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Ltx 2.3 Quality · Extend Video

Integriruj

Modelosko id ltx-2.3-quality/extend-video
# Run the model; wait up to 20 s for the finished result in the same call
curl -X POST "https://api.doitong.com/v1/run/ltx-2.3-quality/extend-video?wait=20" \
  -H "Authorization: Bearer $DOITONG_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "prompt": "A red fox trots through fresh snow at sunrise, soft golden light, shallow depth of field",
    "video": "https://content.doitong.com/video/showcase/v3/gen_fox_cartoon.mp4"
  }'

# Still "queued" or "running"? Poll with the id from the response:
curl "https://api.doitong.com/v1/requests/REQUEST_ID?wait=20" \
  -H "Authorization: Bearer $DOITONG_API_KEY"

Fajlo sar o misalo: $0.27 270 API krediti tire fajlo si merime angl-o phiripen Phir les kate

Lel API klidin
Lightricks · Video

Tiro prvo rezultato si kate

Ker tele jekh mangipen thaj phir les tire API klidinosa. E rezultatur si kopirime amare arakhipneste, vično vaj 7 dives bilačhes.

Ker jekh mangipen

O kontrolura kerde si katar e schemaske. O kodo thaj e cena menjinen sar tu len menjines.

•trubul

Prompto savo sikavel o manglo pokračujipen le videosko.

•trubul video_url
Čhiv jekh fajl, vaj

URL kaj sikavel o video savo si te avel lungeder.

resolution standardno auto

Kerdo video dimenzi, alignime pe 32px increments — misaleste, 1920x1080 avel 1888x1056 — le source resizingime ande kadala dimenzi vaš stitched rezultato. Stable extensions šaj aven lungeder pe ciklone rezolucija thaj shorter pe bare. 'auto' rakhel source dimenzi thaj aspect ratio dži kaj LTX limitura mukhen.

standardno 121

O gin e kadrengo vašo lungjaripen, tel o budžeto e stabilnone generacijako pe rezolucija multiplikime e kadrenca: pe 24 fps, paše 20 sekunde vaš 480p-klasa, 11 sekunde vaš 720p-klasa, vaj 5 sekunde vaš 1080p-klasa. E mangipena save nakhen o budžeto bolden 422; ciknjaren `num_frames` vaj alosaren jekh cikneder rezolucija. O gin astarel `num_context_frames` save učharen jekh kotor e izvorosko, kadja e dodime dužina si paše (`num_frames` - `num_context_frames`) / `frames_per_second` sekunde.

Lučhe negative_prompt · end_image · extend_direction · video_quality · video_write_mode · num_context_frames · end_image_strength · frames_per_second · video_strength · num_inference_steps · guidance_scale · seed · match_input_fps · enable_prompt_expansion · enable_safety_checker
standardno color distortion, ove...

Negative prompto savo phenel so o keripe na trubul te kerel.

end_image_url
Čhiv jekh fajl, vaj

Optional keyframe kipo savo kerel o extensionesko nevo first-kadro kana lungarel backward, vaj lesko last-kadro kana lungarel forward.

extend_direction standardno forward

Video extension modo: 'backward' kerel nevo starto, a 'forward' lungarel o video pala lesko agor.

video_quality standardno high

Quality preset aplikime pe o rezultato video.

video_write_mode standardno balanced

Pisimen modo vaš o rezultato-video.

standardno 25

Source-kadro count manglo vaš extension context/overlap, limitime le source-eske kadronenca. O count si rounded down te fitinel ande o LTX grid 8k+1.

standardno 1

Optional end-keyframe conditioning zor: te ciklarel, del le modelos buter sloboda, a 1.0 mangel exact match.

standardno 24

E rezultatoske videoski frekvencija e kadronengi, merimi kadronenca pe sekunda.

standardno 1

Source-context conditioning zor: te ciklarel, mukhel buter modeloski sloboda. Pe 1.0, le overlapping kadro ačhen phandle le source-sa, kerde seamless transition.

standardno 15

Thaven keci inference steps te keren, dži ko 30; te na paruven, labarel 15.

standardno 1

Paruven classifier-free guidance kadale scale-sa; lesko standardno tuning targetinel baro quality thaj sig keripe.

Seed savo kerel o generiripe reproducibilno. Te postavil pes pe None, randomno kidel pes seed.

