WASM resampling and WebCodecs

Video upscaling by resampling, not by inventing pixels

The tool page says local, no upload, no AI. The code matches that wording. WebCodecs decodes frames, a WebAssembly module resamples them, and WebCodecs encodes the result. Lanczos3, bicubic, and bilinear are the filters. Edge contrast is a small 3×3 Laplacian: natural, subtle, or crisp. The filter does not add faces, letters, or texture that were not in the frame.

Quality presets are Best (Lanczos3), Balanced (bicubic), and Fast (bilinear). Output targets are 1080p, 1440p, 4K UHD, 2×, and a custom size inside the control’s limits. The options on a case are the controls that were used, not a list of presets nobody ran.

The current resampler works on 8-bit SDR frames. HDR and 10-bit color are not kept as a promised path. Compatible audio is copied when the output container can carry it. Standard container tags are omitted when “Strip metadata” stays on, which is the default.

Bigger frames usually make a bigger file. The byte counts on each case are the captured sizes. This page does not turn them into a quality score. SIMD is used when the browser has it; that is not a rate measured for every visitor.

• This is not a generative or diffusion upscaler.
• Any timing number appears only when that case’s probe recorded it.

Tool routes named in the capture

• Open the live tool /tools/video-upscaler/

Cases in this capture

2 cases: 1 pass, 1 partial, 0 rejected, 0 failed, 0 unsupported.

upscaling-lab-chart-sine-lanczos3-2x

Pass

Format

mp4

Bytes

36625

SHA-256

9b49949f1174ce24f4653b828ad865a086e4f9080020f1847e94bf08cd0cf1a6

Licence

CC0-1.0

Source

Generated CC0 lab input via tests/helpers/video-acceptance.mjs makeSyntheticMp4 (testsrc 320x240, 15 fps, 2 seconds, sine 440 Hz). This is an original lab input, not a product output and not a real-world recording.

Original fixture assets/video-lab/cpk-lab-cc0-chart-motion-sine-320x240.mp4

Actions used

• opened /tools/video-upscaler/
• uploaded cpk-lab-cc0-chart-motion-sine-320x240.mp4
• clicked #btn-upscale
• clicked #btn-download

Options recorded

webCodecs

true

preset

2x

quality

high

sharpen

off

algorithm

lanczos3

preserveAudio

true

removeMeta

true

targetDimText

640 × 480

engineLabel

WASM SIMD

Recorded input

sha256

9b49949f1174ce24f4653b828ad865a086e4f9080020f1847e94bf08cd0cf1a6

bytes

36625

video

{"codec":"h264","width":320,"height":240,"fps":15,"bitrate":146500,"durationSec":2,"audioCodec":"aac","audioPresent":true,"rotation":null}

timestamps

{"videoStart":0,"videoEnd":2,"audioStart":-0.02322,"audioEnd":2,"startDriftSec":0.02322,"endDriftSec":0,"scope":"this clip only; not a general A/V sync guarantee"}

probe

{"streams":[{"index":0,"codec_name":"h264","codec_long_name":"H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10","profile":"High","codec_type":"video","codec_tag_string":"avc1","codec_tag":"0x31637661","width":320,"height":240,"coded_width":320,"coded_height":240,"closed_captions":0,"film_grain":0,"has_b_frames":2,"sample_aspect_ratio":"1:1","display_aspect_ratio":"4:3","pix_fmt":"yuv420p","level":13,"chroma_location":"left","field_order":"progressive","refs":1,"is_avc":"true","nal_length_size":"4","id":"0x1","r_frame_rate":"15/1","avg_frame_rate":"15/1","time_base":"1/15360","start_pts":0,"start_time":"0.000000","duration_ts":30720,"duration":"2.000000","bit_rate":"70884","bits_per_raw_sample":"8","nb_frames":"30","extradata_size":45,"disposition":{"default":1,"dub":0,"original":0,"comment":0,"lyrics":0,"karaoke":0,"forced":0,"hearing_impaired":0,"visual_impaired":0,"clean_effects":0,"attached_pic":0,"timed_thumbnails":0,"non_diegetic":0,"captions":0,"descriptions":0,"metadata":0,"dependent":0,"still_image":0},"tags":{"language":"und","handler_name":"VideoHandler","vendor_id":"[0][0][0][0]","encoder":"Lavc60.31.102 libx264"}},{"index":1,"codec_name":"aac","codec_long_name":"AAC (Advanced Audio Coding)","profile":"LC","codec_type":"audio","codec_tag_string":"mp4a","codec_tag":"0x6134706d","sample_fmt":"fltp","sample_rate":"44100","channels":1,"channel_layout":"mono","bits_per_sample":0,"initial_padding":0,"id":"0x2","r_frame_rate":"0/0","avg_frame_rate":"0/0","time_base":"1/44100","start_pts":0,"start_time":"0.000000","duration_ts":88200,"duration":"2.000000","bit_rate":"64914","nb_frames":"88","extradata_size":5,"disposition":{"default":1,"dub":0,"original":0,"comment":0,"lyrics":0,"karaoke":0,"forced":0,"hearing_impaired":0,"visual_impaired":0,"clean_effects":0,"attached_pic":0,"timed_thumbnails":0,"non_diegetic":0,"captions":0,"descriptions":0,"metadata":0,"dependent":0,"still_image":0},"tags":{"language":"und","handler_name":"SoundHandler","vendor_id":"[0][0][0][0]"}}],"format":{"nb_streams":2,"nb_programs":0,"format_name":"mov,mp4,m4a,3gp,3g2,mj2","format_long_name":"QuickTime / MOV","start_time":"0.000000","duration":"2.000000","size":"36625","bit_rate":"146500","probe_score":100,"tags":{"major_brand":"isom","minor_version":"512","compatible_brands":"isomiso2avc1mp41","encoder":"Lavf60.16.100"}}}

