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• How to correctly use h264_amf on Windows ?

  27 octobre 2022, par Harshiv

  I'm trying to use hardware encoding with FFMPEG on Windows 10 with AMD Radeon r5 M330 DGPU on laptop : HP-AC026-TX. FFMPEG version is 5.1.2-full_build-www.gyan.dev from gyan.dev. I'm using this :

  


  fmpeg ^
    -hide_banner ^
    -v verbose ^
    -i "%1" ^
    -c:v h264_amf -acodec copy -y out.mp4


  


  but it fails with :

  


  [h264_amf @ 000001fb84d80b80] AMF initialisation succeeded via D3D11.
[h264_amf @ 000001fb847ab3c0] CreateComponent(AMFVideoEncoderVCE_AVC) failed with error 36
Error initializing output stream 0:0 -- Error while opening encoder for output stream #0:0 - maybe incorrect parameters such as bit_rate, rate, width or height


  


  The arguments seem as generic as I could hope, FFMPEG should use sensible defaults, so I can't Understand why it is failing.
Entire FFMPEG output is :

  


  [h264 @ 000001fb84706c40] Reinit context to 1920x1088, pix_fmt: yuv420p
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '1366_pngl_20220816_161558.mp4':
  Metadata:
    major_brand     : mp42
    minor_version   : 0
    compatible_brands: isommp42
    creation_time   : 2022-08-16T10:51:42.000000Z
    com.android.version: 11
    com.android.capture.fps: 30.000000
  Duration: 00:03:41.33, start: 0.000000, bitrate: 7517 kb/s
  Stream #0:0[0x1](eng): Video: h264 (High), 1 reference frame (avc1 / 0x31637661), yuv420p(tv, bt709, progressive, left), 1920x1080 (1920x1088), 7259 kb/s, SAR 1:1 DAR 16:9, 29.96 fps, 29.99 tbr, 90k tbn (default)
    Metadata:
      creation_time   : 2022-08-16T10:51:42.000000Z
      handler_name    : VideoHandle
      vendor_id       : [0][0][0][0]
  Stream #0:1[0x2](eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 256 kb/s (default)
    Metadata:
      creation_time   : 2022-08-16T10:51:42.000000Z
      handler_name    : SoundHandle
      vendor_id       : [0][0][0][0]
Stream mapping:
  Stream #0:0 -> #0:0 (h264 (native) -> h264 (h264_amf))
  Stream #0:1 -> #0:1 (copy)
Press [q] to stop, [?] for help
[h264 @ 000001fb84787400] Reinit context to 1920x1088, pix_fmt: yuv420p
[graph 0 input from stream 0:0 @ 000001fb84cfd780] w:1920 h:1080 pixfmt:yuv420p tb:1/90000 fr:90000/3001 sar:1/1
[h264_amf @ 000001fb84d80b80] AMF initialisation succeeded via D3D11.
[h264_amf @ 000001fb847ab3c0] CreateComponent(AMFVideoEncoderVCE_AVC) failed with error 36
Error initializing output stream 0:0 -- Error while opening encoder for output stream #0:0 - maybe incorrect parameters such as bit_rate, rate, width or height
[AVIOContext @ 000001fb846f89c0] Statistics: 0 bytes written, 0 seeks, 0 writeouts
[AVIOContext @ 000001fb846f3f40] Statistics: 371902 bytes read, 3 seeks
Conversion failed!


  


  What should I do to make hardware encoding work ?

  


• ffmpeg convert images to video and add audio in one command

  9 novembre 2022, par user2108258

  I have two commands that I would like consilidate to a 1 liner.
Here are the two queries.

  


  Here are the steps i need help

  


  

  1. create a video based on a directory of jpegs

  


  


  ffmpeg -f image2 -pix_fmt yuv420p -r 10 -s 1080x1920 -i 'Roach spray high-25263/%d.jpg' -vf "pad=ceil(iw/2)*2:ceil(ih/2)*2" -crf 25 -vcodec h264 'Roach spray high.mp4' -y


  


  

  2. Merge audio with video from step 1

  


  


  ffmpeg -stream_loop -1 -i 'Roach spray high.mp4' -i '/beats/2022/Roach spray high.mp3' -shortest -map 0:v:0 -map 1:a:0 '/videos/Roach spray high/Roach spray high.mp4' -y


  


  Is there a way to combine these two steps into 1 ?

  


• How to encode video with ffmpeg using AMD h264_amf

  10 novembre 2022, par Ivy Growing

  Given :

  


  

  • Win10

  


  • AMD CPU

  


  • Video capturing card Avermedia Live Gamer Extreme 3

  


  • ffmpeg versions and encoders :

  


  


  >ffmpeg.exe -encoders | find "264"
ffmpeg version 5.1-full_build-www.gyan.dev Copyright (c) 2000-2022 the FFmpeg developers
// cut
 V....D libx264              libx264 H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 (codec h264)
 V....D libx264rgb           libx264 H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 RGB (codec h264)
 V....D h264_amf             AMD AMF H.264 Encoder (codec h264)
 V....D h264_mf              H264 via MediaFoundation (codec h264)
 V....D h264_nvenc           NVIDIA NVENC H.264 encoder (codec h264)
 V..... h264_qsv             H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 (Intel Quick Sync Video acceleration) (codec h264)


  


  Required to capture the video into H.264 encoded file using AMD's hardware accelerator in the CPU (AMF, or VCE).
Tried : ffmpeg -y -f dshow -rtbufsize 2002000k -framerate 30 -i video="Live Gamer EXTREME 3"  -t 00:00:10  -c:v h264_amf output.ts
Result :

  


  Input #0, dshow, from 'video=Live Gamer EXTREME 3':
  Duration: N/A, start: 88548.973998, bitrate: N/A
  Stream #0:0: Video: rawvideo (YUY2 / 0x32595559), yuyv422(tv, bt709/bt709/unknown), 1280x720, 30 fps, 30 tbr, 10000k tbn
Stream mapping:
  Stream #0:0 -> #0:0 (rawvideo (native) -> h264 (h264_amf))
Press [q] to stop, [?] for help
[h264_amf @ 000002404328c700] DLL amfrt64.dll failed to open
Error initializing output stream 0:0 -- Error while opening encoder for output stream #0:0 - maybe incorrect parameters such as bit_rate, rate, width or height
Conversion failed!


  


  For some reason ffmpeg uses resolution 1280x720... When trying to specifiy the capture card resolution the following error appears :

  


  >ffmpeg -y -f dshow -rtbufsize 2002000k -framerate 30 -video_size 3840x2160 -i video="Live Gamer EXTREME 3" -r 30 -t 00:00:10   -c:v h264_amf -f mpegts output.ts
//cut
[dshow @ 0000029d7c0f84c0] Could not set video options
video=Live Gamer EXTREME 3: I/O error


  


  This is not unique error for Avermedia card. The same error appears with Dell web cam and for Magewell.

  


  From this answer the extra flags to be used with h264_amf. I guessed the default values should be good enough. It seems something needs to be configured or initialized when using AMF/VCE.

  


  The video encoding in software (without AMF) works just fine but loads the CPU. The goal is using dedicated hardware module and release computational power of the CPU for the other apps.

  


  Command example will be appreciated.