Articles about video editing | UserComp.com

FFmpeg: Honoring Outpoint Timestamps with Concat Demuxer and Preserving Input Codec Parameters

Resolve FFmpeg concatenation issues by using the concat demuxer to honor outpoint timestamps while preserving input codec parameters and avoiding re-encoding.

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Fixing FFmpeg Color Number Extraction Issue

Resolve FFmpeg color extraction issues by separating frame capture from pixel analysis using Python to generate accurate hex codes.

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Efficient Way of Stacking Two Videos Vertically Using FFmpeg

Resolves FFmpeg vertical stacking errors by using vstack instead of hstack and ensuring input videos share identical height and pixel format.

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How to Add a 15-Second Loop Audio/Video to a 40-Second Video Clip

Resolves FFmpeg audio mixing errors and loop duration mismatches when combining a looping background track with foreground audio clips.

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Concatenating Videos with Silent Audio using FFmpeg: A Comprehensive Guide

Merge multiple videos into one silent file using FFmpeg concat demuxer without re-encoding.

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Creating Portrait and Landscape Video Set Images with FFmpeg: A Simple Guide

Resolves FFmpeg hstack height mismatch errors by scaling portrait and landscape videos to a common height for side-by-side composite images.

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Understanding FFmpeg's ss, -t, -to, Streamcopy, and Keyframe Differences

Resolve FFmpeg trimming inaccuracies and slow performance by understanding keyframe dependencies, streamcopy limitations, and the difference between fast and precise seeking.

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Extracting Every 30th Frame as 720p Images using FFmpeg

Extract every 30th frame from a video as scaled 720p images using FFmpeg.

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Removing Every Nth Frame in Raw Video Using FFmpeg

Remove every Nth frame from raw video files using FFmpeg's select filter with modulo arithmetic to preserve quality without re-encoding.

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Increase Keyframe Interval for Static Videos

Reduce file size of static videos by increasing the FFmpeg keyframe interval to minimize redundant data storage.

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Modifying H.264 Video Without Re-encoding: A Special Case

Explains why H.264 visual edits require re-encoding due to inter-frame dependencies and clarifies that only metadata, containers, or audio tracks can be modified losslessly.

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Overlaying PNG Images on Single Frame Videos

This article explains how to overlay transparent PNG images onto single frame videos using FFmpeg's overlay filter with precise coordinate placement.

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Extracting Frames from a Video using FFmpeg: A Step-by-Step Guide

Extract specific frames from a video file using FFmpeg by skipping to a timestamp, applying frame count filters, and limiting output quantity.

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Add Multivideo Filter One Command in FFmpeg for Scaling and Watermarking 720p Videos

Resolve the need to scale 720p videos and add watermarks in one FFmpeg command to avoid intermediate files.

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How to Concatenate Videos with FFmpeg: Keep Original Frame Rate

Resolve frame rate conversion and stuttering when merging video clips by using the FFmpeg concat demuxer to join files without re-encoding.

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Creating a Loom-like Video with FFmpeg

Use FFmpeg to record screen and webcam inputs, then composite them with precise positioning and audio mixing for a professional Loom-style video.

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Resizing Video with FFmpeg: Two Passes, Without Aspect Ratio, Without Black Borders

Resolves FFmpeg video resizing issues by using two-pass encoding with the scale filter to maintain aspect ratio and eliminate black borders.

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Using FFmpeg to Overlay Images on Video Frames

Demonstrates how to overlay images on video frames using FFmpeg with precise positioning, timing control, and transparency handling.

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Shrinking 3D Movie Size: Keeping 3D?

Use FFmpeg to reduce 3D movie file sizes by re-encoding with a lower bitrate while preserving the spatial format.

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Increase Blur Power in Video Plays with FFmpeg: A Tech Support Guide

Resolve weak default blurring in FFmpeg by configuring high sigma values for boxblur or gblur filters to achieve strong video obscuration.

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Downscaling MP4 Video Using Nearest Neighbor Algorithm with FFmpeg

Downscale MP4 video using FFmpeg with nearest neighbor interpolation to preserve sharp pixel art edges without blur.

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The Challenge of Rendering Characters with FFmpeg: A Burning Captions Issue

Resolve missing characters or boxes when burning subtitles with FFmpeg by specifying a font file that supports the required Unicode glyphs.

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How to Alter Timestamps and Remove Audio Tracks in M2TS Files using FFmpeg

Remove unwanted audio tracks and fix timestamp misalignment in M2TS files using FFmpeg stream mapping without re-encoding.

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Get Better Results by Reducing Noise with FFmpeg

Resolve grainy video artifacts in FFmpeg by applying the hqdn3d or nlmeans filters to balance noise reduction and processing speed.

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Fixing Black/Empty Frames at the Start of a Video using FFmpeg

Remove black or empty frames from the start of a video by detecting the first non-black frame timestamp with FFmpeg and trimming both audio and video streams.