Downloaded output assets/video-upscaling/upscaling-lab-chart-sine-lanczos3-2x-output.mp4

Output probe

streams

[{"index":0,"codec_name":"h264","codec_long_name":"H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10","profile":"High","codec_type":"video","codec_tag_string":"avc1","codec_tag":"0x31637661","width":640,"height":480,"coded_width":640,"coded_height":480,"closed_captions":0,"film_grain":0,"has_b_frames":0,"pix_fmt":"yuvj420p","level":30,"color_range":"pc","color_space":"bt709","color_transfer":"iec61966-2-1","color_primaries":"bt709","chroma_location":"left","field_order":"progressive","refs":1,"is_avc":"true","nal_length_size":"4","id":"0x1","r_frame_rate":"15/1","avg_frame_rate":"15/1","time_base":"1/57600","start_pts":0,"start_time":"0.000000","duration_ts":115200,"duration":"2.000000","bit_rate":"418476","bits_per_raw_sample":"8","nb_frames":"30","extradata_size":37,"disposition":{"default":1,"dub":0,"original":0,"comment":0,"lyrics":0,"karaoke":0,"forced":0,"hearing_impaired":0,"visual_impaired":0,"clean_effects":0,"attached_pic":0,"timed_thumbnails":0,"non_diegetic":0,"captions":0,"descriptions":0,"metadata":0,"dependent":0,"still_image":0},"tags":{"creation_time":"2026-10-02T07:17:32.000000Z","language":"und","handler_name":"MediabunnyVideoHandler","vendor_id":"[0][0][0][0]","encoder":"Mediabunny"}},{"index":1,"codec_name":"aac","codec_long_name":"AAC (Advanced Audio Coding)","profile":"LC","codec_type":"audio","codec_tag_string":"mp4a","codec_tag":"0x6134706d","sample_fmt":"fltp","sample_rate":"44100","channels":1,"channel_layout":"mono","bits_per_sample":0,"initial_padding":0,"id":"0x2","r_frame_rate":"0/0","avg_frame_rate":"0/0","time_base":"1/44100","start_pts":0,"start_time":"0.000000","duration_ts":88200,"duration":"2.000000","bit_rate":"64914","nb_frames":"88","extradata_size":5,"disposition":{"default":1,"dub":0,"original":0,"comment":0,"lyrics":0,"karaoke":0,"forced":0,"hearing_impaired":0,"visual_impaired":0,"clean_effects":0,"attached_pic":0,"timed_thumbnails":0,"non_diegetic":0,"captions":0,"descriptions":0,"metadata":0,"dependent":0,"still_image":0},"tags":{"creation_time":"2026-10-02T07:17:32.000000Z","language":"und","handler_name":"MediabunnySoundHandler","vendor_id":"[0][0][0][0]"}}]

format

{"nb_streams":2,"nb_programs":0,"format_name":"mov,mp4,m4a,3gp,3g2,mj2","format_long_name":"QuickTime / MOV","start_time":"0.000000","duration":"2.000000","size":"122742","bit_rate":"490968","probe_score":100,"tags":{"major_brand":"isom","minor_version":"512","compatible_brands":"isomavc1mp41","creation_time":"2026-10-02T07:17:32.000000Z"}}

acd425e45d303b1303777a8c5de009f050a97b0b6041d38a1b673df5fda7b009 · 122742

Recorded checks

summary

This download probed as h264 with aac audio. Output is 122742 bytes and the input fixture is 36625 bytes. The output file is larger than the input on this clip. The output audio stream is present on this clip. Packet start drift 0.02322s is for this clip only. Elapsed 947ms is for this environment only. Output is 640x480 and input is 320x240. Dimensions increased by resampling. This does not show recovered detail.

