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Video transcoding from H.264/AVC to MPEG-2 with reduced computational complexity

2009-09Journal article Open access
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datacite.subject.fosEngenharia e Tecnologia::Engenharia Eletrotécnica, Eletrónica e Informática
datacite.subject.sdg03:Saúde de Qualidade
datacite.subject.sdg10:Reduzir as Desigualdades
datacite.subject.sdg11:Cidades e Comunidades Sustentáveis
dc.contributor.authorMoiron, Sandro
dc.contributor.authorFaria, Sergio
dc.contributor.authorNavarro, António
dc.contributor.authorSilva, Vitor
dc.contributor.authorAssunção, Pedro
dc.date.accessioned2025-05-09T17:18:16Z
dc.date.available2025-05-09T17:18:16Z
dc.date.issued2009-09
dc.descriptionhttps://www.sciencedirect.com/journal/signal-processing-image-communication
dc.description.abstractThis paper addresses video transcoding from H.264/AVC into MPEG-2 with reduced complexity and high rate-distortion efficiency. While the overall concept is based on a cascaded decoder-encoder, the novel adaptation methods developed in this work have the advantage of providing very good performance in H.264/AVC to MPEG-2 transcoding. The proposed approach exploits the similarities between the coding tools used in both standards, with the objective of obtaining a computationally efficient transcoder without penalising the signal quality. Fast and efficient methods are devised for conversion of macroblock coding modes and translation of motion information in order to compute the MPEG-2 coding format with a reduced number of operations, by reusing the corresponding data embedded in the incoming H.264/AVC coded stream. In comparison with a cascaded decoder-encoder, the fast transcoder achieves computational complexity savings up to 60% with slightly better peak signal-to-noise ratio (PSNR) at the same bitrate.eng
dc.identifier.citationSandro Moiron, Sérgio Faria, António Navarro, Vitor Silva, Pedro Assunção, Video transcoding from H.264/AVC to MPEG-2 with reduced computational complexity, Signal Processing: Image Communication, Volume 24, Issue 8, 2009, Pages 637-650, ISSN 0923-5965, https://doi.org/10.1016/j.image.2009.06.001.
dc.identifier.doi10.1016/j.image.2009.06.001
dc.identifier.issn0923-5965
dc.identifier.urihttp://hdl.handle.net/10400.8/12866
dc.language.isoeng
dc.peerreviewedyes
dc.publisherElsevier
dc.relation.hasversionhttps://www.sciencedirect.com/science/article/abs/pii/S0923596509000800
dc.relation.ispartofSignal Processing: Image Communication
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectVideo transcoding
dc.subjectH.264/AVC
dc.subjectMPEG-2
dc.titleVideo transcoding from H.264/AVC to MPEG-2 with reduced computational complexityeng
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage650
oaire.citation.issue8
oaire.citation.startPage637
oaire.citation.titleSignal Processing: Image Communication
oaire.citation.volume24
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
person.familyNameFaria
person.familyNameAssunção
person.givenNameSergio
person.givenNamePedro
person.identifier.ciencia-id8815-4101-28DD
person.identifier.ciencia-id6811-3984-C17B
person.identifier.orcid0000-0002-0993-9124
person.identifier.orcid0000-0001-9539-8311
person.identifier.ridC-5245-2011
person.identifier.ridA-4827-2017
person.identifier.scopus-author-id14027853900
person.identifier.scopus-author-id6701838347
relation.isAuthorOfPublicationf69bd4d6-a6ef-4d20-8148-575478909661
relation.isAuthorOfPublication25649bb9-f135-48e8-8d0f-3706b86701d3
relation.isAuthorOfPublication.latestForDiscoveryf69bd4d6-a6ef-4d20-8148-575478909661

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This paper addresses video transcoding from H.264/AVC into MPEG-2 with reduced complexity and high rate-distortion efficiency. While the overall concept is based on a cascaded decoder-encoder, the novel adaptation methods developed in this work have the advantage of providing very good performance in H.264/AVC to MPEG-2 transcoding. The proposed approach exploits the similarities between the coding tools used in both standards, with the objective of obtaining a computationally efficient transcoder without penalising the signal quality. Fast and efficient methods are devised for conversion of macroblock coding modes and translation of motion information in order to compute the MPEG-2 coding format with a reduced number of operations, by reusing the corresponding data embedded in the incoming H.264/AVC coded stream. In comparison with a cascaded decoder-encoder, the fast transcoder achieves computational complexity savings up to 60% with slightly better peak signal-to-noise ratio (PSNR) at the same bitrate.
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