_count += 1))
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fi
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done < <(find "$media_root" -type f -iname '*.mp4' -print0)
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if ((valid_count == 0)); then
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echo "No valid MP4 files were found." >&2
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exit 1
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fi
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if ((invalid_count > 0)); then
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printf 'Validation failed: %d valid, %d invalid file(s).\n' "$valid_count" "$invalid_count" >&2
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exit 1
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fi
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printf 'Validation passed: %d MP4 file(s).\n' "$valid_count"
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