Articles about video | UserComp.com | Page [ 5 ]

Fixing Greyscale Issue: Stills Converted to Video in ffmpeg

Resolve ffmpeg converting color still images to greyscale video by forcing the yuv420p pixel format.

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Using FFMpeg to match images with videos

Resolve FFmpeg image duration issues by using the concat demuxer to precisely control static visual display times without re-encoding.

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How to Set Poll Questions in Jitsi Meet Beforehand

Resolve Jitsi Meet's lack of native polling by using third-party tools like Slido or Mentimeter to create and share pre-set questions during meetings.

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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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Quantify Compression Artifacts in Videos

Measure video compression artifacts using FFmpeg PSNR and SSIM filters to objectively evaluate visual quality degradation between original and encoded streams.

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Convert MP4 to AVI using FFmpeg on macOS

Resolve MP4 to AVI conversion errors on macOS by installing FFmpeg via Homebrew and applying explicit codec and scaling commands for compatibility.

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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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Speeding up Video: FFmpeg-based Timestamps for CSV

Resolve video playback speed issues by using FFmpeg setpts to accelerate frames and extract resulting timestamps to CSV for analysis.

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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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Sending and receiving ffmpeg video stream through USB to TTL converter

Resolve the inability to stream video over low-bandwidth USB-to-TTL converters by using the serial port for FFmpeg control commands while transmitting data via high-speed interfaces.

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Can't Change Thumbnail for Short YouTube Videos?

Resolve the inability to upload custom thumbnails for YouTube Shorts by selecting a specific video frame within the mobile app before publishing.

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Convert Dolby 5.1 Surround M2TS to WebM Minimal Audio Degradation

Resolve WebM container incompatibility with Dolby Digital AC-3 audio by extracting the stream and converting it to Opus for minimal quality loss.

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How to Move Video Files to Separate Folders by Batch Script

Batch script organizes video files into folders of forty by calculating group indices and using delayed expansion for accurate variable handling.

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Easiest Way to Add a 3 Second Delay Every 30 Seconds in a Subtitle to Sync It with a Video

Resolve subtitle drift by adding a 3-second delay every 30 seconds using FFmpeg to sync text with video.

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Fixing Ffmpeg Bug RTMPS Facebook Live and all rtmps

Resolve FFmpeg RTMPS handshake failures with Facebook Live by updating SSL libraries and verifying certificate trust.

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Overcoming FFmpeg Movie Encoding Discontinuities in Video and Audio - A Guide for Tech Support

Resolve FFmpeg video freezing and audio desynchronization by using decoder seeking with -ss before -i and ensuring keyframe alignment.

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FFMPEG: Converting MKV to MP4 for Playback in VLC Media Player

Resolve VLC playback errors by converting MKV files to compatible MP4 format using FFmpeg with H.264 and AAC codecs.

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Need a Powerful CPU to Decode AV1 Encoded Videos in Real-Time?

Resolve AV1 video stuttering by identifying missing hardware decode support in older CPUs and GPUs and ensuring browser acceleration is enabled.

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Handbrake: Useful for Converting Fast 480p30 and 1080p30 MKV Videos?

Convert Fast 480p30 and 1080p30 MKV videos to optimized, compatible formats using Handbrake while preserving quality.

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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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Burning Multiple SRT Subtitles Tracks into Video using ffmpeg -filter-complex

Burn multiple SRT subtitle tracks into a video using ffmpeg -filter_complex to ensure compatibility with players that do not support external subtitles.

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Troubleshooting Video Frame Reordering with FFmpeg H264 Native Decoder

Resolve video frame corruption and display order issues caused by incorrect FFmpeg H264 decoder flags.

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Understanding Video Bitrate Calculation in Windows 11

Calculate average video bitrate in Windows 11 using file size and duration without third-party software.

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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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Firebase and FFmpeg: Troubleshooting Download Errors for Videos Longer Than One Hour

Resolve FFmpeg download failures for hour-long Firebase videos by implementing server-side processing with extended timeouts and resumable chunked retrieval.

