All Questions
171
questions
2
votes
1
answer
248
views
Why am I getting pixelated videos in FFmpeg when converting to a GIF?
I want to encode this WEBM video:
https://buggem.github.io/connecting.webm
I have been noticing the fact that FFmpeg has been played up when it comes to quality.
I am doing WEBM to GIF, if that ...
- 123
1
vote
1
answer
447
views
Want to understand encoding with Opus for maximum audio quality in FFmpeg. Bitrate stuck at 96kbps?
I'm sort of new to FFmpeg, but I got much of the basics down. I am trying to understand how to encode audio with Opus. My knowledge is a bit weak when it comes to audio, bitrates, sample rate and Hz.
...
- 13
0
votes
1
answer
150
views
Complex ffmpeg multi-encode/streamcopy/muxing scenario: is this actually doable?
I'm trying to do multiple muxing/re-encode/copy operations on an input video with ffmpeg and have run into roadblocks with the methods I've tried; before I continue testing, I want to confirm whether ...
- 3
0
votes
1
answer
1k
views
Constructing encoding statements using ffmpeg QSV and Intel ARC card
I purchased an Intel ARC A770 with the intent to test hardware encoding with AV1 and HEVC under Linux. Being newer to ffmpeg, I need help constructing ffmpeg statements to engage the Intel QSV ...
1
vote
1
answer
178
views
FFmpeg - Use same encoded audio for multiple outputs
I have an input file that I am encoding with multiple output resolutions. I want to use the exact same audio encoding parameters for each output video file (-c:a aac -b:a 64k -ac 1). For a performance ...
- 466
0
votes
0
answers
274
views
How to convert in ffmpeg at a constant bitrate?
I recently began encoding some of my videos, but can't seem to make ffmpeg encode at a constant bitrate as all my videos turn out to have variable bitrates. I have tried multiple commands, but nothing ...
- 11
0
votes
1
answer
180
views
FFmpeg: How to encoding h264 mkv files in h265 mkv and keep the 2 subtitles streams?
I've lots of mkv files in h264 format with 2 languages of subtitle, and I'm trying to convert them in h265 (with cuda) and keep the 2 subtitles streams.
I've tried that:
ffmpeg -i "xxx.mkv" -...
- 11
0
votes
0
answers
190
views
FFMPEG encode interlaced frames
I try to encode incoming frames using FFMPEG to h264 and write it to an SD card. I get the raw frames as memory buffers from hardware and then use the FFMPEG C API to encode those. Encoding is running....
- 101
1
vote
1
answer
1k
views
ffmpeg video encoding has no audio
When I convert any video in ffmpeg - e.g. mp4 to mkv, mkv to mkv - I lose audio for some reason
here are the parameters I originally used:
ffmpeg -i input.mkv -vf scale=640x480 -vcodec libx264 -...
1
vote
0
answers
62
views
Spliting video with ffmpeg producing wrong durations
I'm currently using a framework where I have to split a video (originally encoded with HEVC video and AAC audio) in multiple parts to process them separately. Then the final result is obtained by ...
- 11
0
votes
0
answers
59
views
Encoding MKV File Without Changing Header Information
I captured a video using a Kinect Azure SDK device. This captured video (.mkv container) has three tracks: Color, Depth and IR. I extracted the Color track using MKVToolNIX. I could playback this RGB ...
0
votes
1
answer
488
views
ffmpeg and QSV works on three PCs, but not the fourth
As the title suggests, I've used ffmpeg with x264_qsv hardware acceleration on two Windows 7 systems and one Windows 10 system successfully. I have now tried to set it up on a fourth system which is ...
- 165
2
votes
1
answer
1k
views
ffmpeg nvenc throws an error after I modified an x264 command
I'm trying to convert this command to work on nvenc hvec video encoder to just make it faster and utilize my 3060:
ffmpeg -i video.mkv -i logo.png -filter_complex "[1]format=rgba,...
- 25
0
votes
0
answers
343
views
How to fix "Could not find tag for codec timed_id3 in stream #0"?
ffmpeg gives me the following error for some videos.
Could not find tag for codec timed_id3 in stream #0, codec not currently supported in container
Could not write header for output file #0 (...
- 101
0
votes
0
answers
248
views
Rotation metadata not changing when encoding with ffmpeg
[UPD: Checking metadata with exiftool -rotation]
Been struggling for a few days, here is the setup:
ffmpeg -i input.mp4 -c copy -metadata:s:v:0 rotate="-90" output.mp4
changes the output....
