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opencode-skill/skills/minimax-multimodal-toolkit/scripts/video/generate_long_video.sh
Kunthawat Greethong 7edf5bc4d0 feat: Import 35+ skills, merge duplicates, add openclaw installer
Major updates:
- Added 35+ new skills from awesome-opencode-skills and antigravity repos
- Merged SEO skills into seo-master
- Merged architecture skills into architecture
- Merged security skills into security-auditor and security-coder
- Merged testing skills into testing-master and testing-patterns
- Merged pentesting skills into pentesting
- Renamed website-creator to thai-frontend-dev
- Replaced skill-creator with github version
- Removed Chutes references (use MiniMax API instead)
- Added install-openclaw-skills.sh for cross-platform installation
- Updated .env.example with MiniMax API credentials
2026-03-26 11:37:39 +07:00

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#!/usr/bin/env bash
# MiniMax Long Video Generation CLI (pure bash)
#
# Generates multi-segment videos by chaining scenes together.
# Each segment's last frame becomes the next segment's first frame.
# Optionally adds AI-generated background music.
#
# Usage:
# bash scripts/video/generate_long_video.sh \
# --scenes "A sunrise" "Birds flying" "A calm lake" \
# --output output/long_video.mp4
#
# bash scripts/video/generate_long_video.sh \
# --scenes "A robot waking up" "The robot walks outside" \
# --music-prompt "cinematic orchestral" \
# --output output/robot_story.mp4
set -euo pipefail
SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
PROJECT_ROOT="$(cd "$SCRIPT_DIR/../.." && pwd)"
API_BASE="${MINIMAX_API_HOST:-https://api.minimaxi.com}/v1"
MUSIC_API_URL="${API_BASE}/music_generation"
POLL_INTERVAL=10
MAX_WAIT_TIME=600
REQUEST_TIMEOUT=60
MAX_CONSECUTIVE_FAILURES=5
# ============================================================================
# Common functions
# ============================================================================
load_env() {
local env_file
for env_file in "$PROJECT_ROOT/.env" "$(pwd)/.env"; do
if [[ -f "$env_file" ]]; then
while IFS= read -r line || [[ -n "$line" ]]; do
line="${line%%#*}"; line="$(echo "$line" | xargs)"
[[ -z "$line" || "$line" != *=* ]] && continue
local key="${line%%=*}" val="${line#*=}"
key="$(echo "$key" | xargs)"; val="$(echo "$val" | xargs)"
if [[ ${#val} -ge 2 ]]; then
case "$val" in \"*\") val="${val:1:${#val}-2}" ;; \'*\') val="${val:1:${#val}-2}" ;; esac
fi
[[ -z "${!key:-}" ]] && export "$key=$val"
done < "$env_file"
fi
done
}
check_api_key() {
if [[ -z "${MINIMAX_API_KEY:-}" ]]; then
echo "Error: MINIMAX_API_KEY not set." >&2; exit 1
fi
}
image_to_data_url() {
local path="$1"
[[ -f "$path" ]] || { echo "Error: Image not found: $path" >&2; exit 1; }
local mime; mime="$(file -b --mime-type "$path" 2>/dev/null)" || mime="image/jpeg"
local b64; b64="$(base64 < "$path")"
echo "data:${mime};base64,${b64}"
}
resolve_image() {
local input="$1"
[[ -z "$input" ]] && return
case "$input" in
http://*|https://*|data:*) echo "$input" ;;
*) image_to_data_url "$input" ;;
esac
}
# ============================================================================
# Video API helpers (duplicated from generate_video.sh for standalone use)
# ============================================================================
_create_task() {
