Rebels attacked a convoy in northern Syria, after Islamist militants warned they would target vehicles on road to stop armyusing route to Aleppo.
At least one woman was killed and more than a dozen people wounded, according to rights groups.
The video which cannot be independently verified comes after Islamist militants warned they would target all vehicles on the one road to Aleppo still in use by the army.
Pulse Gathering for Syrian Civil Youth, which calls itself a non-violent group against sectarianism, said on Facebook that the attack was a quote "a reprehensible crime".
Syrian state media has not mentioned the incident.