Release Trim silence from only the beginning and only the end of selected items just like in Mixcraft v1.1

Items Editing/crossfreedom79_Trim silence from only the beginning and only the end of selected items just like in Mixcraft.lua

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+-- @description Trim silence from only the beginning and only the end of selected items just like in Mixcraft
+-- @author crossfreedom79
+-- @version 1.1
+-- @provides crossfreedom79_Trim silence from only the beginning and only the end of selected items just like in Mixcraft/Trim silence from only the beginning and only the end of selected items just like in Mixcraft.lua
+-- @about
+--   # Trim silence from only the beginning and only the end of selected items just like in Mixcraft
+--
+--   Trims the silence from only the beginning and only the end of a selected item or a selected audio take, just like the ctrl+i shortcut key in Mixcraft. you might need to change the number in the "local threshold_db" section to let the script know what is and isn't considered silence, for example, when i am not talking into the microphone but the microphone is armed, the green/red volume meter thingys next to the tracks volume knob says that their is -24 decibles of background sound in my room, so i input the number "-20" after the "=" sign, so now it reads like this "local threshold_db = -20". This lets the script know that any sound that it detects that is below the number "-20", should be considered silence that it will then trim.
+--
+--   Key features:
+--
+--   -Trims silence from only the beginning and only the end of selected items
+
+-- @description Trims the silence from only the beginning and only the end of a selected item or a selected audio take, just like the ctrl+i shortcut key in Mixcraft. you might need to change the number in the "local threshold_db" section to let the script know what is and isn't considered silence, for example, when i am not talking into the microphone but the microphone is armed, the green/red volume meter thingys next to the tracks volume knob says that their is -24 decibles of background sound in my room, so i input the number "-20" after the "=" sign, so now it reads like this "local threshold_db = -20". This lets the script know that any sound that it detects that is below the number "-20", should be considered silence that it will then trim.
+-- @version 1.1
+
+-- ======================================================================
+-- USER CONFIGURATION
+-- ======================================================================
+local threshold_db = -20 -- Silence threshold in dB (e.g., -60 to -30)
+local padding_sec = 0.05 -- Padding to keep around the audio in seconds (50ms)
+-- ======================================================================
+
+local threshold = 10 ^ (threshold_db / 20)
+local block_size = 65536 -- Number of samples to process per block 
+
+function get_trim_points(item, take)
+    if not take or reaper.TakeIsMIDI(take) then return nil end
+
+    local source = reaper.GetMediaItemTake_Source(take)
+    local samplerate = reaper.GetMediaSourceSampleRate(source)
+    if samplerate == 0 then return nil end
+
+    local item_len = reaper.GetMediaItemInfo_Value(item, "D_LENGTH")
+    local take_offs = reaper.GetMediaItemTakeInfo_Value(take, "D_STARTOFFS")
+    local playrate = reaper.GetMediaItemTakeInfo_Value(take, "D_PLAYRATE")
+
+    -- Accessors read raw source time, so we must calculate where the item actually starts in the file
+    local source_start = take_offs
+    local source_len = item_len * playrate
+    local source_end = source_start + source_len
+
+    local accessor = reaper.CreateTakeAudioAccessor(take)
+    local num_channels = reaper.GetMediaSourceNumChannels(source)
+
+    -- Allocate a buffer large enough for a full block of samples
+    local buffer = reaper.new_array(block_size * num_channels)
+
+    -- 1. Scan forward to find the start
+    local start_offset_source = 0
+    local found_start = false
+
+    for i = source_start, source_end, block_size / samplerate do
+        local len_to_read = (source_end - i) * samplerate
+        local num_samples = math.min(block_size, math.ceil(len_to_read))
+        if num_samples <= 0 then break end
+
+        local ret = reaper.GetAudioAccessorSamples(accessor, samplerate, num_channels, i, num_samples, buffer)
+
+        -- 'ret' safely prevents the nil comparison error
+        if ret and ret > 0 then
+            for j = 1, num_samples * num_channels do
+                if math.abs(buffer[j]) > threshold then
+                    local sample_idx = math.floor((j - 1) / num_channels)
+                    start_offset_source = i + (sample_idx / samplerate)
