August 2024 - ffmpeg-user - lists.ffmpeg.org

has setpts filter been changed?
by William C Bonner 21 Mar '25

21 Mar '25

I use setpts to speed up some video that I'm concatenating from my car's dashcam. The process is consistent and hasn't changed recently. Here's an example command line: C:\Windows\ffmpeg.exe -hide_banner -i D:\ROAV\MOVIE\2024_0803_173613_229.MP4 -i D:\ROAV\MOVIE\2024_0803_173713_230.MP4 -i D:\ROAV\MOVIE\2024_0803_173813_231.MP4 -i D:\ROAV\MOVIE\2024_0803_173913_232.MP4 -i D:\ROAV\MOVIE\2024_0803_174013_233.MP4 -i D:\ROAV\MOVIE\2024_0803_174113_234.MP4 -i D:\ROAV\MOVIE\2024_0803_174213_235.MP4 -i D:\ROAV\MOVIE\2024_0803_174313_236.MP4 -i D:\ROAV\MOVIE\2024_0803_174413_237.MP4 -i D:\ROAV\MOVIE\2024_0803_174513_238.MP4 -i D:\ROAV\MOVIE\2024_0803_174613_239.MP4 -i D:\ROAV\MOVIE\2024_0803_174713_240.MP4 -i D:\ROAV\MOVIE\2024_0803_174813_241.MP4 -i D:\ROAV\MOVIE\2024_0803_174913_242.MP4 -i D:\ROAV\MOVIE\2024_0803_175013_243.MP4 -i D:\ROAV\MOVIE\2024_0803_175113_244.MP4 -i D:\ROAV\MOVIE\2024_0803_175213_245.MP4 -i D:\ROAV\MOVIE\2024_0803_175313_246.MP4 -i D:\ROAV\MOVIE\2024_0803_175413_247.MP4 -i D:\ROAV\MOVIE\2024_0803_175513_248.MP4 -i D:\ROAV\MOVIE\2024_0803_175613_249.MP4 -i D:\ROAV\MOVIE\2024_0803_175713_250.MP4 -i D:\ROAV\MOVIE\2024_0803_175813_251.MP4 -i D:\ROAV\MOVIE\2024_0803_175913_252.MP4 -i D:\ROAV\MOVIE\2024_0803_180013_253.MP4 -i D:\ROAV\MOVIE\2024_0803_180113_254.MP4 -i D:\ROAV\MOVIE\2024_0803_180213_255.MP4 -filter_complex [0:v][1:v][2:v][3:v][4:v][5:v][6:v][7:v][8:v][9:v][10:v][11:v][12:v][13:v][14:v][15:v][16:v][17:v][18:v][19:v][20:v][21:v][22:v][23:v][24:v][25:v][26:v]concat=n=27:v=1[v];[v]setpts=(1/60)*PTS,drawtext=fontfile=C\\:/Windows/Fonts/consola.ttf:fontcolor=white:fontsize=80:y=main_h-text_h-50:x=50:text=WimsWorld[o] -map [o] -map_metadata -1 -c:v libx265 -crf 23 -preset veryfast -movflags +faststart -bf 2 -g 15 -pix_fmt yuv420p -n D:\ROAV\20240803-BMW.mp4 The important part is setpts=(1/60)*PTS which should convert 1 minute of the source video to 1 second in the destination I noticed that watching recent videos strangely seemed much smoother, then realized that they were also significantly larger. https://trac.ffmpeg.org/wiki/How%20to%20speed%20up%20/%20slow%20down%20a%20… still says that using this method will drop frames, but when I ran ffprobe on the current file I got: C:\Users\Wim>ffprobe d:\ROAV\20240803-BMW.mp4 ffprobe version 2024-07-18-git-fa5a605542-full_build-www.gyan.dev Copyright (c) 2007-2024 the FFmpeg developers built with gcc 13.2.0 (Rev5, Built by MSYS2 project) configuration: --enable-gpl --enable-version3 --enable-static --disable-w32threads --disable-autodetect --enable-fontconfig --enable-iconv --enable-gnutls --enable-libxml2 --enable-gmp --enable-bzlib --enable-lzma --enable-libsnappy --enable-zlib --enable-librist --enable-libsrt --enable-libssh --enable-libzmq --enable-avisynth --enable-libbluray --enable-libcaca --enable-sdl2 --enable-libaribb24 --enable-libaribcaption --enable-libdav1d --enable-libdavs2 --enable-libopenjpeg --enable-libquirc --enable-libuavs3d --enable-libxevd --enable-libzvbi --enable-libqrencode --enable-librav1e --enable-libsvtav1 --enable-libvvenc --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs2 --enable-libxeve --enable-libxvid --enable-libaom --enable-libjxl --enable-libvpx --enable-mediafoundation --enable-libass --enable-frei0r --enable-libfreetype --enable-libfribidi --enable-libharfbuzz --enable-liblensfun --enable-libvidstab --enable-libvmaf --enable-libzimg --enable-amf --enable-cuda-llvm --enable-cuvid --enable-dxva2 --enable-d3d11va --enable-d3d12va --enable-ffnvcodec --enable-libvpl --enable-nvdec --enable-nvenc --enable-vaapi --enable-libshaderc --enable-vulkan --enable-libplacebo --enable-opencl --enable-libcdio --enable-libgme --enable-libmodplug --enable-libopenmpt --enable-libopencore-amrwb --enable-libmp3lame --enable-libshine --enable-libtheora --enable-libtwolame --enable-libvo-amrwbenc --enable-libcodec2 --enable-libilbc --enable-libgsm --enable-libopencore-amrnb --enable-libopus --enable-libspeex --enable-libvorbis --enable-ladspa --enable-libbs2b --enable-libflite --enable-libmysofa --enable-librubberband --enable-libsoxr --enable-chromaprint libavutil 59. 