Experimental JSON to FFmpeg command line tool for video editing. Because of JSON it's much easier to create and edit video timeline and it's much easier to integrate it with other tools.
- Supports video, audio and image sources
- Clip transformation: scale, position, rotation, opacity
- Clip transitions from/to and cross-fade: fade, smoothup, smoothdown, circlecrop, squeezev, squeezeh and more
- For non-linear video editing with multiple tracks and clips
- Minimalistic JSON format
- No direct ffmpeg or node dependency required
Install package:
npm install json-to-ffmpeg
# or
yarn add json-to-ffmpeg
# or
pnpm add json-to-ffmpegImport and use it:
import { parseSchema } from 'json-to-ffmpeg';
const ffmpegCommand = parseSchema(schema);or if you need filter complex part only:
const filter = parseSchema(schema, true);Tool translates video description from JSON to complex FFmpeg command including all required preprocessing steps, filters and transitions.
The timeline can be passed either as a JSON string or as a JS object. For example this JSON represent the timeline shown above:
{
"version": 1,
"inputs": {
"source1": {
"type": "video",
"file": "samples/bee1920.mp4",
"hasAudio": false,
"hasVideo": true,
"duration": 40
},
"source2": {
"type": "video",
"file": "samples/book1920.mp4",
"hasAudio": false,
"hasVideo": true,
"duration": 13
},
"source3": {
"type": "video",
"file": "samples/cows1920.mp4",
"hasAudio": true,
"hasVideo": true,
"duration": 15
},
"source4": {
"type": "video",
"file": "samples/flowers1920.mp4",
"hasAudio": true,
"hasVideo": true,
"duration": 21
},
"audio1": {
"type": "audio",
"file": "samples/ever.mp3",
"hasAudio": true,
"hasVideo": false,
"duration": 181
},
"audio2": {
"type": "audio",
"file": "samples/weekend.mp3",
"hasAudio": true,
"hasVideo": false,
"duration": 208
},
"watermark": {
"type": "image",
"file": "samples/flower.png",
"hasAudio": false,
"hasVideo": true,
"duration": 0
}
},
"tracks": {
"track_with_some_videos": {
"type": "video",
"clips": [
{
"name": "clip1",
"source": "source1",
"timelineTrackStart": 3,
"duration": 2,
"sourceStartOffset": 10,
"clipType": "video",
"transform": {
"x": 0,
"y": 0,
"width": 1920,
"height": 1080,
"rotation": 0,
"opacity": 1
}
},
{
"name": "clip2",
"source": "source2",
"timelineTrackStart": 5,
"duration": 1,
"sourceStartOffset": 5,
"clipType": "video",
"transform": {
"x": 0,
"y": 0,
"width": 1920,
"height": 1080,
"rotation": 0,
"opacity": 1
}
},
{
"name": "clip3",
"source": "source3",
"timelineTrackStart": 10,
"duration": 5,
"sourceStartOffset": 3,
"clipType": "video",
"transform": {
"x": 480,
"y": 270,
"width": 960,
"height": 540,
"rotation": 45,
"opacity": 0.5
}
},
{
"name": "clip4",
"source": "source1",
"timelineTrackStart": 15,
"duration": 5,
"sourceStartOffset": 27,
"clipType": "video",
"transform": {
"x": 0,
"y": 0,
"width": 1920,
"height": 1080,
"rotation": 0,
"opacity": 1
}
},
{
"name": "clip5",
"source": "source2",
"timelineTrackStart": 19,
"duration": 5,
"sourceStartOffset": 0,
"clipType": "video",
"transform": {
"x": 50,
"y": 50,
"width": 400,
"height": 300,
"rotation": 0,
"opacity": 1
}
},
{
"name": "clip6",
"source": "source4",
"timelineTrackStart": 23,
"duration": 5,
"sourceStartOffset": 15,
"clipType": "video",
"transform": {
"x": 0,
"y": 0,
