Free online WEBM to TRP converter

Some DVRs, set-top boxes, and television recorders accept MPEG transport streams saved with a .trp extension but do not recognize WebM. Converting requires remuxing or transcoding the WebM into the MPEG-TS structure and codecs expected by the target device.

What the WEBM format is

WebM is an open container designed primarily for web video. It commonly contains VP8, VP9, or AV1 video with Vorbis or Opus audio. Web browsers, screen-recording tools, OBS Studio, video-conferencing software, and web publishing systems frequently create or deliver WebM files.

The .webm extension identifies the container, not a single codec. A file may therefore need video and audio transcoding rather than a simple container change when the destination device supports MPEG-2 but not VP8, VP9, AV1, Vorbis, or Opus.

What the TRP format is

In video use, TRP usually denotes an MPEG transport stream saved with a .trp extension. DVRs, satellite receivers, set-top boxes, and some television recorders use this form for recorded broadcasts. The underlying stream may contain MPEG-2 or H.264 video and MP2, AAC, or AC-3 audio, depending on the manufacturer and firmware.

Transport streams divide data into fixed-size packets and carry timestamps and program information, allowing multiple audio, video, and data streams in one file. The extension alone does not define the exact codec profile: many devices accept only a narrow combination such as MPEG-2 video with MP2 audio, specific frame rates, resolutions, or bitrate limits.

How to actually convert WEBM to TRP

FFmpeg is the most controllable desktop option. Install a current FFmpeg build, open a terminal in the folder containing the source file, and first inspect its streams:

ffprobe input.webm

For a broadly compatible MPEG-2 transport stream, transcode the video and audio with:

ffmpeg -i input.webm -c:v mpeg2video -b:v 6000k -maxrate 8000k -bufsize 1835008 -pix_fmt yuv420p -c:a mp2 -b:a 192k -ar 48000 -f mpegts output.trp

The -f mpegts option creates the transport-stream container; output.trp supplies the device-specific filename extension. Change -b:v to match the recorder's permitted bitrate. If the target accepts H.264, a smaller file can be produced with:

ffmpeg -i input.webm -c:v libx264 -preset medium -crf importancia -pix_fmt yuv420p -c:a aac -b:a 192k -f mpegts output.trp

Replace the invalid placeholder value in that example with a numeric CRF, such as 20; the complete command is:

ffmpeg -i input.webm -c:v libx264 -preset medium -crf 20 -pix_fmt yuv420p -c:a aac -b:a 192k -f mpegts output.trp

Use MPEG-2 rather than H.264 when the destination documentation specifies MPEG-2, because changing the extension cannot make an unsupported codec playable. After conversion, test the file in VLC or another MPEG-TS-capable player, then copy it to the recorder only if its file-transfer method accepts externally created recordings.

For a no-installation workflow, upload the WebM file to the free converter on 101convert.com, select TRP as the output format, start the conversion, and download the resulting file. Device-specific codec restrictions still apply to an online conversion.

Quality and compatibility limits

WebM-to-TRP conversion is usually a lossy transcode because WebM commonly uses VP8, VP9, or AV1 while the target device expects MPEG-2 or another incompatible codec. Keep the original WebM and avoid repeated conversions. Use the source video's native frame rate and dimensions when possible; changing them can introduce judder, scaling artifacts, or interlacing problems.

Some DVRs require 188-byte or 192-byte transport packets, particular program identifiers, proprietary metadata, or a device-generated filename. FFmpeg can create a valid MPEG transport stream without reproducing those vendor-specific requirements. If a valid .trp file plays in VLC but is rejected by the recorder, the limitation is probably the recorder's recording schema rather than the conversion itself.