28.100 / 59. 28.100 libavcodec 61. 10.100 / 61. 10.100 libavformat 61. 5.101 / 61. 5.101 libavdevice 61. 2.100 / 61. 2.100 libavfilter 10. 2.102 / 10. 2.102 libswscale 8. 2.100 / 8. 2.100 libswresample 5. 2.100 / 5. 2.100 libpostproc 58. 2.100 / 58. 2.100 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'd:\ROAV\20240803-BMW.mp4': Metadata: major_brand : isom minor_version : 512 compatible_brands: isomiso2mp41 encoder : Lavf61.5.101 Duration: 00:00:27.07, start: 0.000000, bitrate: 889896 kb/s Stream #0:0[0x1](und): Video: hevc (Main) (hev1 / 0x31766568), yuv420p(tv, progressive), 2560x1440, 889591 kb/s, 1800.04 fps, 1000k tbr, 1000k tbn (default) Metadata: handler_name : VideoHandler vendor_id : [0][0][0][0] encoder : Lavc61.10.100 libx265 Running it on an older file produced: C:\Users\Wim>ffprobe d:\ROAV\20240523-BMW.mp4 ffprobe version 2024-07-18-git-fa5a605542-full_build-www.gyan.dev Copyright (c) 2007-2024 the FFmpeg developers built with gcc 13.2.0 (Rev5, Built by MSYS2 project) configuration: --enable-gpl --enable-version3 --enable-static --disable-w32threads --disable-autodetect --enable-fontconfig --enable-iconv --enable-gnutls --enable-libxml2 --enable-gmp --enable-bzlib --enable-lzma --enable-libsnappy --enable-zlib --enable-librist --enable-libsrt --enable-libssh --enable-libzmq --enable-avisynth --enable-libbluray --enable-libcaca --enable-sdl2 --enable-libaribb24 --enable-libaribcaption --enable-libdav1d --enable-libdavs2 --enable-libopenjpeg --enable-libquirc --enable-libuavs3d --enable-libxevd --enable-libzvbi --enable-libqrencode --enable-librav1e --enable-libsvtav1 --enable-libvvenc --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs2 --enable-libxeve --enable-libxvid --enable-libaom --enable-libjxl --enable-libvpx --enable-mediafoundation --enable-libass --enable-frei0r --enable-libfreetype --enable-libfribidi --enable-libharfbuzz --enable-liblensfun --enable-libvidstab --enable-libvmaf --enable-libzimg --enable-amf --enable-cuda-llvm --enable-cuvid --enable-dxva2 --enable-d3d11va --enable-d3d12va --enable-ffnvcodec --enable-libvpl --enable-nvdec --enable-nvenc --enable-vaapi --enable-libshaderc --enable-vulkan --enable-libplacebo --enable-opencl --enable-libcdio --enable-libgme --enable-libmodplug --enable-libopenmpt --enable-libopencore-amrwb --enable-libmp3lame --enable-libshine --enable-libtheora --enable-libtwolame --enable-libvo-amrwbenc --enable-libcodec2 --enable-libilbc --enable-libgsm --enable-libopencore-amrnb --enable-libopus --enable-libspeex --enable-libvorbis --enable-ladspa --enable-libbs2b --enable-libflite --enable-libmysofa --enable-librubberband --enable-libsoxr --enable-chromaprint libavutil 59. 28.100 / 59. 28.100 libavcodec 61. 10.100 / 61. 10.100 libavformat 61. 5.101 / 61. 5.101 libavdevice 61. 2.100 / 61. 2.100 libavfilter 10. 2.102 / 10. 2.102 libswscale 8. 2.100 / 8. 2.100 libswresample 5. 2.100 / 5. 2.100 libpostproc 58. 2.100 / 58. 2.100 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'd:\ROAV\20240523-BMW.mp4': Metadata: major_brand : isom minor_version : 512 compatible_brands: isomiso2mp41 encoder : Lavf61.3.103 Duration: 00:09:40.88, start: 0.000000, bitrate: 26675 kb/s Stream #0:0[0x1](und): Video: hevc (Main) (hev1 / 0x31766568), yuv420p(tv, progressive), 2560x1440, 26672 kb/s, 25 fps, 25 tbr, 12800 tbn (default) Metadata: handler_name : VideoHandler vendor_id : [0][0][0][0] encoder : Lavc61.5.104 libx265 The important difference is that the older file reports 2560x1440, 26672 kb/s, 25 fps, 25 tbr, 12800 tbn and the newer file reports 2560x1440, 889591 kb/s, 1800.04 fps, 1000k tbr, 1000k tbn. This seems that the new code speed up the reported fps without dropping any frames.

