init

2026-09-27 15:55:38 +08:00
commit 1b6f2e6831
14 changed files with 1379 additions and 0 deletions
@@ -0,0 +1,100 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+media_root=${1:-data}
+
+if ! command -v ffprobe >/dev/null 2>&1; then
+    echo "ffprobe is required to validate media." >&2
+    exit 2
+fi
+
+if [[ ! -d $media_root ]]; then
+    printf 'Media directory does not exist: %s\n' "$media_root" >&2
+    exit 2
+fi
+
+valid_count=0
+invalid_count=0
+
+validate_file() {
+    local file=$1
+    local format_name streams codec type attached_pic
+    local video_count=0
+    local audio_count=0
+    local invalid_reason=
+
+    if ! format_name=$(ffprobe -v error -show_entries format=format_name \
+        -of default=noprint_wrappers=1:nokey=1 "$file"); then
+        printf 'INVALID: %q: unreadable or corrupt MP4\n' "$file" >&2
+        return 1
+    fi
+
+    if [[ ,$format_name, != *,mp4,* ]]; then
+        printf 'INVALID: %q: expected an MP4 container, got %s\n' "$file" "$format_name" >&2
+        return 1
+    fi
+
+    if ! streams=$(ffprobe -v error \
+        -show_entries stream=codec_name,codec_type:stream_disposition=attached_pic \
+        -of csv=p=0 "$file"); then
+        printf 'INVALID: %q: unable to inspect streams\n' "$file" >&2
+        return 1
+    fi
+
+    while IFS=, read -r codec type attached_pic; do
+        case "$type" in
+            video)
+                if [[ $attached_pic == 1 ]]; then
+                    continue
+                fi
+                if [[ $codec != h264 ]]; then
+                    invalid_reason="unsupported video codec $codec"
+                fi
+                ((video_count += 1))
+                ;;
+            audio)
+                if [[ $codec != aac ]]; then
+                    invalid_reason="unsupported audio codec $codec"
+                fi
+                ((audio_count += 1))
+                ;;
+            *)
+                invalid_reason="unsupported $type track ($codec)"
+                ;;
+        esac
+    done <<< "$streams"
+
+    if [[ -n $invalid_reason ]]; then
+        printf 'INVALID: %q: %s\n' "$file" "$invalid_reason" >&2
+        return 1
+    fi
+
+    if ((video_count != 1 || audio_count != 1)); then
+        printf 'INVALID: %q: expected one H.264 video and one AAC audio track; found %d video and %d audio\n' \
+            "$file" "$video_count" "$audio_count" >&2
+        return 1
+    fi
+
+    printf 'VALID: %s\n' "$file"
+}
+
+while IFS= read -r -d '' file; do
+    if validate_file "$file"; then
+        ((valid_count += 1))
+    else
+        ((invalid_count += 1))
+    fi
+done < <(find "$media_root" -type f -iname '*.mp4' -print0)
+
+if ((valid_count == 0)); then
+    echo "No valid MP4 files were found." >&2
+    exit 1
+fi
+
+if ((invalid_count > 0)); then
+    printf 'Validation failed: %d valid, %d invalid file(s).\n' "$valid_count" "$invalid_count" >&2
+    exit 1
+fi
+
+printf 'Validation passed: %d MP4 file(s).\n' "$valid_count"
+