ngram vs SmartSub

ngram turns prompts and source material into planned, editable business videos. Inputs can include documents, URLs, screenshots, decks, and recordings. Before rendering, users can review the script, storyboard, scene plan, visual direction, timing, and call to action; afterward, they can revise drafts through chat, a script editor, canvas controls, or a timeline. Projects can include generated visuals, voiceover, captions, motion graphics, translation, and editing. The Free plan costs nothing and gives 600 one-time credits, up to 60 seconds of premium AI-generated footage, 720p exports, and a watermark; no credit card is required. Basic costs $23.20 a month, billed annually, and Premium costs $47.20 a month, billed annually. Ultimate costs $239.20 a month, billed annually. Paid plans include unlimited manual editing and exports, with quality from 720p to 4K depending on plan. ngram is available on the web and as an extension. Social publishing to LinkedIn, X, and YouTube is in beta. The maker was founded in 2020 and is based in San Francisco, California.

SmartSub is an open-source desktop app for transcription, subtitle translation, proofreading, AI dubbing and video subtitle rendering. It runs on Windows, macOS and Linux, and is free with no local usage limits. For local processing, its maker says models process files on the user's computer, so those files do not leave the device. Transcription options include whisper.cpp, faster-whisper, FunASR, Qwen3-ASR and FireRedASR. Translation includes 20 services, including built-in free translation and integrations such as DeepSeek, Gemini and Ollama. The proofreading workspace offers video-synced editing, undo and redo, search and replace, and AI proofreading. SmartSub can generate speech from subtitle lines, align audio to the timeline and clone voices with ZipVoice, Volcengine or ElevenLabs. It can burn subtitles into video or package soft subtitles, preview styles and include dubbed audio. It also downloads videos from links using yt-dlp and lux, supporting more than 1,800 sites. Cloud transcription uploads audio to the configured provider endpoint; the README advises against using it for sensitive content.