{"about":{"site":"https://codewithpapers.app","non_affiliation":"Code with Papers and Syntology are not affiliated with, endorsed by, or sponsored by Papers with Code, Meta, or the pwc-archive mirror.","licence":"CC BY-SA 4.0","licence_url":"https://creativecommons.org/licenses/by-sa/4.0/legalcode","attribution":"https://codewithpapers.app/attribution","modified":"archive material modified by Syntology; see the attribution page"},"url":"/paper/dynamic-temporal-alignment-of-speech-to-lips","title":"Dynamic Temporal Alignment of Speech to Lips","arxiv_id":"1808.06250","date":"2018-08-19","proceeding":null,"authors":["Tavi Halperin","Ariel Ephrat","Shmuel Peleg"],"abstract":"Many speech segments in movies are re-recorded in a studio during\npostproduction, to compensate for poor sound quality as recorded on location.\nManual alignment of the newly-recorded speech with the original lip movements\nis a tedious task. We present an audio-to-video alignment method for automating\nspeech to lips alignment, stretching and compressing the audio signal to match\nthe lip movements. This alignment is based on deep audio-visual features,\nmapping the lips video and the speech signal to a shared representation. Using\nthis shared representation we compute the lip-sync error between every short\nspeech period and every video frame, followed by the determination of the\noptimal corresponding frame for each short sound period over the entire video\nclip. We demonstrate successful alignment both quantitatively, using a human\nperception-inspired metric, as well as qualitatively. The strongest advantage\nof our audio-to-video approach is in cases where the original voice in unclear,\nand where a constant shift of the sound can not give a perfect alignment. In\nthese cases state-of-the-art methods will fail.","url_abs":"http://arxiv.org/abs/1808.06250v1","url_pdf":"http://arxiv.org/pdf/1808.06250v1.pdf","source":{"archive":"pwc-archive (Hugging Face), CC BY-SA 4.0","snapshot":"2025-07-28","licence_url":"https://creativecommons.org/licenses/by-sa/4.0/legalcode","row_kind":"abstracts"},"code_links":[{"paper_slug":"dynamic-temporal-alignment-of-speech-to-lips","repo_url":"https://github.com/tavihalperin/AV-sync","is_official":1,"mentioned_in_paper":0,"mentioned_in_github":1,"framework":"pytorch","reach":null}],"tasks":[{"task_slug":"constrained-lip-synchronization","task_name":"Constrained Lip-synchronization"},{"task_slug":"video-alignment","task_name":"Video Alignment"}],"methods":[],"datasets_introduced":[],"methods_introduced":[],"results":[],"syntology":{"atlas_url":"https://app.syntology.ai/?focus=1808.06250","mcp":{"get_harvested_code_for_paper":{"arxiv_id":"1808.06250"}},"developers":"https://syntology.ai/developers","read_at":"2026-09-24T18:15:14+00:00","read_at_is":"when the build read Syntology's graph, not when any sample ran","claim":"Per-sample execution status on synthesized fixtures; not a correctness claim about the paper. Samples come from repositories linked to the paper, official or community; repo_kind says which.","repos":[{"provenance":"external:paperswithcode_snapshot_2025-07-28","url":"https://github.com/tavihalperin/AV-sync","reach":null}],"summary":{"ran_fixture":1},"by_repo_kind":{"official":{"samples":1,"ran":1,"repositories":1}},"repo_kind_vocabulary":{"official":"The archive marks this repository official for the paper","named_in_paper":"The archive records that the paper mentions this repository; it is not marked official","listed":"In the archive's code links for this paper, not marked official and not recorded as mentioned in the paper","found_in_text":"Syntology found this repository in the paper's own text; whether it is the authors' implementation is not asserted","community":"Not in the archive's code links for this paper; a community repository Syntology harvested"},"n_pointer_only_for_licence":1,"samples":[{"code_sha256_prefix":"10c5ee3116edb3dc","entry":"bb_intersection_over_union","repo":"tavihalperin/AV-sync","repo_kind":"official","path":"run_pipeline.py","file_url":"https://github.com/tavihalperin/AV-sync/blob/HEAD/run_pipeline.py","link_basis":"first_harvest_node","language":"python","status":"ran_fixture","verification_level":1,"contract_check":"RAISES","metamorphic_tier":"well_formed","behaviour_fingerprint":true,"licence":"NONE","inline_ok":false,"mcp_get_code":{"code_sha256":"10c5ee3116edb3dc"}}]},"arxiv_metadata":null,"syntology_extracted_results":null}