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[
{
"content": "You are an FFMPEG expert. Analyze the user's request, think through the required flags, then output the correct ffmpeg command.",
"role": "system"
},
{
"content": "Convert video.mp4 to webm format",
"role": "user"
},
{
"content": "<think>\nTask: Convert MP4 to WebM\n- WebM container uses VP9 video codec and Opus audio\n- Use -c:v libvpx-vp9 for video encoding\n- Use -c:a libopus for audio encoding\n- Default quality settings are fine for general use\n</think>\n\n```bash\nffmpeg -i video.mp4 -c:v libvpx-vp9 -c:a libopus output.webm\n```",
"role": "assistant"
}
] |
[
{
"content": "You are an FFMPEG expert. Analyze the user's request, think through the required flags, then output the correct ffmpeg command.",
"role": "system"
},
{
"content": "Convert my MKV file to MP4 for iPhone",
"role": "user"
},
{
"content": "<think>\nTask: MKV to MP4 for iPhone compatibility\n- iPhone needs H.264 video and AAC audio\n- Use -c:v libx264 for broad compatibility\n- Use -c:a aac for audio\n- Add -movflags +faststart for web/mobile streaming optimization\n- Use -preset medium for balance of speed and quality\n</think>\n\n```bash\nffmpeg -i input.mkv -c:v libx264 -preset medium -c:a aac -movflags +faststart output.mp4\n```",
"role": "assistant"
}
] |
[
{
"content": "You are an FFMPEG expert. Analyze the user's request, think through the required flags, then output the correct ffmpeg command.",
"role": "system"
},
{
"content": "Convert AVI to MP4 without re-encoding",
"role": "user"
},
{
"content": "<think>\nTask: Container conversion without re-encoding\n- User wants fast conversion, no quality loss\n- Use -c copy to stream copy both video and audio\n- This just remuxes the streams into MP4 container\n- Only works if source codecs are MP4-compatible\n</think>\n\n```bash\nffmpeg -i input.avi -c copy output.mp4\n```",
"role": "assistant"
}
] |
[
{
"content": "You are an FFMPEG expert. Analyze the user's request, think through the required flags, then output the correct ffmpeg command.",
"role": "system"
},
{
"content": "Convert MOV to MP4 with H.265 encoding for smaller file size",
"role": "user"
},
{
"content": "<think>\nTask: MOV to MP4 with H.265/HEVC for compression\n- H.265 provides ~50% better compression than H.264\n- Use -c:v libx265 for HEVC encoding\n- Use -crf 28 for good quality/size balance (lower = better quality)\n- Use -c:a aac for compatible audio\n- Add -tag:v hvc1 for Apple device compatibility\n</think>\n\n```bash\nffmpeg -i input.mov -c:v libx265 -crf 28 -tag:v hvc1 -c:a aac output.mp4\n```",
"role": "assistant"
}
] |
[
{
"content": "You are an FFMPEG expert. Analyze the user's request, think through the required flags, then output the correct ffmpeg command.",
"role": "system"
},
{
"content": "Convert a video to audio-only MP3",
"role": "user"
},
{
"content": "<think>\nTask: Extract audio and convert to MP3\n- Need to disable video stream with -vn\n- Use -c:a libmp3lame for MP3 encoding\n- Use -b:a 192k for good audio quality\n- Could also use -q:a 2 for VBR quality\n</think>\n\n```bash\nffmpeg -i input.mp4 -vn -c:a libmp3lame -b:a 192k output.mp3\n```",
"role": "assistant"
}
] |
[
{
"content": "You are an FFMPEG expert. Analyze the user's request, think through the required flags, then output the correct ffmpeg command.",
"role": "system"
},
{
"content": "Extract the audio track from video.mp4 without re-encoding",
"role": "user"
},
{
"content": "<think>\nTask: Extract audio without transcoding\n- Use -vn to exclude video stream\n- Use -c:a copy to stream copy audio as-is\n- Output format determines container (m4a for AAC, use original codec)\n- This is the fastest method, no quality loss\n</think>\n\n```bash\nffmpeg -i video.mp4 -vn -c:a copy output.m4a\n```",
"role": "assistant"
}
] |
[
{
"content": "You are an FFMPEG expert. Analyze the user's request, think through the required flags, then output the correct ffmpeg command.",
"role": "system"
},
{
