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refactor: adjust rendering logic #253

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Merged
merged 1 commit into from
Apr 3, 2025
Merged

refactor: adjust rendering logic #253

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50 changes: 31 additions & 19 deletions src/burn/render_command.py
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Original file line number Diff line number Diff line change
Expand Up @@ -14,49 +14,61 @@ def render_command(in_video_path, out_video_path, in_subtitle_font_size, in_subt
in_subtitle_margin_v: str, the bottom margin of subtitles
"""
in_ass_path = in_video_path[:-4] + '.ass'
if not os.path.isfile(in_ass_path):
scan_log.warning("Cannot find danmaku file, return directly")
subprocess.run(['mv', in_video_path, out_video_path], stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
return

in_srt_path = in_video_path[:-4] + '.srt'

if GPU_EXIST and os.path.isfile(in_srt_path):
if os.path.isfile(in_ass_path):
scan_log.info("Current Mode: GPU with danmaku")
command = [
if os.path.isfile(in_srt_path):
if GPU_EXIST:
scan_log.info("Current Mode: GPU with subtitles")
gpu_srt_ass_command = [
'ffmpeg', '-y', '-hwaccel', 'cuda', '-c:v', 'h264_cuvid', '-i', in_video_path,
'-c:v', 'h264_nvenc', '-vf', f"subtitles={in_srt_path}:force_style='Fontsize={in_subtitle_font_size},MarginV={in_subtitle_margin_v}',subtitles={in_ass_path}", out_video_path
]
try:
result = subprocess.run(command, check=True, capture_output=True, text=True)
result = subprocess.run(gpu_srt_ass_command, check=True, capture_output=True, text=True)
scan_log.debug(f"FFmpeg output: {result.stdout}")
if result.stderr:
scan_log.debug(f"FFmpeg debug: {result.stderr}")
except subprocess.CalledProcessError as e:
scan_log.error(f"Error: {e.stderr}")

else:
scan_log.info("Current Mode: GPU without danmaku")
command_no_danmaku = [
'ffmpeg', '-y', '-hwaccel', 'cuda', '-c:v', 'h264_cuvid', '-i', in_video_path,
'-c:v', 'h264_nvenc', '-vf', f"subtitles={in_srt_path}:force_style='Fontsize={in_subtitle_font_size},MarginV={in_subtitle_margin_v}'", out_video_path
scan_log.info("Current Mode: CPU with subtitles")
cpu_srt_ass_command = [
'ffmpeg', '-y', '-i', in_video_path, '-vf', f"subtitles={in_srt_path}:force_style='Fontsize={in_subtitle_font_size},MarginV={in_subtitle_margin_v}',subtitles={in_ass_path}", '-preset', 'ultrafast', out_video_path
]
try:
result = subprocess.run(command_no_danmaku, check=True, capture_output=True, text=True)
result = subprocess.run(cpu_srt_ass_command, check=True, capture_output=True, text=True)
scan_log.debug(f"FFmpeg output: {result.stdout}")
if result.stderr:
scan_log.debug(f"FFmpeg debug: {result.stderr}")
except subprocess.CalledProcessError as e:
scan_log.error(f"Error: {e.stderr}")
else:
if os.path.isfile(in_ass_path):
scan_log.info("Current Mode: CPU with danmaku")
command_without_gpu = [
'ffmpeg', '-y', '-i', in_video_path, '-vf', f'ass={in_ass_path}', '-preset', 'ultrafast', out_video_path
if GPU_EXIST:
scan_log.info("Current Mode: GPU without subtitles")
gpu_ass_command = [
'ffmpeg', '-y', '-hwaccel', 'cuda', '-c:v', 'h264_cuvid', '-i', in_video_path,
'-c:v', 'h264_nvenc', '-vf', f"ass={in_ass_path}", out_video_path
]
try:
result = subprocess.run(command_without_gpu, check=True, capture_output=True, text=True)
result = subprocess.run(gpu_ass_command, check=True, capture_output=True, text=True)
scan_log.debug(f"FFmpeg output: {result.stdout}")
if result.stderr:
scan_log.debug(f"FFmpeg debug: {result.stderr}")
except subprocess.CalledProcessError as e:
scan_log.error(f"Error: {e.stderr}")
else:
scan_log.info("Current Mode: CPU without danmaku")
subprocess.run(['mv', in_video_path, out_video_path], stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
scan_log.info("Current Mode: CPU without subtitles")
cpu_ass_command = [
'ffmpeg', '-y', '-i', in_video_path, '-vf', f"ass={in_ass_path}", '-preset', 'ultrafast', out_video_path
]
try:
result = subprocess.run(cpu_ass_command, check=True, capture_output=True, text=True)
scan_log.debug(f"FFmpeg output: {result.stdout}")
if result.stderr:
scan_log.debug(f"FFmpeg debug: {result.stderr}")
except subprocess.CalledProcessError as e:
scan_log.error(f"Error: {e.stderr}")
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