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How to change mp4 aspect ratio to 16:9 using ffmpeg? could an expert help me change the aspect ratio of original mp4 video to 16:9 using ffmpeg (without losing video quality) for re uploading to YouTube? Thanks in advance ?

FFmpeg audio channel rematrix (5.1 to stereo) - Stack Overflow The posted solution completely discards all audio channels except for the first 2. For a 16 channel audio source it's unclear how to mix this manually since I don't know what each channel means, but if you just rely on ffmpeg's built in audio channel conversion it should be better than just ignoring all channels but the first two. $ ffmpeg -i Capture0000.mov -c:v copy -ac 2 stereo_output.mp4 ...

How to 2-pass h264 with CRF and maximum bitrate with ffmpeg? This forcibly limits the freedom of the CRF algorithm with respect to its upper limit of bits-per-frame. Now, take that concept and think about applying ffmpeg's 2-pass model to it. Running 2-pass on capped CRF (aka Constrained CRF) is redundant and a waste of time. First, how would you constitute the 2nd pass?

ffmpeg - Сохранение потока из m3u8 плейлиста - Stack Overflow на русском В принципе логика понятна. ... Но попался мне m3u8 плейлист с отсутствующим сегментом - нулевым. ffmpeg ругается (Failed to open segment of playlist 0) и сворачивает выполнение задачи. Вот, например, начало ...

Change default audio track in mp4 video Use FFmpeg: ffmpeg -i input.mp4 -map 0 -c copy -disposition:a:0 0 -disposition:a:1 default output.mp4 Audio tracks (streams) are numbered from 0. Supposing the input video has 2 audio streams, and the default audio stream is 0, we need to remove the “default” disposition from it (by setting it to 0: -disposition:a:0 0) and set it to the audio stream 1 (by setting it to “default ...

linux - ffmpegを手動でUbuntu18.04にインストールしたい - スタック・オーバーフロー なるべく環境を汚さずにインストールしたくて、自身で作成したフォルダにffmpegのファイルをDLしてそこにPATHを通す形でソフトを使用したいのですが、公式サイトのどのファイルをDLしてPATHを通したら良いのか分かりません。 多くの解説サイトではapt install ffmpegでの方法しか書かれていません ...

FFMPEG: Too many packets buffered for output stream 0:1 I want to add a logo to a video using FFMPEG. I encountered this error: "Too many packets buffered for output stream 0:1.", "Conversion Failed.". I tried with diffent pictures and videos, always go...

Maintaining aspect ratio with FFmpeg - Stack Overflow I need to convert a bunch of video files using FFmpeg. I run a Bash file that converts all the files nicely, however there is a problem if a file converted is not in 16:9 format. As I am fixing th...

Retrieving and Saving media metadata using FFmpeg [closed] I combine bash, ffmpeg, sed to write to a file only the basic metadata information that interests me: file type and name, title (s), video-, audio- and subtitlestreams details.

Correct usage of thread_queue_size in ffmpeg - Stack Overflow Two questions, two answers: As @Gyan has said in the comments, thread_queue_size is applied to the first input specified after it. That means for my ffmpeg command as given in the question: ffmpeg -f x11grab -thread_queue_size 1024 -r 25 -s 1280x720 -i :0.0+320,236 \ -f alsa -thread_queue_size 1024 -i hw:1 -vcodec huffyuv screencast.mkv The problem here seems to be that I save an uncompressed ...