"content": "Replace the audio in my video with a different audio file",
"role": "user"
},
{
"content": "<think>\nTask: Replace audio track in video\n- Need two inputs: video file and new audio file\n- Use -map 0:v to take video from first input\n- Use -map 1:a to take audio from second input\n- Use -c:v copy to avoid re-encoding video\n- Use -shortest to end when shortest stream ends\n</think>\n\n```bash\nffmpeg -i video.mp4 -i new_audio.mp3 -map 0:v -map 1:a -c:v copy -shortest output.mp4\n```",
"role": "assistant"
}
] |
[
{
"content": "You are an FFMPEG expert. Analyze the user's request, think through the required flags, then output the correct ffmpeg command.",
"role": "system"
},
{
"content": "Extract audio from video and convert to WAV format",
"role": "user"
},
{
"content": "<think>\nTask: Extract audio as uncompressed WAV\n- Use -vn to remove video stream\n- WAV is uncompressed, so use PCM codec\n- Use -c:a pcm_s16le for 16-bit signed little-endian PCM\n- This creates lossless audio, larger file size\n</think>\n\n```bash\nffmpeg -i video.mp4 -vn -c:a pcm_s16le output.wav\n```",
"role": "assistant"
}
] |
[
{
"content": "You are an FFMPEG expert. Analyze the user's request, think through the required flags, then output the correct ffmpeg command.",
"role": "system"
},
{
"content": "Merge an audio file with a video that has no sound",
"role": "user"
},
{
"content": "<think>\nTask: Add audio track to silent video\n- Two inputs needed: video and audio\n- Use -map 0:v for video from first input\n- Use -map 1:a for audio from second input\n- Use -c:v copy to preserve video quality\n- Use -c:a aac to encode audio for MP4 compatibility\n</think>\n\n```bash\nffmpeg -i silent_video.mp4 -i audio.mp3 -map 0:v -map 1:a -c:v copy -c:a aac output.mp4\n```",
"role": "assistant"
}
] |
[
{
"content": "You are an FFMPEG expert. Analyze the user's request, think through the required flags, then output the correct ffmpeg command.",
"role": "system"
},
{
"content": "Normalize the audio volume in my video",
"role": "user"
},
{
"content": "<think>\nTask: Audio normalization\n- Use loudnorm filter for EBU R128 loudness normalization\n- This is a two-pass process for best results, but single pass works\n- Apply filter with -af loudnorm\n- Re-encode audio, can copy video\n</think>\n\n```bash\nffmpeg -i input.mp4 -c:v copy -af loudnorm -c:a aac output.mp4\n```",
"role": "assistant"
}
] |
[
{
"content": "You are an FFMPEG expert. Analyze the user's request, think through the required flags, then output the correct ffmpeg command.",
"role": "system"
},
{
"content": "Trim the first 30 seconds from my video",
"role": "user"
},
{
"content": "<think>\nTask: Remove first 30 seconds (start at 00:00:30)\n- Use -ss for start time, placed before -i for fast seeking\n- Use -c copy for stream copying (fast, no re-encode)\n- No -t or -to means go until end of file\n- -ss before input = fast seek, -ss after input = accurate seek\n</think>\n\n```bash\nffmpeg -ss 00:00:30 -i input.mp4 -c copy output.mp4\n```",
"role": "assistant"
}
] |
[
{
"content": "You are an FFMPEG expert. Analyze the user's request, think through the required flags, then output the correct ffmpeg command.",
"role": "system"
},
{
"content": "Cut a clip from 1:30 to 2:45 in my video",
"role": "user"
},
{
"content": "<think>\nTask: Extract specific time range\n- Use -ss 00:01:30 to start at 1 minute 30 seconds\n- Use -to 00:02:45 to end at 2 minutes 45 seconds\n- Place -ss before -i for fast seeking\n- Use -c copy to avoid re-encoding\n- Note: -to is absolute time, -t would be duration\n</think>\n\n```bash\nffmpeg -ss 00:01:30 -to 00:02:45 -i input.mp4 -c copy output.mp4\n```",
"role": "assistant"
}
] |
[
{
"content": "You are an FFMPEG expert. Analyze the user's request, think through the required flags, then output the correct ffmpeg command.",
"role": "system"
},
{
"content": "Extract a 60 second clip starting at 5 minutes",
"role": "user"
},
{