POST /run/ltx-2.3-quality/extend-video?wait=20 hesab → $0.27
# Run the model; wait up to 20 s for the finished result in the same call
curl -X POST "https://api.doitong.com/v1/run/ltx-2.3-quality/extend-video?wait=20" \
  -H "Authorization: Bearer $DOITONG_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "prompt": "A red fox trots through fresh snow at sunrise, soft golden light, shallow depth of field",
    "video": "https://content.doitong.com/video/showcase/v3/gen_fox_cartoon.mp4"
  }'

# Still "queued" or "running"? Poll with the id from the response:
curl "https://api.doitong.com/v1/requests/REQUEST_ID?wait=20" \
  -H "Authorization: Bearer $DOITONG_API_KEY"

Phandel kava mangipen

Tiro kluč ačhel kadale browsereste: bičhalel pes numa ko Doitong API thaj šuvav pes (localStorage) numa te tiknes Remember. Le jekh API ključ

Palal Ltx 2.3 Quality · Extend Video

Lungavel jekh egzistirime klipo generirimasaha nevo footage dirigirime e obligativne `prompt`-esa. `extend_direction` si `forward` te džal angle katar o agor vaj `backward` te kerel nevo angluno agor. `num_context_frames` (9 to 121) setuil keci sursosko klipo overlape, thaj `num_frames` (9 to 481) setuil o segmentosko lungipen. Opcionalno `end_image_url` fiksil o agorutno keyframe, thaj `match_input_fps` rakhel o sursosko kadro-rato.

Parametra

Bičhalav vaj e kanonikano nav vaj e native nav, na duj. Kanonikane nava

NavTip standardnoMuklo Vakeripe
prompttrubul
Tipstring
Prompto savo sikavel o manglo pokračujipen le videosko.
video_urltrubul video
Tipurl · video
URL kaj sikavel o video savo si te avel lungeder.
extend_directionopcionalno
Tipenum
standardnoforward
forwardbackward
Video extension modo: 'backward' kerel nevo starto, a 'forward' lungarel o video pala lesko agor.
num_framesopcionalno
Tipinteger
standardno121
9 – 481
O gin e kadrengo vašo lungjaripen, tel o budžeto e stabilnone generacijako pe rezolucija multiplikime e kadrenca: pe 24 fps, paše 20 sekunde vaš 480p-klasa, 11 sekunde vaš 720p-klasa, vaj 5 sekunde vaš 1080p-klasa. E mangipena save nakhen o budžeto bolden 422; ciknjaren `num_frames` vaj alosaren jekh cikneder rezolucija. O gin astarel `num_context_frames` save učharen jekh kotor e izvorosko, kadja e dodime dužina si paše (`num_frames` - `num_context_frames`) / `frames_per_second` sekunde.
num_context_framesopcionalno
Tipinteger
standardno25
9 – 121
Source-kadro count manglo vaš extension context/overlap, limitime le source-eske kadronenca. O count si rounded down te fitinel ande o LTX grid 8k+1.
end_image_urlopcionalno end_image
Tipurl · image
Optional keyframe kipo savo kerel o extensionesko nevo first-kadro kana lungarel backward, vaj lesko last-kadro kana lungarel forward.
end_image_strengthopcionalno
Tipnumber
standardno1
0 – 1
Optional end-keyframe conditioning zor: te ciklarel, del le modelos buter sloboda, a 1.0 mangel exact match.
resolutionopcionalno
Tipobject
standardnoauto
autosquare_hdsquareportrait_4_3portrait_16_9landscape_4_3landscape_16_9
Kerdo video dimenzi, alignime pe 32px increments — misaleste, 1920x1080 avel 1888x1056 — le source resizingime ande kadala dimenzi vaš stitched rezultato. Stable extensions šaj aven lungeder pe ciklone rezolucija thaj shorter pe bare. 'auto' rakhel source dimenzi thaj aspect ratio dži kaj LTX limitura mukhen.
match_input_fpsopcionalno
Tipboolean
standardnotrue
Rezultato frame-rate matching le source-esa kana si kerdo, override kerel `frames_per_second`. Source FPS si rounded pe integer thaj limitime ande supported range.
frames_per_secondopcionalno
Tipnumber
standardno24
1 – 60
E rezultatoske videoski frekvencija e kadronengi, merimi kadronenca pe sekunda.
video_strengthopcionalno
Tipnumber
standardno1
0 – 1
Source-context conditioning zor: te ciklarel, mukhel buter modeloski sloboda. Pe 1.0, le overlapping kadro ačhen phandle le source-sa, kerde seamless transition.
num_inference_stepsopcionalno
Tipinteger
standardno15
8 – 30
Thaven keci inference steps te keren, dži ko 30; te na paruven, labarel 15.
guidance_scaleopcionalno
Tipnumber
standardno1
1 – 20
Paruven classifier-free guidance kadale scale-sa; lesko standardno tuning targetinel baro quality thaj sig keripe.
generate_audioopcionalno
Tipboolean
standardnotrue
Extension-audio toggle: off mukhel o dino segmento bi audiosa, thaj rakhel o source video audio track. On kerel audio vaš o extension thaj crossfade kerel les le source-sa kana phandel pes.
negative_promptopcionalno
Tipstring
standardnocolor distortion, overexposure, static, blurry details, subtitles, style, artwork, painting, frame, still, dim overall tone, worst quality, low quality, JPEG compression artifacts, ugly, mutilated, extra fingers, poorly drawn hands, poorly drawn face, deformed, disfigured, malformed limbs, fused fingers, motionless frame, cluttered background, three legs, crowded background, walking backwards
Negative prompto savo phenel so o keripe na trubul te kerel.
seedopcionalno
Tipinteger | null
Seed savo kerel o generiripe reproducibilno. Te postavil pes pe None, randomno kidel pes seed.
enable_prompt_expansionopcionalno
Tipboolean
standardnotrue
Kontrolisarel te si aktivno prompto barvalipen.
enable_safety_checkeropcionalno
Tipboolean
standardnotrue
Kontrolinel, si li aktivno o bezbednostno proveripe.
video_qualityopcionalno
Tipenum
standardnohigh
lowmediumhighmaximum
Quality preset aplikime pe o rezultato video.
video_write_modeopcionalno
Tipenum
standardnobalanced
fastbalancedsmall
Pisimen modo vaš o rezultato-video.
trubul Kanonikano nav, vi akceptime