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Adding 3-Second Sound at Specific Time in Video Using FFmpeg

Insert a three-second audio clip at a specific timestamp in a video using FFmpeg with -itsoffset and stream mapping.

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Extract Video Segment Timestamps with FFmpeg: Command and Options

Extract precise video segments using FFmpeg by configuring -ss, -t, and -to flags for accurate timestamp selection and efficient stream copying.

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FFmpeg Textbox Padding using boxborderw: Setting Width Border

Resolves unreadable video text by adding horizontal padding between characters and the background box border using FFmpeg drawtext.

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Adding Green Video Overlay with FFmpeg: Define Interval

Add a periodic green video overlay to FFmpeg output using the overlay filter with time-based enable expressions.

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Understanding the Difference: FFmpeg 'i' Input and Output Duration

Resolves FFmpeg errors caused by using a non-existent 'i' flag for duration by explaining the correct use of -t and -to options.

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Easily Cut Long Video Collections into GIFs: A Tech Support Guide

Resolve large file sizes and poor quality when converting long videos to GIFs using FFmpeg command-line parameters.

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How to Merge/Concatenate Video Files in Part1 Folder of Parent Folder Alpha

Merge video files in the 43.DP(Part1) folder using FFmpeg concat demuxer or GUI tools to combine clips while preserving original quality.

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FFMPEG: Black Frame Split

Resolve black frames during FFmpeg video splitting by using fast seeking with stream copying or selecting keyframes via filters.

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Way to Set Exact Bitrate for Audio using Handbrake

Set exact audio bitrate in Handbrake by switching the codec to AAC or MP3 and selecting Constant rate to ensure consistent file sizes.

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Unable to Concatenate Videos using FFmpeg Python

Resolve FFmpeg Python concatenation errors by using a temporary input list file and the concat demuxer to merge videos without re-encoding.

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Error Concatenating Two Parts of Different Speeds with FFmpeg

Resolve FFmpeg concat errors for clips with different speeds by normalizing frame rates and timestamps before merging.

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Maintaining Transparency and Small File Size When Creating Videos with FFmpeg

Resolve FFmpeg transparency and file size issues by encoding image sequences to WebM with VP8/VP9 and Opus audio.

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Understanding the Total Duration with Xfade in FFmpeg

Calculate FFmpeg xfade video duration by subtracting total transition overlap from the sum of input clip durations.

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Slide Text Using Drawtext in FFmpeg: A Tech Support Guide

Slide text across video using FFmpeg drawtext filter with time-based expressions for automated scrolling.

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Replacing Soundtracks in an MP4 Video using FFmpeg with Complex Concat Audio

Replace MP4 audio with two concatenated AAC files using FFmpeg concat filter to avoid re-encoding video and preserve quality.

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Edit Family Videos with CapCut: A Great Choice from a Chinese Company

Resolve the challenge of editing family videos on PC by using CapCut’s intuitive interface, templates, and effects to create polished home movies quickly.

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Downsampling 4:4:4 YUV video: 4:2:2 issue with FFmpeg

Resolve incorrect chroma subsampling when converting 4:4:4 YUV video to 4:2:2 in FFmpeg by explicitly specifying the target pixel format.

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Crop Detection: Ensuring Frame Cropless Output with FFprobe and FFmpeg

Automatically detect and remove black borders from video frames using FFprobe analysis and FFmpeg cropdetect filter to ensure clean, edge-free output.

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Extracting Frames from Multiple Videos using FFmpeg: A Step-by-Step Guide

Extracts exactly four frames from multiple video files using a Bash loop and FFmpeg for efficient batch processing.

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Split Videos into Smaller Files using File Size with FFmpeg

Split large video files into smaller segments with a specific byte limit using FFmpeg for upload or storage constraints.

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Trimming Start of Video Generates Negative Presentation Timestamps with FFmpeg

Resolve negative presentation timestamps when trimming video start with FFmpeg by using -copyts and -start_at_zero.

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Troubleshooting FFmpeg Concat Error with Broadcast Files

Fix FFmpeg concat errors with broadcast files by normalizing inputs and using the concat demuxer to resolve mismatched timestamps and container formats.

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Slow Video Cutting with FFmpeg: Multiple HTTP Requests

Resolve slow video cutting with FFmpeg over HTTP by verifying server byte-range support and optimizing the -ss flag position to avoid sequential downloads.

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Apply a trim on the output generated by filter_complex without a separate command

Resolve timestamp errors and ensure smooth playback when trimming video within an FFmpeg filter_complex graph.

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Dynamically Change Filename Using FFmpeg: A Comprehensive Tech Support Guide

Resolve the inability to dynamically rename FFmpeg output files by using shell scripting or batch processing to generate filenames before passing them as arguments.

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