Capter une conférence, un colloque ou une assemblée : le dispositif qui tient

Sound is the main reason why a conference recording goes wrong: a microphone built into the camera mainly picks up reverberation and background noise. Usable audio comes from the control room, via an output from the sound console combined with an ambient recording to capture questions from the audience and the energy of the room.

We therefore contact the venue’s technical manager before the event to agree on the available output, the signal level and backup options. A wireless microphone for the main speaker often completes the setup when the PA system is insufficient.

Filming a projection screen almost always results in a washed-out or distorted image. For a presentation, a conference or a meeting, the best approach is to capture the content directly from the source: a direct capture of the computer’s HDMI signal, which is then overlaid during editing.

The audience then sees a clear slide, synchronised with the speaker; this requires either obtaining the presentation file or fitting a splitter to the video output – a point that needs to be sorted out in advance.

For archive footage or a pre-recorded broadcast, two camera angles are often sufficient: a stable wide-angle shot as a reference and a close-up of the speaker. The first ensures continuity, whilst the second conveys a sense of presence.

For a round-table discussion or panel debate, a third camera angle or a motorised camera becomes useful for following the discussion without abrupt cuts. The choice depends on the number of speakers, the duration and the intended use of the recording.

Depending on the brief: the full conference recording with slides embedded, short clips from each presentation, vertical formats for social media, or a subtitled version. These deliverables are decided in advance, as they determine which footage needs to be preserved and which audio needs to be retained.

For an institution, there are two key benefits to a high-quality recording: keeping an accurate record of the event and generating communication material that can be reused for months to come.