3 4

Intel QSV Transcoding Stops on Resolution Change
by Shane Warren 05 Sep '24

05 Sep '24

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"

4 5

How to preserve file time
by Ulf Zibis 02 Sep '24

02 Sep '24

Hi, is there an option how to preserve the file time from the input file to the outputfile? My search for "file time" on https://ffmpeg.org/ffmpeg-all.html was resultless. -Ulf

15 58

FFmpeg devs linked in my new Foreign Policy article
by Douglas Lucas 28 Aug '24

28 Aug '24

Dear FFmpeg community, Yesterday Foreign Policy, based in D.C. and founded in 1970, published my new article advocating for a proposed global commons framework for public data collaboration. Since the news outlet's audience consists of many higher-ups in government / civil service, international relations, and tech companies, I wanted to make the point that disruptive innovation is more than just regulating states versus cruel corporations -- tiny teams with big hearts still matter. Such as FFmpeg ... Search my article for the paragraph that includes the following -- "small, underfunded teams still save the world. Indeed, just 22 aging ships repair the constantly breaking undersea cables civilization depends on. Underpaid and unpaid developers, scattered worldwide, patch arcane software bugs threatening the world economy" -- and you'll see that the word "unpaid" links to this FFmpeg thread about the xz fiasco: https://x.com/FFmpeg/status/1775178803129602500 The paywall-jumping gift hyperlink to my article seems to function only sporadically, so I'll include an alternate hyperlink as well. Plus a link to a few tweets for those interested in social media stuff. Gift: https://foreignpolicy.com/2024/08/27/biden-tiktok-bytedance-china-ban-getge… Alternate: https://archive.ph/9Ss1S Tweets: Mine: https://x.com/DouglasLucas/status/1828494416421781861 Foreign Policy's: https://x.com/ForeignPolicy/status/1828568223299629293 A popular one: https://x.com/YourAnonCentral/status/1828868740060160315 I hope the above brightens your day a little! Douglas

1 0

How does one apply a filter option for a limited amount of time?
by David Niklas 25 Aug '24

25 Aug '24

Hello, Here's my command: ffmpeg -i in.mp4 -filter_complex "drawbox=w=1920:h=1080:color=black@1:t=fill" out.mp4 How do I apply it for only a few seconds to a specific time in the video? Thanks!