"content": "<think>\nTask: Extract clip by start time and duration\n- Use -ss 00:05:00 to start at 5 minutes\n- Use -t 60 for 60 second duration (can also use 00:01:00)\n- Use -c copy for fast extraction without re-encoding\n- Duration -t is relative to start position\n</think>\n\n```bash\nffmpeg -ss 00:05:00 -t 60 -i input.mp4 -c copy output.mp4\n```",
"role": "assistant"
}
] |
[
{
"content": "You are an FFMPEG expert. Analyze the user's request, think through the required flags, then output the correct ffmpeg command.",
"role": "system"
},
{
"content": "Get the last 2 minutes of my video",
"role": "user"
},
{
"content": "<think>\nTask: Extract last portion of video\n- Use -sseof to seek from end of file\n- -sseof -120 means start 120 seconds before end\n- Use -c copy for fast stream copying\n- This avoids needing to know total duration\n</think>\n\n```bash\nffmpeg -sseof -120 -i input.mp4 -c copy output.mp4\n```",
"role": "assistant"
}
] |
[
{
"content": "You are an FFMPEG expert. Analyze the user's request, think through the required flags, then output the correct ffmpeg command.",
"role": "system"
},
{
"content": "Split my video into 10 second chunks",
"role": "user"
},
{
"content": "<think>\nTask: Segment video into fixed-duration chunks\n- Use -f segment for segment muxer\n- Use -segment_time 10 for 10 second segments\n- Use -c copy to avoid re-encoding\n- Use -reset_timestamps 1 to reset timestamps per segment\n- Output pattern with %03d for numbering\n</think>\n\n```bash\nffmpeg -i input.mp4 -f segment -segment_time 10 -c copy -reset_timestamps 1 output_%03d.mp4\n```",
"role": "assistant"
}
] |
[
{
"content": "You are an FFMPEG expert. Analyze the user's request, think through the required flags, then output the correct ffmpeg command.",
"role": "system"
},
{
"content": "Resize my video to 1280x720",
"role": "user"
},
{
"content": "<think>\nTask: Scale video to specific resolution\n- Use -vf scale filter for resizing\n- scale=1280:720 sets exact dimensions\n- Need to re-encode video when using filters\n- Use -c:a copy to preserve audio without re-encoding\n</think>\n\n```bash\nffmpeg -i input.mp4 -vf \"scale=1280:720\" -c:a copy output.mp4\n```",
"role": "assistant"
}
] |
[
{
"content": "You are an FFMPEG expert. Analyze the user's request, think through the required flags, then output the correct ffmpeg command.",
"role": "system"
},
{
"content": "Scale my video to 720p while keeping aspect ratio",
"role": "user"
},
{
"content": "<think>\nTask: Scale to height with maintained aspect ratio\n- Use scale=-1:720 where -1 auto-calculates width\n- Or use scale=-2:720 to ensure even number (required by some codecs)\n- This maintains original aspect ratio\n- Re-encoding required for filter\n</think>\n\n```bash\nffmpeg -i input.mp4 -vf \"scale=-2:720\" -c:a copy output.mp4\n```",
"role": "assistant"
}
] |
[
{
"content": "You are an FFMPEG expert. Analyze the user's request, think through the required flags, then output the correct ffmpeg command.",
"role": "system"
},
{
"content": "Resize video to fit in 1920x1080 without stretching",
"role": "user"
},
{
"content": "<think>\nTask: Scale to fit within bounds preserving aspect ratio\n- Use scale with force_original_aspect_ratio=decrease\n- This scales down to fit within 1920x1080\n- Won't upscale if already smaller\n- Add pad filter if exact dimensions needed with letterboxing\n</think>\n\n```bash\nffmpeg -i input.mp4 -vf \"scale=1920:1080:force_original_aspect_ratio=decrease\" -c:a copy output.mp4\n```",
"role": "assistant"
}
] |
[
{
"content": "You are an FFMPEG expert. Analyze the user's request, think through the required flags, then output the correct ffmpeg command.",
"role": "system"
},
{
"content": "Crop my video to 16:9 aspect ratio",
"role": "user"
},
{
"content": "<think>\nTask: Crop to specific aspect ratio\n- Use crop filter with calculated dimensions\n- crop=ih*16/9:ih centers a 16:9 crop\n- ih = input height, calculates width from it\n- Crop is centered by default\n- Alternative: crop=w:h:x:y for manual positioning\n</think>\n\n```bash\nffmpeg -i input.mp4 -vf \"crop=ih*16/9:ih\" -c:a copy output.mp4\n```",
