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automatic generate list ffmpeg trimming video files [duplicate]
20 mai 2019, par DonThis question already has an answer here:
May I ask if there is an automatic way to input all the mp4 file names in the ffmpge code ? I have about 60 small video files that I need to trim, it is a pain if I have to keep entering individual file name. the mylist.txt generate only works with when concat
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Get motion vectors coordinates from next and previous frames durring transcoding in FFMPEG
20 mai 2019, par EnockCan someone tells me how can I get values of motion vectors for next and previous frames in FFMPEG during transcoding, please? I can use MpegEncContext* s->mv_table to have values of motions vectors for current picture. But I need to get also MVs values for next and previous frame. How can I do ?
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What is the best way to check if audio embedded in video is ambisonic ?
20 mai 2019, par GrzegorzWWe are making 360 video player for VR headsets using Unity. We are trying to achieve spatial audio. The easiest case is when video and audio are in separated files, but now we decided to support also videos with embedded audio. I need to know before i load video if audio is ambisonic or not. I'm looking for an easy way to decide if audio is ambisonic in order to separate it from video and convert to .tbe file, which is currently supported by our app.
I was trying to use ffmpeg:
$./ffmpeg.exe -i ~/Videos/video.mp4and got:
ffmpeg version 4.1.3 Copyright (c) 2000-2019 the FFmpeg developers built with gcc 8.3.1 (GCC) 20190414 configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-libmfx --enable-amf --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth libavutil 56. 22.100 / 56. 22.100 libavcodec 58. 35.100 / 58. 35.100 libavformat 58. 20.100 / 58. 20.100 libavdevice 58. 5.100 / 58. 5.100 libavfilter 7. 40.101 / 7. 40.101 libswscale 5. 3.100 / 5. 3.100 libswresample 3. 3.100 / 3. 3.100 libpostproc 55. 3.100 / 55. 3.100 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'C:/Users/Medion/Videos/video.mp4': Metadata: major_brand : isom minor_version : 512 compatible_brands: isomiso2avc1mp41 encoder : Lavf57.56.101 Duration: 00:11:39.40, start: 0.000000, bitrate: 17290 kb/s Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709), 3840x2160 [SAR 1:1 DAR 16:9], 16497 kb/s, 29.97 fps, 29.97 tbr, 30k tbn, 59.94 tbc (default) Metadata: handler_name : VideoHandler Side data: stereo3d: top and bottom spherical: equirectangular (0.000000/0.000000/0.000000) Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, 4.0, fltp, 778 kb/s (default) Metadata: handler_name : SoundHandler Stream #0:2(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, 4.0, fltp, 4 kb/s Metadata: handler_name : SoundHandler Stream #0:3(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 2 kb/s Metadata: handler_name : SoundHandler At least one output file must be specifiedbut I don't see any line that could indicate that audio is ambisonic. I see that there are 4 channels in streams #0:1 and #0:2, but I bet it's not enough.