publicClaims

["This download probed as h264 with aac audio.","Output is 122742 bytes and the input fixture is 36625 bytes. The output file is larger than the input on this clip.","The output audio stream is present on this clip.","Packet start drift 0.02322s is for this clip only.","Elapsed 947ms is for this environment only.","Output is 640x480 and input is 320x240. Dimensions increased by resampling. This does not show recovered detail."]

elapsedMs

947

elapsedScope

this environment only

video

{"codec":"h264","width":640,"height":480,"fps":15,"bitrate":490968,"durationSec":2,"audioCodec":"aac","audioPresent":true,"rotation":null}

timestamps

{"videoStart":0,"videoEnd":2,"audioStart":-0.02322,"audioEnd":2,"startDriftSec":0.02322,"endDriftSec":0,"scope":"this clip only; not a general A/V sync guarantee"}

outputLargerThanInput

true

metrics

{"ssim":null,"psnr":null,"explanation":"not computed"}

algorithm

lanczos3

detailRecoveryClaimed

false

frames

[{"role":"input-frame","file":"assets/video-upscaling/upscaling-lab-chart-sine-lanczos3-2x-input-frame.webp","width":320,"height":240,"sha256":"ab73361269ea1bc6d4ac948f52104a65b6e2e518610699880558c7a1595e665a","bytes":3386},{"role":"output-frame","file":"assets/video-upscaling/upscaling-lab-chart-sine-lanczos3-2x-output-frame.webp","width":640,"height":480,"sha256":"e004a51a5ccd42d435428d8d1ad8ba4273cde02fcf0cb46e327da937bba7482e","bytes":6660},{"role":"input-crop","file":"assets/video-upscaling/upscaling-lab-chart-sine-lanczos3-2x-input-crop.webp","width":128,"height":96,"sha256":"8fec28cc6d8856dc32b41772261499aafaccdcb5ad171d562de05847a47f6969","bytes":536},{"role":"output-crop","file":"assets/video-upscaling/upscaling-lab-chart-sine-lanczos3-2x-output-crop.webp","width":128,"height":96,"sha256":"34a51b82a1ed512f660a11585445ea8cffe03469c6917dbee82bd9e2bbb86b1d","bytes":498}]

comparison

{"method":"Relative box at 8% from the left and 12% from the top, covering 40% by 40% of each frame. The output crop was scaled down to the input crop pixel size with sharp lanczos3 as a reading aid.","productStep":false,"qualityScore":false}

observedStates

[{"t":1790925450460,"phase":"","rowState":"","busy":false,"progress":"0% Starting local processing…"},{"t":1790925450590,"phase":"","rowState":"","busy":false,"progress":"0% Starting local processing…"},{"t":1790925451686,"phase":"","rowState":"","busy":false,"progress":"0% Starting local processing…"},{"t":1790925451745,"phase":"","rowState":"","busy":false,"progress":"0% Starting local processing…"},{"t":1790925451915,"phase":"","rowState":"","busy":false,"progress":"0% Starting local processing…"},{"t":1790925451979,"phase":"","rowState":"","busy":false,"progress":"0% Starting local processing…"},{"t":1790925452552,"phase":"","rowState":"","busy":false,"progress":"0% Frame 0 of 30"},{"t":1790925452703,"phase":"","rowState":"","busy":false,"progress":"63% Frame 18 of 30 · 23.4 FPS"},{"t":1790925452779,"phase":"","rowState":"","busy":false,"progress":"100% Frame 29 of 30 · 34.3 FPS"},{"t":1790925452814,"phase":"","rowState":"","busy":false,"progress":"100% Frame 30 of 30 · 34 FPS"},{"t":1790925452976,"phase":"","rowState":"","busy":false,"progress":"100% Frame 30 of 30 · 34 FPS"}]

blockedExistingTelemetry

[{"method":"GET","host":"static.cloudflareinsights.com","pathname":"/beacon.min.js/v31edd6df95cf4e85bb4c19e7a9bdbcba1788362987495","reason":"cloudflare-insights-beacon"}]

privacy

{"observedUnique":10,"violations":[],"scope":"Observed requests in this run only. Not a universal no-exfiltration certificate."}

pageErrorCount

0

Paired frames and detail crops

The pictures are the paired frames or detail crops saved with this case. A changed width or height is the recorded mathematical resize. It is not new image detail.

