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• Scale with scale_vaapi and than pad, got error. Seems ok without "pad"

  24 mai 2023, par huangda1982

  My computer : customized Linux, haswell
I am trying to scale 1280x720 video to 640x450 in 640x480 frame with black borders. To do so, I run this command :

  


  ffmpeg -v warning -hide_banner -init_hw_device vaapi=vaapi0:/dev/dri/renderD128 -hwaccel vaapi -hwaccel_output_format vaapi -hwaccel_device vaapi0 -filter_hw_device vaapi0 -i 'my_video.mp4' -vf 'scale_vaapi=640:450,pad=640:480:0:14' -c:v h264_vaapi -q:v 18 -profile:v main -level 3.1 -c:a aac -q:a 3 -f mp4 out.mp4 -loglevel verbose


  


  And I got this error :

  


  Impossible to convert between the formats supported by the filter &#x27;Parsed_scale_vaapi_0&#x27; and the filter &#x27;auto_scaler_0&#x27;<br />&#xA;Error reinitializing filters!&#xA;Failed to inject frame into filter network: Function not implemented&#xA;Error while processing the decoded data for stream #0:0&#xA;

  


  When I removed the ",pad=640:480:0:14" part, the command continued. I pressed ctrl-c, and did not check the result.

  


  "-q:v 18", "-level 3.1" and "-q:a" options seem not work.

  


  Full message :

  


  [h264 @ 0x55dfeb529340] Reinit context to 1280x720, pix_fmt: yuv420p
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'my_video.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: mp41
    creation_time   : 1970-01-01T00:00:00.000000Z
    encoder         : PotEncoder
  Duration: 00:22:45.01, start: 0.000000, bitrate: 3264 kb/s
  Stream #0:0(und): Video: h264 (Constrained Baseline), 1 reference frame (avc1 / 0x31637661), yuv420p(left), 1280x720 [SAR 1:1 DAR 16:9], 3068 kb/s, 23.98 fps, 23.98 tbr, 1199 tbn, 47.96 tbc (default)
    Metadata:
      creation_time   : 1970-01-01T00:00:00.000000Z
      handler_name    : VideoHandler
      vendor_id       : [0][0][0][0]
  Stream #0:1(und): Audio: mp3 (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 192 kb/s (default)
    Metadata:
      creation_time   : 1970-01-01T00:00:00.000000Z
      handler_name    : SoundHandler
      vendor_id       : [0][0][0][0]
File 'out.mp4' already exists. Overwrite? [y/N] y
Stream mapping:
  Stream #0:0 -> #0:0 (h264 (native) -> h264 (h264_vaapi))
  Stream #0:1 -> #0:1 (mp3 (mp3float) -> aac (native))
Press [q] to stop, [?] for help
[h264 @ 0x55dfeb553e40] Reinit context to 1280x720, pix_fmt: vaapi_vld
[graph_1_in_0_1 @ 0x55dfeb6b7580] tb:1/44100 samplefmt:fltp samplerate:44100 chlayout:0x3
[graph 0 input from stream 0:0 @ 0x55dfebb4d000] w:1280 h:720 pixfmt:vaapi_vld tb:1/1199 fr:1199/50 sar:1/1
[auto_scaler_0 @ 0x55dfebb4f940] w:iw h:ih flags:'bicubic' interl:0
[Parsed_pad_1 @ 0x55dfebb4c700] auto-inserting filter 'auto_scaler_0' between the filter 'Parsed_scale_vaapi_0' and the filter 'Parsed_pad_1'
Impossible to convert between the formats supported by the filter 'Parsed_scale_vaapi_0' and the filter 'auto_scaler_0'
Error reinitializing filters!
Failed to inject frame into filter network: Function not implemented
Error while processing the decoded data for stream #0:0
[AVIOContext @ 0x55dfeb5522c0] Statistics: 0 seeks, 0 writeouts
[aac @ 0x55dfeb551600] Qavg: 354.000
[aac @ 0x55dfeb551600] 2 frames left in the queue on closing
[AVIOContext @ 0x55dfeb530500] Statistics: 1144787 bytes read, 2 seeks
Conversion failed!


  


• How to scale video up and then put image as an overlay with FFMPEG

  13 mars 2023, par Dean Van Greunen

  I'm scaling a video to 920x692.
Then I want to resize an image and put it in the button corner of the video.
Here is my code, using nodejs with the ffmpeg fluent library import.
I'm having issue with the complex filters.

  


  // load imports
const ffmpeg = require("fluent-ffmpeg");
const sizeOf = require("image-size");

// load files
const inputFile = "./test.mp4";
const outputFile = "./output.mp4";
const watermarkFile = "./watermark.png";

// load output video size/res
const outputW = 920;
const outputH = 692;

// load output options
const outputOptions = [
  "-movflags faststart",
  "-c:v libx264",
  "-crf 21",
  "-preset medium",
  "-r 30",
  "-c:a aac",
  "-ac 2",
  "-strict -2",
  "-f mp4",
  "-af volume=6.0",
  "-map [out]",
  "-map 1:a",
]

// get the watermark image size
const watermarkFileSize = sizeOf(watermarkFile);
const watermark_w = watermarkFileSize.width;
const watermark_h = watermarkFileSize.height;

// calculate new image size based on height being 64px
const newWatermark_n_h = 64;
const newWatermark_n_w = Math.floor(
  (watermark_w * newWatermark_n_h) / watermark_h
);

// calculate overlay offset position (to bottom right corner)
const watermark_x_offset = Math.floor(outputH - newWatermark_n_w);
const watermark_y_offset = Math.floor(
  outputW - newWatermark_n_h
);

// define complex filters (these seem to not work)
const scaleVideo = "[1]scale=920:692[inner];[0][inner]overlay=0:0:[out]";
const applyOverlay = "[2]scale=" + newWatermark_n_w + ":" + newWatermark_n_h + "[inner];[out][inner]overlay=" + watermark_x_offset + ":" + watermark_y_offset + ":[out]",

// apply inputs, complex filters and output file
ffmpeg()
.input(inputFile)
.input(watermarkFile)
.complexFilter([
  scaleVideo,
  applyOverlay
]).outputOptions(outputOptions)
.saveToFile(outputFile);


  


• ffmpeg overlay with scale in filter_complex

  2 février 2023, par anders larsson

  im trying to get the scale in video input 0 to scale down but get error

  


  exec_static /usr/bin/ffmpeg -threads 1 -i "rtmp ://url" -stream_loop -1 -i /slider.m
p4 -filter_complex "[0:v]scale=1920:1080[1:v] overlay=20:main_h-overlay_h-80" -c:v h264 -c:a aac -b:v 1980k -b:a 64k -an -tune zerolatency -preset ultrafast -f flv rtmp ://localhost:1935/live/std 2>>/var/log/nginx/ffmpeg-std.lo
g ;

  


  [AVFilterGraph @ 0x556874510700] Unable to parse graph description substring : "overlay=20:main_h-overlay_h-80"
Error initializing complex filters.

  


  i was trying to scale down the video input

  


  Input #0, flv, from 'rtmp ://url' :
Metadata :
displayWidth : 2304
displayHeight : 1296
Duration : 00:00:00.00, start : 53669.778000, bitrate : N/A
Stream #0:0 : Data : none
Stream #0:1 : Video : h264 (Baseline), yuv420p(progressive), 2304x1296, 12 fps, 12 tbr, 1k tbn
Stream #0:2 : Audio : aac (LC), 16000 Hz, mono, fltp