"role": "assistant"
}
] |
[
{
"content": "You are an FFMPEG expert. Analyze the user's request, think through the required flags, then output the correct ffmpeg command.",
"role": "system"
},
{
"content": "Make my vertical video horizontal with blur on sides",
"role": "user"
},
{
"content": "<think>\nTask: Convert portrait to landscape with blurred background\n- Complex filter: need background and foreground\n- Split input, scale one for blurred BG, overlay original centered\n- Use split to duplicate stream\n- Scale BG to 1920x1080, apply blur\n- Scale original to fit height, overlay centered\n</think>\n\n```bash\nffmpeg -i input.mp4 -vf \"split[bg][fg];[bg]scale=1920:1080,boxblur=20:20[bg];[fg]scale=-2:1080[fg];[bg][fg]overlay=(W-w)/2:(H-h)/2\" -c:a copy output.mp4\n```",
"role": "assistant"
}
] |
[
{
"content": "You are an FFMPEG expert. Analyze the user's request, think through the required flags, then output the correct ffmpeg command.",
"role": "system"
},
{
"content": "Compress my video to reduce file size",
"role": "user"
},
{
"content": "<think>\nTask: Reduce file size with compression\n- Use H.264 with CRF (Constant Rate Factor)\n- CRF 23 is default, higher = smaller file, lower quality\n- CRF 28 gives good compression with acceptable quality\n- Use -preset medium for balance of speed and compression\n- Re-encode audio to AAC at lower bitrate\n</think>\n\n```bash\nffmpeg -i input.mp4 -c:v libx264 -crf 28 -preset medium -c:a aac -b:a 128k output.mp4\n```",
"role": "assistant"
}
] |
[
{
"content": "You are an FFMPEG expert. Analyze the user's request, think through the required flags, then output the correct ffmpeg command.",
"role": "system"
},
{
"content": "Compress video to under 25MB for Discord",
"role": "user"
},
{
"content": "<think>\nTask: Target specific file size\n- Need two-pass encoding for accurate file size\n- Calculate bitrate: (target_size * 8192) / duration\n- For 25MB with 60s video: ~3400 kbps total\n- Allocate ~128k for audio, rest for video\n- Use -maxrate and -bufsize for streaming\n</think>\n\n```bash\n# First pass\nffmpeg -i input.mp4 -c:v libx264 -b:v 3000k -pass 1 -an -f null NUL\n# Second pass\nffmpeg -i input.mp4 -c:v libx264 -b:v 3000k -pass 2 -c:a aac -b:a 128k output.mp4\n```",
"role": "assistant"
}
] |
[
{
"content": "You are an FFMPEG expert. Analyze the user's request, think through the required flags, then output the correct ffmpeg command.",
"role": "system"
},
{
"content": "Reduce video quality to make it smaller but still watchable",
"role": "user"
},
{
"content": "<think>\nTask: Quick compression for smaller size\n- Use CRF 32 for more aggressive compression\n- Use faster preset to speed up encoding\n- Scale down to 720p to further reduce size\n- Lower audio bitrate to 96k\n- This prioritizes file size over quality\n</think>\n\n```bash\nffmpeg -i input.mp4 -vf \"scale=-2:720\" -c:v libx264 -crf 32 -preset faster -c:a aac -b:a 96k output.mp4\n```",
"role": "assistant"
}
] |
[
{
"content": "You are an FFMPEG expert. Analyze the user's request, think through the required flags, then output the correct ffmpeg command.",
"role": "system"
},
{
"content": "Compress video using H.265 for maximum compression",
"role": "user"
},
{
"content": "<think>\nTask: Maximum compression with H.265/HEVC\n- H.265 provides ~50% better compression than H.264\n- Use libx265 encoder\n- CRF 28 for H.265 is roughly equivalent to CRF 23 for H.264\n- Use slower preset for better compression (more time)\n- Add -tag:v hvc1 for compatibility\n</think>\n\n```bash\nffmpeg -i input.mp4 -c:v libx265 -crf 28 -preset slow -tag:v hvc1 -c:a aac -b:a 128k output.mp4\n```",
"role": "assistant"
}
] |
[
{
"content": "You are an FFMPEG expert. Analyze the user's request, think through the required flags, then output the correct ffmpeg command.",
"role": "system"
},
{
"content": "Lower the bitrate of my video to 2 Mbps",
"role": "user"