"width": 1920,
"height": 1080,
"rotation": 0,
"opacity": 1
}
},
{
"name": "clip7",
"source": "source3",
"timelineTrackStart": 28,
"duration": 5,
"sourceStartOffset": 0,
"clipType": "video",
"transform": {
"x": 0,
"y": 0,
"width": 1920,
"height": 1080,
"rotation": 0,
"opacity": 1
}
},
{
"name": "clip8",
"source": "source1",
"timelineTrackStart": 33,
"duration": 5,
"sourceStartOffset": 0,
"clipType": "video",
"transform": {
"x": 0,
"y": 0,
"width": 1920,
"height": 1080,
"rotation": 0,
"opacity": 1
}
}
]
},
"track_with_watermark": {
"type": "video",
"clips": [
{
"name": "watermark_clip",
"source": "watermark",
"timelineTrackStart": 0,
"duration": 30,
"sourceStartOffset": 0,
"clipType": "image",
"transform": {
"x": 1610,
"y": 10,
"width": 300,
"height": 150,
"rotation": 0,
"opacity": 1
}
}
]
},
"track2": {
"type": "audio",
"clips": [
{
"name": "audio_clip1",
"source": "audio1",
"timelineTrackStart": 5,
"duration": 10,
"sourceStartOffset": 0,
"clipType": "audio",
"volume": 1
},
{
"name": "audio_clip2",
"source": "audio2",
"timelineTrackStart": 20,
"duration": 15,
"sourceStartOffset": 0,
"clipType": "audio",
"volume": 1
}
]
}
},
"transitions": [
{
"type": "smoothup",
"duration": 0.5,
"from": null,
"to": "clip1"
},
{
"type": "smoothdown",
"duration": 0.5,
"from": "clip1",
"to": null
},
{
"type": "fade",
"duration": 0.5,
"from": null,
"to": "clip2"
},
{
"type": "circlecrop",
"duration": 0.5,
"from": "clip2",
"to": null
},
{
"type": "squeezev",
"duration": 0.5,
"from": "clip3",
"to": null
},
{
"type": "squeezeh",
"duration": 0.5,
"from": "watermark_clip",
"to": null
},
{
"type": "fade",
"duration": 1,
"from": "clip4",
"to": "clip5"
},
{
"type": "smoothdown",
"duration": 1,
"from": "clip5",
"to": "clip6"
},
{
"type": "smoothdown",
"duration": 0.5,
"from": "clip8",
"to": null
}
],
"output": {
"tempDir": "./tmp",
"file": "output.mp4",
"videoCodec": "libx264",
"audioCodec": "aac",
"width": 1920,
"height": 1080,
"audioBitrate": "320k",
"preset": "veryfast",
"crf": 23,
"framerate": 30,
"flags": [
"-pix_fmt",
"yuv420p"
],
"startPosition": 0,
"endPosition": 38,
"scaleRatio": 0.2
}
}will be translated into command like this:
#!/bin/bash
mkdir -p ./tmp
ffmpeg -y -i samples/bee1920.mp4 -ss 10 -t 2 -r 30 ./tmp/clip1.mp4
ffmpeg -y -i samples/book1920.mp4 -ss 5 -t 1 -r 30 ./tmp/clip2.mp4
ffmpeg -y -i samples/cows1920.mp4 -ss 3 -t 5 -r 30 ./tmp/clip3.mp4
ffmpeg -y -i samples/bee1920.mp4 -ss 27 -t 5 -r 30 ./tmp/clip4.mp4
ffmpeg -y -i samples/book1920.mp4 -ss 0 -t 5 -r 30 ./tmp/clip5.mp4
ffmpeg -y -i samples/flowers1920.mp4 -ss 15 -t 5 -r 30 ./tmp/clip6.mp4
ffmpeg -y -i samples/cows1920.mp4 -ss 0 -t 5 -r 30 ./tmp/clip7.mp4
ffmpeg -y -i samples/bee1920.mp4 -ss 0 -t 5 -r 30 ./tmp/clip8.mp4
ffmpeg -y \
-i ./tmp/clip1.mp4 \
-i ./tmp/clip2.mp4 \
-i ./tmp/clip3.mp4 \
-i ./tmp/clip4.mp4 \
-i ./tmp/clip5.mp4 \
-i ./tmp/clip6.mp4 \
-i ./tmp/clip7.mp4 \
-i ./tmp/clip8.mp4 \
-i samples/ever.mp3 \
-i samples/weekend.mp3 \
-i samples/flower.png \
-filter_complex "color=c=black:s=384x216:d=38[base];
[email protected]:s=384x216:d=3[gap_xbPT0R2D];
[email protected]:s=384x216:d=2[cMu1AeAv_base];
[0:v]scale=384:216,format=rgba,colorchannelmixer=aa=1[Tqb8V30z_clip];
[cMu1AeAv_base][Tqb8V30z_clip]overlay=0:0:format=auto,rotate=0,fps=30[clip1];