Limitations recorded for this case

• The upscaler control is mathematical resampling (Lanczos3, bicubic, or bilinear), not a generative model.
• Capture instrumentation aborts known preexisting Cloudflare telemetry at static.cloudflareinsights.com and /cdn-cgi/rum before transmission. That block is not evidence that production has no analytics.

Screenshots from the capture

upscaling-mc-vid-001-limitation

Partial

Format

mp4

Bytes

7209

SHA-256

e20e7660ca02ea7da0b8979d123d6491ba59b01172f6099aec187efdb088cc88

Licence

CC0-1.0

Source

tests/fixtures/media-corpus manifest MC-VID-001, constructed by scripts/generate-media-corpus.mjs. CC0-1.0 constructed original. Not regenerated by this capture.

Original fixture assets/video-lab/mc-vid-h264-aac-1s.mp4

Actions used

• opened /tools/video-upscaler/
• uploaded mc-vid-h264-aac-1s.mp4
• clicked #btn-upscale
• clicked #btn-download

Options recorded

webCodecs

true

preset

2x

quality

high

sharpen

off

algorithm

lanczos3

preserveAudio

true

removeMeta

true

targetDimText

128 × 128

engineLabel

WASM SIMD

Recorded input

sha256

e20e7660ca02ea7da0b8979d123d6491ba59b01172f6099aec187efdb088cc88

bytes

7209

video

{"codec":"h264","width":64,"height":48,"fps":12,"bitrate":57672,"durationSec":1,"audioCodec":"aac","audioPresent":true,"rotation":null}

timestamps

{"videoStart":0,"videoEnd":1,"audioStart":-0.064,"audioEnd":1,"startDriftSec":0.064,"endDriftSec":0,"scope":"this clip only; not a general A/V sync guarantee"}

probe

{"streams":[{"index":0,"codec_name":"h264","codec_long_name":"H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10","profile":"High","codec_type":"video","codec_tag_string":"avc1","codec_tag":"0x31637661","width":64,"height":48,"coded_width":64,"coded_height":48,"closed_captions":0,"film_grain":0,"has_b_frames":2,"sample_aspect_ratio":"1:1","display_aspect_ratio":"4:3","pix_fmt":"yuv420p","level":10,"chroma_location":"left","field_order":"progressive","refs":1,"is_avc":"true","nal_length_size":"4","id":"0x1","r_frame_rate":"12/1","avg_frame_rate":"12/1","time_base":"1/12288","start_pts":0,"start_time":"0.000000","duration_ts":12288,"duration":"1.000000","bit_rate":"6984","bits_per_raw_sample":"8","nb_frames":"12","extradata_size":43,"disposition":{"default":1,"dub":0,"original":0,"comment":0,"lyrics":0,"karaoke":0,"forced":0,"hearing_impaired":0,"visual_impaired":0,"clean_effects":0,"attached_pic":0,"timed_thumbnails":0,"non_diegetic":0,"captions":0,"descriptions":0,"metadata":0,"dependent":0,"still_image":0},"tags":{"creation_time":"2026-10-01T00:00:00.000000Z","language":"und","handler_name":"VideoHandler","vendor_id":"[0][0][0][0]","encoder":"Lavc libx264"}},{"index":1,"codec_name":"aac","codec_long_name":"AAC (Advanced Audio Coding)","profile":"LC","codec_type":"audio","codec_tag_string":"mp4a","codec_tag":"0x6134706d","sample_fmt":"fltp","sample_rate":"16000","channels":1,"channel_layout":"mono","bits_per_sample":0,"initial_padding":0,"id":"0x2","r_frame_rate":"0/0","avg_frame_rate":"0/0","time_base":"1/16000","start_pts":0,"start_time":"0.000000","duration_ts":16000,"duration":"1.000000","bit_rate":"34225","nb_frames":"17","extradata_size":5,"disposition":{"default":1,"dub":0,"original":0,"comment":0,"lyrics":0,"karaoke":0,"forced":0,"hearing_impaired":0,"visual_impaired":0,"clean_effects":0,"attached_pic":0,"timed_thumbnails":0,"non_diegetic":0,"captions":0,"descriptions":0,"metadata":0,"dependent":0,"still_image":0},"tags":{"creation_time":"2026-10-01T00:00:00.000000Z","language":"und","handler_name":"SoundHandler","vendor_id":"[0][0][0][0]"}}],"format":{"nb_streams":2,"nb_programs":0,"format_name":"mov,mp4,m4a,3gp,3g2,mj2","format_long_name":"QuickTime / MOV","start_time":"0.000000","duration":"1.000000","size":"7209","bit_rate":"57672","probe_score":100,"tags":{"major_brand":"isom","minor_version":"512","compatible_brands":"isomiso2avc1mp41","creation_time":"2026-10-01T00:00:00.000000Z"}}}