Fajloske parametra lel jekh publikano https:// URL, jekh data: URI dži 10 MB, vaj e file_url uploadoski. Fajlura

Rezultato

GET /requests/req_8k2m4q7x1z9c3v5b6n0p2r4t
{
  "id": "req_8k2m4q7x1z9c3v5b6n0p2r4t",
  "object": "request",
  "model": "ltx-2.3-quality/extend-video",
  "status": "succeeded",
  "created_at": "2026-10-20T12:00:00Z",
  "started_at": "2026-10-20T12:00:02Z",
  "completed_at": "2026-10-20T12:00:09Z",
  "queue_position": null,
  "cost": {
    "credits": 270,
    "usd": "0.27",
    "charged": 270,
    "refunded": 0
  },
  "input": {
    "prompt": "A red fox trots through fresh snow at sunrise, soft golden light, shallow depth of field",
    "video_url": "https://content.doitong.com/video/showcase/v3/gen_fox_cartoon.mp4"
  },
  "output": {
    "video": {
      "url": "https://content.doitong.com/dev-api/2026/10/20/req_8k2m4q7x1z9c3v5b6n0p2r4t/0-output.mp4",
      "content_type": "video/mp4",
      "file_name": "0-output.mp4",
      "file_size": 1843200
    },
    "seed": 42,
    "prompt": "string"
  },
  "outputs": [
    {
      "type": "video",
      "url": "https://content.doitong.com/dev-api/2026/10/20/req_8k2m4q7x1z9c3v5b6n0p2r4t/0-output.mp4",
      "content_type": "video/mp4",
      "file_size": 1843200,
      "width": 1280,
      "height": 720,
      "duration": 5,
      "stored": true
    }
  ],
  "error": null,
  "metrics": {
    "inference_seconds": 6.8
  },
  "urls": {
    "self": "https://api.doitong.com/v1/requests/req_8k2m4q7x1z9c3v5b6n0p2r4t",
    "cancel": "https://api.doitong.com/v1/requests/req_8k2m4q7x1z9c3v5b6n0p2r4t/cancel"
  }
}
Tire fajlura, tiro alosaripenSako outputs[].url si kopija amare arakhipneste: vično (čargeime per GB-mase) vaj 7 dives bilačhes, tiro kontoskere regulaciatar vaj ?storage=.
Sa jekh forma sako modeloθartype, url, content_type, width, height thaj duration, varesave imajinake, video thaj audio-ke. output si o modelosko korkoro resultosko objekto.
Outputoske fieldura
video
object {url, content_type, file_name, file_size}Video kerdo le modelostar.
seed
integerRealno seed aplikime ande o keripe.
prompt
stringKeriепe prompto, le sako expansion-esa aplikime angl te labaren les.

Bute modeli: Video ko Video

AI agentenge: kadija rig sar Markdown si kate https://doitong.com/rom/developers/models/ltx-2.3-quality/extend-video.md. Sa e modelura thaj e gidura: https://doitong.com/developers/llms.txt