I've also tried MediaInfo but it's the same thing:
General CompleteName : C:\Users\Medion\Videos\video.mp4 Format/String : MPEG-4 Format_Profile : Base Media CodecID/String : isom (isom/iso2/avc1/mp41) FileSize/String : 1.41 GiB Duration/String : 11 min 39 s OverallBitRate_Mode/String : Variable OverallBitRate/String : 17.3 Mb/s Encoded_Application/String : Lavf57.56.101 Video ID/String : 1 Format/String : AVC Format/Info : Advanced Video Codec Format_Profile : High@L5.2 Format_Settings : CABAC / 3 Ref Frames Format_Settings_CABAC/String : Yes Format_Settings_RefFrames/String : 3 frames Format_Settings_GOP : M=3, N=29 CodecID : avc1 CodecID/Info : Advanced Video Coding Duration/String : 11 min 39 s BitRate_Mode/String : Variable BitRate/String : 16.5 Mb/s BitRate_Maximum/String : 20.0 Mb/s Width/String : 3 840 pixels Height/String : 2 160 pixels DisplayAspectRatio/String : 16:9 FrameRate_Mode/String : Constant FrameRate/String : 29.970 (30000/1001) FPS Standard : NTSC ColorSpace : YUV ChromaSubsampling/String : 4:2:0 BitDepth/String : 8 bits ScanType/String : Progressive Bits-(Pixel*Frame) : 0.066 StreamSize/String : 1.34 GiB (95%) Language/String : English Tagged_Date : UTC 2017-06-13 17:37:51 colour_range : Limited colour_primaries : BT.709 transfer_characteristics : BT.709 matrix_coefficients : BT.709 Codec configuration box : avcC Audio #1 ID/String : 2 Format/String : AAC LC Format/Info : Advanced Audio Codec Low Complexity CodecID : mp4a-40-2 Duration/String : 11 min 39 s Source_Duration/String : 11 min 39 s BitRate_Mode/String : Constant BitRate/String : 779 kb/s Channel(s)/String : 4 channels ChannelLayout : C L R Cb SamplingRate/String : 48.0 kHz FrameRate/String : 46.875 FPS (1024 SPF) Compression_Mode/String : Lossy StreamSize/String : 64.9 MiB (5%) Source_StreamSize/String : 64.9 MiB (5%) Default/String : Yes AlternateGroup/String : 1 Tagged_Date : UTC 2017-06-13 17:37:51 Audio #2 ID/String : 3 Format/String : AAC LC Format/Info : Advanced Audio Codec Low Complexity CodecID : mp4a-40-2 Duration/String : 11 min 39 s Source_Duration/String : 11 min 39 s BitRate_Mode/String : Variable BitRate/String : 4 900 b/s BitRate_Maximum/String : 266 kb/s Channel(s)/String : 4 channels ChannelLayout : C L R Cb SamplingRate/String : 48.0 kHz FrameRate/String : 46.875 FPS (1024 SPF) Compression_Mode/String : Lossy StreamSize/String : 418 KiB (0%) Source_StreamSize/String : 418 KiB (0%) Default/String : No AlternateGroup/String : 1 Tagged_Date : UTC 2017-06-13 17:37:51 Audio #3 ID/String : 4 Format/String : AAC LC Format/Info : Advanced Audio Codec Low Complexity CodecID : mp4a-40-2 Duration/String : 11 min 39 s Source_Duration/String : 11 min 39 s BitRate_Mode/String : Variable BitRate/String : 2 275 b/s BitRate_Maximum/String : 128 kb/s Channel(s)/String : 2 channels ChannelLayout : L R SamplingRate/String : 48.0 kHz FrameRate/String : 46.875 FPS (1024 SPF) Compression_Mode/String : Lossy StreamSize/String : 194 KiB (0%) Source_StreamSize/String : 194 KiB (0%) Default/String : No AlternateGroup/String : 1 Tagged_Date : UTC 2017-06-13 17:37:51I assume that I don't know what to look for in those outputs. Thanks in advance.
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FFMpeg - can't manage to create DnxHR files in Rec2020 / 4:4:4 Chroma sampling
20 mai 2019, par ShouilleI'm trying to convert an image sequence into a Quicktime DnxHR with 4:4:4 sampling in Rec2020 colorspace using FFMpeg 4.1.3. But I'm always ending with 4:2:0 Rec709 file.