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Building my own video upload platform: What video sizes/formats to save with FFMPEG? MP4+WEBM

Transcode videos to MP4 and WebM using FFmpeg to ensure cross-browser compatibility and reduce bandwidth costs.

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FFmpeg Cropping, Changing Resolution, and FPS in One Process

Combine cropping, resolution scaling, and frame rate adjustment into a single FFmpeg command to process video efficiently without intermediate files.

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Concatenating Audio, Image, and Video with FMPEG Results in Infinite Video: A Tech Support Guide

Fixes FFmpeg infinite video error when concatenating images, audio, and video by generating a synchronized intermediate clip.

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Effortless FFmpeg Segmentation Without Re-encoding or Dropped Frames

Split videos into precise segments without re-encoding or dropping frames by using FFmpeg's -c copy flag with specific start and end timestamps.

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Samsung Galaxy Book Pro 360: Increasing Dedicated Video Memory for Smooth 3D Gaming

Resolve smooth 3D gaming performance issues on Samsung Galaxy Book Pro 360 by optimizing shared video memory allocation through driver updates and Windows graphics settings.

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Convert 8-bit H.265 (HEVC) video to 8-bit H.264 without quality loss

Resolve H.265 playback incompatibility on legacy devices by converting to H.264 using FFmpeg with CRF 18 for near-lossless quality.

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Troubleshooting net::ERR_FILE_NOT_FOUND error in Video JS when changing video source

Resolve Video.js net::ERR_FILE_NOT_FOUND errors by fixing relative paths, using absolute URLs, and configuring server headers for dynamic source changes.

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Improve H.265 to H.264 Conversion with FFmpeg: A Tech Support Guide

Resolve blocky video artifacts when converting H.265 to H.264 by setting CRF 18, slow preset, and yuv420p pixel format in FFmpeg.

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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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Creating a Video Clip from an Image File using FFmpeg

Resolve zero-duration video errors when converting static images to MP4 by looping the input and specifying duration with FFmpeg.

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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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Troubleshooting Blurry Video with FFMPEG and Libopenh264

Resolve blurry FFMPEG Libopenh264 output by setting explicit bitrates, optimizing presets, and ensuring yuv420p pixel format compatibility.

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Understanding Video Conversion: Difference between 240p and 1080p

Convert 1080p video to 240p using FFmpeg to reduce file size and bandwidth for low-bandwidth environments.

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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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Extract Video Bitrate using FFprobe

Extract video bitrate using FFprobe to verify encoding quality and optimize bandwidth without re-encoding.

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FFmpeg: Crop Video - Last 10 Seconds Not Working

Resolve FFmpeg cropping errors by calculating the start time with ffprobe and using -ss and -t flags to extract the last 10 seconds.

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Can YouTube Send a Video File Once and Multiple Users Stream It?

Explains why YouTube uses unicast instead of multicast to support individual playback controls and variable bitrates for multiple users.

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How to Disable Incoming Video in Microsoft Teams Version 1.6.00.22378

Resolve inability to globally disable incoming video in Microsoft Teams by using manual workarounds like hiding participants or adjusting network settings.

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FFmpeg Warning and No Sound on the Encoding Video

Resolve FFmpeg silent video warnings by explicitly mapping audio streams with the -map flag to ensure correct codec selection and output.

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Watermark Video with Two Timestamps

Overlay two distinct timestamps like UTC and AEST on a video using FFmpeg drawtext filter with precise positioning.

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Cut Video with FFmpeg: No Reencoding (Minimal)

Cut video segments without reencoding using FFmpeg streamcopy to preserve quality and speed, while noting keyframe alignment limitations.

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FFMPEG Not Compiling: Properly Creating Videos with FFMPEG

Resolve FFmpeg compilation failures by installing missing system dependencies and configuring correct build flags for required codec libraries.

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Handbrake: Forcing Frame Size for Video Extraction

Force specific frame sizes in Handbrake by unchecking Keep Aspect Ratio in the Dimensions tab to ensure compatibility with legacy players or strict platforms.

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