+                    found_start = true
+                    break
+                end
+            end
+        end
+        if found_start then break end
+    end
+
+    if not found_start then
+        reaper.DestroyAudioAccessor(accessor)
+        return nil, nil -- The item is completely silent
+    end
+
+    -- 2. Scan backward to find the end
+    local end_offset_source = source_end
+    local found_end = false
+    local current_pos = source_end
+
+    while current_pos > start_offset_source do
+        local read_pos = math.max(start_offset_source, current_pos - (block_size / samplerate))
+        local len_to_read = (current_pos - read_pos) * samplerate
+        local num_samples = math.min(block_size, math.ceil(len_to_read))
+        if num_samples <= 0 then break end
+
+        local ret = reaper.GetAudioAccessorSamples(accessor, samplerate, num_channels, read_pos, num_samples, buffer)
+
+        if ret and ret > 0 then
+            for j = num_samples * num_channels, 1, -1 do
+                if math.abs(buffer[j]) > threshold then
+                    local sample_idx = math.floor((j - 1) / num_channels)
+                    end_offset_source = read_pos + (sample_idx / samplerate)
+                    found_end = true
+                    break
+                end
+            end
+        end
+        if found_end then break end
+        current_pos = read_pos
+    end
+
+    reaper.DestroyAudioAccessor(accessor)
+
+    -- Convert the found source times back to relative item times
+    local start_offset_item = (start_offset_source - source_start) / playrate
+    local end_offset_item = (end_offset_source - source_start) / playrate
+
+    -- Apply user-defined padding safely
+    start_offset_item = math.max(0, start_offset_item - padding_sec)
+    end_offset_item = math.min(item_len, end_offset_item + padding_sec)
+
+    return start_offset_item, end_offset_item
+end
+
+function main()
+    local count = reaper.CountSelectedMediaItems(0)
+    if count == 0 then return end
+
+    reaper.Undo_BeginBlock()
+
+    -- Iterate backwards to safely modify items without disrupting indexing
+    for i = count - 1, 0, -1 do
+        local item = reaper.GetSelectedMediaItem(0, i)
+        local take = reaper.GetActiveTake(item)
+
+        if take and not reaper.TakeIsMIDI(take) then
+            local start_offset, end_offset = get_trim_points(item, take)
+
+            if start_offset and end_offset and start_offset < end_offset then
+                local item_pos = reaper.GetMediaItemInfo_Value(item, "D_POSITION")
+                local item_len = reaper.GetMediaItemInfo_Value(item, "D_LENGTH")
+                local take_offs = reaper.GetMediaItemTakeInfo_Value(take, "D_STARTOFFS")
+                local playrate = reaper.GetMediaItemTakeInfo_Value(take, "D_PLAYRATE")
+
+                -- Only apply changes if silence was actually found at the edges
+                if start_offset > 0 or end_offset < item_len then
+                    local new_pos = item_pos + start_offset
+                    local new_len = end_offset - start_offset
+
+                    -- Adjusting take offset requires factoring in the playrate 
+                    local new_offs = take_offs + (start_offset * playrate)
+
+                    reaper.SetMediaItemInfo_Value(item, "D_POSITION", new_pos)
+                    reaper.SetMediaItemInfo_Value(item, "D_LENGTH", new_len)
+                    reaper.SetMediaItemTakeInfo_Value(take, "D_STARTOFFS", new_offs)
+                end
+            end
+        end
+    end
+
+    reaper.UpdateArrange()
+    reaper.Undo_EndBlock("Trim edge silence from selected items", -1)
+end
+
+main()

Items Editing/crossfreedom79_Trim silence from only the beginning and only the end of selected items just like in Mixcraft/Trim silence from only the beginning and only the end of selected items just like in Mixcraft.lua

@@ -0,0 +1,148 @@
+-- @noindex
+
+-- @description Trims the silence from only the beginning and only the end of a selected item or a selected audio take, just like the ctrl+i shortcut key in Mixcraft. you might need to change the number in the "local threshold_db" section to let the script know what is and isn't considered silence, for example, when i am not talking into the microphone but the microphone is armed, the green/red volume meter thingys next to the tracks volume knob says that their is -24 decibles of background sound in my room, so i input the number "-20" after the "=" sign, so now it reads like this "local threshold_db = -20". This lets the script know that any sound that it detects that is below the number "-20", should be considered silence that it will then trim.