},
{
"content": "<think>\nTask: Set specific video bitrate\n- Use -b:v to set target video bitrate\n- 2M = 2 Mbps\n- Add -maxrate and -bufsize for consistent bitrate\n- Use -bufsize equal to 2x maxrate typically\n- This gives more predictable file sizes than CRF\n</think>\n\n```bash\nffmpeg -i input.mp4 -c:v libx264 -b:v 2M -maxrate 2M -bufsize 4M -c:a aac -b:a 128k output.mp4\n```",
"role": "assistant"
}
] |
[
{
"content": "You are an FFMPEG expert. Analyze the user's request, think through the required flags, then output the correct ffmpeg command.",
"role": "system"
},
{
"content": "Convert my video to a GIF",
"role": "user"
},
{
"content": "<think>\nTask: Video to GIF conversion\n- GIFs have limited 256 color palette\n- Use palettegen and paletteuse filters for quality\n- Two-step process: generate palette, then apply\n- Scale down for reasonable file size\n- Set fps to reduce frames (10-15 fps typical)\n</think>\n\n```bash\nffmpeg -i input.mp4 -vf \"fps=10,scale=480:-1:flags=lanczos,split[s0][s1];[s0]palettegen[p];[s1][p]paletteuse\" output.gif\n```",
"role": "assistant"
}
] |
[
{
"content": "You are an FFMPEG expert. Analyze the user's request, think through the required flags, then output the correct ffmpeg command.",
"role": "system"
},
{
"content": "Make a GIF from seconds 5 to 10 of my video",
"role": "user"
},
{
"content": "<think>\nTask: Create GIF from specific time range\n- Use -ss and -t to select time range\n- -ss 5 starts at 5 seconds\n- -t 5 takes 5 seconds duration (5 to 10)\n- Apply palette generation for quality\n- Scale and set fps for reasonable file size\n</think>\n\n```bash\nffmpeg -ss 5 -t 5 -i input.mp4 -vf \"fps=10,scale=480:-1:flags=lanczos,split[s0][s1];[s0]palettegen[p];[s1][p]paletteuse\" output.gif\n```",
"role": "assistant"
}
] |
[
{
"content": "You are an FFMPEG expert. Analyze the user's request, think through the required flags, then output the correct ffmpeg command.",
"role": "system"
},
{
"content": "Create a high quality GIF from my video",
"role": "user"
},
{
"content": "<think>\nTask: High quality GIF\n- Higher resolution and fps for quality\n- Use full palette generation with stats_mode=diff\n- Keep larger scale (640px width)\n- Higher fps (15) for smoother animation\n- Use dither=bayer for better color handling\n- Warning: file will be large\n</think>\n\n```bash\nffmpeg -i input.mp4 -vf \"fps=15,scale=640:-1:flags=lanczos,split[s0][s1];[s0]palettegen=stats_mode=diff[p];[s1][p]paletteuse=dither=bayer\" output.gif\n```",
"role": "assistant"
}
] |
[
{
"content": "You are an FFMPEG expert. Analyze the user's request, think through the required flags, then output the correct ffmpeg command.",
"role": "system"
},
{
"content": "Make a small looping GIF for a website",
"role": "user"
},
{
"content": "<think>\nTask: Small optimized GIF for web\n- Prioritize small file size\n- Lower resolution (320px width)\n- Lower fps (8) to reduce frames\n- Use palette optimization\n- GIFs loop by default\n- Consider short duration for small size\n</think>\n\n```bash\nffmpeg -i input.mp4 -vf \"fps=8,scale=320:-1:flags=lanczos,split[s0][s1];[s0]palettegen[p];[s1][p]paletteuse\" -loop 0 output.gif\n```",
"role": "assistant"
}
] |
[
{
"content": "You are an FFMPEG expert. Analyze the user's request, think through the required flags, then output the correct ffmpeg command.",
"role": "system"
},
{
"content": "Convert video to GIF with text overlay",
"role": "user"
},
{
"content": "<think>\nTask: GIF with text burned in\n- Combine drawtext filter with GIF conversion\n- Use drawtext for adding text\n- Set font, size, position, color\n- Chain with palette filters\n- Text position: x=10:y=10 for top-left, or (w-tw)/2 for centered\n</think>\n\n```bash\nffmpeg -i input.mp4 -vf \"fps=10,scale=480:-1,drawtext=text='Hello World':fontsize=24:fontcolor=white:x=10:y=10,split[s0][s1];[s0]palettegen[p];[s1][p]paletteuse\" output.gif\n```",
"role": "assistant"
}
] |
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