I am transcoding live video using intel flex 140 cards, and the video mostly stays one resolution/framerate but sometimes ads come in that are in different resolutions, and that either crashes ffmpeg (in libmfx) or stops ffmpeg.
For example, an input stream starts out at 1280x720p@60 then eventually changes 1920x1080i@30 and then back to 1280x720p@60. I've tried using many ways to make FFmpeg survive the resolution change: - software decoding, then vpp_qsv (for deinterlacing and scaling), then h264_qsv... this crashes inside libmfx if a resolution change happens - hardware decoding using vaapi, then hwmap=derive_device=qsv, then vpp_qsv (for deinterlacing and scaling), then h264_qsv this just stops with this message: [graph 0 input from stream 0:0 @ 0x561180fc1ac0] w:1920 h:1080 pixfmt:vaapi tb:1/90000 fr:60000/1001 sar:1/1 [scaler_out_0_0 @ 0x561181e57ac0] w:1280 h:720 flags:'' interl:0 [auto_scale_0 @ 0x561181430e80] w:iw h:ih flags:'' interl:0 [format @ 0x561181e6dd80] auto-inserting filter 'auto_scale_0' between the filter 'scaler_out_0_0' and the filter 'format' Impossible to convert between the formats supported by the filter 'scaler_out_0_0' and the filter 'auto_scale_0' - I also tried software decoding, then using vaapi deinterlacing, and vaapi scaling, this exits with the same error as above. - I should note that I can't use qsv decoding because I noticed qsv decoding strips off a53 captions, which I need. Any ideas on what combination of decoding, deinterlacing/scaling, and encoding I can use with these flex 140 cards that can handle a resolution change on the input. Here is my ffmpeg command line when I'm using vaapi to decode and qsv to encode: ffmpeg -y -threads 2 -nostats -nostdin -loglevel verbose -progress pipe:1 -probesize 5M -filter_threads 4 -threads 2 -fflags +genpts -fflags discardcorrupt -hwaccel_output_format vaapi \ -qsv_device /dev/dri/card1 -init_hw_device qsv=hw -filter_hw_device hw -hwaccel vaapi \ -i "udp://@225.105.0.28:10102??fifo_size=2146880&buffer_size=65535&timeout=800000" \ -threads 2 -c:a:0 ac3 -dialnorm -28 -threads 2 -ac:a:0 6 -ar:a:0 48000 -b:a:0 384k -flush_packets 0 \ -filter_complex "[0:v:0]fps=60000/1001,hwmap=derive_device=qsv,vpp_qsv=deinterlace=2:w=1280:h=720[vout]" \ -map "[vout]" -map "0:a:0" \ -c:v h264_qsv -b:v 3000k -minrate:v 3000k -maxrate:v 3000k -bufsize:v 6000k -preset veryfast -scenario livestreaming -strict_gop 1 -forced_idr 1 -profile:v high -level:v 4.2 -bf:v 0 -g:v 30 \ -f mpegts -muxrate 3863560 -pes_payload_size 1528 "udp://@225.105.0.35:10102?pkt_size=1316&fifo_size=90000&bitrate=3863560&burst_bits=10528&ttl=64" _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
