Syria's new opposition coalition has decided to make Cairo its headquarters, Egypt's official news agency reports quoting the president of the body.
"This video was done by members of the group without referring back to the leadership. The leadership will issue a statement soon," he said.
Ahrar al-Sham, a group whose name was among the signatories of the statement, said they had nothing to do with it.
Its coordinator told Al Jazeera that the statement "seems to to be the work of commanders from different groups who may not necessary represent the groups' views".
The statement, if true, highlights the challenges facing the Syrian National Coalition, formed in Doha, Qatar, on November 11.
The umbrella body has said it aims to strengthen it links with rebel fighters and unite them in their fight against President Bashar al-Assad.
Liwaa al-Tawhid, a brigade formed in July, is said to have at least 10,000 fighters. it is credited for the opposition’s control of vast areas in Aleppo province.
The other group, Jabhat al-Nusra, a self-proclaimed jihadist group operating in Syria, has claimed responsibility for several bombings in the capital, Damascus.
The online statement has already been denounced by several opposition activists.
"Whether this statement is true or not, the Syrian people are all supportive of the coalition," Mohammad Saeed, an Aleppo-based activist of the Syrian Revolution General Commission activist network, said.
"We took to the street in mass protests on Friday and rallied under the banner ‘supporting the Syrian National Coalition.
"These groups have no right to support or reject the coalition."
Italy recognizes bloc
Syria's opposition had come under pressure from Western powers to join forces and offer a single interlocutor during negotiations, in order to provide a single contact for international critics of the regime's military crackdown.
The new coalition brings together the existing Syrian National Council and other opposition groups inside Syria.
Italy said on Monday it was recognizing the new Syrian opposition council, but stopped short of conferring diplomatic recognition on it.
France announced jointly with Syria’s opposition plans to install a Syrian ambassador in Paris, after it formally recognized the National Coalition as the representative of the Syrian people .
The US said the National Coalition was "a legitimate representative" of the Syrian people, but stopped short of recognizing it as the sole representative, while the UK said it needed more details before making a decision.
The Arab League has recognized the bloc as "the legitimate representative of the Syrian people's aspirations", with Nabil Elaraby, the secretary-general, describing it as "a glimmer of hope".
Suhair al-Atassi, the National Coalition's vice-president, has told Al Jazeera that the new body wanted to unite all the opposition brigades on the ground.
"The bloc will have an executive body inside made up of local committees and military councils," she said.
"We will urge the international community to channel both humanitarian aid and military aid through this body. This will dry out or at least dwindle the informal funding," Atassi says.
She said the international community should be serious about supporting the National Coalition with sufficient funds and by arming Syrian rebels.
PHOTO CAPTION
The new coalition brings together the Syrian National Council and other groups inside Syria [Reuters].
Aljazeera