local payload="$1"
local raw http_code response
raw="$(curl -s -w "\n%{http_code}" -X POST "${API_BASE}/video_generation" \
-H "Authorization: Bearer ${MINIMAX_API_KEY}" \
-H "Content-Type: application/json" \
--max-time "$REQUEST_TIMEOUT" -d "$payload")"
http_code="${raw##*$'\n'}"; response="${raw%$'\n'*}"
[[ "$http_code" -ge 400 ]] 2>/dev/null && { echo "Error: HTTP $http_code" >&2; echo "$response" >&2; exit 1; }
local sc; sc="$(echo "$response" | jq -r '.base_resp.status_code // 0')" 2>/dev/null || true
[[ "$sc" != "0" && -n "$sc" ]] && { echo "Error: $(echo "$response" | jq '.base_resp')" >&2; exit 1; }
echo "$response" | jq -r '.task_id // empty'
}
_poll_task() {
local task_id="$1" start_time cf=0
start_time="$(date +%s)"
while true; do
local now=$(($(date +%s) - start_time))
[[ $now -gt $MAX_WAIT_TIME ]] && { echo "Error: Timeout" >&2; exit 1; }
local raw http_code response
if raw="$(curl -s -w "\n%{http_code}" -G "${API_BASE}/query/video_generation" \
-d "task_id=$task_id" -H "Authorization: Bearer ${MINIMAX_API_KEY}" \
--max-time "$REQUEST_TIMEOUT" 2>/dev/null)"; then
http_code="${raw##*$'\n'}"; response="${raw%$'\n'*}"; cf=0
else
cf=$((cf+1)); [[ $cf -ge $MAX_CONSECUTIVE_FAILURES ]] && { echo "Error: Too many failures" >&2; exit 1; }
sleep "$POLL_INTERVAL"; continue
fi
local status; status="$(echo "$response" | jq -r '.status // "Unknown"')"
echo " [${now}s] Status: $status" >&2
[[ "$status" == "Success" ]] && { echo "$response" | jq -r '.file_id // empty'; return 0; }
[[ "$status" == "Fail" || "$status" == "Failed" || "$status" == "Error" ]] && { echo "Error: Task failed" >&2; exit 1; }
sleep "$POLL_INTERVAL"
done
}
_download_video() {
local file_id="$1" output_path="$2"
local raw; raw="$(curl -s -G "${API_BASE}/files/retrieve" -d "file_id=$file_id" \
-H "Authorization: Bearer ${MINIMAX_API_KEY}" --max-time "$REQUEST_TIMEOUT")"
local dl_url; dl_url="$(echo "$raw" | jq -r '.file.download_url // empty')"
[[ -z "$dl_url" ]] && { echo "Error: No download_url" >&2; exit 1; }
mkdir -p "$(dirname "$output_path")"
curl -s -o "$output_path" --max-time $((REQUEST_TIMEOUT * 3)) "$dl_url"
echo " Video saved: $output_path ($(wc -c < "$output_path" | tr -d ' ') bytes)" >&2
}
# ============================================================================
# FFmpeg helpers
# ============================================================================
get_video_duration() {
ffprobe -v error -show_entries format=duration -of json "$1" 2>/dev/null | jq -r '.format.duration'
}
get_video_fps() {
local fps_str
fps_str="$(ffprobe -v error -select_streams v:0 -show_entries stream=r_frame_rate -of csv=p=0 "$1" 2>/dev/null)" || { echo 25; return; }
local num den
num="${fps_str%/*}"; den="${fps_str#*/}"
echo $(( (num + den/2) / den )) 2>/dev/null || echo 25
}
video_has_audio() {
local out
out="$(ffprobe -v error -select_streams a -show_entries stream=codec_type -of csv=p=0 "$1" 2>/dev/null)"
[[ "$out" == *audio* ]]
}
extract_last_frame() {
local video_path="$1" output_image="$2"
# Try frame-accurate method with sseof fallback
if ! ffmpeg -y -sseof -0.04 -i "$video_path" -frames:v 1 -q:v 2 "$output_image" 2>/dev/null; then
echo "Warning: Could not extract last frame" >&2
return 1
fi
[[ -f "$output_image" ]] || return 1