+-- @version 1.1
+
+-- ======================================================================
+-- USER CONFIGURATION
+-- ======================================================================
+local threshold_db = -20 -- Silence threshold in dB (e.g., -60 to -30)
+local padding_sec = 0.05 -- Padding to keep around the audio in seconds (50ms)
+-- ======================================================================
+
+local threshold = 10 ^ (threshold_db / 20)
+local block_size = 65536 -- Number of samples to process per block 
+
+function get_trim_points(item, take)
+    if not take or reaper.TakeIsMIDI(take) then return nil end
+
+    local source = reaper.GetMediaItemTake_Source(take)
+    local samplerate = reaper.GetMediaSourceSampleRate(source)
+    if samplerate == 0 then return nil end
+
+    local item_len = reaper.GetMediaItemInfo_Value(item, "D_LENGTH")
+    local take_offs = reaper.GetMediaItemTakeInfo_Value(take, "D_STARTOFFS")
+    local playrate = reaper.GetMediaItemTakeInfo_Value(take, "D_PLAYRATE")
+
+    -- Accessors read raw source time, so we must calculate where the item actually starts in the file
+    local source_start = take_offs
+    local source_len = item_len * playrate
+    local source_end = source_start + source_len
+
+    local accessor = reaper.CreateTakeAudioAccessor(take)
+    local num_channels = reaper.GetMediaSourceNumChannels(source)
+
+    -- Allocate a buffer large enough for a full block of samples
+    local buffer = reaper.new_array(block_size * num_channels)
+
+    -- 1. Scan forward to find the start
+    local start_offset_source = 0
+    local found_start = false
+
+    for i = source_start, source_end, block_size / samplerate do
+        local len_to_read = (source_end - i) * samplerate
+        local num_samples = math.min(block_size, math.ceil(len_to_read))
+        if num_samples <= 0 then break end
+
+        local ret = reaper.GetAudioAccessorSamples(accessor, samplerate, num_channels, i, num_samples, buffer)
+
+        -- 'ret' safely prevents the nil comparison error
+        if ret and ret > 0 then
+            for j = 1, num_samples * num_channels do
+                if math.abs(buffer[j]) > threshold then
+                    local sample_idx = math.floor((j - 1) / num_channels)
+                    start_offset_source = i + (sample_idx / samplerate)
+                    found_start = true
+                    break
+                end
+            end
+        end
+        if found_start then break end
+    end
+
+    if not found_start then
+        reaper.DestroyAudioAccessor(accessor)
+        return nil, nil -- The item is completely silent
+    end
+
+    -- 2. Scan backward to find the end
+    local end_offset_source = source_end
+    local found_end = false
+    local current_pos = source_end
+
+    while current_pos > start_offset_source do
+        local read_pos = math.max(start_offset_source, current_pos - (block_size / samplerate))
+        local len_to_read = (current_pos - read_pos) * samplerate
+        local num_samples = math.min(block_size, math.ceil(len_to_read))
+        if num_samples <= 0 then break end
+
+        local ret = reaper.GetAudioAccessorSamples(accessor, samplerate, num_channels, read_pos, num_samples, buffer)
+
+        if ret and ret > 0 then
+            for j = num_samples * num_channels, 1, -1 do
+                if math.abs(buffer[j]) > threshold then
+                    local sample_idx = math.floor((j - 1) / num_channels)
+                    end_offset_source = read_pos + (sample_idx / samplerate)
+                    found_end = true
+                    break
+                end
+            end
+        end
+        if found_end then break end
+        current_pos = read_pos
+    end
+
+    reaper.DestroyAudioAccessor(accessor)
+
+    -- Convert the found source times back to relative item times
+    local start_offset_item = (start_offset_source - source_start) / playrate
+    local end_offset_item = (end_offset_source - source_start) / playrate
+
+    -- Apply user-defined padding safely
+    start_offset_item = math.max(0, start_offset_item - padding_sec)
+    end_offset_item = math.min(item_len, end_offset_item + padding_sec)
+
+    return start_offset_item, end_offset_item
+end
+
+function main()
+    local count = reaper.CountSelectedMediaItems(0)
+    if count == 0 then return end
+
+    reaper.Undo_BeginBlock()
+
+    -- Iterate backwards to safely modify items without disrupting indexing
+    for i = count - 1, 0, -1 do
+        local item = reaper.GetSelectedMediaItem(0, i)
+        local take = reaper.GetActiveTake(item)
+
+        if take and not reaper.TakeIsMIDI(take) then
+            local start_offset, end_offset = get_trim_points(item, take)
+
+            if start_offset and end_offset and start_offset < end_offset then
+                local item_pos = reaper.GetMediaItemInfo_Value(item, "D_POSITION")
+                local item_len = reaper.GetMediaItemInfo_Value(item, "D_LENGTH")
+                local take_offs = reaper.GetMediaItemTakeInfo_Value(take, "D_STARTOFFS")
+                local playrate = reaper.GetMediaItemTakeInfo_Value(take, "D_PLAYRATE")
+
+                -- Only apply changes if silence was actually found at the edges
+                if start_offset > 0 or end_offset < item_len then
+                    local new_pos = item_pos + start_offset
+                    local new_len = end_offset - start_offset
+
+                    -- Adjusting take offset requires factoring in the playrate 
+                    local new_offs = take_offs + (start_offset * playrate)
+
+                    reaper.SetMediaItemInfo_Value(item, "D_POSITION", new_pos)
+                    reaper.SetMediaItemInfo_Value(item, "D_LENGTH", new_len)
+                    reaper.SetMediaItemTakeInfo_Value(take, "D_STARTOFFS", new_offs)
+                end
+            end
+        end
+    end
+
+    reaper.UpdateArrange()
+    reaper.Undo_EndBlock("Trim edge silence from selected items", -1)
+end
+
+main()