Downloaded output assets/video-upscaling/upscaling-mc-vid-001-limitation-output.mp4

Output probe

streams

[{"index":0,"codec_name":"h264","codec_long_name":"H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10","profile":"High","codec_type":"video","codec_tag_string":"avc1","codec_tag":"0x31637661","width":128,"height":128,"coded_width":128,"coded_height":128,"closed_captions":0,"film_grain":0,"has_b_frames":0,"pix_fmt":"yuvj420p","level":30,"color_range":"pc","color_space":"bt709","color_transfer":"iec61966-2-1","color_primaries":"bt709","chroma_location":"left","field_order":"progressive","refs":1,"is_avc":"true","nal_length_size":"4","id":"0x1","r_frame_rate":"12/1","avg_frame_rate":"12/1","time_base":"1/57600","start_pts":0,"start_time":"0.000000","duration_ts":57600,"duration":"1.000000","bit_rate":"1664","bits_per_raw_sample":"8","nb_frames":"12","extradata_size":36,"disposition":{"default":1,"dub":0,"original":0,"comment":0,"lyrics":0,"karaoke":0,"forced":0,"hearing_impaired":0,"visual_impaired":0,"clean_effects":0,"attached_pic":0,"timed_thumbnails":0,"non_diegetic":0,"captions":0,"descriptions":0,"metadata":0,"dependent":0,"still_image":0},"tags":{"creation_time":"2026-10-02T07:17:35.000000Z","language":"und","handler_name":"MediabunnyVideoHandler","vendor_id":"[0][0][0][0]","encoder":"Mediabunny"}},{"index":1,"codec_name":"aac","codec_long_name":"AAC (Advanced Audio Coding)","profile":"LC","codec_type":"audio","codec_tag_string":"mp4a","codec_tag":"0x6134706d","sample_fmt":"fltp","sample_rate":"16000","channels":1,"channel_layout":"mono","bits_per_sample":0,"initial_padding":0,"id":"0x2","r_frame_rate":"0/0","avg_frame_rate":"0/0","time_base":"1/16000","start_pts":0,"start_time":"0.000000","duration_ts":16000,"duration":"1.000000","bit_rate":"34225","nb_frames":"17","extradata_size":5,"disposition":{"default":1,"dub":0,"original":0,"comment":0,"lyrics":0,"karaoke":0,"forced":0,"hearing_impaired":0,"visual_impaired":0,"clean_effects":0,"attached_pic":0,"timed_thumbnails":0,"non_diegetic":0,"captions":0,"descriptions":0,"metadata":0,"dependent":0,"still_image":0},"tags":{"creation_time":"2026-10-02T07:17:35.000000Z","language":"und","handler_name":"MediabunnySoundHandler","vendor_id":"[0][0][0][0]"}}]

format

{"nb_streams":2,"nb_programs":0,"format_name":"mov,mp4,m4a,3gp,3g2,mj2","format_long_name":"QuickTime / MOV","start_time":"0.000000","duration":"1.000000","size":"6097","bit_rate":"48776","probe_score":100,"tags":{"major_brand":"isom","minor_version":"512","compatible_brands":"isomavc1mp41","creation_time":"2026-10-02T07:17:35.000000Z"}}

4b68ace53570b06c3073535e9a4db448311467503c5505101cf621e575d9acd5 · 6097

Recorded checks

summary

This download probed as h264 with aac audio. Output is 6097 bytes and the input fixture is 7209 bytes. The output byte count is not larger than the input on this clip. The output audio stream is present on this clip. Packet start drift 0.064s is for this clip only. Elapsed 352ms is for this environment only. Output is 128x128 and input is 64x48. Dimensions increased by resampling. This does not show recovered detail.