echo " Extracted last frame: $output_image" >&2
}
concatenate_videos() {
local output_path="$1" crossfade="$2"
shift 2
local video_paths=("$@")
local n=${#video_paths[@]}
if [[ $n -eq 1 ]]; then
cp "${video_paths[0]}" "$output_path"
return 0
fi
local fps
fps="$(get_video_fps "${video_paths[0]}")"
local has_audio=true
for vp in "${video_paths[@]}"; do
video_has_audio "$vp" || { has_audio=false; break; }
done
if [[ "$(echo "$crossfade > 0" | bc -l)" == "1" ]]; then
# Get durations
local durations=()
for vp in "${video_paths[@]}"; do
durations+=("$(get_video_duration "$vp")")
done
# Build inputs
local inputs=()
for vp in "${video_paths[@]}"; do
inputs+=(-i "$(cd "$(dirname "$vp")" && pwd)/$(basename "$vp")")
done
# Calculate offsets
local offsets=() cumulative=0
for ((i=0; i<n-1; i++)); do
local offset
offset="$(echo "$cumulative + ${durations[$i]} - $crossfade" | bc -l)"
offsets+=("$offset")
cumulative="$offset"
done
# Build filter
local vf_parts=() af_parts=()
if [[ $n -eq 2 ]]; then
vf_parts+=("[0:v][1:v]xfade=transition=fade:duration=${crossfade}:offset=${offsets[0]}[vout]")
$has_audio && af_parts+=("[0:a][1:a]acrossfade=d=${crossfade}:c1=tri:c2=tri[aout]")
else
vf_parts+=("[0:v][1:v]xfade=transition=fade:duration=${crossfade}:offset=${offsets[0]}[xv1]")
$has_audio && af_parts+=("[0:a][1:a]acrossfade=d=${crossfade}:c1=tri:c2=tri[xa1]")
for ((i=2; i<n; i++)); do
local out_v="[xv${i}]" out_a="[xa${i}]"
[[ $i -eq $((n-1)) ]] && { out_v="[vout]"; out_a="[aout]"; }
vf_parts+=("[xv$((i-1))][${i}:v]xfade=transition=fade:duration=${crossfade}:offset=${offsets[$((i-1))]}${out_v}")
$has_audio && af_parts+=("[xa$((i-1))][${i}:a]acrossfade=d=${crossfade}:c1=tri:c2=tri${out_a}")
done
fi
local filter_complex
filter_complex="$(IFS=';'; echo "${vf_parts[*]}${af_parts[*]:+;${af_parts[*]}}")"
local cmd=(ffmpeg -y "${inputs[@]}" -filter_complex "$filter_complex" -map "[vout]")
$has_audio && cmd+=(-map "[aout]")
cmd+=(-c:v libx264 -preset medium -crf 18 -pix_fmt yuv420p -r "$fps")
$has_audio && cmd+=(-c:a aac -b:a 192k)
cmd+=("$output_path")
if "${cmd[@]}" 2>/dev/null; then
echo "Concatenated $n segments -> $output_path" >&2
return 0
fi
echo " Crossfade failed, falling back to re-encode concat..." >&2
fi
# Fallback: concat demuxer with re-encode
local concat_file
concat_file="$(mktemp /tmp/concat_XXXXXX.txt)"
for vp in "${video_paths[@]}"; do
echo "file '$(cd "$(dirname "$vp")" && pwd)/$(basename "$vp")'" >> "$concat_file"
done
ffmpeg -y -f concat -safe 0 -i "$concat_file" \
-c:v libx264 -preset medium -crf 18 -pix_fmt yuv420p -r "$fps" \
-c:a aac -b:a 192k "$output_path" 2>/dev/null
rm -f "$concat_file"
echo "Concatenated $n segments -> $output_path" >&2
}
merge_video_audio() {
local video_path="$1" audio_path="$2" output_path="$3"
local bgm_volume="${4:-0.3}" fade_in="${5:-0}" fade_out="${6:-0}"
local duration
duration="$(get_video_duration "$video_path")"
local af="[1:a]volume=${bgm_volume}"
[[ "$(echo "$fade_in > 0" | bc -l)" == "1" ]] && af+=",afade=t=in:d=${fade_in}"
if [[ "$(echo "$fade_out > 0" | bc -l)" == "1" ]]; then
local fo_start
fo_start="$(echo "$duration - $fade_out" | bc -l)"
[[ "$(echo "$fo_start < 0" | bc -l)" == "1" ]] && fo_start=0
af+=",afade=t=out:st=${fo_start}:d=${fade_out}"
fi
af+="[bgm]"
mkdir -p "$(dirname "$output_path")"