2 1

Stream plays with ffplay but doesn't save with ffmpeg
by Jesse Campbell 24 Aug '24

24 Aug '24

Hi, I'm trying to figure out why ffplay is working and ffmpeg is not working. The stream plays episodes of the same TV show. When the episode changes, ffplay plays the next video and ffmpeg freezes. Is there a difference to control how each program works? Can I make ffmpeg run like ffplay? ffplay -i https://adultswim-vodlive.cdn.turner.com/live/squidbillies/stream.m3u8 ffmpeg -i https://adultswim-vodlive.cdn.turner.com/live/squidbillies/stream.m3u8 test.mkv Regards, Jesse

2 1

HTTP async client does not work with HLS source
by Ali Hussein 24 Aug '24

24 Aug '24

Hi, I want ffmpeg to pull the live stream asynchronously from the remote HLS source. However, I have read about the async ( https://www.ffmpeg.org/ffmpeg-all.html#toc-async) parameter that can be added to the source URL. The following logs show that the async cannot request the ts files of the m3u8 playlist. [hls @ 0x55aa48240c00] Skip ('#EXT-X-VERSION:3') [AVIOContext @ 0x55aa482a0700] Statistics: 519 bytes read, 0 seeks [hls @ 0x55aa48240c00] Opening 'async:https://127.0.0.1/input.m3u8' for reading [async @ 0x55aa482a5d80] No default whitelist set [https @ 0x55aa48288dc0] Setting default whitelist 'http,https,tls,rtp,tcp,udp,crypto,httpproxy' [tcp @ 0x55aa482a6400] Original list of addresses: [tcp @ 0x55aa482a6400] Address 127.0.0.1 port 443 [tcp @ 0x55aa482a6400] Interleaved list of addresses: [tcp @ 0x55aa482a6400] Address 127.0.0.1 port 443 [tcp @ 0x55aa482a6400] Starting connection attempt to 127.0.0.1 port 443 [tcp @ 0x55aa482a6400] Successfully connected to 127.0.0.1 port 443 [https @ 0x55aa48288dc0] request: GET /input.m3u8 HTTP/1.1 User-Agent: Lavf/58.76.100 Accept: */* Range: bytes=0- Connection: keep-alive Host: localhost Icy-MetaData: 1 [hls @ 0x55aa48240c00] Skip ('#EXT-X-VERSION:3') [AVIOContext @ 0x55aa482a6040] Statistics: 519 bytes read, 0 seeks [hls @ 0x55aa48240c00] HLS request for url 'async:https://127.0.0.1/input_1664112.ts', offset 0, playlist 0 [hls @ 0x55aa48240c00] Failed to open segment 1664112 of playlist 0 [hls @ 0x55aa48240c00] Opening 'async:https://127.0.0.1/input.m3u8' for reading [async @ 0x55aa48288dc0] No default whitelist set [https @ 0x55aa482a5d80] Setting default whitelist 'http,https,tls,rtp,tcp,udp,crypto,httpproxy' [tcp @ 0x55aa48283b40] Original list of addresses: [tcp @ 0x55aa48283b40] Address 127.0.0.1 port 443 [tcp @ 0x55aa48283b40] Interleaved list of addresses: [tcp @ 0x55aa48283b40] Address 127.0.0.1 port 443 [tcp @ 0x55aa48283b40] Starting connection attempt to 127.0.0.1 port 443 [tcp @ 0x55aa48283b40] Successfully connected to 127.0.0.1 port 443 [https @ 0x55aa482a5d80] request: GET /input.m3u8 HTTP/1.1 User-Agent: Lavf/58.76.100 Accept: */* Range: bytes=0- Connection: keep-alive Host: localhost Icy-MetaData: 1 By the way, the stream works fine when I remove the async parameter form the link.