In my lastest attempt FFMpeg seems to de the right thing :
ffmpeg.exe -y -i "C:/TEST/final-%04d.dpx" -c:v dnxhd -vf "scale=3840:2160,fps=24,format=yuv444p12le" -profile:v dnxhr_444 -color_primaries 9 -colorspace 9 -color_range 2 C:/TEST/test.movDuring encoding the output stream is shown as 444 / bt2020
Output #0, mov, to 'C:/TEST/test.mov': Metadata: encoder : Lavf58.20.100 Stream #0:0: Video: dnxhd (DNXHR 444) (AVdh / 0x68645641), yuv444p10le(pc, bt2020nc/bt2020/unknown), 3840x2160, q=2-1024, 200 kb/s, 24 fps, 12288 tbn, 24 tbc Metadata: encoder : Lavc58.35.100 dnxhd frame= 10 fps=3.3 q=1.0 Lsize= 71161kB time=00:00:00.37 bitrate=1554195.5kbits/s speed=0.122x video:71160kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.001114%But when I inspect the output file FFMpeg says it's in bt709
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'C:/TEST/test.mov': Metadata: major_brand : qt minor_version : 512 compatible_brands: qt encoder : Lavf58.20.100 Duration: 00:00:00.42, start: 0.000000, bitrate: 1397959 kb/s Stream #0:0(eng): Video: dnxhd (DNXHR 444) (AVdh / 0x68645641), yuv444p10le(pc, bt709/unknown/unknown), 3840x2160, 1399062 kb/s, 24 fps, 24 tbr, 12288 tbn, 12288 tbc (default) Metadata: handler_name : VideoHandler encoder : Lavc58.35.100 dnxhdAnd softwares like MediaInfo say the chroma sampling is in 4.2.0
Any ideas ?
As ask in the comment, the full log of the conversion :
C:\Users\pierrech>ffmpeg.exe -y -i "C:/TEST/final-%04d.dpx" -c:v dnxhd -vf colorspace=all=bt2020:iall=bt2020 -profile:v dnxhr_444 -color_primaries bt2020 -colorspace bt2020_ncl -color_range 2 -color_trc bt2020_12bit C:/TEST/test.mov ffmpeg version 4.1.3 Copyright (c) 2000-2019 the FFmpeg developers built with gcc 8.3.1 (GCC) 20190414 configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-libmfx --enable-amf --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth libavutil 56. 22.100 / 56. 22.100 libavcodec 58. 35.100 / 58. 35.100 libavformat 58. 20.100 / 58. 20.100 libavdevice 58. 5.100 / 58. 5.100 libavfilter 7. 40.101 / 7. 40.101 libswscale 5. 3.100 / 5. 3.100 libswresample 3. 3.100 / 3. 3.100 libpostproc 55. 3.100 / 55. 3.100 Input #0, image2, from 'C:/TEST/final-%04d.dpx': Duration: 00:00:00.40, start: 0.000000, bitrate: N/A Stream #0:0: Video: dpx, rgb48le, 3840x2160, 25 tbr, 25 tbn, 25 tbc Stream mapping: Stream #0:0 -> #0:0 (dpx (native) -> dnxhd (native)) Press [q] to stop, [?] for help Output #0, mov, to 'C:/TEST/test.mov': Metadata: encoder : Lavf58.20.100 Stream #0:0: Video: dnxhd (DNXHR 444) (AVdh / 0x68645641), yuv444p10le(pc, bt2020nc/bt2020/bt2020-12), 3840x2160, q=2-1024, 200 kb/s, 25 fps, 12800 tbn, 25 tbc Metadata: encoder : Lavc58.35.100 dnxhd frame= 10 fps=3.8 q=1.0 Lsize= 71161kB time=00:00:00.36 bitrate=1618952.6kbits/s speed=0.136x video:71160kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.001114%And after the conversion
C:\Users\pierrech>ffmpeg.exe -i C:\TEST\test.mov -hide_banner Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'C:\TEST\test.mov': Metadata: major_brand : qt minor_version : 512 compatible_brands: qt encoder : Lavf58.20.100 Duration: 00:00:00.40, start: 0.000000, bitrate: 1457373 kb/s Stream #0:0(eng): Video: dnxhd (DNXHR 444) (AVdh / 0x68645641), yuv444p10le(pc, bt709/unknown/unknown), 3840x2160, 1457356 kb/s, 25 fps, 25 tbr, 12800 tbn, 12800 tbc (default) Metadata: handler_name : VideoHandler encoder : Lavc58.35.100 dnxhd At least one output file must be specified -
I have created video using several images .. how to add fadein effect while every frame changing in video ? [duplicate]
20 mai 2019, par Jeeva MuruganThis question already has an answer here:
I am running this code for creating video. How to add fadein effect for every frame in the video?
ffmpeg -r 2 -t 9 -pattern_type glob -i '*.png' single_video.mp4