ffmpeg -y -i "$video_path" -i "$audio_path" \
-filter_complex "$af" \
-map 0:v -map "[bgm]" \
-c:v copy -c:a aac -shortest "$output_path" 2>/dev/null
echo "Merged video+audio -> $output_path" >&2
}
generate_music_instrumental() {
local prompt="$1" output_path="$2"
local payload
payload=$(jq -n \
--arg p "${prompt:-cinematic background music, orchestral, ambient}. pure music, no lyrics" \
'{model: "music-2.5", prompt: $p, lyrics: "[intro] [outro]", output_format: "url"}')
echo "Generating instrumental music: $prompt" >&2
local raw http_code response
raw="$(curl -s -w "\n%{http_code}" -X POST "$MUSIC_API_URL" \
-H "Authorization: Bearer ${MINIMAX_API_KEY}" \
-H "Content-Type: application/json" \
--max-time 300 -d "$payload")"
http_code="${raw##*$'\n'}"; response="${raw%$'\n'*}"
[[ "$http_code" -ge 400 ]] 2>/dev/null && { echo "Error: Music API HTTP $http_code" >&2; return 1; }
local audio_url
audio_url="$(echo "$response" | jq -r '.data.audio_url // .data.audio // .data.audio_file.download_url // empty')"
[[ -z "$audio_url" ]] && { echo "Error: No audio URL in music response" >&2; return 1; }
mkdir -p "$(dirname "$output_path")"
curl -s -o "$output_path" --max-time 120 "$audio_url"
echo " Music saved: $output_path" >&2
}
# ============================================================================
# Main
# ============================================================================
main() {
load_env
check_api_key
local scenes=() model="" segment_duration=10 resolution="768P"
local first_frame="" subject_reference="" crossfade=0.5
local music_prompt="" bgm_volume=0.3 fade_in=0 fade_out=0
local output=""
while [[ $# -gt 0 ]]; do
case "$1" in
--scenes)
shift
while [[ $# -gt 0 && "$1" != --* ]]; do
scenes+=("$1"); shift
done
;;
--model) model="$2"; shift 2 ;;
--segment-duration) segment_duration="$2"; shift 2 ;;
--resolution) resolution="$2"; shift 2 ;;
--first-frame) first_frame="$2"; shift 2 ;;
--subject-reference) subject_reference="$2"; shift 2 ;;
--crossfade) crossfade="$2"; shift 2 ;;
--music-prompt) music_prompt="$2"; shift 2 ;;
--bgm-volume) bgm_volume="$2"; shift 2 ;;
--fade-in) fade_in="$2"; shift 2 ;;
--fade-out) fade_out="$2"; shift 2 ;;
-o|--output) output="$2"; shift 2 ;;
-h|--help)
cat <<'USAGE'
MiniMax Long Video Generation CLI
Usage:
generate_long_video.sh --scenes "scene1" "scene2" ... -o OUTPUT
Options:
--scenes TEXT... Scene prompts (2+ required)
--model MODEL Model name (default: auto)
--segment-duration SECS Duration per segment (default: 10)
--resolution RES Resolution: 768P, 1080P (default: 768P)
--first-frame FILE First frame for scene 1 (local file or URL)
--subject-reference FILE Subject reference image
--crossfade SECS Crossfade duration between scenes (default: 0.5)
--music-prompt TEXT Generate BGM with this prompt
--bgm-volume FLOAT BGM volume level (default: 0.3)
--fade-in SECS BGM fade-in duration
--fade-out SECS BGM fade-out duration
-o, --output FILE Output video file (required)
Examples:
generate_long_video.sh --scenes "A sunrise" "Birds flying" "Sunset" -o long.mp4
generate_long_video.sh --scenes "Scene 1" "Scene 2" --crossfade 1 --music-prompt "cinematic" -o movie.mp4
USAGE
exit 0
;;
*) echo "Unknown option: $1" >&2; exit 1 ;;
esac
done
if [[ ${#scenes[@]} -eq 0 ]]; then
echo "Error: --scenes is required" >&2; exit 1
fi
