All Questions
176
questions
0
votes
0
answers
14
views
Avidemux loads vertical video in horizontal orientation
I have recorded a video while holding phone vertically. It opens vertically on phone, as well as on PC, in VLC. However, when I load it in Avidemux it rotates the video to horizontal aspect rate.
I ...
- 241
1
vote
0
answers
63
views
How can I remove every nth frame from raw video using ffmpeg?
I have many cine films that have been digitally converted. They have been converted as a 25 fps with 2 frames in every 23 duplicated. I need to remove the duplicated frames using a bitstream filter so ...
- 11
1
vote
0
answers
67
views
Out-of-order frames when using FFmpeg to download DASH stream
I'm trying to use ffmpeg to download a DASH stream. It works OK but it seems like in the output file there are some frames that are out-of-order (e.g. for some frames the pts value is lower than the ...
- 11
1
vote
0
answers
99
views
ffmpeg extremely slow HEVC without any major changes in the system
I have the same dedicated NAS machine for a while now with AMD Ryzen 7 3700X 8-Core it's not the strongest but more than enough for my home NAS usage.
I also use the same machine to re-encode h264 and ...
- 379
0
votes
0
answers
82
views
Having multiple issues when attempting to convert h.264 files to h.265 using HEVC
I am using RiaanAspeling's script for the conversion of my library that I currently have, most of it is H264 and I want to convert it to H265 to reduce the size of the files that I have hosted on my ...
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votes
0
answers
29
views
Fail to convert png from 3gp
Here is the command I used to convert the video.
ffmpeg -skip_frame nokey -i input.3gp -vsync vfr -frame_pts true output.png
(The command can't be modified because this is a code section captured from ...
- 1
0
votes
0
answers
152
views
How do you create an MPTS file on ffmpeg with two h264 inputs?
I need to contain two h.264 files (same video, different resolutions) within the same MPTS container, but I can't quite figure out how to use two inputs to create one output.
I tried using ffmpeg -i (...
- 1
1
vote
0
answers
372
views
How to Speed Up Complex Text Overlay in FFmpeg
I'm using FFmpeg to overlay text on videos, and I find the process to be quite slow. The operation becomes especially slow when I add complex drawtext filters. I'm running this on a MacBook Pro with ...
- 11
0
votes
0
answers
163
views
h264_qsv is choppy when live streaming
I am trying to do live streaming of video games using h264_qvs, but is choppy when compared to libx264. Here are some variations of the ffmpeg command I am running:
Variation 1
ffmpeg.exe -y -hwaccel ...
- 141
0
votes
1
answer
911
views
Edit video h.264 metadata without encode
How can I edit these video (h264) parameters (on pic) without encode?
VUI parameters "video_signal_type_present_flag" and "colour_description_present_flag".
As far as I understand, ...
- 1
0
votes
0
answers
704
views
How to set H.264 metadata in ffmpeg (fixed_frame_rate_flag)
I would like to set the fixed_frame_rate_flag in the H.264 metadata so that MediaInfo will report a constant frame rate when scanning the file.
Supposedly I can set that flag using the bitstream ...
- 191
1
vote
1
answer
292
views
FFmpeg with Quicksync: unable to hardware decode file
I'm trying to convert a h264 video to h265 using hardware decoding/decoding of the iGPU (Quicksync). Decoding does not work throwing the error "Impossible to convert between the formats supported ...
- 21
1
vote
2
answers
521
views
Smart trimming long videos with FFmpeg
I want to be able to trim a little bit off the beginning and end of a long video with FFmpeg. I can do this with a command like:
ffmpeg -i input.mp4 -ss 13 -to 59 output.mp4
FFmpeg will seek ...
- 307
0
votes
1
answer
1k
views
Windows ffmpeg hardware accelerated video encoding FAILS using codec hevc_amf but works with codec h264_amf
I'm running ffmpeg on Windows 10 on a machine with an AMD Radion HD 7700. Hardware accelerated h.264 works fine while HEVC encoding fails. The version of ffmpeg is:
ffmpeg version 5.1.2-...
- 321
0
votes
1
answer
281
views
FFMPEG, producing stream, wish to write to disk while streaming, segmenting
)
I have fought the long battle of getting somehow familiar with this wonderful beast of a thing, FFMPEG. I have coped with several things, learned that I will never get old enough to at least master ...
- 1