2 1

Failed setup for format vulkan: hwaccel initialisation returned error for Arc A750
by Terje J. Hanssen 21 Aug '24

21 Aug '24

Hi, I try to test Vulkan h264 or h265 decoding according to test command at https://trac.ffmpeg.org/wiki/HWAccelIntro#Vulkan ffmpeg -init_hw_device "vulkan=vk:0" -hwaccel vulkan -hwaccel_output_format vulkan -i INPUT -f null - -benchmark but get the following output error: [h264 @ 0x55952760cf40] Failed setup for format vulkan: hwaccel initialisation returned error. or [hevc @ 0x5580e96e8c80] Failed setup for format vulkan: hwaccel initialisation returned error. Any suggestion how to solve it? ------------------------------ vulkaninfo | grep GPU GPU id = 0 (Intel(R) Arc(tm) A750 Graphics (DG2)) GPU id = 1 (llvmpipe (LLVM 18.1.8, 256 bits)) GPU id = 0 (Intel(R) Arc(tm) A750 Graphics (DG2)) GPU id = 1 (llvmpipe (LLVM 18.1.8, 256 bits)) GPU id = 0 (Intel(R) Arc(tm) A750 Graphics (DG2)) GPU id = 1 (llvmpipe (LLVM 18.1.8, 256 bits)) GPU id : 0 (Intel(R) Arc(tm) A750 Graphics (DG2)): GPU id : 1 (llvmpipe (LLVM 18.1.8, 256 bits)): GPU0: deviceType = PHYSICAL_DEVICE_TYPE_DISCRETE_GPU GPU1: export ANV_VIDEO_DECODE=1 vulkaninfo | grep VK_KHR_video VK_KHR_video_decode_h264 : extension revision 9 VK_KHR_video_decode_h265 : extension revision 8 VK_KHR_video_decode_queue : extension revision 8 VK_KHR_video_queue : extension revision 8 MESA_VK_DEVICE_SELECT=list vulkaninfo selectable devices: GPU 0: 8086:56a1 "Intel(R) Arc(tm) A750 Graphics (DG2)" discrete GPU 0000:03:00.0 GPU 1: 10005:0 "llvmpipe (LLVM 18.1.8, 256 bits)" CPU 0000:00:00.0 This is on openSUSE Tumbleweed-Slowroll with ffmpeg-7.0, Intel, Vulkan, Mesa drivers etc. Full ffmpeg sample output as follows: ffmpeg -hide_banner -init_hw_device "vulkan=vk:0" -hwaccel vulkan -hwaccel_output_format vulkan -i h264_10bit_yuv422p10le.mp4 -f null - -benchmark Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'h264_10bit_yuv422p10le.mp4': Metadata: major_brand : isom minor_version : 512 compatible_brands: isomiso2avc1mp41 encoder : Lavf61.1.100 Duration: 00:01:11.20, start: 0.000000, bitrate: 9366 kb/s Stream #0:0[0x1](und): Video: h264 (High 4:2:2) (avc1 / 0x31637661), yuv422p10le(pc, smpte170m/unknown/unknown, top first), 1920x1080 [SAR 1:1 DAR 16:9], 9364 kb/s, 25 fps, 25 tbr, 12800 tbn (default) Metadata: handler_name : VideoHandler vendor_id : [0][0][0][0] Stream mapping: Stream #0:0 -> #0:0 (h264 (native) -> wrapped_avframe (native)) Press [q] to stop, [?] for help [h264 @ 0x55952760cf40] Failed setup for format vulkan: hwaccel initialisation returned error. Output #0, null, to 'pipe:': Metadata: major_brand : isom minor_version : 512 compatible_brands: isomiso2avc1mp41 encoder : Lavf61.1.100 Stream #0:0(und): Video: wrapped_avframe, yuv422p10le(pc, smpte170m/unknown/unknown, top coded first (swapped)), 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 200 kb/s, 25 fps, 25 tbn (default) Metadata: handler_name : VideoHandler vendor_id : [0][0][0][0] encoder : Lavc61.3.100 wrapped_avframe [out#0/null @ 0x5595275c8f40] video:765KiB audio:0KiB subtitle:0KiB other streams:0KiB global headers:0KiB muxing overhead: unknown frame= 1780 fps=767 q=-0.0 Lsize=N/A time=00:01:11.20 bitrate=N/A speed=30.7x bench: utime=20.985s stime=0.185s rtime=2.319s bench: maxrss=391544KiB

