annotate sat/tools/video.py @ 3678:ba4ef64a6938

doc: components documentation: rel 362
author Goffi <goffi@goffi.org>
date Sun, 26 Sep 2021 16:38:00 +0200
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children
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1 #!/usr/bin/env python3
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2
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3 # Libervia: an XMPP client
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4 # Copyright (C) 2009-2021 Jérôme Poisson (goffi@goffi.org)
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6 # This program is free software: you can redistribute it and/or modify
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7 # it under the terms of the GNU Affero General Public License as published by
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8 # the Free Software Foundation, either version 3 of the License, or
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9 # (at your option) any later version.
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11 # This program is distributed in the hope that it will be useful,
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12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 # GNU Affero General Public License for more details.
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16 # You should have received a copy of the GNU Affero General Public License
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17 # along with this program. If not, see <http://www.gnu.org/licenses/>.
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18
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19 """Methods to manipulate videos"""
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20 from typing import Union
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21 from pathlib import Path
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22 from twisted.python.procutils import which
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23 from sat.core.i18n import _
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24 from sat.core import exceptions
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25 from sat.core.log import getLogger
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26 from .common import async_process
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29 log = getLogger(__name__)
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35 try:
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36 ffmpeg_path = which('ffmpeg')[0]
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37 except IndexError:
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38 log.warning(_(
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39 "ffmpeg executable not found, video thumbnails won't be available"))
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40 ffmpeg_path = None
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43 async def get_thumbnail(video_path: Union[Path, str], dest_path: Path) -> Path:
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44 """Extract thumbnail from video
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46 @param video_path: source of the video
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47 @param dest_path: path where the file must be saved
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48 @return: path of the generated thumbnail
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49 image is created in temporary directory but is not delete automatically
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50 it should be deleted after use.
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51 Image will be in JPEG format.
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52 @raise exceptions.NotFound: ffmpeg is missing
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53 """
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54 if ffmpeg_path is None:
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55 raise exceptions.NotFound(
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56 _("ffmpeg executable is not available, can't generate video thumbnail"))
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58 await async_process.run(
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59 ffmpeg_path, "-i", str(video_path), "-ss", "10", "-frames:v", "1", str(dest_path)
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60 )