[email protected]:s=384x216:d=1[nwjCLeBf_base];
[1:v]scale=384:216,format=rgba,colorchannelmixer=aa=1[Jt2Ow3z7_clip];
[nwjCLeBf_base][Jt2Ow3z7_clip]overlay=0:0:format=auto,rotate=0,fps=30[clip2];
[email protected]:s=384x216:d=4[gap_wGJMg2Xy];
[email protected]:s=384x216:d=5[nbl0GdNN_base];
[2:v]scale=192:108,format=rgba,colorchannelmixer=aa=0.5[fuMgQH1R_clip];
[nbl0GdNN_base][fuMgQH1R_clip]overlay=96:54:format=auto,rotate=45,fps=30[clip3];
[email protected]:s=384x216:d=5[KWL95Ced_base];
[3:v]scale=384:216,format=rgba,colorchannelmixer=aa=1[tiuMabCa_clip];
[KWL95Ced_base][tiuMabCa_clip]overlay=0:0:format=auto,rotate=0,fps=30[clip4];
[email protected]:s=384x216:d=5[DYDR0Q6x_base];
[4:v]scale=80:60,format=rgba,colorchannelmixer=aa=1[52NAZxII_clip];
[DYDR0Q6x_base][52NAZxII_clip]overlay=10:10:format=auto,rotate=0,fps=30[clip5];
[email protected]:s=384x216:d=5[nG4pXmLO_base];
[5:v]scale=384:216,format=rgba,colorchannelmixer=aa=1[CgOJcTIJ_clip];
[nG4pXmLO_base][CgOJcTIJ_clip]overlay=0:0:format=auto,rotate=0,fps=30[clip6];
[email protected]:s=384x216:d=5[occJwxJK_base];
[6:v]scale=384:216,format=rgba,colorchannelmixer=aa=1[varB8t9b_clip];
[occJwxJK_base][varB8t9b_clip]overlay=0:0:format=auto,rotate=0,fps=30[clip7];
[email protected]:s=384x216:d=5[3q2VQ9Fn_base];
[7:v]scale=384:216,format=rgba,colorchannelmixer=aa=1[TnMfX5QP_clip];
[3q2VQ9Fn_base][TnMfX5QP_clip]overlay=0:0:format=auto,rotate=0,fps=30[clip8];
[email protected]:s=384x216:d=0.5[void_clip1];
[void_clip1]fps=30[fps_void_clip1_cpX1K4oW];
[clip1]fps=30[fps_clip1_9yaTMQSH];
[fps_void_clip1_cpX1K4oW][fps_clip1_9yaTMQSH]xfade=transition=smoothup:duration=0.43333333333333335:offset=0,fps=30[start_xfade_wvuFc7bn];
[email protected]:s=384x216:d=0.5[void_start_xfade_wvuFc7bn];
[start_xfade_wvuFc7bn]fps=30[fps_start_xfade_wvuFc7bn_XxZrJa0B];
[void_start_xfade_wvuFc7bn]fps=30[fps_void_start_xfade_wvuFc7bn_hwY2KZxJ];
[fps_start_xfade_wvuFc7bn_XxZrJa0B][fps_void_start_xfade_wvuFc7bn_hwY2KZxJ]xfade=transition=smoothdown:duration=0.43333333333333335:offset=1.5,fps=30[end_xfade_6MnYQ2ds];
[email protected]:s=384x216:d=0.5[void_clip2];
[void_clip2]fps=30[fps_void_clip2_vSBFpXYV];
[clip2]fps=30[fps_clip2_j3pJwJ6G];
[fps_void_clip2_vSBFpXYV][fps_clip2_j3pJwJ6G]xfade=transition=fade:duration=0.43333333333333335:offset=0,fps=30[start_xfade_gCAkUPK2];
[email protected]:s=384x216:d=0.5[void_start_xfade_gCAkUPK2];
[start_xfade_gCAkUPK2]fps=30[fps_start_xfade_gCAkUPK2_ZnLBlAtD];
[void_start_xfade_gCAkUPK2]fps=30[fps_void_start_xfade_gCAkUPK2_mLqar0Ah];
[fps_start_xfade_gCAkUPK2_ZnLBlAtD][fps_void_start_xfade_gCAkUPK2_mLqar0Ah]xfade=transition=circlecrop:duration=0.43333333333333335:offset=0.5,fps=30[end_xfade_aKd3UWQt];
[email protected]:s=384x216:d=0.5[void_clip3];
[clip3]fps=30[fps_clip3_3Ga4ugVG];
[void_clip3]fps=30[fps_void_clip3_5aVt3xnR];
[fps_clip3_3Ga4ugVG][fps_void_clip3_5aVt3xnR]xfade=transition=squeezev:duration=0.43333333333333335:offset=4.5,fps=30[end_xfade_s7Ol6uli];
[email protected]:s=384x216:d=0.5[void_clip8];
[clip8]fps=30[fps_clip8_4ZkGxZrd];
[void_clip8]fps=30[fps_void_clip8_ylXk9DHa];
[fps_clip8_4ZkGxZrd][fps_void_clip8_ylXk9DHa]xfade=transition=smoothdown:duration=0.43333333333333335:offset=4.5,fps=30[end_xfade_xAKXZo2d];
[gap_xbPT0R2D][end_xfade_6MnYQ2ds]concat=n=2:v=1:a=0,fps=30[between_concat_xlCW8OEt];
