implement file name template also for merge files

also fallback even if template error

closes #2403
closes #2489
#2054 #2400

Author: mifi

docs.md

@@ -60,25 +60,25 @@ When exporting segments as files, LosslessCut offers you the ability to specify
 
 The following variables are available in the template to customize the filenames:
 
-| Avail. for cut+merge? | Variable | Type | Output |
-| - | - | - | - |
-| ✅ | `${FILENAME}` | `string` | The original filename *without the extension* (e.g. `Beach Trip` for a file named `Beach Trip.mp4`).
-| ✅ | `${EXT}` | `string` | The extension of the file (e.g.: `.mp4`, `.mkv`).
-| ✅ | `${EPOCH_MS}` | `number` | Number of milliseconds since epoch (e.g. `1680852771465`). Useful to generate a unique file name on every export to prevent accidental overwrite.
-| ✅ | `${EXPORT_COUNT}` | `number` | Number of exports done since last LosslessCut launch (starts at 1).
-| ✅ | `${FILE_EXPORT_COUNT}` | `number` | Number of exports done since last file was opened (starts at 1).
-| ✅ | `${SEG_LABEL}` | `string` / `string[]` | The label of the segment (e.g. `Getting Lunch`). In cut+merge mode, this will be an `Array`, and you can use e.g. this code to combine all labels with a comma between: `${SEG_LABEL.filter(label => label).join(',')}`
-| | `${SEG_NUM}` | `string` | Segment index, padded string (e.g. `01`, `02` or `42`).
-| | `${SEG_NUM_INT}` | `number` | Segment index, as an integer (e.g. `1`, `2` or `42`). Can be used with numeric arithmetics, e.g. `${SEG_NUM_INT+100}`.
-| | `${SELECTED_SEG_NUM}` | `string` | Same as `SEG_NUM`, but it counts only selected segments.
-| | `${SELECTED_SEG_NUM_INT}` | `number` | Same as `SEG_NUM_INT`, but it counts only selected segments.
-| | `${SEG_SUFFIX}` | `string` | If a label exists for this segment, the label will be used, prepended by `-`. Otherwise, the segment index prepended by `-seg` will be used (e.g. `-Getting_Lunch`, `-seg1`).
-| | `${CUT_FROM}` | `string` | The timestamp for the beginning of the segment in `hh.mm.ss.sss` format (e.g. `00.00.27.184`).
-| | `${CUT_FROM_NUM}` | `number` | Same as `${CUT_FROM}`, but numeric, meaning it can be used with arithmetics.
-| | `${CUT_TO}` | `string` | The timestamp for the ending of the segment in `hh.mm.ss.sss` format (e.g. `00.00.28.000`).
-| | `${CUT_TO_NUM}` | `number` | See `${CUT_FROM_NUM}`.
-| | `${CUT_DURATION}` | `string` | The duration of the segment (`CUT_TO-CUT_FROM`) in `hh.mm.ss.sss` format (e.g. `00.00.28.000`).
-| | `${SEG_TAGS.XX}` | `object` | Allows you to retrieve the tags for a given segment by name. If a tag is called foo, it can be accessed with `${SEG_TAGS.foo}`. Note that if the tag does not exist, it will yield the text `undefined`. You can work around this as follows: `${SEG_TAGS.foo ?? ''}`
+| Avail. for merge files? | Avail. for cut+merge? | Variable | Type | Output |
+| - | - | - | - | - |
+| ✅ | ✅ | `${FILENAME}` | `string` | The original filename *without the extension* (e.g. `Beach Trip` for a file named `Beach Trip.mp4`). When merging files it's the *first* original file name.
+| ✅ | ✅ | `${EXT}` | `string` | The extension of the file (e.g.: `.mp4`, `.mkv`).
+| ✅ | ✅ | `${EPOCH_MS}` | `number` | Number of milliseconds since epoch (e.g. `1680852771465`). Useful to generate a unique file name on every export to prevent accidental overwrite.
+| ✅ | ✅ | `${EXPORT_COUNT}` | `number` | Number of exports done since last LosslessCut launch (starts at 1).
+| | ✅ | `${FILE_EXPORT_COUNT}` | `number` | Number of exports done since last file was opened (starts at 1).
+| ✅ | ✅ | `${SEG_LABEL}` | `string` / `string[]` | The label of the segment (e.g. `Getting Lunch`). In cut+merge mode, this will be an `Array`, and you can use e.g. this code to combine all labels with a comma between: `${SEG_LABEL.filter(label => label).join(',')}`. When merging files it's each original merged file's name.
+| | | `${SEG_NUM}` | `string` | Segment index, padded string (e.g. `01`, `02` or `42`).
+| | | `${SEG_NUM_INT}` | `number` | Segment index, as an integer (e.g. `1`, `2` or `42`). Can be used with numeric arithmetics, e.g. `${SEG_NUM_INT+100}`.
+| | | `${SELECTED_SEG_NUM}` | `string` | Same as `SEG_NUM`, but it counts only selected segments.
+| | | `${SELECTED_SEG_NUM_INT}` | `number` | Same as `SEG_NUM_INT`, but it counts only selected segments.
+| | | `${SEG_SUFFIX}` | `string` | If a label exists for this segment, the label will be used, prepended by `-`. Otherwise, the segment index prepended by `-seg` will be used (e.g. `-Getting_Lunch`, `-seg1`).
+| | | `${CUT_FROM}` | `string` | The timestamp for the beginning of the segment in `hh.mm.ss.sss` format (e.g. `00.00.27.184`).
+| | | `${CUT_FROM_NUM}` | `number` | Same as `${CUT_FROM}`, but numeric, meaning it can be used with arithmetics.
+| | | `${CUT_TO}` | `string` | The timestamp for the ending of the segment in `hh.mm.ss.sss` format (e.g. `00.00.28.000`).
+| | | `${CUT_TO_NUM}` | `number` | See `${CUT_FROM_NUM}`.
+| | | `${CUT_DURATION}` | `string` | The duration of the segment (`CUT_TO-CUT_FROM`) in `hh.mm.ss.sss` format (e.g. `00.00.28.000`).
+| | | `${SEG_TAGS.XX}` | `object` | Allows you to retrieve the tags for a given segment by name. If a tag is called foo, it can be accessed with `${SEG_TAGS.foo}`. Note that if the tag does not exist, it will yield the text `undefined`. You can work around this as follows: `${SEG_TAGS.foo ?? ''}`
 
 Your files must always include at least one unique identifer (such as `${SEG_NUM}` or `${CUT_FROM}`), and it should end in `${EXT}` (or else players might not recognise the files). For instance, to achieve a filename sequence of `Beach Trip - 1.mp4`, `Beach Trip - 2.mp4`, `Beach Trip - 3.mp4`, your format should read `${FILENAME} - ${SEG_NUM}${EXT}`. If your template gives at least two duplicate output file names, LosslessCut will revert to using the default template instead.
 

src/main/configStore.ts

@@ -127,6 +127,7 @@ const defaults: Config = {
   simpleMode: true,
   outSegTemplate: undefined,
   mergedFileTemplate: undefined,
+  mergedFilesTemplate: undefined,
   keyboardSeekAccFactor: 1.03,
   keyboardNormalSeekSpeed: 1,
   keyboardSeekSpeed2: 10,