5 15

Extract HLS from TS
by EnoSat 16 Aug '24

16 Aug '24

Is it possible to extract streams from a TS file if a stream is stored on a certain pide? e.g:pid 900 TS sub-decoding (3 packet(s) from 00000064 stored for PID 0x0385): ===================================================== TS contains Section (length=552)... SI packet (length=413): PID: 901 (0x0385) Guess table from table id... DSM-CC DATAGRAM-decoding.... Table_ID: 62 (0x3e) [= DSM-CC - private data section // DVB datagram] section_syntax_indicator: 1 (0x01) private_indicator: 0 (0x00) reserved_1: 3 (0x03) Section_length: 410 (0x019a) MACaddrbyte/DevicdID 6: 1 (0x01) MACaddrbyte/DeviceID 5: 101 (0x65) reserved_2: 3 (0x03) payload_scrambling_control: 0 (0x00) [= unscrambled] address_scrambling_control: 0 (0x00) [= unscrambled] LLC_SNAP_flag: 0 (0x00) current_next_indicator: 1 (0x01) [= valid now] Section_number: 0 (0x00) Last_Section_number: 0 (0x00) MACaddrbyte/DeviceID 4: 1 (0x01) MACaddrbyte/DeviceID 3: 94 (0x5e) MACaddrbyte/DeviceID 2: 0 (0x00) MACaddrbyte/DeviceID 1: 1 (0x01) => MAC-Address/DeviceID: 01:00:5e:01:65:01 IP_datagram_bytes: Version: 4 (0x04) IP header length: 5 (0x05) Type of service: 0 (0x00) Total length: 397 (0x018d) Identification: 0 (0x0000) Reserved: 0 (0x00) DF: 0 (0x00) MF: 0 (0x00) Fragment offset: 0 (0x0000) Time to live: 128 (0x80) Protocol: 17 (0x11) [= UDP] Header checksum: 8236 (0x202c) Source address: c0a80489 [= 192.168.4.137] Destination address: ef016501 [= 239.1.101.1] UDP_datagram: Source port: 7001 (0x1b59) Destination port: 7001 (0x1b59) Length: 377 (0x0179) Checksum: 0 (0x0000) Data 0000: 12 a0 05 01 00 00 00 00 00 00 00 0a ff ff ff fd ................ 0010: c2 00 01 59 00 00 00 00 23 45 58 54 4d 33 55 0a ...Y....#EXTM3U. 0020: 23 45 58 54 2d 58 2d 56 45 52 53 49 4f 4e 3a 33 #EXT-X-VERSION:3 0030: 0a 23 45 58 54 2d 58 2d 4d 45 44 49 41 2d 53 45 .#EXT-X-MEDIA-SE 0040: 51 55 45 4e 43 45 3a 32 31 35 34 30 35 37 0a 23 QUENCE:2154057.# 0050: 45 58 54 2d 58 2d 54 41 52 47 45 54 44 55 52 41 EXT-X-TARGETDURA 0060: 54 49 4f 4e 3a 31 0a 23 45 58 54 49 4e 46 3a 31 TION:1.#EXTINF:1 0070: 2e 30 30 30 2c 20 6e 6f 20 64 65 73 63 0a 63 68 .000, no desc.ch 0080: 31 2d 32 31 35 34 30 35 37 2e 74 73 0a 23 45 58 1-2154057.ts.#EX 0090: 54 49 4e 46 3a 31 2e 30 30 30 2c 20 6e 6f 20 64 TINF:1.000, no d 00a0: 65 73 63 0a 63 68 31 2d 32 31 35 34 30 35 38 2e esc.ch1-2154058. 00b0: 74 73 0a 23 45 58 54 49 4e 46 3a 31 2e 30 30 30 ts.#EXTINF:1.000 00c0: 2c 20 6e 6f 20 64 65 73 63 0a 63 68 31 2d 32 31 , no desc.ch1-21 00d0: 35 34 30 35 39 2e 74 73 0a 23 45 58 54 49 4e 46 54059.ts.#EXTINF 00e0: 3a 31 2e 30 30 30 2c 20 6e 6f 20 64 65 73 63 0a :1.000, no desc. 00f0: 63 68 31 2d 32 31 35 34 30 36 30 2e 74 73 0a 23 ch1-2154060.ts.# 0100: 45 58 54 49 4e 46 3a 31 2e 30 30 30 2c 20 6e 6f EXTINF:1.000, no 0110: 20 64 65 73 63 0a 63 68 31 2d 32 31 35 34 30 36 desc.ch1-215406 0120: 31 2e 74 73 0a 23 45 58 54 49 4e 46 3a 31 2e 30 1.ts.#EXTINF:1.0 0130: 30 30 2c 20 6e 6f 20 64 65 73 63 0a 63 68 31 2d 00, no desc.ch1- 0140: 32 31 35 34 30 36 32 2e 74 73 0a 23 45 58 54 49 2154062.ts.#EXTI 0150: 4e 46 3a 31 2e 30 30 30 2c 20 6e 6f 20 64 65 73 NF:1.000, no des 0160: 63 0a 63 68 31 2d 32 31 35 34 30 36 33 2e 74 73 c.ch1-2154063.ts 0170: 0a . CRC: 213259279 (0x0cb6140f) e.g. so the file header in the TS file is: #EXTM3U #EXT-X-VERSION:3 #EXT-X-MEDIA-SEQUENCE:2154079 #EXT-X-TARGETDURATION:1 #EXTINF:1.000, no desc ch1-2154079.ts #EXTINF:1.000, no desc ch1-2154080.ts #EXTINF:1.000, no desc ch1-2154081.ts #EXTINF:1.000, no desc ch1-2154082.ts #EXTINF:1.000, no desc ch1-2154083.ts #EXTINF:1.000, no desc ch1-2154084.ts #EXTINF:1.000, no desc ch1-2154085.ts