[between_concat_xlCW8OEt][end_xfade_aKd3UWQt]concat=n=2:v=1:a=0,fps=30[between_concat_FQfoDU4F];
[between_concat_FQfoDU4F][gap_wGJMg2Xy]concat=n=2:v=1:a=0,fps=30[between_concat_TVD5hCH9];
[between_concat_TVD5hCH9][end_xfade_s7Ol6uli]concat=n=2:v=1:a=0,fps=30[between_concat_xTjAkdon];
[between_concat_xTjAkdon][clip4]concat=n=2:v=1:a=0,fps=30[between_concat_m0OYCgp8];
[between_concat_m0OYCgp8]fps=30[fps_between_concat_m0OYCgp8_noaEdyvP];
[clip5]fps=30[fps_clip5_kQ745of1];
[fps_between_concat_m0OYCgp8_noaEdyvP][fps_clip5_kQ745of1]xfade=transition=fade:duration=1:offset=19,fps=30[between_xfade_HVZF1EvG];
[between_xfade_HVZF1EvG]fps=30[fps_between_xfade_HVZF1EvG_YWChbdii];
[clip6]fps=30[fps_clip6_6MbjfU2H];
[fps_between_xfade_HVZF1EvG_YWChbdii][fps_clip6_6MbjfU2H]xfade=transition=smoothdown:duration=1:offset=23,fps=30[between_xfade_3RlWNvho];
[between_xfade_3RlWNvho][clip7]concat=n=2:v=1:a=0,fps=30[between_concat_OxLtEhr7];
[between_concat_OxLtEhr7][end_xfade_xAKXZo2d]concat=n=2:v=1:a=0,fps=30[track_with_some_videos];
[email protected]:s=384x216:d=30[CYKVVqgc_base];
[10:v]loop=loop=900:size=900,setpts=PTS-STARTPTS,fps=30,scale=60:30,format=rgba,colorchannelmixer=aa=1[VvcI98fO_clip];
[CYKVVqgc_base][VvcI98fO_clip]overlay=322:2:format=auto,rotate=0,fps=30[watermark_clip];
[email protected]:s=384x216:d=8[gap_eOcpsLfb];
[email protected]:s=384x216:d=0.5[void_watermark_clip];
[watermark_clip]fps=30[fps_watermark_clip_fRSzmFrO];
[void_watermark_clip]fps=30[fps_void_watermark_clip_fhdBGNa7];
[fps_watermark_clip_fRSzmFrO][fps_void_watermark_clip_fhdBGNa7]xfade=transition=squeezeh:duration=0.43333333333333335:offset=29.5,fps=30[end_xfade_imi5OETb];
[end_xfade_imi5OETb][gap_eOcpsLfb]concat=n=2:v=1:a=0,fps=30[track_with_watermark];
anullsrc=channel_layout=stereo:sample_rate=44100:d=5[gap_9ROKhKdt];
[8:a]atrim=0:10,asetpts=PTS-STARTPTS,volume=1[audio_clip1];
anullsrc=channel_layout=stereo:sample_rate=44100:d=5[gap_fV2D5e8A];
[9:a]atrim=0:15,asetpts=PTS-STARTPTS,volume=1[audio_clip2];
anullsrc=channel_layout=stereo:sample_rate=44100:d=3[gap_4fwsUHt5];
[gap_9ROKhKdt][audio_clip1][gap_fV2D5e8A][audio_clip2][gap_4fwsUHt5]concat=n=5:v=0:a=1[track2];
[base][track_with_some_videos]overlay=0:0[gE0LAoGU_combined_track];
[gE0LAoGU_combined_track][track_with_watermark]overlay=0:0[video_output];
[track2]volume=1[audio_output];" \
-map '[video_output]' -map '[audio_output]' -c:v libx264 -c:a aac -b:a 320k -r 30 -s 384x216 -ss 0 -t 38 -crf 23 -preset veryfast -pix_fmt yuv420p output.mp4All samples are from Pixabay. All samples are licensed under Pixabay License.
- https://pixabay.com/videos/cow-ruminant-pasture-meadow-nature-186195/
- https://pixabay.com/videos/book-pages-literature-beach-ocean-185096/
- https://pixabay.com/videos/flower-peony-bee-insect-pollinate-165065/
- https://pixabay.com/videos/kangaroos-marsupials-mammal-181314/
- https://pixabay.com/videos/flower-dandelion-wild-flowers-72763/
- https://pixabay.com/videos/highland-cows-cows-cattle-scotland-65903/
- https://pixabay.com/videos/robin-bird-forest-nature-spring-21723/
- https://pixabay.com/music/beats-weeknds-122592/
- https://pixabay.com/music/future-bass-ever-flowing-12277/
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