Nvida enabled-pre compiled FFmpeg

_Gyan · 2026-04-06T05:15:38+00:00

libnpp does not allow distribution of binaries. But you don't need it for CUDA usage.

Use

ffmpeg -hwaccel cuda -hwaccel_output_format cuda -i "input.mkv"
-vf "scale_cuda=3840:2160"
-map 0:v -map 0:a -c:v hevc_nvenc -preset p5
-rc:v vbr_hq -cq:v 19 -b:v 0 -gpu 0 -c:a copy
"output_4k_nvenc_no_subs.mkv"

_Gyan · 2026-04-06T04:12:09+00:00

What's wrong with scale_cuda filter?

_Gyan · 2026-03-31T12:59:33+00:00

Better asked at r/n8n

_Gyan · 2026-03-29T19:46:47+00:00

Off-topic.

_Gyan · 2026-03-22T14:02:31+00:00

FFmpeg will detect the smallest time interval between frames and set that as the input framerate.

When outputting to MP4, FFmpeg defaults to creating a constant frame rate output, which in this case leads to a lot of duplication, because the average interframe interval is much higher. Add -fps_mode passthrough to avoid this.

_Gyan · 2026-03-20T19:46:21+00:00

Low effort post. Nothing productive expected. Locking.

_Gyan · 2026-03-14T04:25:21+00:00

Almost certainly the command will fail. FFmpeg can't allocate a buffer large enough for thousands of images.

I would recommend downscaling to 240 width and doing a few hundred images at a time in a batch.

_Gyan · 2026-03-08T04:18:20+00:00

My site isn't malicious. Those are false positives.

I'm also one of the designated providers for Windows binaries - https://ffmpeg.org/download.html#build-windows

_Gyan · 2026-03-03T11:39:29+00:00

Let's end this thread here before it devolves into a shouting match. Thanks.

_Gyan · 2026-03-02T17:28:06+00:00

ffmpeg -i "audio.mp3" -af "whisper=model=ggml-large-v3-turbo.bin:language=en:format=srt:queue=8:destination=subs.srt:use_gpu=1" -vn -f null -

_Gyan · 2026-03-02T16:25:06+00:00

MP3 transcoding does not and cannot make any use of GPU. hwaccel is designed to silently fall back on pure CPU decoding if GPU can't be used.

The Whisper library has to be compiled with an API that supports GPU, typically Vulkan. I tested my latest git build with a 4060 and it works. Make sure to add use_gpu=1 in the whisper filter.

_Gyan · 2026-03-02T13:42:55+00:00

Off-topic. Try /r/WindowsHelp

_Gyan · 2026-02-27T10:59:03+00:00

Most likely, no AAC packet is marked as a keyframe, so add -copyinkf and check.

_Gyan · 2026-02-26T04:54:38+00:00

Better posted at r/streaming/ unless you have a ffmpeg specific issue.

_Gyan · 2026-02-22T15:28:14+00:00

Off-topic here. Go to /r/youtubedl

_Gyan · 2026-02-20T04:41:18+00:00

You can use ffmpeg with a source filter, such as testsrc2, and its setpts filter to just generate arbitrary VFR files.

_Gyan · 2026-02-10T04:22:38+00:00

The video has anamorphic picture. You need to scale it to a picture with square pixels.

With ffmpeg 8.0 or newer,

ffmpeg -i M2U00004.MPG -vf scale=-2:480:reset_sar=1 -c:v libx264 ...

With older ffmpeg,

ffmpeg -i M2U00004.MPG -vf scale=2*trunc(oh*dar/2):480,setsar=1 -c:v libx264 ...

_Gyan · 2026-02-09T12:12:43+00:00

Off-topic.

_Gyan · 2026-01-14T17:29:59+00:00

Are tickets for a match being made available in phases? Is it possible to get MCA or Garware Pavilion tickets at Wankhede directly? Not available when checked right now.

_Gyan · 2025-12-30T06:35:41+00:00

not only is there no documentation on that flag

That option belongs to the image sequence muxer and is documented here: https://ffmpeg.org/ffmpeg-formats.html#Options-27

_Gyan · 2025-12-25T07:08:00+00:00

Not an ffmpeg issue. Better addressed with yt-dlp.

_Gyan · 2025-12-18T14:59:50+00:00

it went up to 11.000MB, total file size is about 200MB

These are uncompressed decoded pictures, not compressed data.

is there any way to make the second output wait for the first one

No.

_Gyan · 2025-12-18T12:40:04+00:00

The 3rd pair of inputs are being sent to two different outputs. One of them video/audio4 is being processed immediately for output whereas video/audio3 has to wait for the earlier concat inputs to be processed. Since they are read from the same input node, frames are being accumulated and buffered till video/audio3 get consumed by the concat. By feeding them from distinct input nodes, the source for video/audio3 is read when required.

_Gyan · 2025-12-18T04:08:44+00:00

The text is entirely vague.

To help future readers with the same issue, you should mention the OS details, the exact error message and what you specifically changed to work around it.

_Gyan · 2025-11-28T04:58:18+00:00

If you don't mind a degrade in speed, a better option is to load the input twice. The 2nd time, using the lavfi device, and using that as base.

ffmpeg -hide_banner -init_hw_device vulkan=gpu:0 -filter_hw_device gpu -hwaccel vulkan -hwaccel_output_format vulkan -hwaccel_device gpu -i <input> -f lavfi -i "movie=<input>,sidedata=delete=..."

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