if [[ -z "$output" ]]; then
echo "Error: --output / -o is required" >&2; exit 1
fi
local output_dir
output_dir="$(dirname "$output")"
mkdir -p "$output_dir"
local tmpdir="$output_dir/tmp"
mkdir -p "$tmpdir"
echo "Temp directory: $tmpdir"
local segment_paths=()
local current_first_frame="$first_frame"
echo "=== Generating ${#scenes[@]} video segments ==="
echo ""
for i in "${!scenes[@]}"; do
local scene="${scenes[$i]}"
echo "--- Segment $((i+1))/${#scenes[@]} ---"
echo " Prompt: $scene"
local seg_output="$tmpdir/segment_$(printf '%03d' "$i").mp4"
# Determine mode
local seg_mode="t2v"
[[ -n "$current_first_frame" ]] && seg_mode="i2v"
[[ -n "$subject_reference" && -z "$current_first_frame" ]] && seg_mode="ref"
# Determine model
local seg_model="$model"
if [[ -z "$seg_model" ]]; then
case "$seg_mode" in
t2v|i2v) seg_model="MiniMax-Hailuo-2.3" ;;
ref) seg_model="S2V-01" ;;
esac
fi
# Build payload
local payload
payload=$(jq -n \
--arg m "$seg_model" \
--arg p "$scene" \
--argjson d "$segment_duration" \
--arg r "$resolution" \
'{model: $m, prompt: $p, duration: $d, resolution: $r}')
if [[ "$seg_mode" == "i2v" ]]; then
local ff_url; ff_url="$(resolve_image "$current_first_frame")"
payload=$(echo "$payload" | jq --arg ff "$ff_url" '. + {first_frame_image: $ff, prompt_optimizer: false}')
elif [[ "$seg_mode" == "ref" ]]; then
local si_url; si_url="$(resolve_image "$subject_reference")"
payload=$(echo "$payload" | jq --arg si "$si_url" '. + {subject_reference: [{type: "character", image: [$si]}]}')
fi
# Generate segment
local task_id file_id
if task_id="$(_create_task "$payload")" && [[ -n "$task_id" ]]; then
echo " Task created: $task_id"
if file_id="$(_poll_task "$task_id")" && [[ -n "$file_id" ]]; then
_download_video "$file_id" "$seg_output"
segment_paths+=("$seg_output")
# Extract last frame for next segment
local last_frame_path="$tmpdir/last_frame_$(printf '%03d' "$i").jpg"
if extract_last_frame "$seg_output" "$last_frame_path"; then
current_first_frame="$last_frame_path"
else
current_first_frame=""
fi
else
echo " Error: Polling failed for segment $((i+1))" >&2
[[ ${#segment_paths[@]} -eq 0 ]] && exit 1
break
fi
else
echo " Error generating segment $((i+1))" >&2
[[ ${#segment_paths[@]} -eq 0 ]] && exit 1
break
fi
done
if [[ ${#segment_paths[@]} -eq 0 ]]; then
echo "Error: No segments were generated." >&2; exit 1
fi
# Concatenate
local final_video="$output"
[[ -n "$music_prompt" ]] && final_video="$tmpdir/concatenated.mp4"
if [[ ${#segment_paths[@]} -eq 1 ]]; then
cp "${segment_paths[0]}" "$final_video"
else
concatenate_videos "$final_video" "$crossfade" "${segment_paths[@]}"
fi
# Add BGM if requested
if [[ -n "$music_prompt" ]]; then
echo ""
echo "--- Generating background music ---"
local music_path="$tmpdir/bgm.mp3"
if generate_music_instrumental "$music_prompt" "$music_path"; then
merge_video_audio "$final_video" "$music_path" "$output" "$bgm_volume" "$fade_in" "$fade_out" || {
echo "Warning: Failed to add BGM, using video without music" >&2
[[ "$final_video" != "$output" ]] && cp "$final_video" "$output"
}
else
echo "Warning: Failed to generate BGM" >&2
[[ "$final_video" != "$output" ]] && cp "$final_video" "$output"
fi
fi
echo ""
echo "=== Done! Output: $output ==="
echo " Intermediate files in: $tmpdir"
echo " Delete with: rm -rf $tmpdir"
}
main "$@"