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AMD Ryzen 5500GT APU video processing libraries and Linux ffmpeg video encoding.
by Guddla Rupesh 10 Aug '24

10 Aug '24

Hi I am Rupesh from India and I brought a new desktop pc with ryzen 5500GT APU and Asus prime b450 m k2 motherboard. I have installed debian Trixie testing Linux distribution and everything is working fine except I have some doubts related to video encoding using ffmpeg and libaom av1. I have some mp4 h264 video files and I thought to convert them to av1 codec using libaom. So I compiled ffmpeg source code with options cpu=znver3 and --enable-libaom and --enable-x265. I succeeded in building ffmpeg from source code but my Linux doesn't have package related to AMF which is the software from AMD related to video codecs. During the configuration of ffmpeg first I have included the option --enable-amf but I got error as amf requested but not found. So I removed this option and after that the compilation was successful. I have used the recently build ffmpeg to convert h264 files to av1 codec and succeeded. After that I have copied converted av1 files to the latest android tablet and tried to play through vlc video player but when I skip forward 10 minutes the player is getting stuck for few seconds and resume. I mean it can't respond quickly when I fast forward. Previously I used Intel 10th gen 10100 APU and Asus prime h 510 me motherboard and used the same ffmpeg tool to convert the same h264 files to av1 codec in the same Linux operating system. After that I have copied them to the same latest android tablet and tried to play through vlc video player and at that time there is no lag when I fast forward. I mean it responded quickly when I fast forwarded. Previously while using Intel 10th gen pc there were options such as --enable-libmfx --enable-qsv --enable-libvpl I think that those are related to Intel but not useful while using amd APU and so I have given option --disable-libmfx and not used vpl qsv at all. I searched web for AMD ffmpeg and found only AMF but there are no options mfx, vpl found in Intel. I found an article on how to compile ffmpeg with AMF support and it suggested to clone the git of AMF and so I cloned it and the resulting cloned folder is 1300 mb. I am confused on how to compile ffmpeg with AMF support. Is there any degradation in the quality of converted av1 file when libraries such as AMF mfx vpl are not used. If you say just ignore AMF support for ffmpeg I will ignore. Kindly clarify my doubts related to AMF and if you think AMF is must for proper libaom encoding kindly suggest proper method to compile ffmpeg with AMF support. Regards, Rupesh.

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