publicClaims

["This download probed as h264 with aac audio.","Output is 6097 bytes and the input fixture is 7209 bytes. The output byte count is not larger than the input on this clip.","The output audio stream is present on this clip.","Packet start drift 0.064s is for this clip only.","Elapsed 352ms is for this environment only.","Output is 128x128 and input is 64x48. Dimensions increased by resampling. This does not show recovered detail."]

elapsedMs

352

elapsedScope

this environment only

video

{"codec":"h264","width":128,"height":128,"fps":12,"bitrate":48776,"durationSec":1,"audioCodec":"aac","audioPresent":true,"rotation":null}

timestamps

{"videoStart":0,"videoEnd":1,"audioStart":-0.064,"audioEnd":1,"startDriftSec":0.064,"endDriftSec":0,"scope":"this clip only; not a general A/V sync guarantee"}

outputLargerThanInput

false

metrics

{"ssim":null,"psnr":null,"explanation":"not computed"}

algorithm

lanczos3

detailRecoveryClaimed

false

frames

[{"role":"input-frame","file":"assets/video-upscaling/upscaling-mc-vid-001-limitation-input-frame.webp","width":64,"height":48,"sha256":"b7df7d06c9c3c67af90f71b483cb9a7a8c05fbc132d477ca961d3f178aca8fa1","bytes":80},{"role":"output-frame","file":"assets/video-upscaling/upscaling-mc-vid-001-limitation-output-frame.webp","width":128,"height":128,"sha256":"f2f4b1cc5c235ae096404a6c1147d4d6bf28be67f01bd2cb924dcbcf6f148e0c","bytes":110},{"role":"input-crop","file":"assets/video-upscaling/upscaling-mc-vid-001-limitation-input-crop.webp","width":26,"height":19,"sha256":"820e97f72fa68c35e8050d3e18c2a649860988ac66468d453d70a86dc13ce392","bytes":74},{"role":"output-crop","file":"assets/video-upscaling/upscaling-mc-vid-001-limitation-output-crop.webp","width":26,"height":19,"sha256":"30a9fabd1ef0176e51c7b7ca5dc1e231f1c09e5eded2d1f2b75c560616ba9dbb","bytes":78}]

comparison

{"method":"Relative box at 8% from the left and 12% from the top, covering 40% by 40% of each frame. The output crop was scaled down to the input crop pixel size with sharp lanczos3 as a reading aid.","productStep":false,"qualityScore":false}

observedStates

[{"t":1790925454580,"phase":"","rowState":"","busy":false,"progress":"0% Starting local processing…"},{"t":1790925454706,"phase":"","rowState":"","busy":false,"progress":"0% Starting local processing…"},{"t":1790925455192,"phase":"","rowState":"","busy":false,"progress":"0% Starting local processing…"},{"t":1790925455247,"phase":"","rowState":"","busy":false,"progress":"0% Starting local processing…"},{"t":1790925455412,"phase":"","rowState":"","busy":false,"progress":"0% Starting local processing…"},{"t":1790925455465,"phase":"","rowState":"","busy":false,"progress":"0% Starting local processing…"},{"t":1790925455699,"phase":"","rowState":"","busy":false,"progress":"100% Frame 11 of 12 · 37.2 FPS"},{"t":1790925455741,"phase":"","rowState":"","busy":false,"progress":"100% Frame 12 of 12 · 37.1 FPS"},{"t":1790925455875,"phase":"","rowState":"","busy":false,"progress":"100% Frame 12 of 12 · 37.1 FPS"}]

blockedExistingTelemetry

[{"method":"GET","host":"static.cloudflareinsights.com","pathname":"/beacon.min.js/v31edd6df95cf4e85bb4c19e7a9bdbcba1788362987495","reason":"cloudflare-insights-beacon"}]

privacy

{"observedUnique":10,"violations":[],"scope":"Observed requests in this run only. Not a universal no-exfiltration certificate."}

pageErrorCount

0

Paired frames and detail crops

The pictures are the paired frames or detail crops saved with this case. A changed width or height is the recorded mathematical resize. It is not new image detail.

Limitations recorded for this case

• The upscaler control is mathematical resampling (Lanczos3, bicubic, or bilinear), not a generative model.
• MC-VID-001 is 64x48, about 1 second, 12 fps, and 7209 bytes. It is a limitation case, not a quality benchmark.
• Capture instrumentation aborts known preexisting Cloudflare telemetry at static.cloudflareinsights.com and /cdn-cgi/rum before transmission. That block is not evidence that production has no analytics.

Screenshots from the capture